Overview

overview

10

Static

static

ﱞﱞﱞ�...ﱞﱞ

windows10_x64

10

ﱞﱞﱞ�...ฺฺ

windows10_x64

10

ﱞﱞﱞ�...ﱞﱞ

windows10_x64

10

ﱞﱞﱞ�...ﱞﱞ

windows10_x64

ﱞﱞﱞ�...ﱞﱞ

windows7_x64

10

win102

windows10_x64

8

win104

windows10_x64

win105

windows10_x64

win106

windows10_x64

win103

windows10_x64

10

win101

windows10_x64

win100

windows10_x64

Resubmissions

24-04-2021 20:28

210424-hdvwe2nvza 10

24-04-2021 19:13

210424-ybjq8yj7ej 10

24-04-2021 19:13

210424-lbec8bsxas 10

24-04-2021 19:13

210424-p1q7nfdl5n 10

24-04-2021 19:13

210424-zsvmftzny6 10

24-04-2021 15:54

210424-bvebvx5d4j 10

24-04-2021 08:51

210424-fycslxztl2 10

24-04-2021 06:48

210424-dpw71r8bwa 10

Analysis

  • max time kernel
    1800s
  • max time network
    1580s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    24-04-2021 19:13

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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 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Windows\system32\services.exe
    C:\Windows\system32\services.exe
    1⤵
      PID:460
      • 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:872
        • C:\Windows\system32\wbem\WMIADAP.EXE
          wmiadap.exe /F /T /R
          3⤵
            PID:1280
        • 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:672
      • 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:1072
        • 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:1392
          • 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:1760
        • 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:1708
        • 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:240
          • C:\Users\Admin\AppData\Local\Temp\is-R5I2P.tmp\Install.tmp
            "C:\Users\Admin\AppData\Local\Temp\is-R5I2P.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:1988
            • C:\Users\Admin\AppData\Local\Temp\is-HVMOI.tmp\Ultra.exe
              "C:\Users\Admin\AppData\Local\Temp\is-HVMOI.tmp\Ultra.exe" /S /UID=burnerch1
              4⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:1424
              • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
                dw20.exe -x -s 888
                5⤵
                • Suspicious behavior: GetForegroundWindowSpam
                PID:1624

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • memory/240-106-0x0000000000400000-0x000000000042B000-memory.dmp

        Filesize

        172KB

        Download

      • memory/672-98-0x0000000000470000-0x00000000004E0000-memory.dmp

        Filesize

        448KB

        Download

      • memory/672-122-0x0000000002770000-0x000000000286F000-memory.dmp

        Filesize

        1020KB

        Download

      • memory/872-96-0x0000000001820000-0x0000000001890000-memory.dmp

        Filesize

        448KB

        Download

      • memory/872-95-0x0000000000A20000-0x0000000000A6B000-memory.dmp

        Filesize

        300KB

        Download

      • memory/1072-59-0x0000000075411000-0x0000000075413000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1424-121-0x0000000000AA0000-0x0000000000AA2000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1624-125-0x0000000001E10000-0x0000000001E11000-memory.dmp

        Filesize

        4KB

        Download

      • memory/1624-124-0x000007FEFBAB1000-0x000007FEFBAB3000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1708-92-0x00000000003F0000-0x00000000003F1000-memory.dmp

        Filesize

        4KB

        Download

      • memory/1708-79-0x00000000011D0000-0x00000000011D1000-memory.dmp

        Filesize

        4KB

        Download

      • memory/1708-87-0x0000000000140000-0x0000000000141000-memory.dmp

        Filesize

        4KB

        Download

      • memory/1708-88-0x0000000000150000-0x000000000016C000-memory.dmp

        Filesize

        112KB

        Download

      • memory/1708-94-0x000000001AC80000-0x000000001AC82000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1760-91-0x00000000006A0000-0x00000000006FC000-memory.dmp

        Filesize

        368KB

        Download

      • memory/1760-89-0x0000000010000000-0x0000000010002000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1760-90-0x00000000007C0000-0x00000000008C1000-memory.dmp

        Filesize

        1.0MB

        Download

      • memory/1988-116-0x0000000000240000-0x0000000000241000-memory.dmp

        Filesize

        4KB

        Download