Analysis

  • max time kernel
    150s
  • max time network
    150s
  • 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 11:14

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:4864
    • C:\Users\Admin\AppData\Roaming\Loader.exe
      "C:\Users\Admin\AppData\Roaming\Loader.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:3428
      • 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:4880
        • 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:4188
        • 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:4372
        • 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:2628
        • 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:4260
        • 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:2148
      • 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:4564
    • 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:3272
      • 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:2840
  • C:\Users\Admin\AppData\Local\svchost.exe
    C:\Users\Admin\AppData\Local\svchost.exe
    1⤵
    • Executes dropped EXE
    PID:632
  • C:\Users\Admin\AppData\Roaming\svhost.exe
    C:\Users\Admin\AppData\Roaming\svhost.exe
    1⤵
    • Executes dropped EXE
    PID:1076
  • C:\Users\Admin\AppData\Local\svchost.exe
    C:\Users\Admin\AppData\Local\svchost.exe
    1⤵
    • Executes dropped EXE
    PID:4480
  • C:\Users\Admin\AppData\Roaming\svhost.exe
    C:\Users\Admin\AppData\Roaming\svhost.exe
    1⤵
    • Executes dropped EXE
    PID:2252

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    711B

    MD5

    adce54a69ab83f788cc4ba5011d5d529

    SHA1

    610c3e1d87c6439230ba67ccbced5338ddc353b5

    SHA256

    1610076a3055734f41d5186fc8f68d7221cc8cc12e8de3e31908fc58f63611d2

    SHA512

    24c0da383beb7aa6e7fd9e83e8c8a002ec5755bcba7ed281c4b9acab8996f6e4c8572d8e492239237e6fc8b84ef8e9881d0c8e6bb11ff2f7684e67fd54bff406

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

    Filesize

    1KB

    MD5

    f0b7f1a91820921304b53ce64268e80e

    SHA1

    e929a389ebba1e9fc949091b81945aa90ef10028

    SHA256

    50bd1580431d3767fd93b769a87a687e953454be06000312c53a4f726193fc93

    SHA512

    a69b6dbeef2f5390e3ce23bfd01dfe5ce9827ad61dbdd16f908c0f051f799f223a1573cddce764ca56e8c083de75459c7b3d4e9b58295fb54245b1f2d52af62c

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

    Filesize

    696B

    MD5

    eee4b5a0cc7feba35fe5a31722c3a4c2

    SHA1

    0b89e08569cf964b03b2270e8f586e517fc7456a

    SHA256

    f8298b16ba3ba3ce10247d5da3e739e6d8f87963236a35d2f42caf3556f5f267

    SHA512

    11b4dd9f7d8029ec49d6a70e4aac537053612b4194cf6bd5efb2949e08595faa4d3264dfd7fb635eab3906fa823b7ab63c02cf38ea906e48f32c185b8aacf77d

  • 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\svchost.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

    75fb32838782e16fb5c814c30e277e69

    SHA1

    8512a3c22b51dbb5fc2a77c775e2e2cbbe0df934

    SHA256

    333b5df4e2e5e32327dc82dca1b7e3c54466f7e0240e624c0a6d8375edbc7289

    SHA512

    a2febf8c40ad86df8fe1ea3b99619d765b05b5e59e7619bcd6273ddd405feb06e8e09252e959cd0f713af4ca74cdde850c17c0166b362dc5b4369159c5ee0743

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

    Filesize

    1KB

    MD5

    60d6b831641175ae60a1c016d0ca5963

    SHA1

    856ec3190c65732f34aa6b6cec21af5a88ec03be

    SHA256

    284bd8c2e0a896d2bc9b001b91d7c66fe339ccd33891c879f96411e12fd8411b

    SHA512

    aadb55fa0442f0bb54dfecf485f958950614d2c12947d8f85a32a23325d7458c8b80f9d74a6bf19f060a95852c845b2548047c1495543f2182ee61579997ab25

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

    Filesize

    1KB

    MD5

    9486e5f06cfaadfab59c4b9ea1b4cba4

    SHA1

    be3f01b101c458209c5cb4e9b0e31b0ac68af02e

    SHA256

    bc60c27de499c6e93baba3cd747e8608ef84c7ae7cb455cb565b4f3287b26051

    SHA512

    43e2678d8122107e2c6b47489d58400f1041266681e8b2bc2b5e98cf742a8d6f28225357f79a16c06dc62e6c92cb78645bf81f7dfd54a058ba9c4733fc2fe001

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5gqczj5x.eum.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/3272-17-0x00007FFB1C1D0000-0x00007FFB1CBBC000-memory.dmp

    Filesize

    9.9MB

  • memory/3272-324-0x00007FFB1C1D0000-0x00007FFB1CBBC000-memory.dmp

    Filesize

    9.9MB

  • memory/3272-325-0x00007FFB1C1D0000-0x00007FFB1CBBC000-memory.dmp

    Filesize

    9.9MB

  • memory/3272-14-0x0000000000030000-0x0000000000072000-memory.dmp

    Filesize

    264KB

  • memory/3272-139-0x00007FFB1C1D0000-0x00007FFB1CBBC000-memory.dmp

    Filesize

    9.9MB

  • memory/3428-62-0x00007FFB1C1D0000-0x00007FFB1CBBC000-memory.dmp

    Filesize

    9.9MB

  • memory/3428-16-0x00007FFB1C1D0000-0x00007FFB1CBBC000-memory.dmp

    Filesize

    9.9MB

  • memory/3428-13-0x0000000000FD0000-0x0000000001764000-memory.dmp

    Filesize

    7.6MB

  • memory/4188-149-0x000001E02A650000-0x000001E02A6C6000-memory.dmp

    Filesize

    472KB

  • memory/4188-146-0x000001E02A4A0000-0x000001E02A4C2000-memory.dmp

    Filesize

    136KB

  • memory/4564-31-0x00000221A6000000-0x00000221A604A000-memory.dmp

    Filesize

    296KB

  • memory/4864-0-0x00007FFB1C1D3000-0x00007FFB1C1D4000-memory.dmp

    Filesize

    4KB

  • memory/4864-1-0x0000000000CD0000-0x00000000014E8000-memory.dmp

    Filesize

    8.1MB

  • memory/4880-30-0x0000000000B60000-0x0000000000B76000-memory.dmp

    Filesize

    88KB