Analysis

  • max time kernel
    111s
  • max time network
    98s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    27-11-2022 16:07

General

  • Target

    4c316c9eb117f7cc8084f04098a5f03469690bc4fe4a449ae369a4b6ec49a9e0.exe

  • Size

    329KB

  • MD5

    3fbd95361e604f32a1f7fc19aa896361

  • SHA1

    7edf9fad5c4a6927eac6d6e83a5b8eeae3095fde

  • SHA256

    4c316c9eb117f7cc8084f04098a5f03469690bc4fe4a449ae369a4b6ec49a9e0

  • SHA512

    86fcd9f548f89e77e9734d0582f3f9351fc2b8b83183638850e1298e0fe6ad22f9b3c3651bf5427f5d31604734bc27370a40ddca7fdcc85e398619044b48aa89

  • SSDEEP

    6144:QqpxvlACym6wGGWFGDwZyoJ3fzBeM6SpktqHQI6mVk8cL3/CzYjsHh:QqjvlA06wLBHAf9eMvHwmVkhL36zYwHh

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Possible privilege escalation attempt 4 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Deletes itself 1 IoCs
  • Modifies file permissions 1 TTPs 4 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 4 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Maps connected drives based on registry 3 TTPs 3 IoCs

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

  • Drops file in System32 directory 4 IoCs
  • Modifies registry class 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: LoadsDriver 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4c316c9eb117f7cc8084f04098a5f03469690bc4fe4a449ae369a4b6ec49a9e0.exe
    "C:\Users\Admin\AppData\Local\Temp\4c316c9eb117f7cc8084f04098a5f03469690bc4fe4a449ae369a4b6ec49a9e0.exe"
    1⤵
    • Drops file in Drivers directory
    • Sets service image path in registry
    • Installs/modifies Browser Helper Object
    • Maps connected drives based on registry
    • Drops file in System32 directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: LoadsDriver
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1052
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c takeown /f C:\Windows\SysWOW64\wshtcpip.dll && icacls C:\Windows\SysWOW64\wshtcpip.dll /grant administrators:F
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1632
      • C:\Windows\SysWOW64\takeown.exe
        takeown /f C:\Windows\SysWOW64\wshtcpip.dll
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        • Suspicious use of AdjustPrivilegeToken
        PID:1968
      • C:\Windows\SysWOW64\icacls.exe
        icacls C:\Windows\SysWOW64\wshtcpip.dll /grant administrators:F
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:1964
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c takeown /f C:\Windows\SysWOW64\midimap.dll && icacls C:\Windows\SysWOW64\midimap.dll /grant administrators:F
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1784
      • C:\Windows\SysWOW64\takeown.exe
        takeown /f C:\Windows\SysWOW64\midimap.dll
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        • Suspicious use of AdjustPrivilegeToken
        PID:1936
      • C:\Windows\SysWOW64\icacls.exe
        icacls C:\Windows\SysWOW64\midimap.dll /grant administrators:F
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:1676
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c C:\Users\Admin\AppData\Local\Temp\ahnmove.bat
      2⤵
      • Deletes itself
      PID:1988

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Browser Extensions

1
T1176

Defense Evasion

Modify Registry

2
T1112

File Permissions Modification

1
T1222

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

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

    181B

    MD5

    ad328b02bd518ed083a6dc0e654d23ca

    SHA1

    03a6d9920754d51116f183899ed8c5025fc90870

    SHA256

    0525089c4d0c489545370da46819ef72524257b338bbe7514be77a9ab89b9756

    SHA512

    cdcb34cac8d9225692b177e7794d14337bf7c11f39e150edfbaf3c3085ac4e97fd891beb2f51840f99fa522cd4b52e6874a0d4a1834e651cb582ef3672498806

  • memory/1052-55-0x0000000001000000-0x0000000001168000-memory.dmp
    Filesize

    1.4MB

  • memory/1052-56-0x0000000000220000-0x0000000000240000-memory.dmp
    Filesize

    128KB

  • memory/1052-57-0x0000000001000000-0x0000000001168000-memory.dmp
    Filesize

    1.4MB

  • memory/1052-58-0x0000000000220000-0x0000000000240000-memory.dmp
    Filesize

    128KB

  • memory/1052-66-0x0000000001000000-0x0000000001168000-memory.dmp
    Filesize

    1.4MB

  • memory/1052-54-0x00000000760A1000-0x00000000760A3000-memory.dmp
    Filesize

    8KB

  • memory/1632-59-0x0000000000000000-mapping.dmp
  • memory/1676-64-0x0000000000000000-mapping.dmp
  • memory/1784-62-0x0000000000000000-mapping.dmp
  • memory/1936-63-0x0000000000000000-mapping.dmp
  • memory/1964-61-0x0000000000000000-mapping.dmp
  • memory/1968-60-0x0000000000000000-mapping.dmp
  • memory/1988-65-0x0000000000000000-mapping.dmp