Analysis

  • max time kernel
    144s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/01/2024, 01:58

General

  • Target
    6c0f27024f875a94386862cfb5f0d2c8.exe
  • Size 773KB
  • Sample240121-cdx7macdhm
  • SHA256 f2dae5d58761bc67d2fac18381a2ee7e61d5eea79c32c718a7b97ec183a2489a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • cryptbot

C2
  • ewaosm65.top

  • moruat06.top

Attributes
  • payload_url

    http://winazr08.top/download.php?file=lv.exe

Signatures

  • CryptBot

    A C++ stealer distributed widely in bundle with other software.

  • CryptBot payload 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6c0f27024f875a94386862cfb5f0d2c8.exe
    "C:\Users\Admin\AppData\Local\Temp\6c0f27024f875a94386862cfb5f0d2c8.exe"
    1⤵
    • Checks computer location settings
    • Checks processor information in registry
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:2160
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2160 -s 1308
      2⤵
      • Program crash
      PID:2720
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\bsFArovHkIJc & timeout 3 & del /f /q "C:\Users\Admin\AppData\Local\Temp\6c0f27024f875a94386862cfb5f0d2c8.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4792
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2160 -ip 2160
    1⤵
      PID:5028
    • C:\Windows\SysWOW64\timeout.exe
      timeout 3
      1⤵
      • Delays execution with timeout.exe
      PID:2044

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          HKMTMO~1.ZIP

          • Path C:\Users\Admin\AppData\Local\Temp\bsFArovHkIJc\HKMTMO~1.ZIP
          • Size 1KB
          • SHA256 a68b4918a5f1f1b9e147bb6d519bbec42c98172599d5ba5eb6e14b3eeb27a6d6
          • MD5 SHA1 SHA512

          OLOLPJ~1.ZIP

          • Path C:\Users\Admin\AppData\Local\Temp\bsFArovHkIJc\OLOLPJ~1.ZIP
          • Size 35KB
          • SHA256 56ee88480492f06149f94c774dfe0664bbc1dedd22fc0e1017e51fd280081b0a
          • MD5 SHA1 SHA512 SSDEEP

          CONFIR~1.TXT

          • Path C:\Users\Admin\AppData\Local\Temp\bsFArovHkIJc\_Files\_Files\CONFIR~1.TXT
          • Size 1KB
          • SHA256 b8a6377c6c151a474e14669a0f178c0690f8ca6aa5460d65440014083f5f5b4c
          • MD5 SHA1 SHA512

          ConfirmWait.txt

          • Path C:\Users\Admin\AppData\Local\Temp\bsFArovHkIJc\_Files\_Files\ConfirmWait.txt
          • Size 745KB
          • SHA256 2a94b8c796d9dc175199377b3d5e4053820c56e1d02ced3c72b9f16728d8f778
          • MD5 SHA1 SHA512 SSDEEP

          _INFOR~1.TXT

          • Path C:\Users\Admin\AppData\Local\Temp\bsFArovHkIJc\_Files\_INFOR~1.TXT
          • Size 7KB
          • SHA256 119ae36f18f3c18ad69c28ce4837eceb255ef83cf53d9c4df0b27033832235e7
          • MD5 SHA1 SHA512 SSDEEP

          _Information.txt

          • Path C:\Users\Admin\AppData\Local\Temp\bsFArovHkIJc\_Files\_Information.txt
          • Size 1KB
          • SHA256 0ec0a24f7e41ef0d28f0d918ee2acd7ce7b7dcde77f89c4b93478d73559f8d0a
          • MD5 SHA1 SHA512

          _Information.txt

          • Path C:\Users\Admin\AppData\Local\Temp\bsFArovHkIJc\_Files\_Information.txt
          • Size 4KB
          • SHA256 141333ca32bc50c5f871ee9d34c76161be9f35cbb3642f2752ea75f22538e91b
          • MD5 SHA1 SHA512 SSDEEP

          _Screen_Desktop.jpeg

          • Path C:\Users\Admin\AppData\Local\Temp\bsFArovHkIJc\_Files\_Screen_Desktop.jpeg
          • Size 45KB
          • SHA256 57360b37423133d44e27ac175716d11494cf89aff3c0723318f8e75363be7f11
          • MD5 SHA1 SHA512 SSDEEP

          CONFIR~1.TXT

          • Path C:\Users\Admin\AppData\Local\Temp\bsFArovHkIJc\files_\files\CONFIR~1.TXT
          • Size 116KB
          • SHA256 13f75dadffd4c9b4396d0b32a2f0aa03bef11a459e98657c72223ffc5dc45f8d
          • MD5 SHA1 SHA512 SSDEEP

          system_info.txt

          • Path C:\Users\Admin\AppData\Local\Temp\bsFArovHkIJc\files_\system_info.txt
          • Size 1KB
          • SHA256 2c2a44a3c79b8e49f79565d15d3b85c2f841c5e4b4fb647249e1e604f974ef17
          • MD5 SHA1 SHA512

          system_info.txt

          • Path C:\Users\Admin\AppData\Local\Temp\bsFArovHkIJc\files_\system_info.txt
          • Size 4KB
          • SHA256 f086edb06fd3583c25a9f49056c672837261112fa366d364a1504478f8e2ac09
          • MD5 SHA1 SHA512 SSDEEP

          memory/2160-1-0x0000000003580000-0x0000000003680000-memory.dmp

          memory/2160-3-0x0000000000400000-0x00000000032BB000-memory.dmp

          memory/2160-2-0x0000000005020000-0x0000000005101000-memory.dmp

          memory/2160-228-0x0000000000400000-0x00000000032BB000-memory.dmp

          memory/2160-229-0x0000000005020000-0x0000000005101000-memory.dmp