Analysis

  • max time kernel
    149s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    30-05-2024 22:53

General

  • Target

    684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe

  • Size

    90KB

  • MD5

    c4f8742a794575102f1cf3e9c1080d81

  • SHA1

    81e63f566a45ca620b31ded118e6639d5fcdb989

  • SHA256

    684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68

  • SHA512

    bc076cf9de95dac7273883b66604c63ee936dd1cc906f783a2ce4b794a7b362047e3e0a756d3194a165cb4a541d818624a2d03ef08a01d4c6da85b39e022e066

  • 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) 20 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 5 IoCs
  • UPX packed file 21 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\684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe
    "C:\Users\Admin\AppData\Local\Temp\684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2792
    • C:\Users\Admin\AppData\Local\Temp\684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe
      "C:\Users\Admin\AppData\Local\Temp\684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:332
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\EFBBW.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1584
        • 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:768
      • 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:1552
        • 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:2576
        • C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
          4⤵
          • Executes dropped EXE
          PID:1228

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\EFBBW.bat
    Filesize

    145B

    MD5

    4eb61ec7816c34ec8c125acadc57ec1b

    SHA1

    b0015cc865c0bb1a027be663027d3829401a31cc

    SHA256

    08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

    SHA512

    f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

    90KB

    MD5

    1a8a7649e91438f10c3cc1792cc58eba

    SHA1

    f14cc0a35f19f52a9e9620254af4fcabf708977e

    SHA256

    896f7392a5548f8ac26a00edc0c659062d7e45ce168db406b9466a3621faa25a

    SHA512

    7d59794cc5195d280c9ef2d140606c1dcea0a90875b2717d955dd44d3ab242f7b7e5706dc8a0ec316769c9e4cc20a52f2ad715b8c02efec41668ac8b7d1f14ae

  • memory/332-147-0x00000000034B0000-0x0000000003503000-memory.dmp
    Filesize

    332KB

  • memory/332-93-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/332-99-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
    Filesize

    4KB

  • memory/332-101-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/332-105-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/332-104-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/332-252-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/332-109-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/332-103-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/332-97-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/332-95-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/1228-258-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/1228-242-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/1552-153-0x00000000001C0000-0x00000000001C1000-memory.dmp
    Filesize

    4KB

  • memory/1552-163-0x00000000001E0000-0x00000000001E1000-memory.dmp
    Filesize

    4KB

  • memory/1552-174-0x0000000000200000-0x0000000000201000-memory.dmp
    Filesize

    4KB

  • memory/1552-210-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/1552-148-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/1552-244-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/2576-257-0x0000000000400000-0x000000000040B000-memory.dmp
    Filesize

    44KB

  • memory/2792-39-0x0000000000350000-0x0000000000351000-memory.dmp
    Filesize

    4KB

  • memory/2792-15-0x0000000000250000-0x0000000000251000-memory.dmp
    Filesize

    4KB

  • memory/2792-106-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/2792-3-0x0000000000230000-0x0000000000231000-memory.dmp
    Filesize

    4KB

  • memory/2792-5-0x0000000000230000-0x0000000000231000-memory.dmp
    Filesize

    4KB

  • memory/2792-0-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/2792-27-0x0000000000270000-0x0000000000271000-memory.dmp
    Filesize

    4KB

  • memory/2792-92-0x00000000004D0000-0x0000000000523000-memory.dmp
    Filesize

    332KB

  • memory/2792-59-0x0000000000390000-0x0000000000391000-memory.dmp
    Filesize

    4KB

  • memory/2792-67-0x0000000000404000-0x0000000000405000-memory.dmp
    Filesize

    4KB

  • memory/2792-88-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/2792-91-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/2792-81-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/2792-70-0x00000000003B0000-0x00000000003B1000-memory.dmp
    Filesize

    4KB

  • memory/2792-78-0x00000000003D0000-0x00000000003D2000-memory.dmp
    Filesize

    8KB

  • memory/2792-80-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB