Analysis

  • max time kernel
    79s
  • max time network
    87s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    03-08-2024 19:24

Errors

Reason
Machine shutdown

General

  • Target

    Loader V2.exe

  • Size

    8.1MB

  • MD5

    70a8a700260d1bf5d40214b4d16f2a4d

  • SHA1

    888afda0f542f857c3627845abb17320c79348a3

  • SHA256

    14430e71914c83f8d1de8e66caa39d07ab782efb662245fb9eff6aa9fca7ce87

  • SHA512

    8d139e071d25106a30b3b00350fe08558bdaf884d039492611d90afd30c11ff08643560dc75ffaf7dafc0c53a96cf2b446239faf2fd8df9d0895d25b746d5d83

  • SSDEEP

    196608:X7fP69w9dHnln76gtmUd74JVCbkQqeDDFloLRj/UVn5HIL6qG:Nvnln7RmUuJVuk0DDFWJCnVGs

Malware Config

Extracted

Family

xworm

C2

147.185.221.20:13908

147.185.221.16:60401

Attributes
  • Install_directory

    %AppData%

  • install_file

    svhost.exe

  • telegram

    https://api.telegram.org/bot7220907212:AAEOc5N7cpqGUVVvnWrzGHm8mdOrYN2e9mc/sendMessage?chat_id=6987872630

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/1267250103538810911/_8BMipnmgDV4n-Uu_YmzeHrxrFFQPSAoBBDlwlDVhsDsk_31uQMADxZw-pq563wCO5KV

Signatures

  • 44Caliber

    An open source infostealer written in C#.

  • Contains code to disable Windows Defender 1 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Detect Xworm Payload 4 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • 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 startup file 4 IoCs
  • Executes dropped EXE 8 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Looks up external IP address via web service 3 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).

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 14 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Loader V2.exe
    "C:\Users\Admin\AppData\Local\Temp\Loader V2.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4856
    • C:\Users\Admin\AppData\Roaming\Loader.exe
      "C:\Users\Admin\AppData\Roaming\Loader.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2996
      • C:\Users\Admin\AppData\Local\Temp\loaderr.exe
        "C:\Users\Admin\AppData\Local\Temp\loaderr.exe"
        3⤵
        • Drops startup file
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3556
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\loaderr.exe'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4984
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'loaderr.exe'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3056
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\svchost.exe'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3784
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1904
        • C:\Windows\System32\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Local\svchost.exe"
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:2272
      • C:\Users\Admin\AppData\Local\Temp\fixer.exe
        "C:\Users\Admin\AppData\Local\Temp\fixer.exe"
        3⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2776
    • C:\Users\Admin\AppData\Roaming\injectdll.exe
      "C:\Users\Admin\AppData\Roaming\injectdll.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3868
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svhost" /tr "C:\Users\Admin\AppData\Roaming\svhost.exe"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2884
  • C:\Users\Admin\AppData\Roaming\svhost.exe
    C:\Users\Admin\AppData\Roaming\svhost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2116
  • C:\Users\Admin\AppData\Local\svchost.exe
    C:\Users\Admin\AppData\Local\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2084
  • C:\Users\Admin\AppData\Roaming\svhost.exe
    C:\Users\Admin\AppData\Roaming\svhost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4696
  • C:\Users\Admin\AppData\Local\svchost.exe
    C:\Users\Admin\AppData\Local\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1444

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\44\Process.txt

    Filesize

    461B

    MD5

    e6d3efe5fc60575cf3f3a765aaaaec43

    SHA1

    852cb4c82a9b74056b78af51f49c1d8d7d3b4b80

    SHA256

    889296cc4f2505231246024d15cdf52b74f38a8075ea3803a992a860531cb513

    SHA512

    9931eb13e04214f2a0c010f903a2a82f5cb7fc015146e60211d994d1dbcf8a756c3130bcfd677f12d245422703047203b982c0712c285a3944e69125c6aa32e9

  • C:\Users\Admin\AppData\Local\44\Process.txt

    Filesize

    669B

    MD5

    73082a75b7465379c894d5df1335cd6c

    SHA1

    d99d41c5c36e3780a96bcc6593e74be617d561f1

    SHA256

    505c52999a84299f1b78c376d19579b45d83f77e928efbd183cd39856a2b3775

    SHA512

    71ee3ff1e356f0630a96c3917eb2ff8d5c1a5ace42c6a595c39d835c9b9d713d6ff1c289bd75d1288603bc9ba59be85699208064e738b1aa73b6f3795108c2b4

  • C:\Users\Admin\AppData\Local\44\Process.txt

    Filesize

    1KB

    MD5

    63340f220c63c223382eb30120f21412

    SHA1

    b7577bf43565b998f93a75272267259ad137fa9d

    SHA256

    8c53a6b6fc72e9538b36bcb7409194aaa3a19ecdebf8ebe706e246f0b372f668

    SHA512

    47089b450dbc2ccefddccdbca1fbe6fd5b2154c4979d6977652f9fd4fb6d4c41855c3c54f7cd6dcea34bc5212c56e0493fc3a81ddd5ef62c67c151783789eb87

  • 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\CLR_v4.0\UsageLogs\svhost.exe.log

    Filesize

    654B

    MD5

    2cbbb74b7da1f720b48ed31085cbd5b8

    SHA1

    79caa9a3ea8abe1b9c4326c3633da64a5f724964

    SHA256

    e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

    SHA512

    ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

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

    Filesize

    944B

    MD5

    1a9fa92a4f2e2ec9e244d43a6a4f8fb9

    SHA1

    9910190edfaccece1dfcc1d92e357772f5dae8f7

    SHA256

    0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

    SHA512

    5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

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

    Filesize

    944B

    MD5

    34e3230cb2131270db1af79fb3d57752

    SHA1

    21434dd7cf3c4624226b89f404fd7982825f8ac6

    SHA256

    0f162f27548a84db1638bcf46d03661b5bcb3032e765fafdb597cc107639ba39

    SHA512

    3756cb01e82dbda681b562eae74d0b8ef8b3787b126119a51a92c51a78204a7805b9bdd60c00c50a3be23b843e78bb153b656540767069f739ce421b9bc02335

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

    Filesize

    944B

    MD5

    807e34150dfec5954368008d73b63da4

    SHA1

    4c0be21e0b0c812901464cf5a6948a8c8f534b71

    SHA256

    d58cac2eb66f898fb372dd993c4e7a677eef19e67f2e73e4048cceee2e90fd1c

    SHA512

    a481233a44a75b4122130925ff866feb7ac82719cccbc007e7475b9c32c46058120d9c1a550f53078fa0d5cbb9dcdf4d654c478a3a1b4286ccb73d3de761bf36

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ydxoynyz.yph.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

    Filesize

    274KB

    MD5

    88505913c2c75f796c9a021aab2d356d

    SHA1

    5b5c06998d3e200c21c77ea4efaeaecdc7344e78

    SHA256

    62e414e990e80c8203955b0e32948ddc64903b80a462c339f1babfb03e641204

    SHA512

    6fa46be04c2693ea164fe52ddf3cca0bdafd1ab34d8c0f1c2bf3d361c6042f45375343f59e9474ded6718f8177a4f7eb19fddccd95f7fbb87aad12358b2d6905

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

    Filesize

    65KB

    MD5

    95f8f28f5a8503461db6804cda9c4934

    SHA1

    81c0a30e498093d41948777135bbd407c7611cda

    SHA256

    aa40b9b929868482be1daae474d7c93426cd049f844c956865709ff8b7f240c2

    SHA512

    5c3460372a6640a98dd1b1d34a03b951ec4a8942e9065475e982a207881f290aedc3b51fe73c0da4c527e222addd1de2be7ba541e82287e43e16fc544ab34461

  • C:\Users\Admin\AppData\Roaming\Loader.exe

    Filesize

    7.6MB

    MD5

    aa16f3774491b600121545a5f194cefc

    SHA1

    c872fe765ecff1dada8378ad8a12cd5cf0425219

    SHA256

    c0a2b824a0fd05854818bfb81b02bc6178db3f8519807b15d844580099428e1d

    SHA512

    8b50e7c6eca25ecc2196fbfaf42079873e3c532a90e8d8b691fb594da3e067593f86f0d6488d0c314a27d78519f33fcbfb4532f811997891d55a47d582e1b3a8

  • C:\Users\Admin\AppData\Roaming\injectdll.exe

    Filesize

    244KB

    MD5

    74ffb0d60d647dd6ad8d00c1bee48011

    SHA1

    4c8a707a33b35b78f374c66d59f9c2314c20b25f

    SHA256

    b481f1e0cfe25e5f19da0a0333c78661bf5c75c0b1c616ff4aaaa07aed31efd1

    SHA512

    fc667f4560d6b19a9a4f37eb0e66c751eb348ffc0db69c7d0bd733dfd2df2dfdadc7b780cd93686350444cc14a54283bafe3afec611bcac3ad0239eda659f46c

  • memory/2776-56-0x000001F03E1D0000-0x000001F03E21A000-memory.dmp

    Filesize

    296KB

  • memory/2996-26-0x00007FF81E350000-0x00007FF81EE12000-memory.dmp

    Filesize

    10.8MB

  • memory/2996-98-0x00007FF81E350000-0x00007FF81EE12000-memory.dmp

    Filesize

    10.8MB

  • memory/2996-27-0x0000000000380000-0x0000000000B14000-memory.dmp

    Filesize

    7.6MB

  • memory/3556-59-0x0000000000F00000-0x0000000000F16000-memory.dmp

    Filesize

    88KB

  • memory/3868-29-0x00007FF81E350000-0x00007FF81EE12000-memory.dmp

    Filesize

    10.8MB

  • memory/3868-25-0x0000000000720000-0x0000000000762000-memory.dmp

    Filesize

    264KB

  • memory/3868-238-0x00007FF81E350000-0x00007FF81EE12000-memory.dmp

    Filesize

    10.8MB

  • memory/3868-245-0x000000001B200000-0x000000001B20E000-memory.dmp

    Filesize

    56KB

  • memory/4856-0-0x00007FF81E353000-0x00007FF81E355000-memory.dmp

    Filesize

    8KB

  • memory/4856-1-0x0000000000EA0000-0x00000000016B8000-memory.dmp

    Filesize

    8.1MB

  • memory/4984-183-0x000002E1F6F80000-0x000002E1F6FA2000-memory.dmp

    Filesize

    136KB