Resubmissions

03-07-2024 14:55

240703-sah7astgqh 10

03-07-2024 14:54

240703-r94rlstgpb 10

Analysis

  • max time kernel
    7s
  • max time network
    6s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-07-2024 14:54

General

  • Target

    Umbral.exe

  • Size

    229KB

  • MD5

    1c34c800baf35d1e3434531040d07139

  • SHA1

    c483bf994bc40f2f66dd3767df3c327c205301ee

  • SHA256

    7faa7dc741f6cbee158e99306c59f254e878236501f8cca5d6c29ed2c2029f2a

  • SHA512

    6f30a725e7eb759af2fdadfa10edf8daecd3c4c129571308db55cc19f969bac3f4ddd350d1831ca8f9eb1b7471617de9750b3aba92559299f1c688be2fccad07

  • SSDEEP

    6144:lloZM+rIkd8g+EtXHkv/iD4ZfcHzZqStTY5rWWDPzb8e1mMti:noZtL+EP8ZfcHzZqStTY5rWWDvdk

Score
10/10

Malware Config

Signatures

  • Detect Umbral payload 1 IoCs
  • Umbral

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

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 20 IoCs
  • Suspicious use of SendNotifyMessage 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Umbral.exe
    "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1276
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:2584

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1276-0-0x000002020AF40000-0x000002020AF80000-memory.dmp

    Filesize

    256KB

  • memory/1276-1-0x00007FFDCF893000-0x00007FFDCF895000-memory.dmp

    Filesize

    8KB

  • memory/1276-2-0x00007FFDCF890000-0x00007FFDD0351000-memory.dmp

    Filesize

    10.8MB

  • memory/2584-3-0x000001B1BF260000-0x000001B1BF261000-memory.dmp

    Filesize

    4KB

  • memory/2584-5-0x000001B1BF260000-0x000001B1BF261000-memory.dmp

    Filesize

    4KB

  • memory/2584-4-0x000001B1BF260000-0x000001B1BF261000-memory.dmp

    Filesize

    4KB

  • memory/2584-15-0x000001B1BF260000-0x000001B1BF261000-memory.dmp

    Filesize

    4KB

  • memory/2584-14-0x000001B1BF260000-0x000001B1BF261000-memory.dmp

    Filesize

    4KB

  • memory/2584-13-0x000001B1BF260000-0x000001B1BF261000-memory.dmp

    Filesize

    4KB

  • memory/2584-12-0x000001B1BF260000-0x000001B1BF261000-memory.dmp

    Filesize

    4KB

  • memory/2584-11-0x000001B1BF260000-0x000001B1BF261000-memory.dmp

    Filesize

    4KB

  • memory/2584-10-0x000001B1BF260000-0x000001B1BF261000-memory.dmp

    Filesize

    4KB

  • memory/2584-9-0x000001B1BF260000-0x000001B1BF261000-memory.dmp

    Filesize

    4KB