Analysis

  • max time kernel
    862s
  • max time network
    880s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    11-07-2021 14:10

General

  • Target

    keygen-step-6.exe

  • Size

    249KB

  • MD5

    b40756c7263aab67d11a6b0d9892b10a

  • SHA1

    323b2d011e8e33171acdbfd2592e8b2564716588

  • SHA256

    ad22b1e690fac416da97d49ff6a14c7f5ef7804bfadabff993e7bf9d2570c1fa

  • SHA512

    9a8fe605aeb30ea968222fc6ae4aa6e9a2fe685b72d2e3f04c0303bdddcbd01607419a7ed3cc70f78c8615aff6f998ea45ab0d297079dcbeb07ebd587816ba9c

Score
7/10

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\keygen-step-6.exe
    "C:\Users\Admin\AppData\Local\Temp\keygen-step-6.exe"
    1⤵
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:768
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c ping 127.0.0.1 && del "C:\Users\Admin\AppData\Local\Temp\keygen-step-6.exe" >> NUL
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1980
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:1352

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Remote System Discovery

1
T1018

Command and Control

Web Service

1
T1102

Replay Monitor

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Downloads

  • memory/768-64-0x0000000075EF1000-0x0000000075EF3000-memory.dmp
    Filesize

    8KB

  • memory/768-60-0x00000000000F0000-0x0000000000108000-memory.dmp
    Filesize

    96KB

  • memory/1352-66-0x0000000000000000-mapping.dmp
  • memory/1980-65-0x0000000000000000-mapping.dmp