Analysis

  • max time kernel
    32s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    05-01-2025 16:51

General

  • Target

    JaffaCakes118_b1faa78d4779adbd4c7e4a9a428a1247.exe

  • Size

    42KB

  • MD5

    b1faa78d4779adbd4c7e4a9a428a1247

  • SHA1

    9433c5982146e434604ae350cc9ecd7b4829d9a6

  • SHA256

    09f0de084878957eed32dd67002c17a4d2a888e82bdb02de039605fee83e8f8f

  • SHA512

    ea5dfea9689f08c90e4de03caf206acc80d379877e92f5e0bbbd84ad5d2af91002b9b1d8d011293167898be7f90af1ed3e9102dcfe2a27ddfe3fdc5f0d06d872

  • SSDEEP

    768:+b62OgOpRTs+ZexuZXLs1TjYKZKfgm3Eh/K:QKpRTNZ5Ls1TkF7EJK

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/860972377819054132/xTrMhIPKDKBt7a1Z6CyGyp0AIKaeE4u5caYubO1zoqd2IyeZtC0WvY-t7Vmhhy36y2o-

Signatures

  • Mercurial Grabber Stealer

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

  • Mercurialgrabber family
  • 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.

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
  • Looks up external IP address via web service 2 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.

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

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor 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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b1faa78d4779adbd4c7e4a9a428a1247.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b1faa78d4779adbd4c7e4a9a428a1247.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Checks SCSI registry key(s)
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2736
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2736 -s 1452
      2⤵
        PID:2916

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2736-0-0x000007FEF5163000-0x000007FEF5164000-memory.dmp

      Filesize

      4KB

    • memory/2736-1-0x00000000012E0000-0x00000000012F0000-memory.dmp

      Filesize

      64KB

    • memory/2736-2-0x000007FEF5160000-0x000007FEF5B4C000-memory.dmp

      Filesize

      9.9MB

    • memory/2736-3-0x000007FEF5163000-0x000007FEF5164000-memory.dmp

      Filesize

      4KB

    • memory/2736-4-0x000007FEF5160000-0x000007FEF5B4C000-memory.dmp

      Filesize

      9.9MB

    • memory/2736-5-0x000007FEF5160000-0x000007FEF5B4C000-memory.dmp

      Filesize

      9.9MB