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Resubmissions

12/11/2024, 01:29

241112-bwgrxs1gnf 10

08/07/2021, 12:18

210708-8z6d5h8z2n 10

06/07/2021, 17:53

210706-g6we6sa7sa 10

19/06/2021, 18:17

210619-vr8bj2dzfn 10

17/06/2021, 21:39

210617-a9cvlnmrbx 10

11/06/2021, 17:26

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08/06/2021, 06:47

210608-qrbpch3y46 10

08/06/2021, 06:47

210608-64tndgm1ln 10

05/06/2021, 18:40

210605-cd6qpr55sx 10

04/06/2021, 11:56

210604-5c416rs3ns 10

Analysis

  • max time kernel
    1790s
  • max time network
    1833s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    17/05/2021, 12:14

General

  • Target

    keygen-step-4.exe

  • Size

    4.6MB

  • MD5

    563107b1df2a00f4ec868acd9e08a205

  • SHA1

    9cb9c91d66292f5317aa50d92e38834861e9c9b7

  • SHA256

    bf2bd257dde4921ce83c7c1303fafe7f9f81e53c2775d3c373ced482b22eb8a9

  • SHA512

    99a8d247fa435c4cd95be7bc64c7dd6e382371f3a3c160aac3995fd705e4fd3f6622c23784a4ae3457c87536347d15eda3f08aa616450778a99376df540d74d1

Score
10/10

Malware Config

Signatures

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 14 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Drops file in System32 directory 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Modifies registry class 8 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k netsvcs
    1⤵
    • Suspicious use of NtCreateUserProcessOtherParentProcess
    • Drops file in System32 directory
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:860
  • C:\Windows\system32\services.exe
    C:\Windows\system32\services.exe
    1⤵
      PID:468
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k SystemNetworkService
        2⤵
        • Modifies registry class
        PID:1564
    • C:\Users\Admin\AppData\Local\Temp\keygen-step-4.exe
      "C:\Users\Admin\AppData\Local\Temp\keygen-step-4.exe"
      1⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1900
      • C:\Users\Admin\AppData\Local\Temp\RarSFX0\xiuhuali.exe
        "C:\Users\Admin\AppData\Local\Temp\RarSFX0\xiuhuali.exe"
        2⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:464
        • C:\Windows\SysWOW64\rundll32.exe
          "C:\Windows\System32\rundll32.exe" "C:\Program Files\install.dll",install
          3⤵
          • Loads dropped DLL
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1880
      • C:\Users\Admin\AppData\Local\Temp\RarSFX0\JoSetp.exe
        "C:\Users\Admin\AppData\Local\Temp\RarSFX0\JoSetp.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1416
        • C:\Windows\system32\WerFault.exe
          C:\Windows\system32\WerFault.exe -u -p 1416 -s 472
          3⤵
          • Program crash
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          PID:1148

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/860-95-0x0000000000A70000-0x0000000000ABB000-memory.dmp

      Filesize

      300KB

    • memory/860-96-0x0000000001EB0000-0x0000000001F20000-memory.dmp

      Filesize

      448KB

    • memory/1148-100-0x000007FEFC2E1000-0x000007FEFC2E3000-memory.dmp

      Filesize

      8KB

    • memory/1148-101-0x0000000001B40000-0x0000000001B41000-memory.dmp

      Filesize

      4KB

    • memory/1416-89-0x00000000001E0000-0x00000000001E1000-memory.dmp

      Filesize

      4KB

    • memory/1416-93-0x000000001AC90000-0x000000001AC92000-memory.dmp

      Filesize

      8KB

    • memory/1416-88-0x00000000001C0000-0x00000000001DC000-memory.dmp

      Filesize

      112KB

    • memory/1416-87-0x00000000001B0000-0x00000000001B1000-memory.dmp

      Filesize

      4KB

    • memory/1416-85-0x0000000000DF0000-0x0000000000DF1000-memory.dmp

      Filesize

      4KB

    • memory/1564-98-0x0000000000250000-0x00000000002C0000-memory.dmp

      Filesize

      448KB

    • memory/1880-91-0x00000000008A0000-0x00000000009A1000-memory.dmp

      Filesize

      1.0MB

    • memory/1880-90-0x0000000010000000-0x0000000010002000-memory.dmp

      Filesize

      8KB

    • memory/1880-92-0x00000000007A0000-0x00000000007FC000-memory.dmp

      Filesize

      368KB

    • memory/1900-59-0x0000000075B31000-0x0000000075B33000-memory.dmp

      Filesize

      8KB