TROJ_DROMA.NIL

December 07, 2013
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It deletes itself after execution.

  TECHNICAL DETAILS

File Size:

66,048 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

07 Dec 2013

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Other System Modifications

This Trojan deletes the following files:

  • {malware path and file name}.dll
  • {malware path and file name}.dll_
  • %Application Data%\2433f433
  • %User Profile%\Application Data\2433f433
  • %User Profile%\Templates\2433f433

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://{BLOCKED}edlocallysourced.net/paUUnZdhcE-KVPguE-l0Yx0oyEH6dhs=
  • http://{BLOCKED}edlocallysourced.net/KuE4eLOM6ia1Q_iucRRU4Oxf_W_hl4k=
  • http://{BLOCKED}edlocallysourced.net/tq618TZrBeZYARgu2TKVX_5828puAwc=
  • http://{BLOCKED}edlocallysourced.net/XD1hWdl-z50VMNGUJs6fo5PPwSCllSU=
  • http://{BLOCKED}edlocallysourced.net/dJHZxWcRgs-GnsL8PRYx5SymQSieXIA=
  • http://{BLOCKED}edlocallysourced.net/BKF-jutQ8fHnyDCuTToiCASLz1ihRWc=
  • http://{BLOCKED}edlocallysourced.net/tz5rGgsm2DwnHWrzHmaNMirNlb1Dw10=
  • http://{BLOCKED}edlocallysourced.net/LZ8PTQdhhwrUuJehZB-S76O7zyBXAiw=
  • http://{BLOCKED}edlocallysourced.net/uHJlybrwiZWYtFQw0Rmm5Tt_7FIR2vw=
  • http://{BLOCKED}edlocallysourced.net/vWNLh9cLn6dcbAy-6Axt3jkFXV_kiUE=
  • http://{BLOCKED}edlocallysourced.net/uL0ovJdhcE-KVPguE-l0Yx0oyEH6dht4Go63
  • http://{BLOCKED}edlocallysourced.net/N_kEWbOM6ia1Q_iucRRU4Oxf_W_hl4k9iDwG
  • http://{BLOCKED}edlocallysourced.net/q7aJ0DZrBeZYARgu2TKVX_5828puAwcurI13
  • http://{BLOCKED}edlocallysourced.net/QSVdeNl-z50VMNGUJs6fo5PPwSCllSWGaXBi
  • http://{BLOCKED}edlocallysourced.net/aYnl5GcRgs-GnsL8PRYx5SymQSieXICBadg6
  • http://{BLOCKED}edlocallysourced.net/GblCr-tQ8fHnyDCuTToiCASLz1ihRWdaImPa
  • http://{BLOCKED}edlocallysourced.net/qiZXOwsm2DwnHWrzHmaNMirNlb1Dw12YvIA9
  • http://{BLOCKED}edlocallysourced.net/MIczbAdhhwrUuJehZB-S76O7zyBXAiyjVX2b
  • http://{BLOCKED}edlocallysourced.net/pWpZ6LrwiZWYtFQw0Rmm5Tt_7FIR2vywK64p
  • http://{BLOCKED}edlocallysourced.net/oHt3ptcLn6dcbAy-6Axt3jkFXV_kiUEL9jLo
  • http://{BLOCKED}edlocallysourced.net/SqUAoJdhcE-KVPguE-l0Yx0oyEH6
  • http://{BLOCKED}edlocallysourced.net/xeEsRbOM6ia1Q_iucRRU4Oxf_W_h
  • http://{BLOCKED}edlocallysourced.net/Wa6hzDZrBeZYARgu2TKVX_5828pu
  • http://{BLOCKED}edlocallysourced.net/sz11ZNl-z50VMNGUJs6fo5PPwSCl
  • http://{BLOCKED}edlocallysourced.net/m5HN-GcRgs-GnsL8PRYx5SymQSie
  • http://{BLOCKED}edlocallysourced.net/66Fqs-tQ8fHnyDCuTToiCASLz1ih
  • http://{BLOCKED}edlocallysourced.net/WD5_Jwsm2DwnHWrzHmaNMirNlb1D
  • http://{BLOCKED}edlocallysourced.net/wp8bcAdhhwrUuJehZB-S76O7zyBX
  • http://{BLOCKED}edlocallysourced.net/V3Jx9LrwiZWYtFQw0Rmm5Tt_7FIR
  • http://{BLOCKED}edlocallysourced.net/UmNfutcLn6dcbAy-6Axt3jkFXV_k
  • http://{BLOCKED}edlocallysourced.net/D9tsrZdhcE-KVPguE-l0Yx0oyEH6dht4Go63FyW6wC5LFA==
  • http://{BLOCKED}edlocallysourced.net/gJ9ASLOM6ia1Q_iucRRU4Oxf_W_hl4k9iDwGaBoMg7y2mQ==
  • http://{BLOCKED}edlocallysourced.net/HNDNwTZrBeZYARgu2TKVX_5828puAwcurI13buQ0FaCh1Q==
  • http://{BLOCKED}edlocallysourced.net/9kMZadl-z50VMNGUJs6fo5PPwSCllSWGaXBifT_Ch_PgbA==
  • http://{BLOCKED}edlocallysourced.net/3u-h9WcRgs-GnsL8PRYx5SymQSieXICBadg6KOxSZBo1hA==
  • http://{BLOCKED}edlocallysourced.net/rt8GvutQ8fHnyDCuTToiCASLz1ihRWdaImPaOf_mW5uv_Q==
  • http://{BLOCKED}edlocallysourced.net/HUATKgsm2DwnHWrzHmaNMirNlb1Dw12YvIA9LZNLLGN8sg==
  • http://{BLOCKED}edlocallysourced.net/h-F3fQdhhwrUuJehZB-S76O7zyBXAiyjVX2bsWZC7UC8Cw==
  • http://{BLOCKED}edlocallysourced.net/Egwd-brwiZWYtFQw0Rmm5Tt_7FIR2vywK64pArrRB9XHhg==
  • http://{BLOCKED}edlocallysourced.net/Fx0zt9cLn6dcbAy-6Axt3jkFXV_kiUEL9jLoEH_ig3pepg==
  • http://{BLOCKED}edlocallysourced.net/_lVPOZdhcE-KVPguE-l0Yx0oyA==
  • http://{BLOCKED}edlocallysourced.net/cRFj3LOM6ia1Q_iucRRU4Oxf_Q==
  • http://{BLOCKED}edlocallysourced.net/7V7uVTZrBeZYARgu2TKVX_582w==
  • http://{BLOCKED}edlocallysourced.net/B806_dl-z50VMNGUJs6fo5PPwQ==
  • http://{BLOCKED}edlocallysourced.net/L2GCYWcRgs-GnsL8PRYx5SymQQ==
  • http://{BLOCKED}edlocallysourced.net/X1ElKutQ8fHnyDCuTToiCASLzw==
  • http://{BLOCKED}edlocallysourced.net/7M4wvgsm2DwnHWrzHmaNMirNlQ==
  • http://{BLOCKED}edlocallysourced.net/dm9U6QdhhwrUuJehZB-S76O7zw==
  • http://{BLOCKED}edlocallysourced.net/44I-bbrwiZWYtFQw0Rmm5Tt_7A==
  • http://{BLOCKED}edlocallysourced.net/5pMQI9cLn6dcbAy-6Axt3jkFXQ==
  • http://{BLOCKED}edlocallysourced.net/pn9MxZdhcE-KVPguE-l0Yx0oyEE=
  • http://{BLOCKED}edlocallysourced.net/KTtgILOM6ia1Q_iucRRU4Oxf_W8=
  • http://{BLOCKED}edlocallysourced.net/tXTtqTZrBeZYARgu2TKVX_5828o=
  • http://{BLOCKED}edlocallysourced.net/X-c5Adl-z50VMNGUJs6fo5PPwSA=
  • http://{BLOCKED}edlocallysourced.net/d0uBnWcRgs-GnsL8PRYx5SymQSg=
  • http://{BLOCKED}edlocallysourced.net/B3sm1utQ8fHnyDCuTToiCASLz1g=
  • http://{BLOCKED}edlocallysourced.net/tOQzQgsm2DwnHWrzHmaNMirNlb0=
  • http://{BLOCKED}edlocallysourced.net/LkVXFQdhhwrUuJehZB-S76O7zyA=
  • http://{BLOCKED}edlocallysourced.net/u6g9kbrwiZWYtFQw0Rmm5Tt_7FI=
  • http://{BLOCKED}edlocallysourced.net/vrkT39cLn6dcbAy-6Axt3jkFXV8=
  • http://{BLOCKED}edlocallysourced.net/k6n0M5dhcE-KVPguE-l0Yx0oyEH6dht4Go63FyW6wA==
  • http://{BLOCKED}edlocallysourced.net/HO3Y1rOM6ia1Q_iucRRU4Oxf_W_hl4k9iDwGaBoMgw==
  • http://{BLOCKED}edlocallysourced.net/gKJVXzZrBeZYARgu2TKVX_5828puAwcurI13buQ0FQ==
  • http://{BLOCKED}edlocallysourced.net/ajGB99l-z50VMNGUJs6fo5PPwSCllSWGaXBifT_Chw==
  • http://{BLOCKED}edlocallysourced.net/Qp05a2cRgs-GnsL8PRYx5SymQSieXICBadg6KOxSZA==
  • http://{BLOCKED}edlocallysourced.net/Mq2eIOtQ8fHnyDCuTToiCASLz1ihRWdaImPaOf_mWw==
  • http://{BLOCKED}edlocallysourced.net/gTKLtAsm2DwnHWrzHmaNMirNlb1Dw12YvIA9LZNLLA==
  • http://{BLOCKED}edlocallysourced.net/G5Pv4wdhhwrUuJehZB-S76O7zyBXAiyjVX2bsWZC7Q==
  • http://{BLOCKED}edlocallysourced.net/jn6FZ7rwiZWYtFQw0Rmm5Tt_7FIR2vywK64pArrRBw==
  • http://{BLOCKED}edlocallysourced.net/i2-rKdcLn6dcbAy-6Axt3jkFXV_kiUEL9jLoEH_igw==
  • http://{BLOCKED}edlocallysourced.net/LARYxJdhcE-KVPguE-l0Yx0oyEH6dht4Go63FyW6wC5L
  • http://{BLOCKED}edlocallysourced.net/o0B0IbOM6ia1Q_iucRRU4Oxf_W_hl4k9iDwGaBoMg7y2
  • http://{BLOCKED}edlocallysourced.net/Pw_5qDZrBeZYARgu2TKVX_5828puAwcurI13buQ0FaCh
  • http://{BLOCKED}edlocallysourced.net/1ZwtANl-z50VMNGUJs6fo5PPwSCllSWGaXBifT_Ch_Pg
  • http://{BLOCKED}edlocallysourced.net/_TCVnGcRgs-GnsL8PRYx5SymQSieXICBadg6KOxSZBo1
  • http://{BLOCKED}edlocallysourced.net/jQAy1-tQ8fHnyDCuTToiCASLz1ihRWdaImPaOf_mW5uv
  • http://{BLOCKED}edlocallysourced.net/Pp8nQwsm2DwnHWrzHmaNMirNlb1Dw12YvIA9LZNLLGN8
  • http://{BLOCKED}edlocallysourced.net/pD5DFAdhhwrUuJehZB-S76O7zyBXAiyjVX2bsWZC7UC8
  • http://{BLOCKED}edlocallysourced.net/MdMpkLrwiZWYtFQw0Rmm5Tt_7FIR2vywK64pArrRB9XH
  • http://{BLOCKED}edlocallysourced.net/NMIH3tcLn6dcbAy-6Axt3jkFXV_kiUEL9jLoEH_ig3pe

It deletes itself after execution.

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.300

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Scan your computer with your Trend Micro product to delete files detected as TROJ_DROMA.NIL. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.

Step 3

Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.

  • {malware path and file name}.dll
  • {malware path and file name}.dll_
  • %Application Data%\2433f433
  • %User Profile%\Application Data\2433f433
  • %User Profile%\Templates\2433f433


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