Resubmissions

03-12-2024 22:42

241203-2mzjgsxrgt 10

30-11-2024 22:10

241130-13blxsxjby 10

Analysis

  • max time kernel
    24s
  • max time network
    28s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241023-en
  • resource tags

    arch:x64arch:x86image:win11-20241023-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    03-12-2024 22:42

General

  • Target

    osintbeta.exe

  • Size

    631KB

  • MD5

    563db1fc707e29d140d343e75ee9d389

  • SHA1

    ece61378cffc5f950dec95249eeebe9d01f17496

  • SHA256

    bf59201502504351baacaa124496df5d010b90c828c10a3413c9d40409f30ec9

  • SHA512

    e17836e475dd607ea8502012845b7ee13ef12b01ae11745706735a23ef0b9133c8e645d905e2005b2842fea18bd8c39c0b002cda66dfd89be8a658c8aa7dab45

  • SSDEEP

    12288:hoZtL+EP8smVkvFuW5a8VHCCHGmNiMdRC:fI8nVkvFuW5a8VHCCHGIiMdA

Malware Config

Signatures

  • Detect Umbral payload 1 IoCs
  • Umbral

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

  • Umbral family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Drops file in Drivers directory 1 IoCs
  • Reads user/profile data of web browsers 3 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.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Detects videocard installed 1 TTPs 1 IoCs

    Uses WMIC.exe to determine videocard installed.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 32 IoCs
  • Suspicious use of SendNotifyMessage 32 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\osintbeta.exe
    "C:\Users\Admin\AppData\Local\Temp\osintbeta.exe"
    1⤵
    • Drops file in Drivers directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3532
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3500
    • C:\Windows\SYSTEM32\attrib.exe
      "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\osintbeta.exe"
      2⤵
      • Views/modifies file attributes
      PID:4640
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\osintbeta.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3364
    • 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
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2528
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3028
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3004
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" os get Caption
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4192
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" computersystem get totalphysicalmemory
      2⤵
        PID:4304
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        2⤵
          PID:3032
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
          2⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          PID:3668
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic" path win32_VideoController get name
          2⤵
          • Detects videocard installed
          PID:4920
        • C:\Windows\SYSTEM32\cmd.exe
          "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\osintbeta.exe" && pause
          2⤵
          • System Network Configuration Discovery: Internet Connection Discovery
          • Suspicious use of WriteProcessMemory
          PID:3544
          • C:\Windows\system32\PING.EXE
            ping localhost
            3⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:664
      • C:\Windows\system32\taskmgr.exe
        "C:\Windows\system32\taskmgr.exe" /0
        1⤵
        • Checks SCSI registry key(s)
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:3852
      • C:\Windows\System32\rundll32.exe
        C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
        1⤵
          PID:1444

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

          Filesize

          2KB

          MD5

          627073ee3ca9676911bee35548eff2b8

          SHA1

          4c4b68c65e2cab9864b51167d710aa29ebdcff2e

          SHA256

          85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

          SHA512

          3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

          Filesize

          944B

          MD5

          2e8eb51096d6f6781456fef7df731d97

          SHA1

          ec2aaf851a618fb43c3d040a13a71997c25bda43

          SHA256

          96bfd9dd5883329927fe8c08b8956355a1a6ceb30ceeb5d4252b346df32bc864

          SHA512

          0a73dc9a49f92d9dd556c2ca2e36761890b3538f355ee1f013e7cf648d8c4d065f28046cd4a167db3dea304d1fbcbcea68d11ce6e12a3f20f8b6c018a60422d2

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

          Filesize

          948B

          MD5

          fa21dd50b4e64421076f843031c8ccf7

          SHA1

          2c56e94f130c0d8d77116e939ffee4e37cf982bd

          SHA256

          e4f21aca1e12aafa8de7af24b79a75526e902c7d4b3fea5bdb6e723976997be3

          SHA512

          b8de2bfeb7af06c587dd1f424d410cf83471f31a55a3ea4c4481ce07ffd9bf66ddc1f7775ecd6ac65ac33baaec90ba5a208a9aefc84f31125a50dfb919982687

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

          Filesize

          1KB

          MD5

          0ac871344dc49ae49f13f0f88acb4868

          SHA1

          5a073862375c7e79255bb0eab32c635b57a77f98

          SHA256

          688f15b59a784f6f4c62554f00b5d0840d1489cef989c18126c70dfee0806d37

          SHA512

          ace5c50303bd27998607cf34ac4322bcf5edfbd19bbb24309acf4d037b6f3f7636c7c14b6ac0b924114e036252d3a1b998951c7068f41548728fa5d92f5f9006

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

          Filesize

          1KB

          MD5

          9402c815c24778d14ceb8f13bff17188

          SHA1

          73fe123e5546ab00211dd0a0eed5a639c9bf60bf

          SHA256

          e6cbc21e42e21db1d8cf2b9333af227772bd94be3611e5e689a578eb4ad19d46

          SHA512

          a5ce6180e902c2f486c2f1c334ed47bf9f77c569a00279447b20fa5fb6b0f0b4d55dbf82e0e81ac1c8e2d2a9dbedb65dbdfbb4006f500373371f14df37d2ac9c

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vmf10ilt.xjh.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • memory/3364-14-0x000001F642540000-0x000001F642562000-memory.dmp

          Filesize

          136KB

        • memory/3364-3-0x00007FFD53DF0000-0x00007FFD548B2000-memory.dmp

          Filesize

          10.8MB

        • memory/3364-17-0x00007FFD53DF0000-0x00007FFD548B2000-memory.dmp

          Filesize

          10.8MB

        • memory/3364-5-0x00007FFD53DF0000-0x00007FFD548B2000-memory.dmp

          Filesize

          10.8MB

        • memory/3364-4-0x00007FFD53DF0000-0x00007FFD548B2000-memory.dmp

          Filesize

          10.8MB

        • memory/3532-69-0x00000157352A0000-0x00000157352B2000-memory.dmp

          Filesize

          72KB

        • memory/3532-32-0x0000015735160000-0x00000157351B0000-memory.dmp

          Filesize

          320KB

        • memory/3532-33-0x00000157351B0000-0x00000157351CE000-memory.dmp

          Filesize

          120KB

        • memory/3532-31-0x00000157351E0000-0x0000015735256000-memory.dmp

          Filesize

          472KB

        • memory/3532-2-0x00007FFD53DF0000-0x00007FFD548B2000-memory.dmp

          Filesize

          10.8MB

        • memory/3532-68-0x0000015734ED0000-0x0000015734EDA000-memory.dmp

          Filesize

          40KB

        • memory/3532-0-0x00007FFD53DF3000-0x00007FFD53DF5000-memory.dmp

          Filesize

          8KB

        • memory/3532-1-0x000001571A960000-0x000001571AA04000-memory.dmp

          Filesize

          656KB

        • memory/3532-88-0x00007FFD53DF0000-0x00007FFD548B2000-memory.dmp

          Filesize

          10.8MB

        • memory/3852-89-0x000001FCEB390000-0x000001FCEB391000-memory.dmp

          Filesize

          4KB

        • memory/3852-90-0x000001FCEB390000-0x000001FCEB391000-memory.dmp

          Filesize

          4KB

        • memory/3852-91-0x000001FCEB390000-0x000001FCEB391000-memory.dmp

          Filesize

          4KB

        • memory/3852-101-0x000001FCEB390000-0x000001FCEB391000-memory.dmp

          Filesize

          4KB

        • memory/3852-100-0x000001FCEB390000-0x000001FCEB391000-memory.dmp

          Filesize

          4KB

        • memory/3852-99-0x000001FCEB390000-0x000001FCEB391000-memory.dmp

          Filesize

          4KB

        • memory/3852-98-0x000001FCEB390000-0x000001FCEB391000-memory.dmp

          Filesize

          4KB

        • memory/3852-97-0x000001FCEB390000-0x000001FCEB391000-memory.dmp

          Filesize

          4KB

        • memory/3852-96-0x000001FCEB390000-0x000001FCEB391000-memory.dmp

          Filesize

          4KB

        • memory/3852-95-0x000001FCEB390000-0x000001FCEB391000-memory.dmp

          Filesize

          4KB