Analysis

  • max time kernel
    131s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-07-2024 08:53

General

  • Target

    akrien_315727800.exe

  • Size

    3.5MB

  • MD5

    887d3ac7ee69d7c63082f8871ab10959

  • SHA1

    0235f732d4f08dae6354f648d1413acbdcda6b32

  • SHA256

    4901acc3d2f993fb841c4e15e80dcc04f3ac1543f0758bc042fa57559a75e834

  • SHA512

    881ec672a1991e659c327737667f83b9b127903b1bec19b47f83212fa364f68db49cc3ede06163f906951c96aa7869b786abece410abe669420b463a4c93ef24

  • SSDEEP

    98304:LMSHC08rdkn//eESI+Y/nTkSgCwnz/yp/r:LzHC08qxSpQTk0Azy/r

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discordapp.com/api/webhooks/903016099652714568/4LAokuhDJs5h0vO5CXmMK0YYuFKTGnU4CjbaT5KQ7MbcniuaxcFR9w9xhFWgtXEZyg2U

Signatures

  • Mercurial Grabber Stealer

    Mercurial Grabber is an open source stealer targeting Chrome, Discord and some game clients as well as generic system information.

  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 1 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 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 3 IoCs

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

  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 1 IoCs

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

  • Enumerates system info in registry 2 TTPs 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\akrien_315727800.exe
    "C:\Users\Admin\AppData\Local\Temp\akrien_315727800.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2332
    • C:\Users\Admin\AppData\Local\Temp\output.exe
      "C:\Users\Admin\AppData\Local\Temp\output.exe"
      2⤵
      • Looks for VirtualBox Guest Additions in registry
      • Looks for VMWare Tools registry key
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Maps connected drives based on registry
      • Checks SCSI registry key(s)
      • Enumerates system info in registry
      • Suspicious use of AdjustPrivilegeToken
      PID:3464
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=3960,i,6166776566165096562,4582328833313060853,262144 --variations-seed-version --mojo-platform-channel-handle=3468 /prefetch:8
    1⤵
      PID:3284

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\output.exe

      Filesize

      41KB

      MD5

      1ba306575eb0cf0534e55a4d49c255e0

      SHA1

      910df96854593214f96cb3d75b508d92adbdd3ff

      SHA256

      f038e846e5ef7148597b250fa64c29811a2d7ae33572ce203cca83e13b42b54f

      SHA512

      8aabd20f3986dc65f3c1d09ba94083cc5e2adc45867c3d50551cdb6291b26f5e0bbcbacb3483ebec4c5e0e410abb48097e4bbedd08beea571a5f0d9102453515

    • memory/2332-10-0x0000000000400000-0x000000000077B000-memory.dmp

      Filesize

      3.5MB

    • memory/3464-12-0x00007FFF91693000-0x00007FFF91695000-memory.dmp

      Filesize

      8KB

    • memory/3464-13-0x0000000000740000-0x0000000000750000-memory.dmp

      Filesize

      64KB

    • memory/3464-14-0x00007FFF91690000-0x00007FFF92151000-memory.dmp

      Filesize

      10.8MB

    • memory/3464-18-0x00007FFF91690000-0x00007FFF92151000-memory.dmp

      Filesize

      10.8MB