Analysis

  • max time kernel
    152s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    31-10-2021 16:54

General

  • Target

    Setup.exe

  • Size

    403KB

  • MD5

    d1b2c8ddca2f8dd02e2c132153055084

  • SHA1

    21c011ac7406eef048c175f5887e4eb885c050d6

  • SHA256

    506c2f513d64242fcb20ccff8c26c0ed1755fe9120b984c29ba224b311d635c3

  • SHA512

    ab73df911df41235159341cc8fefed284a3f9720f241b51dfe2db2ac415b3438d5fbbeacfa980a61d402edc64afeda87447ccda49b7d279fba524036e9287594

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.

  • 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\Setup.exe
    "C:\Users\Admin\AppData\Local\Temp\Setup.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:552
    • C:\Users\Admin\Pictures\Adobe Films\6q68tR62TEv8RNqZHLg6Y2yD.exe
      "C:\Users\Admin\Pictures\Adobe Films\6q68tR62TEv8RNqZHLg6Y2yD.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      PID:1052
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 552 -s 1464
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:920

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

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\Pictures\Adobe Films\6q68tR62TEv8RNqZHLg6Y2yD.exe
    MD5

    3f22bd82ee1b38f439e6354c60126d6d

    SHA1

    63b57d818f86ea64ebc8566faeb0c977839defde

    SHA256

    265c2ddc8a21e6fa8dfaa38ef0e77df8a2e98273a1abfb575aef93c0cc8ee96a

    SHA512

    b73e8e17e5e99d0e9edfb690ece8b0c15befb4d48b1c4f2fe77c5e3daf01df35858c06e1403a8636f86363708b80123d12122cb821a86b575b184227c760988f

  • \Users\Admin\Pictures\Adobe Films\6q68tR62TEv8RNqZHLg6Y2yD.exe
    MD5

    3f22bd82ee1b38f439e6354c60126d6d

    SHA1

    63b57d818f86ea64ebc8566faeb0c977839defde

    SHA256

    265c2ddc8a21e6fa8dfaa38ef0e77df8a2e98273a1abfb575aef93c0cc8ee96a

    SHA512

    b73e8e17e5e99d0e9edfb690ece8b0c15befb4d48b1c4f2fe77c5e3daf01df35858c06e1403a8636f86363708b80123d12122cb821a86b575b184227c760988f

  • memory/552-55-0x0000000076431000-0x0000000076433000-memory.dmp
    Filesize

    8KB

  • memory/552-56-0x0000000003E90000-0x0000000003FDA000-memory.dmp
    Filesize

    1.3MB

  • memory/920-60-0x0000000000000000-mapping.dmp
  • memory/920-61-0x00000000004C0000-0x0000000000528000-memory.dmp
    Filesize

    416KB

  • memory/1052-58-0x0000000000000000-mapping.dmp