Analysis

  • max time kernel
    44s
  • max time network
    75s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    02-08-2024 11:11

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 4 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:4092
    • C:\Users\Admin\AppData\Roaming\Loader.exe
      "C:\Users\Admin\AppData\Roaming\Loader.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2892
      • 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:3596
        • 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:4156
        • 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:196
        • 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:3484
        • 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:2748
        • 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:684
      • 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:704
    • 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:224
      • 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:1820

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

    3KB

    MD5

    ad5cd538ca58cb28ede39c108acb5785

    SHA1

    1ae910026f3dbe90ed025e9e96ead2b5399be877

    SHA256

    c9e6cb04d6c893458d5a7e12eb575cf97c3172f5e312b1f63a667cbbc5f0c033

    SHA512

    c066c5d9b276a68fa636647bb29aea05bfa2292217bc77f5324d9c1d93117772ee8277e1f7cff91ec8d6b7c05ca078f929cecfdbb09582522a9067f54740af13

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

    Filesize

    1KB

    MD5

    44ea609082c00598b851688b716ea7a0

    SHA1

    0bea7ec9c559feafcae3aca82cf46e73c79ecad3

    SHA256

    aa5e58c101be46ff5fed11747bc6698ec5030405eabd7df429acb66cc048f5c5

    SHA512

    b9289c8c87e746da4cf55e5015482e5c620496cf098e678a278982bf003eef931cc7286bbd59b93e50d284cd51a0c897a00c0bf434be0a872b137966041470d1

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

    Filesize

    1KB

    MD5

    9a4be7b8ade560c97b203a8f9c083163

    SHA1

    80a5f4e6bb990ee49c15ca59e7ebc4a0d985cb6f

    SHA256

    a2245e2a440979c7a946be2816a555e1eb11a65fce85d1b6c2a7e5312cad49ff

    SHA512

    83c6b6bc62f5e33d4d9b324602fc2105e92440e8399e8b22ad566345c4453715ff1dd2b1efcc1a334454941bb6eb92e6cdcd28bb3520441c75c07d575d2fc04e

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

    Filesize

    1KB

    MD5

    ccb338f86e4e1f006de170b493ec1fb3

    SHA1

    5fb6a310b4fe3779eb2ea2de5cd59724634349dc

    SHA256

    e4f32c21c5aeff7d0d6c22117f12e6106ca20437be82a184514b2aff37821885

    SHA512

    a712df319179ee98a3bd171d70f61e725613b68058d87d8634f5279ee2ab157af97323b35f2e152d509fa75b031de715f52f8a5ce82e732ce576d4058a3fd44d

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wmzc3bjd.0o5.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\44\Process.txt

    Filesize

    1KB

    MD5

    2d66557d2890742fc37c0142e5472f9c

    SHA1

    059eb150edf412f44a5b96aefda95474077ad755

    SHA256

    26d91465a7f7d59054f36f42c5546dbdf379852e42993e7c1d2d6cd8bc54d0d3

    SHA512

    5588785bb75b2eb0f60a351b0deb4c54eae0bed514e1ebf206ac9610bea1c3cfdd46ed8199061934e6cd1fddefdcb3ff1764c8fb1d7494954c7bdd82222b72ce

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

    Filesize

    532B

    MD5

    8682130a5b9d9b2c45c689302abae9a1

    SHA1

    729c3a656ab8b19bd69cd5bbeea1aaff1fe5ef9d

    SHA256

    43a875512c97cb19c21876e3abfe58b90e5c373e55552852e976d418a9c59e31

    SHA512

    294cac0d87c376c6d7569d11ca2b57d7b44c7da9ec3a02d76f1e76e804e237e982db9bdef0a20f01b74a0ae3063d791508083f9936b812c2961315ff44aa2d2b

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

    Filesize

    547B

    MD5

    16d05470720ab8fc6d6d523ba2280c92

    SHA1

    6a47ea9f4bd832aaa9962aa90330fa42d15fe713

    SHA256

    28c754aff6187ba010a2b33ad4e80652894db9449cb9b3cd34869e427f4ebc6f

    SHA512

    89004b86ba0273fd04880b260eb62d95013398ed1d4a82941d3c91818d59f6828044b8fc79eaf9b2b32281f2992ed649c23b7dee1c2d56de6d0449f686fd7995

  • 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/224-15-0x00007FFA56F60000-0x00007FFA5794C000-memory.dmp

    Filesize

    9.9MB

  • memory/224-323-0x00007FFA56F60000-0x00007FFA5794C000-memory.dmp

    Filesize

    9.9MB

  • memory/224-13-0x0000000000FF0000-0x0000000001032000-memory.dmp

    Filesize

    264KB

  • memory/224-137-0x00007FFA56F60000-0x00007FFA5794C000-memory.dmp

    Filesize

    9.9MB

  • memory/224-324-0x00007FFA56F60000-0x00007FFA5794C000-memory.dmp

    Filesize

    9.9MB

  • memory/704-31-0x0000023CEDC00000-0x0000023CEDC4A000-memory.dmp

    Filesize

    296KB

  • memory/2892-61-0x00007FFA56F60000-0x00007FFA5794C000-memory.dmp

    Filesize

    9.9MB

  • memory/2892-16-0x0000000000560000-0x0000000000CF4000-memory.dmp

    Filesize

    7.6MB

  • memory/2892-14-0x00007FFA56F60000-0x00007FFA5794C000-memory.dmp

    Filesize

    9.9MB

  • memory/3596-34-0x00000000003B0000-0x00000000003C6000-memory.dmp

    Filesize

    88KB

  • memory/3596-325-0x000000001AF20000-0x000000001AF2E000-memory.dmp

    Filesize

    56KB

  • memory/4092-0-0x00007FFA56F63000-0x00007FFA56F64000-memory.dmp

    Filesize

    4KB

  • memory/4092-1-0x0000000000850000-0x0000000001068000-memory.dmp

    Filesize

    8.1MB

  • memory/4156-148-0x000001B241E80000-0x000001B241EF6000-memory.dmp

    Filesize

    472KB

  • memory/4156-144-0x000001B241CD0000-0x000001B241CF2000-memory.dmp

    Filesize

    136KB