Analysis

  • max time kernel
    162s
  • max time network
    161s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    19-01-2022 08:10

General

  • Target

    7zS850A099E/61e74fd53f766_Tue23ec97445e.exe

  • Size

    160KB

  • MD5

    8f70a0f45532261cb4df2800b141551d

  • SHA1

    521bbc045dfb7bf9fca55058ed2fc03d86cf8d00

  • SHA256

    aa2c0a9e34f9fa4cbf1780d757cc84f32a8bd005142012e91a6888167f80f4d5

  • SHA512

    3ea19ee472f3c7f9b7452fb4769fc3cc7591acff0f155889d08dadbd1f6ae289eaa310e220279318ac1536f99ea88e43ff75836aee47f3b4fbe8aa477cb9d099

Malware Config

Signatures

  • Modifies Windows Defender Real-time Protection settings 3 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7zS850A099E\61e74fd53f766_Tue23ec97445e.exe
    "C:\Users\Admin\AppData\Local\Temp\7zS850A099E\61e74fd53f766_Tue23ec97445e.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1688
    • C:\Users\Admin\Pictures\Adobe Films\pQ1dYR6DeSA6o_PH6sod_VLO.exe
      "C:\Users\Admin\Pictures\Adobe Films\pQ1dYR6DeSA6o_PH6sod_VLO.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      PID:1320
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1688 -s 1424
      2⤵
      • Program crash
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:1716

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

Defense Evasion

Modify Registry

1
T1112

Disabling Security Tools

1
T1089

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Replay Monitor

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Downloads

  • C:\Users\Admin\Pictures\Adobe Films\pQ1dYR6DeSA6o_PH6sod_VLO.exe
    MD5

    3f22bd82ee1b38f439e6354c60126d6d

    SHA1

    63b57d818f86ea64ebc8566faeb0c977839defde

    SHA256

    265c2ddc8a21e6fa8dfaa38ef0e77df8a2e98273a1abfb575aef93c0cc8ee96a

    SHA512

    b73e8e17e5e99d0e9edfb690ece8b0c15befb4d48b1c4f2fe77c5e3daf01df35858c06e1403a8636f86363708b80123d12122cb821a86b575b184227c760988f

  • \Users\Admin\Pictures\Adobe Films\pQ1dYR6DeSA6o_PH6sod_VLO.exe
    MD5

    3f22bd82ee1b38f439e6354c60126d6d

    SHA1

    63b57d818f86ea64ebc8566faeb0c977839defde

    SHA256

    265c2ddc8a21e6fa8dfaa38ef0e77df8a2e98273a1abfb575aef93c0cc8ee96a

    SHA512

    b73e8e17e5e99d0e9edfb690ece8b0c15befb4d48b1c4f2fe77c5e3daf01df35858c06e1403a8636f86363708b80123d12122cb821a86b575b184227c760988f

  • memory/1688-54-0x0000000076151000-0x0000000076153000-memory.dmp
    Filesize

    8KB

  • memory/1716-60-0x0000000000730000-0x0000000000731000-memory.dmp
    Filesize

    4KB