Analysis

  • max time kernel
    189s
  • max time network
    195s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/11/2022, 12:19

General

  • Target
    8111bde9cc4c8dcaa55ac80ec25e6005a2569cbb4d7505e2ade63975246086f7.exe
  • Size 522KB
  • Sample221124-pg7lpagb2x
  • SHA256 8111bde9cc4c8dcaa55ac80ec25e6005a2569cbb4d7505e2ade63975246086f7
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Loads dropped DLL 4 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

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

  • Drops file in System32 directory 9 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 46 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 9 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8111bde9cc4c8dcaa55ac80ec25e6005a2569cbb4d7505e2ade63975246086f7.exe
    "C:\Users\Admin\AppData\Local\Temp\8111bde9cc4c8dcaa55ac80ec25e6005a2569cbb4d7505e2ade63975246086f7.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:792
    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\rinst.exe
      "C:\Users\Admin\AppData\Local\Temp\RarSFX0\rinst.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:2844
      • C:\Windows\SysWOW64\svhost.exe
        C:\Windows\system32\svhost.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Installs/modifies Browser Helper Object
        • Drops file in System32 directory
        • Modifies registry class
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        PID:2172

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        inst.dat

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\inst.dat
        • Size 996B
        • SHA256 a53df002b1abda2b46b31a85a845d2fdaddbc2754abf67d1a007f5043400e9d6
        • MD5 SHA1 SHA512

        kw.dat

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\kw.dat
        • Size 38B
        • SHA256 2d8df1cc46d0e3dd26b808b24f33c525385cfa4f2c9e8e3d7eaaf369b77221a7
        • MD5 SHA1 SHA512

        mc.dat

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\mc.dat
        • Size 45B
        • SHA256 36498932e4b61ddf9fe0082379bd84892fa42ef5dbcc1fdca13b605bca2a663d
        • MD5 SHA1 SHA512

        pk.bin

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\pk.bin
        • Size 4KB
        • SHA256 9955b045f30adab5206f6409d922fa8391ae32334c183d2e055a90026f838e72
        • MD5 SHA1 SHA512 SSDEEP

        rinst.exe

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\rinst.exe
        • Size 7KB
        • SHA256 446658dd5af649857fff445c600f26cdc1d0c19c86a080f312b89b1890182092
        • MD5 SHA1 SHA512 SSDEEP

        rinst.exe

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\rinst.exe
        • Size 7KB
        • SHA256 446658dd5af649857fff445c600f26cdc1d0c19c86a080f312b89b1890182092
        • MD5 SHA1 SHA512 SSDEEP

        svhost.exe

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\svhost.exe
        • Size 428KB
        • SHA256 9b14a9759275f336d6c0d93958719d92e63e6ca2a7e26c8fbb9a5b50c21dc046
        • MD5 SHA1 SHA512 SSDEEP

        svhosthk.dll

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\svhosthk.dll
        • Size 24KB
        • SHA256 10426efbc20b02723346161250f35578ccbc4dd35afe2e7d700b6fd679980725
        • MD5 SHA1 SHA512 SSDEEP

        svhostwb.dll

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\svhostwb.dll
        • Size 40KB
        • SHA256 9b18860bc9097eb644ed7a96e331dd3a56ef6c10b2c2342142dca0875ed75c04
        • MD5 SHA1 SHA512 SSDEEP

        inst.dat

        • Path C:\Windows\SysWOW64\inst.dat
        • Size 996B
        • SHA256 a53df002b1abda2b46b31a85a845d2fdaddbc2754abf67d1a007f5043400e9d6
        • MD5 SHA1 SHA512

        kw.dat

        • Path C:\Windows\SysWOW64\kw.dat
        • Size 38B
        • SHA256 56b0b53b28de4333196d0f7f1581bb1581195b2168221473adb95d8b3a4afb34
        • MD5 SHA1 SHA512

        mc.dat

        • Path C:\Windows\SysWOW64\mc.dat
        • Size 45B
        • SHA256 e18f5798a1cb112efb1966f76eb243c05d1eae0aaca690647dd80f30cfa7e5d1
        • MD5 SHA1 SHA512

        pk.bin

        • Path C:\Windows\SysWOW64\pk.bin
        • Size 4KB
        • SHA256 4829a110519cc2bc487d48a11f021872a4125df3c964d7439650aa6583550f7f
        • MD5 SHA1 SHA512 SSDEEP

        rinst.exe

        • Path C:\Windows\SysWOW64\rinst.exe
        • Size 7KB
        • SHA256 446658dd5af649857fff445c600f26cdc1d0c19c86a080f312b89b1890182092
        • MD5 SHA1 SHA512 SSDEEP

        svhost.exe

        • Path C:\Windows\SysWOW64\svhost.exe
        • Size 428KB
        • SHA256 a8cea204954ffa11134f0be8ac0fed6c9939b54c369cc7f8312059c0a601c390
        • MD5 SHA1 SHA512 SSDEEP

        svhost.exe

        • Path C:\Windows\SysWOW64\svhost.exe
        • Size 428KB
        • SHA256 a8cea204954ffa11134f0be8ac0fed6c9939b54c369cc7f8312059c0a601c390
        • MD5 SHA1 SHA512 SSDEEP

        svhosthk.dll

        • Path C:\Windows\SysWOW64\svhosthk.dll
        • Size 24KB
        • SHA256 93c0e7f41d5d74217189e4cc2d5cdb8f97d8e5eeef0a0dcf4cecd67e3393682c
        • MD5 SHA1 SHA512 SSDEEP

        svhosthk.dll

        • Path C:\Windows\SysWOW64\svhosthk.dll
        • Size 24KB
        • SHA256 93c0e7f41d5d74217189e4cc2d5cdb8f97d8e5eeef0a0dcf4cecd67e3393682c
        • MD5 SHA1 SHA512 SSDEEP

        svhosthk.dll

        • Path C:\Windows\SysWOW64\svhosthk.dll
        • Size 24KB
        • SHA256 93c0e7f41d5d74217189e4cc2d5cdb8f97d8e5eeef0a0dcf4cecd67e3393682c
        • MD5 SHA1 SHA512 SSDEEP

        svhostwb.dll

        • Path C:\Windows\SysWOW64\svhostwb.dll
        • Size 40KB
        • SHA256 3285df0c25d4b9b6d5ccbe166a3ce3d04f5cb3a0d61c8bf29bf5f953e51b0977
        • MD5 SHA1 SHA512 SSDEEP

        svhostwb.dll

        • Path C:\Windows\SysWOW64\svhostwb.dll
        • Size 40KB
        • SHA256 3285df0c25d4b9b6d5ccbe166a3ce3d04f5cb3a0d61c8bf29bf5f953e51b0977
        • MD5 SHA1 SHA512 SSDEEP

        svhostwb.dll

        • Path C:\Windows\SysWOW64\svhostwb.dll
        • Size 40KB
        • SHA256 3285df0c25d4b9b6d5ccbe166a3ce3d04f5cb3a0d61c8bf29bf5f953e51b0977
        • MD5 SHA1 SHA512 SSDEEP

        memory/2172-155-0x00000000026F1000-0x00000000026F5000-memory.dmp