Analysis

  • max time kernel
    186s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220721-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-07-2022 16:40

General

  • Target

    55397598501af363b49f8ebb09b5328357ea4bb1522ae5fa26384ddecae58019.exe

  • Size

    741KB

  • MD5

    7563f26bececeda03204733e06cc06c3

  • SHA1

    54e5f16147df489a2f1fd7a02cc496a5c334697c

  • SHA256

    55397598501af363b49f8ebb09b5328357ea4bb1522ae5fa26384ddecae58019

  • SHA512

    bf42b6ce06b5d1ad7ced233e838a264fb1d31914627b294a036d6d9346e76fd48d34dbf03e562c9b951d772e806e94c62dbef4743313fa226eddbc316f8ece7b

Malware Config

Signatures

  • HawkEye

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

  • NirSoft MailPassView 8 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 8 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 13 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • 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
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\55397598501af363b49f8ebb09b5328357ea4bb1522ae5fa26384ddecae58019.exe
    "C:\Users\Admin\AppData\Local\Temp\55397598501af363b49f8ebb09b5328357ea4bb1522ae5fa26384ddecae58019.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:1508
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Update\VDFFSHBXCTFGHDNMBGKZXDDXNVMNCCXBGBNXJNCJM" /XML "C:\Users\Admin\AppData\Local\Temp\z36"
      2⤵
      • Creates scheduled task(s)
      PID:2132
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5032
      • 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"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:4756
      • 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"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:4936
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
        dw20.exe -x -s 984
        3⤵
        • Drops file in Windows directory
        • Suspicious use of AdjustPrivilegeToken
        PID:4300

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scripting

1
T1064

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Scripting

1
T1064

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

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

    3KB

    MD5

    f94dc819ca773f1e3cb27abbc9e7fa27

    SHA1

    9a7700efadc5ea09ab288544ef1e3cd876255086

    SHA256

    a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92

    SHA512

    72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196

  • C:\Users\Admin\AppData\Local\Temp\z36
    Filesize

    1KB

    MD5

    da95da34b3bcde71c5002b9bee5e8251

    SHA1

    5729e1d84f9824b1ff47d57658146bd3cc99084e

    SHA256

    1c04c004f938f91bd6d88c9bf3213fd2e5a8859252a95f63ec8cbda3a5799af1

    SHA512

    d5e07e7770f920f82bee08991de6fa84f54a7884691af3b287ce2da442df7dfac0dea702dec194808f69e0f50eb266b600f92d821883e32423f9abb6a9c2f85c

  • memory/1508-131-0x0000000075570000-0x0000000075B21000-memory.dmp
    Filesize

    5.7MB

  • memory/1508-139-0x0000000075570000-0x0000000075B21000-memory.dmp
    Filesize

    5.7MB

  • memory/1508-130-0x0000000075570000-0x0000000075B21000-memory.dmp
    Filesize

    5.7MB

  • memory/2132-132-0x0000000000000000-mapping.dmp
  • memory/4300-155-0x0000000000000000-mapping.dmp
  • memory/4756-142-0x0000000000000000-mapping.dmp
  • memory/4756-143-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/4756-145-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/4756-146-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/4756-147-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/4936-154-0x0000000000400000-0x0000000000458000-memory.dmp
    Filesize

    352KB

  • memory/4936-149-0x0000000000400000-0x0000000000458000-memory.dmp
    Filesize

    352KB

  • memory/4936-152-0x0000000000400000-0x0000000000458000-memory.dmp
    Filesize

    352KB

  • memory/4936-151-0x0000000000400000-0x0000000000458000-memory.dmp
    Filesize

    352KB

  • memory/4936-148-0x0000000000000000-mapping.dmp
  • memory/5032-135-0x0000000000400000-0x0000000000488000-memory.dmp
    Filesize

    544KB

  • memory/5032-141-0x0000000075570000-0x0000000075B21000-memory.dmp
    Filesize

    5.7MB

  • memory/5032-140-0x0000000075570000-0x0000000075B21000-memory.dmp
    Filesize

    5.7MB

  • memory/5032-136-0x0000000000400000-0x0000000000488000-memory.dmp
    Filesize

    544KB

  • memory/5032-137-0x0000000000400000-0x0000000000488000-memory.dmp
    Filesize

    544KB

  • memory/5032-134-0x0000000000000000-mapping.dmp