Analysis

  • max time kernel
    141s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-02-2024 13:38

General

  • Target

    injector.exe

  • Size

    231KB

  • MD5

    0a40e097ff34f2786e6a1b1c2695db2d

  • SHA1

    7701f374e627f5624ee7b792c777d2b59b41ac20

  • SHA256

    a9e16fdb1ad53a73784a03803410b238e2de590eb1f7a1d6e4dfa0354ef99ca0

  • SHA512

    3ed97fbbd49460b582c51059b7e96535a951820179e89492f16668d176c8bb33ebaf8f4e056e5e909fcda74167dfa71cd8f83db840b10fb084019ae675982c47

  • SSDEEP

    6144:xloZMArIkd8g+EtXHkv/iD44gTVBPUonRWvRsY94Fb8e1mFrQi:DoZHL+EP84gTVBPUonRWvRsY9sOJ

Score
10/10

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1212013600261279754/pS2kUk8X8HLTwlZ_TrdPXO-susrMQC81SOpxO7zVm1bHHQsqYw40zPb6UlXkaCeSSy_l

Signatures

  • Detect Umbral payload 2 IoCs
  • Umbral

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

  • Drops file in Drivers directory 1 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.

  • Checks SCSI registry key(s) 3 TTPs 6 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.

  • Modifies registry class 7 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 64 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\injector.exe
    "C:\Users\Admin\AppData\Local\Temp\injector.exe"
    1⤵
    • Drops file in Drivers directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2744
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\injector.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1792
    • 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⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3996
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:956
    • 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:4040
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" os get Caption
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3800
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" computersystem get totalphysicalmemory
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4736
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
        PID:1864
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:4320
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic" path win32_VideoController get name
        2⤵
        • Detects videocard installed
        PID:4120
    • C:\Windows\system32\taskmgr.exe
      "C:\Windows\system32\taskmgr.exe" /4
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:4788
      • C:\Windows\system32\taskmgr.exe
        "C:\Windows\system32\taskmgr.exe" /1
        2⤵
        • Checks SCSI registry key(s)
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2580
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:4588
      • C:\Windows\system32\OpenWith.exe
        C:\Windows\system32\OpenWith.exe -Embedding
        1⤵
        • Modifies registry class
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2792
        • C:\Windows\system32\NOTEPAD.EXE
          "C:\Windows\system32\NOTEPAD.EXE" C:\Windows\Temp\amc5E2D.tmp
          2⤵
          • Opens file in notepad (likely ransom note)
          PID:2172
      • C:\Windows\system32\OpenWith.exe
        C:\Windows\system32\OpenWith.exe -Embedding
        1⤵
        • Modifies registry class
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        PID:3672

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\OBoB4.scr

        Filesize

        231KB

        MD5

        0a40e097ff34f2786e6a1b1c2695db2d

        SHA1

        7701f374e627f5624ee7b792c777d2b59b41ac20

        SHA256

        a9e16fdb1ad53a73784a03803410b238e2de590eb1f7a1d6e4dfa0354ef99ca0

        SHA512

        3ed97fbbd49460b582c51059b7e96535a951820179e89492f16668d176c8bb33ebaf8f4e056e5e909fcda74167dfa71cd8f83db840b10fb084019ae675982c47

      • C:\Users\Admin\AppData\Local\D3DSCache\e8010882af4f153f\F4EB2D6C-ED2B-4BDD-AD9D-F913287E6768.idx

        Filesize

        64KB

        MD5

        d2fb266b97caff2086bf0fa74eddb6b2

        SHA1

        2f0061ce9c51b5b4fbab76b37fc6a540be7f805d

        SHA256

        b09f68b61d9ff5a7c7c8b10eee9447d4813ee0e866346e629e788cd4adecb66a

        SHA512

        c3ba95a538c1d266beb83334af755c34ce642a4178ab0f2e5f7822fd6821d3b68862a8b58f167a9294e6d913b08c1054a69b5d7aec2efdb3cf9796ed84de21a8

      • C:\Users\Admin\AppData\Local\D3DSCache\e8010882af4f153f\F4EB2D6C-ED2B-4BDD-AD9D-F913287E6768.lock

        Filesize

        4B

        MD5

        f49655f856acb8884cc0ace29216f511

        SHA1

        cb0f1f87ec0455ec349aaa950c600475ac7b7b6b

        SHA256

        7852fce59c67ddf1d6b8b997eaa1adfac004a9f3a91c37295de9223674011fba

        SHA512

        599e93d25b174524495ed29653052b3590133096404873318f05fd68f4c9a5c9a3b30574551141fbb73d7329d6be342699a17f3ae84554bab784776dfda2d5f8

      • C:\Users\Admin\AppData\Local\D3DSCache\e8010882af4f153f\F4EB2D6C-ED2B-4BDD-AD9D-F913287E6768.val

        Filesize

        944B

        MD5

        6bd369f7c74a28194c991ed1404da30f

        SHA1

        0f8e3f8ab822c9374409fe399b6bfe5d68cbd643

        SHA256

        878947d0ec814fe7c343cdebc05eebf00eb14f3023bdb3809a559e17f399fe5d

        SHA512

        8fc5f073dc9fa1e1ae47c60a5f06e0a48709fd6a4302dffaa721858409e7bde64bc6856d3fb28891090516d1a7afc542579de287778b5755eafe75cc67d45d93

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

        Filesize

        2KB

        MD5

        d85ba6ff808d9e5444a4b369f5bc2730

        SHA1

        31aa9d96590fff6981b315e0b391b575e4c0804a

        SHA256

        84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

        SHA512

        8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

        Filesize

        1KB

        MD5

        e19f6697306fef6a6b725882dd80be45

        SHA1

        28dab6afcb92974aa347b338174a685b91f6ff74

        SHA256

        512378c0b757fc438cd5834743c2eb17ca029ef71834aa7d9ad1f2c6666309f7

        SHA512

        7b19bbf47f233687c1d56a2c7a90379ab5d405c8b38ee14968fccf0fe03b0e573d5b633e3dc79bb993492ca13a7b01c4b34066da0e72bcbc32f413631f77cb1d

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

        Filesize

        944B

        MD5

        cadef9abd087803c630df65264a6c81c

        SHA1

        babbf3636c347c8727c35f3eef2ee643dbcc4bd2

        SHA256

        cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438

        SHA512

        7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085

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

        Filesize

        948B

        MD5

        47aec0ae6e0dfab5f91c35cd65d2c56a

        SHA1

        0bbe13618bdc0c402539cdfca81471aa501f5cad

        SHA256

        8f31385012b247db2cc50ecb164208fbbf5f8cdf7bfc951e8c2c8ad5fb04cf0b

        SHA512

        c4b7184a85c1d594012ba86390e651439d6cae63c76b94432faaaea410e4ef9bc62d88e68adf8f3abbe36e18ef9e4dc46c3e31a0d72089f98a22f04c8b4a8f12

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

        Filesize

        1KB

        MD5

        d3235ed022a42ec4338123ab87144afa

        SHA1

        5058608bc0deb720a585a2304a8f7cf63a50a315

        SHA256

        10663f5a1cb0afe5578f61ebaae2aafb363544e47b48521f9c23be9e6e431b27

        SHA512

        236761b7c68feca8bd62cba90cff0b25fac5613837aaa5d29ae823ace8b06a2057553cf7e72b11ccc59b6c289e471ca1bbac1a880aef5e2868875371a17c1abf

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ogua2g2j.03p.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • memory/956-66-0x000002EA7AEA0000-0x000002EA7AEB0000-memory.dmp

        Filesize

        64KB

      • memory/956-68-0x00007FFBBC110000-0x00007FFBBCBD1000-memory.dmp

        Filesize

        10.8MB

      • memory/956-42-0x000002EA7AEA0000-0x000002EA7AEB0000-memory.dmp

        Filesize

        64KB

      • memory/956-41-0x00007FFBBC110000-0x00007FFBBCBD1000-memory.dmp

        Filesize

        10.8MB

      • memory/1792-16-0x00000209A2D00000-0x00000209A2D10000-memory.dmp

        Filesize

        64KB

      • memory/1792-19-0x00007FFBBC110000-0x00007FFBBCBD1000-memory.dmp

        Filesize

        10.8MB

      • memory/1792-12-0x00000209A36F0000-0x00000209A3712000-memory.dmp

        Filesize

        136KB

      • memory/1792-13-0x00007FFBBC110000-0x00007FFBBCBD1000-memory.dmp

        Filesize

        10.8MB

      • memory/1792-14-0x00000209A2D00000-0x00000209A2D10000-memory.dmp

        Filesize

        64KB

      • memory/1792-15-0x00000209A2D00000-0x00000209A2D10000-memory.dmp

        Filesize

        64KB

      • memory/2744-2-0x00000216A4CE0000-0x00000216A4CF0000-memory.dmp

        Filesize

        64KB

      • memory/2744-86-0x000002168C3D0000-0x000002168C3DA000-memory.dmp

        Filesize

        40KB

      • memory/2744-109-0x00007FFBBC110000-0x00007FFBBCBD1000-memory.dmp

        Filesize

        10.8MB

      • memory/2744-1-0x00007FFBBC110000-0x00007FFBBCBD1000-memory.dmp

        Filesize

        10.8MB

      • memory/2744-43-0x00007FFBBC110000-0x00007FFBBCBD1000-memory.dmp

        Filesize

        10.8MB

      • memory/2744-69-0x00000216A4CE0000-0x00000216A4CF0000-memory.dmp

        Filesize

        64KB

      • memory/2744-0-0x000002168A4C0000-0x000002168A500000-memory.dmp

        Filesize

        256KB

      • memory/2744-40-0x000002168C390000-0x000002168C3AE000-memory.dmp

        Filesize

        120KB

      • memory/2744-39-0x00000216A4C70000-0x00000216A4CC0000-memory.dmp

        Filesize

        320KB

      • memory/2744-38-0x00000216A4BF0000-0x00000216A4C66000-memory.dmp

        Filesize

        472KB

      • memory/2744-87-0x000002168C400000-0x000002168C412000-memory.dmp

        Filesize

        72KB

      • memory/3996-33-0x000002BAF07A0000-0x000002BAF07B0000-memory.dmp

        Filesize

        64KB

      • memory/3996-35-0x00007FFBBC110000-0x00007FFBBCBD1000-memory.dmp

        Filesize

        10.8MB

      • memory/3996-22-0x000002BAF07A0000-0x000002BAF07B0000-memory.dmp

        Filesize

        64KB

      • memory/3996-21-0x00007FFBBC110000-0x00007FFBBCBD1000-memory.dmp

        Filesize

        10.8MB

      • memory/4040-70-0x00007FFBBC110000-0x00007FFBBCBD1000-memory.dmp

        Filesize

        10.8MB

      • memory/4040-80-0x00000164F1070000-0x00000164F1080000-memory.dmp

        Filesize

        64KB

      • memory/4040-81-0x00000164F1070000-0x00000164F1080000-memory.dmp

        Filesize

        64KB

      • memory/4040-84-0x00007FFBBC110000-0x00007FFBBCBD1000-memory.dmp

        Filesize

        10.8MB

      • memory/4320-102-0x000001DA5CDA0000-0x000001DA5CDB0000-memory.dmp

        Filesize

        64KB

      • memory/4320-104-0x00007FFBBC110000-0x00007FFBBCBD1000-memory.dmp

        Filesize

        10.8MB

      • memory/4320-100-0x000001DA5CDA0000-0x000001DA5CDB0000-memory.dmp

        Filesize

        64KB

      • memory/4320-99-0x00007FFBBC110000-0x00007FFBBCBD1000-memory.dmp

        Filesize

        10.8MB

      • memory/4788-119-0x000001FDE46D0000-0x000001FDE46D1000-memory.dmp

        Filesize

        4KB

      • memory/4788-116-0x000001FDE46D0000-0x000001FDE46D1000-memory.dmp

        Filesize

        4KB

      • memory/4788-118-0x000001FDE46D0000-0x000001FDE46D1000-memory.dmp

        Filesize

        4KB

      • memory/4788-120-0x000001FDE46D0000-0x000001FDE46D1000-memory.dmp

        Filesize

        4KB

      • memory/4788-121-0x000001FDE46D0000-0x000001FDE46D1000-memory.dmp

        Filesize

        4KB

      • memory/4788-122-0x000001FDE46D0000-0x000001FDE46D1000-memory.dmp

        Filesize

        4KB

      • memory/4788-117-0x000001FDE46D0000-0x000001FDE46D1000-memory.dmp

        Filesize

        4KB

      • memory/4788-112-0x000001FDE46D0000-0x000001FDE46D1000-memory.dmp

        Filesize

        4KB

      • memory/4788-111-0x000001FDE46D0000-0x000001FDE46D1000-memory.dmp

        Filesize

        4KB

      • memory/4788-110-0x000001FDE46D0000-0x000001FDE46D1000-memory.dmp

        Filesize

        4KB