Overview

overview

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Static

static

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windows10_x64

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windows7_x64

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windows7_x64

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windows7_x64

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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
    1777s
  • max time network
    1736s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    27-04-2021 11:42

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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 1 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 4 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.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies data under HKEY_USERS 29 IoCs
  • Modifies registry class 10 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 41 IoCs

Processes

  • C:\Windows\system32\services.exe
    C:\Windows\system32\services.exe
    1⤵
      PID:464
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k netsvcs
        2⤵
        • 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:868
      • 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:1880
    • 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:1096
      • 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:1620
        • 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:612
      • 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:892
      • 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:792
        • C:\Users\Admin\AppData\Local\Temp\is-8V8B5.tmp\Install.tmp
          "C:\Users\Admin\AppData\Local\Temp\is-8V8B5.tmp\Install.tmp" /SL5="$3017C,235791,152064,C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe"
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:1600
          • C:\Users\Admin\AppData\Local\Temp\is-HF0TB.tmp\Ultra.exe
            "C:\Users\Admin\AppData\Local\Temp\is-HF0TB.tmp\Ultra.exe" /S /UID=burnerch1
            4⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1052
            • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
              dw20.exe -x -s 888
              5⤵
              • Suspicious behavior: GetForegroundWindowSpam
              PID:2036

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/612-95-0x0000000000880000-0x00000000008DC000-memory.dmp

      Filesize

      368KB

      Download

    • memory/612-93-0x0000000000770000-0x0000000000871000-memory.dmp

      Filesize

      1.0MB

      Download

    • memory/612-92-0x0000000010000000-0x0000000010002000-memory.dmp

      Filesize

      8KB

      Download

    • memory/792-107-0x0000000000400000-0x000000000042B000-memory.dmp

      Filesize

      172KB

      Download

    • memory/868-97-0x0000000001610000-0x0000000001680000-memory.dmp

      Filesize

      448KB

      Download

    • memory/868-96-0x0000000000AE0000-0x0000000000B2B000-memory.dmp

      Filesize

      300KB

      Download

    • memory/892-82-0x0000000000230000-0x0000000000231000-memory.dmp

      Filesize

      4KB

      Download

    • memory/892-83-0x0000000000240000-0x000000000025C000-memory.dmp

      Filesize

      112KB

      Download

    • memory/892-79-0x0000000001020000-0x0000000001021000-memory.dmp

      Filesize

      4KB

      Download

    • memory/892-94-0x000000001ADB0000-0x000000001ADB2000-memory.dmp

      Filesize

      8KB

      Download

    • memory/892-87-0x0000000000260000-0x0000000000261000-memory.dmp

      Filesize

      4KB

      Download

    • memory/1052-124-0x0000000001E20000-0x0000000001E22000-memory.dmp

      Filesize

      8KB

      Download

    • memory/1096-60-0x0000000075201000-0x0000000075203000-memory.dmp

      Filesize

      8KB

      Download

    • memory/1600-116-0x00000000001D0000-0x00000000001D1000-memory.dmp

      Filesize

      4KB

      Download

    • memory/1880-119-0x0000000002C30000-0x0000000002D2F000-memory.dmp

      Filesize

      1020KB

      Download

    • memory/1880-118-0x000007FEFBC41000-0x000007FEFBC43000-memory.dmp

      Filesize

      8KB

      Download

    • memory/1880-99-0x0000000000260000-0x00000000002D0000-memory.dmp

      Filesize

      448KB

      Download

    • memory/2036-127-0x0000000000470000-0x0000000000471000-memory.dmp

      Filesize

      4KB

      Download