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Overview

overview

10

Static

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win102

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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

210611-wvab1yw2tj 10

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
    1791s
  • max time network
    1577s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    16/05/2021, 11:05

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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 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 23 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.

  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 2 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.

  • Checks processor information in registry 2 TTPs 4 IoCs

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

  • Modifies data under HKEY_USERS 29 IoCs
  • Modifies registry class 14 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 45 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:864
  • C:\Windows\system32\services.exe
    C:\Windows\system32\services.exe
    1⤵
      PID:464
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k SystemNetworkService
        2⤵
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        • Modifies registry class
        PID:300
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k SystemNetworkService
        2⤵
        • Drops file in System32 directory
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        • Modifies registry class
        PID:1740
    • 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:1088
      • 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:1228
        • 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:1788
      • 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
        PID:1828
      • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe
        "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1836
        • C:\Users\Admin\AppData\Local\Temp\is-9MJ4R.tmp\Install.tmp
          "C:\Users\Admin\AppData\Local\Temp\is-9MJ4R.tmp\Install.tmp" /SL5="$30182,235791,152064,C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe"
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:1612
          • C:\Users\Admin\AppData\Local\Temp\is-I23F0.tmp\Ultra.exe
            "C:\Users\Admin\AppData\Local\Temp\is-I23F0.tmp\Ultra.exe" /S /UID=burnerch1
            4⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1632
            • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
              dw20.exe -x -s 888
              5⤵
              • Suspicious behavior: GetForegroundWindowSpam
              PID:1736

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/300-99-0x0000000000490000-0x0000000000500000-memory.dmp

      Filesize

      448KB

      Download

    • memory/864-96-0x00000000007A0000-0x00000000007EB000-memory.dmp

      Filesize

      300KB

      Download

    • memory/864-97-0x0000000001810000-0x0000000001880000-memory.dmp

      Filesize

      448KB

      Download

    • memory/1088-60-0x00000000753B1000-0x00000000753B3000-memory.dmp

      Filesize

      8KB

      Download

    • memory/1612-117-0x0000000000240000-0x0000000000241000-memory.dmp

      Filesize

      4KB

      Download

    • memory/1632-123-0x0000000000A50000-0x0000000000A52000-memory.dmp

      Filesize

      8KB

      Download

    • memory/1736-129-0x00000000004D0000-0x00000000004D1000-memory.dmp

      Filesize

      4KB

      Download

    • memory/1736-128-0x000007FEFBBF1000-0x000007FEFBBF3000-memory.dmp

      Filesize

      8KB

      Download

    • memory/1740-125-0x0000000000320000-0x0000000000390000-memory.dmp

      Filesize

      448KB

      Download

    • memory/1740-124-0x00000000000E0000-0x000000000012B000-memory.dmp

      Filesize

      300KB

      Download

    • memory/1740-126-0x0000000002A20000-0x0000000002B25000-memory.dmp

      Filesize

      1.0MB

      Download

    • memory/1788-93-0x0000000000A80000-0x0000000000ADC000-memory.dmp

      Filesize

      368KB

      Download

    • memory/1788-92-0x00000000007C0000-0x00000000008C1000-memory.dmp

      Filesize

      1.0MB

      Download

    • memory/1788-91-0x0000000010000000-0x0000000010002000-memory.dmp

      Filesize

      8KB

      Download

    • memory/1828-90-0x0000000000260000-0x0000000000261000-memory.dmp

      Filesize

      4KB

      Download

    • memory/1828-86-0x0000000000950000-0x0000000000951000-memory.dmp

      Filesize

      4KB

      Download

    • memory/1828-88-0x0000000000230000-0x0000000000231000-memory.dmp

      Filesize

      4KB

      Download

    • memory/1828-89-0x0000000000240000-0x000000000025C000-memory.dmp

      Filesize

      112KB

      Download

    • memory/1828-94-0x000000001AFE0000-0x000000001AFE2000-memory.dmp

      Filesize

      8KB

      Download

    • memory/1836-107-0x0000000000400000-0x000000000042B000-memory.dmp

      Filesize

      172KB

      Download