Analysis

  • max time kernel
    58s
  • max time network
    71s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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.

  • 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 6 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 12 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:3380
    • 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:3764
      • 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:1748
        • 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:5096
        • 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:3308
        • 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:3108
        • 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:1048
        • 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:4464
      • 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:4716
    • 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:4856
      • 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:5072
  • C:\Users\Admin\AppData\Local\svchost.exe
    C:\Users\Admin\AppData\Local\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4832
  • C:\Users\Admin\AppData\Roaming\svhost.exe
    C:\Users\Admin\AppData\Roaming\svhost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3380

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\44\Process.txt

    Filesize

    166B

    MD5

    1d83f17b44885564b8205dce307687b4

    SHA1

    6e2af751e9e653d17f3aa59e9fee2752a419842b

    SHA256

    dfc852cec1ff82ac47ae03730574ad878b99af06fe11c32778f0ca6b87cf1fdb

    SHA512

    5c2d8ceeea165abddb1909072c8219beff75296da9de355c67361882dfe479da6fca7df955d7e476c425ee05faedf28857bbcbb53167c1173600440c5013c003

  • C:\ProgramData\44\Process.txt

    Filesize

    202B

    MD5

    899e71835581e04e3f6d26eb6f8a2be9

    SHA1

    240351dc2b7469f019c19f0b0db037e3ca2781c9

    SHA256

    a37a18890f0d4ad0a39ed0bb251a9c649cdcbff0b93fa8213b78991760efec2a

    SHA512

    1d4215923e959bc170342c094f0d3f9e3cb020bbae382ca8566cb2db05d25479586aed591bc7b7f2cdd38f5eac78dc73ac51818726f7d8d1e319c08c38efb566

  • C:\ProgramData\44\Process.txt

    Filesize

    741B

    MD5

    3042e2ae10043ebab4d631f92229441c

    SHA1

    9d8fecae5e09a72ff0cc442ba60493daeb78f55f

    SHA256

    19e1a00e1180b74f05471825c5780c07de694221cdec6c36df6b7a414c9515cc

    SHA512

    b13865f4fafab0858f4e2a57ea923c2bc5948ac5708c9c82755470ae3c7e22765a4ec4cdab6078ac58bf0e03535617518bc2707445b4ca0ddebac7841c1acd0c

  • C:\ProgramData\44\Process.txt

    Filesize

    1KB

    MD5

    a663687462229c399c9eaa8e54d62c91

    SHA1

    73d4178beb528461fb8fa0e4116e4f32767157b6

    SHA256

    d45ba55240573d621806f7fa65b705c42797c1197cc4066a2102ef1319250ad5

    SHA512

    46f6dcfa7538bd29a6182a1d46f38139145f38cf99b697009836dd93951ec0982af6136d2d6f13b13d4b503ade7b7e6a5e17a597e944d06f91451545e3280640

  • 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

    944B

    MD5

    77d622bb1a5b250869a3238b9bc1402b

    SHA1

    d47f4003c2554b9dfc4c16f22460b331886b191b

    SHA256

    f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

    SHA512

    d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

    Filesize

    944B

    MD5

    9c740b7699e2363ac4ecdf496520ca35

    SHA1

    aa8691a8c56500d82c5fc8c35209bc6fe50ab1d9

    SHA256

    be96c91b62ba9ba7072ab89e66543328c9e4395150f9dbe8067332d94a3ecc61

    SHA512

    8885683f96353582eb871209e766e7eba1a72a2837ce27ea298b7b5b169621d1fa3fce25346b6bfd258b52642644234da9559d4e765a2023a5a5fc1f544cc7af

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

    Filesize

    944B

    MD5

    34f595487e6bfd1d11c7de88ee50356a

    SHA1

    4caad088c15766cc0fa1f42009260e9a02f953bb

    SHA256

    0f9a4b52e01cb051052228a55d0515911b7ef5a8db3cf925528c746df511424d

    SHA512

    10976c5deaf9fac449e703e852c3b08d099f430de2d7c7b8e2525c35d63e28b890e5aab63feff9b20bca0aaf9f35a3ba411aee3fbeee9ea59f90ed25bd617a0b

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_m2jrjx2o.fvk.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/1748-59-0x00000000000E0000-0x00000000000F6000-memory.dmp

    Filesize

    88KB

  • memory/3380-0-0x00007FF99E433000-0x00007FF99E435000-memory.dmp

    Filesize

    8KB

  • memory/3380-1-0x0000000000160000-0x0000000000978000-memory.dmp

    Filesize

    8.1MB

  • memory/3764-95-0x00007FF99E430000-0x00007FF99EEF1000-memory.dmp

    Filesize

    10.8MB

  • memory/3764-27-0x00007FF99E430000-0x00007FF99EEF1000-memory.dmp

    Filesize

    10.8MB

  • memory/3764-26-0x0000000000340000-0x0000000000AD4000-memory.dmp

    Filesize

    7.6MB

  • memory/4716-58-0x0000026EDB970000-0x0000026EDB9BA000-memory.dmp

    Filesize

    296KB

  • memory/4856-186-0x00007FF99E430000-0x00007FF99EEF1000-memory.dmp

    Filesize

    10.8MB

  • memory/4856-41-0x00007FF99E430000-0x00007FF99EEF1000-memory.dmp

    Filesize

    10.8MB

  • memory/4856-25-0x0000000000360000-0x00000000003A2000-memory.dmp

    Filesize

    264KB

  • memory/4856-243-0x00007FF99E430000-0x00007FF99EEF1000-memory.dmp

    Filesize

    10.8MB

  • memory/4856-244-0x00007FF99E430000-0x00007FF99EEF1000-memory.dmp

    Filesize

    10.8MB

  • memory/4856-251-0x0000000000B60000-0x0000000000B6E000-memory.dmp

    Filesize

    56KB

  • memory/5096-198-0x0000022D5F460000-0x0000022D5F482000-memory.dmp

    Filesize

    136KB