Analysis

  • max time kernel
    149s
  • max time network
    156s
  • platform
    windows10-1703_x64
  • resource
    win10-20240611-en
  • resource tags

    arch:x64arch:x86image:win10-20240611-enlocale:en-usos:windows10-1703-x64system
  • submitted
    02-08-2024 11:14

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#.

  • 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 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 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:4604
    • C:\Users\Admin\AppData\Roaming\Loader.exe
      "C:\Users\Admin\AppData\Roaming\Loader.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:596
      • 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:2892
        • 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:4296
        • 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:4396
        • 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:4640
        • 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
          PID:5036
        • 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:752
      • 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:4052
    • 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:4372
      • 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:2628
  • C:\Users\Admin\AppData\Roaming\svhost.exe
    C:\Users\Admin\AppData\Roaming\svhost.exe
    1⤵
    • Executes dropped EXE
    PID:4668
  • C:\Users\Admin\AppData\Local\svchost.exe
    C:\Users\Admin\AppData\Local\svchost.exe
    1⤵
    • Executes dropped EXE
    PID:3480
  • C:\Users\Admin\AppData\Roaming\svhost.exe
    C:\Users\Admin\AppData\Roaming\svhost.exe
    1⤵
    • Executes dropped EXE
    PID:2580
  • C:\Users\Admin\AppData\Local\svchost.exe
    C:\Users\Admin\AppData\Local\svchost.exe
    1⤵
    • Executes dropped EXE
    PID:4188

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    937B

    MD5

    40dc80b9b30d2b39502ce4a889c6db37

    SHA1

    4c8e3aee030a8af8d622bd8f44deb07ec5793f21

    SHA256

    2dfa544014f8914104ee3949cc9fd97f0322ae2242b8225b5ae449f66819dd39

    SHA512

    c65c8168f2ce4aa32157a9f9f38686d70affbd84eb261cb83e115294e3018f126fb6718ee46dff5ef54157b54b27db557bf277fe70a4f467fe05e6b6ed66bca9

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

    Filesize

    1KB

    MD5

    4d655e210df9766913d07c5fc88a88fd

    SHA1

    b871e286acb97284cce8e3f6663cd10a1e62f74e

    SHA256

    c92807d6674d3dcbc99139c22132c6eba338c1acaaa5a71f56a5e0751bc1c676

    SHA512

    207cc1d302c525ae7523572408cdd681858d3fd80fea514d0d01827afdff47598d76b62868f20af009ad71b1af89aecc652b2ad1d751968147425067e14d0621

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

    Filesize

    653B

    MD5

    3126dd3c8290a63343855d7d676f4a20

    SHA1

    4b06e716d056361a0a428f58014ad1aaca099efe

    SHA256

    7d01873b5e6be4cfcf6a89ca4d982a62c2e814b61451e5d34172579ebd7be373

    SHA512

    77d57523536a02ce713d15d053932d2830ed5bb6ae4dc4353f7e9d06819b3d5b3af1a959f6aff6a18b8cbc43e1ad510074a0a6b9ce4f9fe79d9f71aaf1800451

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

    Filesize

    638B

    MD5

    85054e575b47da419a40b697c7cdc278

    SHA1

    39bd1f02d6c22993219311acb6fed5fd86d248f7

    SHA256

    00ccd02f0f2e3d2fff25d34cd7a8656442a6b45819ba0f11f345424d3af69118

    SHA512

    39a01c007fb49d1e03eff43364a512e1c38c10740a928d5bb32b9d0299f4fba1c1d2a7cda728f1a88a4b6d3729ff18e711cd805f4e4ff5315b414165a879b0ec

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

    Filesize

    682B

    MD5

    c716a88607dc44ce368bcc1bb680c2a0

    SHA1

    21eff6c7a1206a3ab567a4bae3e49a9e3d3a1d32

    SHA256

    4c8c724e2da7ded3a44d87077bc45ae17ff85101d4cbe57d297dc5ddd6173e6d

    SHA512

    45c14b649606bee2a689910122c694bbef3340f4191231e5476974425b4d2ccc14b1807ded471d7bee3c5bc48c5ca34ef291b7defffa18a24df1373aa06c15f3

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

    Filesize

    3KB

    MD5

    8592ba100a78835a6b94d5949e13dfc1

    SHA1

    63e901200ab9a57c7dd4c078d7f75dcd3b357020

    SHA256

    fdd7d9def6f9f0c0f2e60dbc8a2d1999071cd7d3095e9e087bb1cda7a614ac3c

    SHA512

    87f98e6cb61b2a2a7d65710c4d33881d89715eb7a06e00d492259f35c3902498baabffc5886be0ec5a14312ad4c262e3fc40cd3a5cb91701af0fb229726b88c3

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

    Filesize

    654B

    MD5

    16c5fce5f7230eea11598ec11ed42862

    SHA1

    75392d4824706090f5e8907eee1059349c927600

    SHA256

    87ba77c13905298acbac72be90949c4fe0755b6eff9777615aa37f252515f151

    SHA512

    153edd6da59beea6cc411ed7383c32916425d6ebb65f04c65aab7c1d6b25443d143aa8449aa92149de0ad8a975f6ecaa60f9f7574536eec6b38fe5fd3a6c6adc

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

    Filesize

    1KB

    MD5

    827008fc3b49149ccc4810aa8b0da9e6

    SHA1

    31d80edc5d4326ab7269cd7c0f74bd1214610bbd

    SHA256

    812c177767c772c1f5299d9016f2fba49872e5591d3ebac26e21726bfb36a70e

    SHA512

    1bba7c065dd2873d33556c5439ae9e6cd73a151018c862f8bc90b1abe86a0762ed237def4b8bd406e2d58005dfaf5d45a067a3144cb373ce705bb78b34fa0045

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

    Filesize

    1KB

    MD5

    b53d6f846be8379d9073e90b131262cc

    SHA1

    2b501d0c5fbc216e68488fffefe6a344c46d71fc

    SHA256

    99740d3e9cfe5284d4f0c7a86620f4d53fc1c97e328fbf33edfb4731a37bca97

    SHA512

    7d0d6c8ec70d0e7d78df6dcc47e350880a7ab55322defb2b45d9d13171f0c7ef162555697673043b694f1660086597a23e93265fb46a09452cae7a5a71dc27ee

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

    Filesize

    1KB

    MD5

    24ecaf8649da264e4272ac1bbe689417

    SHA1

    e86511905d7ee22b766f583d85ec7334ce1428fd

    SHA256

    a3b5322adf9b3c8dca365400b2e29e8f011d9a105e6616dacd69392e2f841d44

    SHA512

    cb3244599b6163cf6adad161c9190911201dd7d62663ae9284f5b5618fbff2615627da4d5e5f0b0f66cc61ee1bd639a5ff1d28be72aedb16a0382148b304e407

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_w55xyjke.ay4.ps1

    Filesize

    1B

    MD5

    c4ca4238a0b923820dcc509a6f75849b

    SHA1

    356a192b7913b04c54574d18c28d46e6395428ab

    SHA256

    6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

    SHA512

    4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

  • 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/596-64-0x00007FFCC5640000-0x00007FFCC581B000-memory.dmp

    Filesize

    1.9MB

  • memory/596-17-0x0000000000C10000-0x00000000013A4000-memory.dmp

    Filesize

    7.6MB

  • memory/596-13-0x00007FFCC5640000-0x00007FFCC581B000-memory.dmp

    Filesize

    1.9MB

  • memory/2892-34-0x0000000000630000-0x0000000000646000-memory.dmp

    Filesize

    88KB

  • memory/4052-33-0x000001E31CE40000-0x000001E31CE8A000-memory.dmp

    Filesize

    296KB

  • memory/4296-150-0x00000253304E0000-0x0000025330502000-memory.dmp

    Filesize

    136KB

  • memory/4296-153-0x0000025330690000-0x0000025330706000-memory.dmp

    Filesize

    472KB

  • memory/4372-141-0x00007FFCC5640000-0x00007FFCC581B000-memory.dmp

    Filesize

    1.9MB

  • memory/4372-138-0x00007FFCC5640000-0x00007FFCC581B000-memory.dmp

    Filesize

    1.9MB

  • memory/4372-16-0x0000000000440000-0x0000000000482000-memory.dmp

    Filesize

    264KB

  • memory/4372-14-0x00007FFCC5640000-0x00007FFCC581B000-memory.dmp

    Filesize

    1.9MB

  • memory/4604-0-0x00007FFCC5640000-0x00007FFCC581B000-memory.dmp

    Filesize

    1.9MB

  • memory/4604-15-0x00007FFCC5640000-0x00007FFCC581B000-memory.dmp

    Filesize

    1.9MB

  • memory/4604-1-0x0000000000940000-0x0000000001158000-memory.dmp

    Filesize

    8.1MB