Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-03-2024 15:02

General

  • Target

    57acc051bce36cfa9a1edb5b31afe446_JaffaCakes118.exe

  • Size

    630KB

  • MD5

    57acc051bce36cfa9a1edb5b31afe446

  • SHA1

    2a0c67762fc6daf713186f6e81103f9d46d1b335

  • SHA256

    e0717d72527dff9703a960164ce687857dabda14ad23fff08070a022cefbe5d3

  • SHA512

    1db6a0688bdd88c27c04cbfd6e3448bae95435e2700072516d56660ce007b7c34699d107fa83c970a9f2209b524b349b8fcf6877e8944adadcfe0ba1218ba32a

  • SSDEEP

    12288:tfxwHtm1BlmsMzkoyLOQ7PV942TmbVN5h8OJFBFGxm9kChP/cakIetDl:pqtWlmaoyyQDVKcmbVN5mOT3G

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/897216012603256842/Zf1W7RTuEyIvXw2r12OgP8sa8I5_odqhiTlFF6XnWhig090X7dOOZ6hDa2OY4AoeRrjc

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.

  • Reads user/profile data of web browsers 2 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 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.

  • Program crash 1 IoCs
  • 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 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\57acc051bce36cfa9a1edb5b31afe446_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\57acc051bce36cfa9a1edb5b31afe446_JaffaCakes118.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1444
    • C:\Users\Admin\AppData\Local\Temp\57acc051bce36cfa9a1edb5b31afe446_JaffaCakes118.exe
      "57acc051bce36cfa9a1edb5b31afe446_JaffaCakes118.exe"
      2⤵
      • 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)
      • Enumerates system info in registry
      • Modifies system certificate store
      • Suspicious use of AdjustPrivilegeToken
      PID:876
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 876 -s 2604
        3⤵
        • Program crash
        PID:3144
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 876 -ip 876
    1⤵
      PID:4028

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\57acc051bce36cfa9a1edb5b31afe446_JaffaCakes118.exe.log

      Filesize

      425B

      MD5

      4eaca4566b22b01cd3bc115b9b0b2196

      SHA1

      e743e0792c19f71740416e7b3c061d9f1336bf94

      SHA256

      34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

      SHA512

      bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

    • memory/876-7-0x0000000000400000-0x0000000000420000-memory.dmp

      Filesize

      128KB

    • memory/876-18-0x00000000747E0000-0x0000000074F90000-memory.dmp

      Filesize

      7.7MB

    • memory/876-12-0x0000000005200000-0x0000000005210000-memory.dmp

      Filesize

      64KB

    • memory/876-11-0x00000000747E0000-0x0000000074F90000-memory.dmp

      Filesize

      7.7MB

    • memory/1444-6-0x00000000059F0000-0x0000000005A1A000-memory.dmp

      Filesize

      168KB

    • memory/1444-0-0x00000000747E0000-0x0000000074F90000-memory.dmp

      Filesize

      7.7MB

    • memory/1444-5-0x0000000003390000-0x0000000003396000-memory.dmp

      Filesize

      24KB

    • memory/1444-4-0x0000000007D70000-0x0000000007E1C000-memory.dmp

      Filesize

      688KB

    • memory/1444-10-0x00000000747E0000-0x0000000074F90000-memory.dmp

      Filesize

      7.7MB

    • memory/1444-3-0x00000000058E0000-0x00000000058F0000-memory.dmp

      Filesize

      64KB

    • memory/1444-2-0x0000000001990000-0x0000000001996000-memory.dmp

      Filesize

      24KB

    • memory/1444-1-0x0000000000E70000-0x0000000000F16000-memory.dmp

      Filesize

      664KB