Analysis

  • max time kernel
    152s
  • 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
    04-06-2024 03:50

General

  • Target

    938b38ef7f759bdccbbcae2a6740f28a_JaffaCakes118.exe

  • Size

    57KB

  • MD5

    938b38ef7f759bdccbbcae2a6740f28a

  • SHA1

    5d93c1cab222bbc49a1901e04d6af48fa0bce8c6

  • SHA256

    10886654aad09e418ee08c3383f36d7b3ddfeb0272c353a1523a25a0236ed452

  • SHA512

    3d64e1e0e090ac41aff0c45d6506a4b9c4ece3c0e41995f3651b92a036f086374ed6d3063f0ea2cb03cdd440c368482c2db58c5346d793470d4d8581d9e2a3fd

  • SSDEEP

    1536:BV2sXSAXRaaWipfv5ErqR4x0qZXPoGJco:BVTSAXjWipfv5hR4yqZw8

Malware Config

Signatures

  • Reads user/profile data of web browsers 2 TTPs

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

  • UPX packed file 8 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 2 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\938b38ef7f759bdccbbcae2a6740f28a_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\938b38ef7f759bdccbbcae2a6740f28a_JaffaCakes118.exe"
    1⤵
    • Writes to the Master Boot Record (MBR)
    • Suspicious behavior: RenamesItself
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3264
    • \??\c:\4mvp\Kaggbjn.exe
      launch
      2⤵
      • Adds Run key to start application
      • Enumerates connected drives
      • Writes to the Master Boot Record (MBR)
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:4552
  • 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 --mojo-platform-channel-handle=3688 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4924

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/3264-27-0x0000000002220000-0x0000000002221000-memory.dmp

      Filesize

      4KB

    • memory/3264-23-0x0000000000400000-0x0000000000421000-memory.dmp

      Filesize

      132KB

    • memory/3264-2-0x0000000010000000-0x0000000010021000-memory.dmp

      Filesize

      132KB

    • memory/3264-5-0x0000000010000000-0x0000000010021000-memory.dmp

      Filesize

      132KB

    • memory/3264-28-0x0000000010000000-0x0000000010021000-memory.dmp

      Filesize

      132KB

    • memory/3264-6-0x0000000010000000-0x0000000010021000-memory.dmp

      Filesize

      132KB

    • memory/3264-1-0x0000000002220000-0x0000000002221000-memory.dmp

      Filesize

      4KB

    • memory/3264-7-0x0000000000400000-0x0000000000421000-memory.dmp

      Filesize

      132KB

    • memory/3264-4-0x0000000010000000-0x0000000010021000-memory.dmp

      Filesize

      132KB

    • memory/3264-0-0x0000000000400000-0x0000000000421000-memory.dmp

      Filesize

      132KB

    • memory/4552-14-0x0000000010000000-0x0000000010021000-memory.dmp

      Filesize

      132KB

    • memory/4552-15-0x0000000010000000-0x0000000010021000-memory.dmp

      Filesize

      132KB

    • memory/4552-13-0x0000000000560000-0x0000000000561000-memory.dmp

      Filesize

      4KB

    • memory/4552-8-0x0000000000400000-0x0000000000421000-memory.dmp

      Filesize

      132KB

    • memory/4552-30-0x0000000000400000-0x0000000000421000-memory.dmp

      Filesize

      132KB

    • memory/4552-31-0x0000000010000000-0x0000000010021000-memory.dmp

      Filesize

      132KB