Analysis

  • max time kernel
    134s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-10-2024 15:59

General

  • Target

    cmclient.exe

  • Size

    227KB

  • MD5

    2ff5eea0426612b967301396523c9835

  • SHA1

    af092e6d35d0c0c09d07102fb7e4416459b3d056

  • SHA256

    d36f3b379bcafb2f206a5dc18297c0c0fa0fa6afb44f7640da54cd809051b24c

  • SHA512

    d442d98abd61aa7f551e3309028e303c4390ab54bb94149d8bf0022b7faab1d70e40c66875f8d997e2203964dc8213084d50b108e088af5b433dce2c225f7a3c

  • SSDEEP

    6144:+loZM+rIkd8g+EtXHkv/iD46NdMiAfbokxUyzzqZYw8e1m9Qi:ooZtL+EP86NdMiAfbokxUyzzqfWJ

Score
10/10

Malware Config

Signatures

  • Detect Umbral payload 1 IoCs
  • Umbral

    Umbral stealer is an opensource moduler stealer written in C#.

  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 43 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cmclient.exe
    "C:\Users\Admin\AppData\Local\Temp\cmclient.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1384
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2912

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • memory/1384-0-0x00007FFDC0AB3000-0x00007FFDC0AB5000-memory.dmp

    Filesize

    8KB

  • memory/1384-1-0x00000229902A0000-0x00000229902E0000-memory.dmp

    Filesize

    256KB

  • memory/1384-2-0x00007FFDC0AB0000-0x00007FFDC1571000-memory.dmp

    Filesize

    10.8MB

  • memory/1384-4-0x00007FFDC0AB0000-0x00007FFDC1571000-memory.dmp

    Filesize

    10.8MB