Analysis

  • max time kernel
    115s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240730-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-08-2024 11:10

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.

  • Checks computer location settings 2 TTPs 4 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4412
    • C:\Users\Admin\AppData\Roaming\Loader.exe
      "C:\Users\Admin\AppData\Roaming\Loader.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:4296
      • C:\Users\Admin\AppData\Local\Temp\loaderr.exe
        "C:\Users\Admin\AppData\Local\Temp\loaderr.exe"
        3⤵
        • Checks computer location settings
        • 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:3528
        • 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:912
        • 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:5076
        • 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:2008
        • 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:864
        • 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:1688
      • 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:5012
    • C:\Users\Admin\AppData\Roaming\injectdll.exe
      "C:\Users\Admin\AppData\Roaming\injectdll.exe"
      2⤵
      • Checks computer location settings
      • 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:2472
      • 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:1156
  • C:\Users\Admin\AppData\Roaming\svhost.exe
    C:\Users\Admin\AppData\Roaming\svhost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1420
  • C:\Users\Admin\AppData\Local\svchost.exe
    C:\Users\Admin\AppData\Local\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4688
  • C:\Users\Admin\AppData\Roaming\svhost.exe
    C:\Users\Admin\AppData\Roaming\svhost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3600
  • C:\Users\Admin\AppData\Local\svchost.exe
    C:\Users\Admin\AppData\Local\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4256

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    654B

    MD5

    2ff39f6c7249774be85fd60a8f9a245e

    SHA1

    684ff36b31aedc1e587c8496c02722c6698c1c4e

    SHA256

    e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

    SHA512

    1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

    Filesize

    944B

    MD5

    bd5940f08d0be56e65e5f2aaf47c538e

    SHA1

    d7e31b87866e5e383ab5499da64aba50f03e8443

    SHA256

    2d2f364c75bd2897504249f42cdf1d19374f5230aad68fa9154ea3d03e3031a6

    SHA512

    c34d10c7e07da44a180fae9889b61f08903aa84e8ddfa80c31c272b1ef9d491b8cec6b8a4c836c3cb1583fe8f4955c6a8db872515de3a9e10eae09610c959406

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

    Filesize

    944B

    MD5

    d8cb3e9459807e35f02130fad3f9860d

    SHA1

    5af7f32cb8a30e850892b15e9164030a041f4bd6

    SHA256

    2b139c74072ccbdaa17b950f32a6dbc934dfb7af9973d97c9b0d9c498012ba68

    SHA512

    045239ba31367fbdd59e883f74eafc05724e23bd6e8f0c1e7171ea2496a497eb9e0cfcb57285bb81c4d569daadba43d6ef64c626ca48f1e2a59e8d97f0cc9184

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

    Filesize

    944B

    MD5

    aeceee3981c528bdc5e1c635b65d223d

    SHA1

    de9939ed37edca6772f5cdd29f6a973b36b7d31b

    SHA256

    b99f3c778a047e0348c92c16e0419fa29418d10d0fec61ad8283e92a094a2b32

    SHA512

    df48285f38e9284efdbd9f8d99e2e94a46fb5465953421ab88497b73ae06895b98ea5c98796560810a6f342c31a9112ea87e03cd3e267fd8518d7585f492a8fb

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

    Filesize

    748B

    MD5

    3c7355da512685447470b6e2105aaef6

    SHA1

    f8f09a37878042815fe33c4c81dffabb38514e99

    SHA256

    6a0f192ddadee57aa7d7dafb5af543b4ac8d7a55f82297701c5f013163c61cff

    SHA512

    c425bde8e1a27bc3e89f865ce3ed421c1d51211ea9e6660d639ba00329e896947696c18295aeb6888b02a9fb20767d06e06491168341607ed437891ec73bcd20

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

    Filesize

    1KB

    MD5

    3977437b40366020a73751c7bbe15074

    SHA1

    cdeafa99209264e703351b0b57bc47255d4e1d29

    SHA256

    e2fa7d6c80f179b7bd6c05c34f441594509ceb32fe847f62e3e76c6f93a0afaf

    SHA512

    801c9b365e1f288c5b9f4fc1f9892244d3aff9e33933bc763e52e144b5400e21f101e4778418e5f1f7f8fecf252c4b121d6d4e5b62dff321c5a383452abedf22

  • 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/912-189-0x00000266E3110000-0x00000266E3132000-memory.dmp

    Filesize

    136KB

  • memory/2472-249-0x00007FF835240000-0x00007FF835D01000-memory.dmp

    Filesize

    10.8MB

  • memory/2472-188-0x00007FF835240000-0x00007FF835D01000-memory.dmp

    Filesize

    10.8MB

  • memory/2472-29-0x00007FF835240000-0x00007FF835D01000-memory.dmp

    Filesize

    10.8MB

  • memory/2472-250-0x00007FF835240000-0x00007FF835D01000-memory.dmp

    Filesize

    10.8MB

  • memory/2472-25-0x0000000000A00000-0x0000000000A42000-memory.dmp

    Filesize

    264KB

  • memory/3528-59-0x0000000000920000-0x0000000000936000-memory.dmp

    Filesize

    88KB

  • memory/3528-257-0x00000000010F0000-0x00000000010FE000-memory.dmp

    Filesize

    56KB

  • memory/4296-28-0x00007FF835240000-0x00007FF835D01000-memory.dmp

    Filesize

    10.8MB

  • memory/4296-97-0x00007FF835240000-0x00007FF835D01000-memory.dmp

    Filesize

    10.8MB

  • memory/4296-26-0x0000000000BC0000-0x0000000001354000-memory.dmp

    Filesize

    7.6MB

  • memory/4412-0-0x00007FF835243000-0x00007FF835245000-memory.dmp

    Filesize

    8KB

  • memory/4412-1-0x0000000000E90000-0x00000000016A8000-memory.dmp

    Filesize

    8.1MB

  • memory/5012-53-0x000001E7D0B00000-0x000001E7D0B4A000-memory.dmp

    Filesize

    296KB