Analysis

  • max time kernel
    119s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-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.

  • Executes dropped EXE 1 IoCs
  • 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 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
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\akrien_315727800.exe
    "C:\Users\Admin\AppData\Local\Temp\akrien_315727800.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:3020
    • 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
      • Modifies system certificate store
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2068
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2068 -s 1664
        3⤵
          PID:2636

    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/2068-7-0x000007FEF5F93000-0x000007FEF5F94000-memory.dmp

      Filesize

      4KB

    • memory/2068-8-0x0000000000B60000-0x0000000000B70000-memory.dmp

      Filesize

      64KB

    • memory/2068-9-0x000007FEF5F90000-0x000007FEF697C000-memory.dmp

      Filesize

      9.9MB

    • memory/2068-13-0x000007FEF5F93000-0x000007FEF5F94000-memory.dmp

      Filesize

      4KB

    • memory/2068-14-0x000007FEF5F90000-0x000007FEF697C000-memory.dmp

      Filesize

      9.9MB

    • memory/3020-4-0x0000000000400000-0x000000000077B000-memory.dmp

      Filesize

      3.5MB