Analysis

  • max time kernel
    149s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    04-06-2024 23:12

General

  • Target

    75e7be8f467d55b479d346a0d45e91b7589b20fca4292c21a62f03c775424fc2.exe

  • Size

    90KB

  • MD5

    7ae1b36cec224de2d9828f0218890fc2

  • SHA1

    5f386a32e1d2817540c61807c2a88a103b59a0ac

  • SHA256

    75e7be8f467d55b479d346a0d45e91b7589b20fca4292c21a62f03c775424fc2

  • SHA512

    bf35e301e5b822d3dbe543074f5fe7dc177324e40fbea20f67e94880fa7c53b11adf88b3cd574c8b00f69a5512ee9b9147b6300b383bf866072733e9002734c4

  • 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 1 IoCs
  • ModiLoader Second Stage 1 IoCs
  • UPX dump on OEP (original entry point) 22 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 5 IoCs
  • UPX packed file 23 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 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\75e7be8f467d55b479d346a0d45e91b7589b20fca4292c21a62f03c775424fc2.exe
    "C:\Users\Admin\AppData\Local\Temp\75e7be8f467d55b479d346a0d45e91b7589b20fca4292c21a62f03c775424fc2.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2220
    • C:\Users\Admin\AppData\Local\Temp\75e7be8f467d55b479d346a0d45e91b7589b20fca4292c21a62f03c775424fc2.exe
      "C:\Users\Admin\AppData\Local\Temp\75e7be8f467d55b479d346a0d45e91b7589b20fca4292c21a62f03c775424fc2.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3056
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\CHVUG.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1968
        • 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:2192
      • 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:2448
        • 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:1508
        • C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
          4⤵
          • Executes dropped EXE
          PID:648

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

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\CHVUG.bat
    Filesize

    145B

    MD5

    4eb61ec7816c34ec8c125acadc57ec1b

    SHA1

    b0015cc865c0bb1a027be663027d3829401a31cc

    SHA256

    08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

    SHA512

    f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

    90KB

    MD5

    0afb7808392ef2ca4b917863016585c5

    SHA1

    c9d78c469334d23b22ec128b1314cb4fc7e40ace

    SHA256

    1fecd7014681649cdad3407388e6bca3f8fcee029d54298600fa703c6a1e6c30

    SHA512

    11597b711b1ef6fc07e1b143848c2c7632ec220a7c5844e9e226967fd4fa1a2bf42da5d90556da77e469506a82b41cce51308aa2156821c4c3349590d940412e

  • memory/648-245-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/648-260-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/1508-261-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/2220-60-0x00000000003E0000-0x00000000003E1000-memory.dmp
    Filesize

    4KB

  • memory/2220-39-0x0000000000390000-0x0000000000391000-memory.dmp
    Filesize

    4KB

  • memory/2220-5-0x00000000002F0000-0x00000000002F1000-memory.dmp
    Filesize

    4KB

  • memory/2220-49-0x0000000000404000-0x0000000000405000-memory.dmp
    Filesize

    4KB

  • memory/2220-78-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/2220-85-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/2220-92-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/2220-82-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/2220-81-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/2220-79-0x0000000000480000-0x0000000000482000-memory.dmp
    Filesize

    8KB

  • memory/2220-93-0x0000000002510000-0x0000000002563000-memory.dmp
    Filesize

    332KB

  • memory/2220-70-0x0000000000460000-0x0000000000461000-memory.dmp
    Filesize

    4KB

  • memory/2220-27-0x0000000000370000-0x0000000000371000-memory.dmp
    Filesize

    4KB

  • memory/2220-0-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/2220-3-0x00000000002F0000-0x00000000002F1000-memory.dmp
    Filesize

    4KB

  • memory/2220-109-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/2220-15-0x0000000000310000-0x0000000000311000-memory.dmp
    Filesize

    4KB

  • memory/2448-166-0x0000000000260000-0x0000000000261000-memory.dmp
    Filesize

    4KB

  • memory/2448-244-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/2448-177-0x0000000000280000-0x0000000000281000-memory.dmp
    Filesize

    4KB

  • memory/2448-250-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/2448-151-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/2448-156-0x0000000000240000-0x0000000000241000-memory.dmp
    Filesize

    4KB

  • memory/3056-105-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/3056-149-0x0000000003480000-0x00000000034D3000-memory.dmp
    Filesize

    332KB

  • memory/3056-150-0x0000000003480000-0x00000000034D3000-memory.dmp
    Filesize

    332KB

  • memory/3056-96-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/3056-98-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/3056-100-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
    Filesize

    4KB

  • memory/3056-102-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/3056-104-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/3056-253-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/3056-107-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/3056-94-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB