Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-06-2024 04:41

General

  • Target

    f924aa58a22b7851a2c8f63e1b8dde04f6263661da655288f1a182463bcb9633.exe

  • Size

    90KB

  • MD5

    1fadb498c80f984ffcdaf55d673c37f0

  • SHA1

    bca0473b73f9ed2fce345e9cb1cdebc1b250e86d

  • SHA256

    f924aa58a22b7851a2c8f63e1b8dde04f6263661da655288f1a182463bcb9633

  • SHA512

    12d700c1602f28a287586b0c6a310075355e9bcfefa692cce88d7e4c5be6b5c259ec58964146d16cd619a2e192cc66d02d1755e54068253cdfd513941067284e

  • 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 18 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\f924aa58a22b7851a2c8f63e1b8dde04f6263661da655288f1a182463bcb9633.exe
    "C:\Users\Admin\AppData\Local\Temp\f924aa58a22b7851a2c8f63e1b8dde04f6263661da655288f1a182463bcb9633.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1488
    • C:\Users\Admin\AppData\Local\Temp\f924aa58a22b7851a2c8f63e1b8dde04f6263661da655288f1a182463bcb9633.exe
      "C:\Users\Admin\AppData\Local\Temp\f924aa58a22b7851a2c8f63e1b8dde04f6263661da655288f1a182463bcb9633.exe"
      2⤵
      • Checks computer location settings
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:800
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\SRDLD.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1012
        • 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:2740
      • 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:4504
        • 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:5012
        • C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
          4⤵
          • Executes dropped EXE
          PID:1476

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\SRDLD.txt

    Filesize

    145B

    MD5

    4eb61ec7816c34ec8c125acadc57ec1b

    SHA1

    b0015cc865c0bb1a027be663027d3829401a31cc

    SHA256

    08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

    SHA512

    f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

    Filesize

    90KB

    MD5

    a84b2653a0c86b8b3b05a040665eb296

    SHA1

    1504da9e6942d2eeb801ad0f2842682ea5c8adae

    SHA256

    d3ee1deef04ba58c6ecbd8e3e74bc39cb831a4ef6b010639ec6aa18c44fae950

    SHA512

    3f5d8bc3d9e10b79ce79133cb87919f2d0b8f99f04541a645885a336480f4f347cf31f64df5ba7ff20aff6290f025b7a7304a9b7900688fd4b455b72df2226ba

  • memory/800-11-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/800-3-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/800-9-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/800-59-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/1476-61-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1476-52-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1476-50-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1476-48-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1476-53-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1476-49-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1476-44-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1488-7-0x00000000021D0000-0x00000000021D2000-memory.dmp

    Filesize

    8KB

  • memory/1488-6-0x00000000021C0000-0x00000000021C2000-memory.dmp

    Filesize

    8KB

  • memory/1488-0-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/1488-12-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/1488-8-0x00000000021F0000-0x00000000021F2000-memory.dmp

    Filesize

    8KB

  • memory/4504-41-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/4504-35-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/4504-56-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/5012-60-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB