Analysis

  • max time kernel
    65s
  • max time network
    131s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    30/08/2022, 00:10

General

  • Target
    cf648d0d6dc000fee07dbd7b6b04d245.exe
  • Size 767KB
  • Sample220830-af2lqaaae8
  • SHA256 dfdedc4060f4944298bcdf25778b7f7eaaef43fdae61238d7debf88825e66294
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • snakekeylogger

Credentials
C2
  • https://api.telegram.org/bot5321688653:AAEI2yqGrOA_-sRZ3xaqutrexraSgFa0AnA/sendMessage?chat_id=5048077662

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger payload 3 IoCs
  • Checks QEMU agent file 2 TTPs 2 IoCs

    Checks presence of QEMU agent, possibly to detect virtualization.

  • Loads dropped DLL 1 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cf648d0d6dc000fee07dbd7b6b04d245.exe
    "C:\Users\Admin\AppData\Local\Temp\cf648d0d6dc000fee07dbd7b6b04d245.exe"
    1⤵
    • Checks QEMU agent file
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Program Files directory
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1824
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
      "C:\Users\Admin\AppData\Local\Temp\cf648d0d6dc000fee07dbd7b6b04d245.exe"
      2⤵
      • Checks QEMU agent file
      • Accesses Microsoft Outlook profiles
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1928

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        System.dll

        • Path \Users\Admin\AppData\Local\Temp\nsj38DE.tmp\System.dll
        • Size 11KB
        • SHA256 2e226715419a5882e2e14278940ee8ef0aa648a3ef7af5b3dc252674111962bc
        • MD5 SHA1 SHA512 SSDEEP

        memory/1824-67-0x0000000076F20000-0x00000000770A0000-memory.dmp

        memory/1824-56-0x00000000026A0000-0x00000000032EA000-memory.dmp

        memory/1824-57-0x0000000076D40000-0x0000000076EE9000-memory.dmp

        memory/1824-74-0x0000000076F20000-0x00000000770A0000-memory.dmp

        memory/1824-61-0x0000000076F20000-0x00000000770A0000-memory.dmp

        memory/1824-62-0x0000000076F20000-0x00000000770A0000-memory.dmp

        memory/1824-68-0x0000000076F20000-0x00000000770A0000-memory.dmp

        memory/1824-54-0x0000000075571000-0x0000000075573000-memory.dmp

        memory/1928-64-0x0000000076D40000-0x0000000076EE9000-memory.dmp

        memory/1928-63-0x0000000000130000-0x0000000000230000-memory.dmp

        memory/1928-69-0x0000000000130000-0x0000000000230000-memory.dmp

        memory/1928-70-0x0000000000400000-0x0000000000615000-memory.dmp

        memory/1928-71-0x0000000000401000-0x0000000000615000-memory.dmp

        memory/1928-73-0x0000000000400000-0x0000000000426000-memory.dmp