Analysis

  • max time kernel
    40s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20/06/2022, 00:18

General

  • Target

    33c3fc18511d4739f5cb682fa0ec461b4d1b5557b1dcb19126f9c349a905beb6.exe

  • Size

    1.7MB

  • MD5

    651507c29e0b8709747bbc16f0daa05b

  • SHA1

    f7c9d203bee8b4266a365ae2667c855f1f70404a

  • SHA256

    33c3fc18511d4739f5cb682fa0ec461b4d1b5557b1dcb19126f9c349a905beb6

  • SHA512

    69380fc1b3dc23a7c7ed926da649056600b3731bdbcf6776e0d87a3e38d50d1f84c6f054eb3b9d2f870fae3725b966015e9d29eeb457898cae016c12766fb0c1

Malware Config

Extracted

Family

cryptbot

C2

jugzsh72.top

Signatures

  • CryptBot

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

  • Deletes itself 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\33c3fc18511d4739f5cb682fa0ec461b4d1b5557b1dcb19126f9c349a905beb6.exe
    "C:\Users\Admin\AppData\Local\Temp\33c3fc18511d4739f5cb682fa0ec461b4d1b5557b1dcb19126f9c349a905beb6.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1284
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\KMjCgydo & timeout 4 & del /f /q "C:\Users\Admin\AppData\Local\Temp\33c3fc18511d4739f5cb682fa0ec461b4d1b5557b1dcb19126f9c349a905beb6.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1356
      • C:\Windows\SysWOW64\timeout.exe
        timeout 4
        3⤵
        • Delays execution with timeout.exe
        PID:1156

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1284-54-0x0000000000400000-0x00000000005A8000-memory.dmp

    Filesize

    1.7MB

  • memory/1284-55-0x00000000759F1000-0x00000000759F3000-memory.dmp

    Filesize

    8KB

  • memory/1284-57-0x0000000000400000-0x00000000005A8000-memory.dmp

    Filesize

    1.7MB

  • memory/1284-58-0x00000000002B0000-0x00000000002F0000-memory.dmp

    Filesize

    256KB

  • memory/1284-60-0x0000000001FD0000-0x0000000002017000-memory.dmp

    Filesize

    284KB

  • memory/1284-67-0x0000000000400000-0x00000000005A8000-memory.dmp

    Filesize

    1.7MB

  • memory/1284-68-0x00000000002B0000-0x00000000002F0000-memory.dmp

    Filesize

    256KB