Resubmissions

27-10-2021 14:44

211027-r4madafbg6 10

27-10-2021 14:28

211027-rs7f6sfah4 10

Analysis

  • max time kernel
    237s
  • max time network
    1566s
  • submitted
    01-01-1970 00:00

General

  • Target

    setup_installer/Wed09c42cad92c20f79.exe

Score
6/10

Malware Config

Signatures

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 4 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.

  • Kills process with taskkill 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\setup_installer\Wed09c42cad92c20f79.exe
    "C:\Users\Admin\AppData\Local\Temp\setup_installer\Wed09c42cad92c20f79.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1900
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "Wed09c42cad92c20f79.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\setup_installer\Wed09c42cad92c20f79.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:676
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im "Wed09c42cad92c20f79.exe" /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:716

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

System Information Discovery

1
T1082

Command and Control

Web Service

1
T1102

Replay Monitor

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Downloads

  • memory/676-118-0x0000000000000000-mapping.dmp
  • memory/716-119-0x0000000000000000-mapping.dmp
  • memory/1900-116-0x0000000002DC0000-0x0000000002E0A000-memory.dmp
    Filesize

    296KB

  • memory/1900-117-0x0000000000400000-0x0000000002BC3000-memory.dmp
    Filesize

    39.8MB