Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-05-2024 22:00

General

  • Target

    5a22028b50a298bdb1f01d34de882dc9e74dda98de07f39c548b72a775ca0fc2.exe

  • Size

    90KB

  • MD5

    27cdd9620bd0a1b07f2dfa2d42844864

  • SHA1

    5573c3e283e941d926c794d6ecf87dbe20d5858a

  • SHA256

    5a22028b50a298bdb1f01d34de882dc9e74dda98de07f39c548b72a775ca0fc2

  • SHA512

    f618cf4e83a8c7ac385445d03a9187e9f46f21b548e5536d4988b3d3c458dfad9834064173ed934e8163f7642d58e8d9c246ab707fa27827620c0a663531ce44

  • SSDEEP

    1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y

Malware Config

Signatures

  • ModiLoader, DBatLoader

    ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

  • Detects Windows executables referencing non-Windows User-Agents 5 IoCs
  • ModiLoader Second Stage 5 IoCs
  • UPX dump on OEP (original entry point) 18 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 3 IoCs
  • UPX packed file 19 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5a22028b50a298bdb1f01d34de882dc9e74dda98de07f39c548b72a775ca0fc2.exe
    "C:\Users\Admin\AppData\Local\Temp\5a22028b50a298bdb1f01d34de882dc9e74dda98de07f39c548b72a775ca0fc2.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1848
    • C:\Users\Admin\AppData\Local\Temp\5a22028b50a298bdb1f01d34de882dc9e74dda98de07f39c548b72a775ca0fc2.exe
      "C:\Users\Admin\AppData\Local\Temp\5a22028b50a298bdb1f01d34de882dc9e74dda98de07f39c548b72a775ca0fc2.exe"
      2⤵
      • Checks computer location settings
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3372
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BMTXJ.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4040
        • C:\Windows\SysWOW64\reg.exe
          REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Win Pdf" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe" /f
          4⤵
          • Adds Run key to start application
          PID:880
      • C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1468
        • C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:2036
        • C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
          4⤵
          • Executes dropped EXE
          PID:2364
  • 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=4008,i,5711962389779687290,1245653010537220991,262144 --variations-seed-version --mojo-platform-channel-handle=4100 /prefetch:8
    1⤵
      PID:1236

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Persistence

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Privilege Escalation

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Defense Evasion

    Modify Registry

    1
    T1112

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\BMTXJ.txt
      Filesize

      145B

      MD5

      4eb61ec7816c34ec8c125acadc57ec1b

      SHA1

      b0015cc865c0bb1a027be663027d3829401a31cc

      SHA256

      08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

      SHA512

      f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

    • C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      Filesize

      90KB

      MD5

      96db9e782761b77f572b6eee6113d553

      SHA1

      732402d81628ca0cc44cf9e26fb144c5f2e86bff

      SHA256

      cf827bc1430ed6ebcfd4764ceb3bf45f5b77c6f601f2bbb1ea93c871b1944b83

      SHA512

      120fb2c980edaa640f6191ac52511975bee9f87e8852c4237ff1480ad93d749c45bf6a92c6ba5f2965801843662ecc694f148afe48862e448701fbea3fa2652c

    • memory/1468-55-0x0000000000400000-0x0000000000453000-memory.dmp
      Filesize

      332KB

    • memory/1468-40-0x0000000000400000-0x0000000000453000-memory.dmp
      Filesize

      332KB

    • memory/1468-34-0x0000000000400000-0x0000000000453000-memory.dmp
      Filesize

      332KB

    • memory/1848-10-0x0000000000400000-0x0000000000453000-memory.dmp
      Filesize

      332KB

    • memory/1848-5-0x00000000022E0000-0x00000000022E2000-memory.dmp
      Filesize

      8KB

    • memory/1848-0-0x0000000000400000-0x0000000000453000-memory.dmp
      Filesize

      332KB

    • memory/1848-4-0x00000000022D0000-0x00000000022D2000-memory.dmp
      Filesize

      8KB

    • memory/1848-6-0x0000000002300000-0x0000000002302000-memory.dmp
      Filesize

      8KB

    • memory/2036-59-0x0000000000400000-0x000000000040B000-memory.dmp
      Filesize

      44KB

    • memory/2364-50-0x0000000000400000-0x0000000000414000-memory.dmp
      Filesize

      80KB

    • memory/2364-42-0x0000000000400000-0x0000000000414000-memory.dmp
      Filesize

      80KB

    • memory/2364-47-0x0000000000400000-0x0000000000414000-memory.dmp
      Filesize

      80KB

    • memory/2364-53-0x0000000000400000-0x0000000000414000-memory.dmp
      Filesize

      80KB

    • memory/2364-52-0x0000000000400000-0x0000000000414000-memory.dmp
      Filesize

      80KB

    • memory/2364-49-0x0000000000400000-0x0000000000414000-memory.dmp
      Filesize

      80KB

    • memory/2364-60-0x0000000000400000-0x0000000000414000-memory.dmp
      Filesize

      80KB

    • memory/3372-8-0x0000000000400000-0x000000000040B000-memory.dmp
      Filesize

      44KB

    • memory/3372-3-0x0000000000400000-0x000000000040B000-memory.dmp
      Filesize

      44KB

    • memory/3372-56-0x0000000000410000-0x00000000004D9000-memory.dmp
      Filesize

      804KB

    • memory/3372-58-0x0000000000400000-0x000000000040B000-memory.dmp
      Filesize

      44KB

    • memory/3372-11-0x0000000000400000-0x000000000040B000-memory.dmp
      Filesize

      44KB