Analysis

  • max time kernel
    148s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-11-2022 18:12

General

  • Target

    5a81bfc77d9724703ba17bfbb543b8d0e05ee11b1f8a0159dc1bfe6b55278cd7.exe

  • Size

    1.7MB

  • MD5

    052a940aae3e54fc50f6a407e68f6e29

  • SHA1

    a6be32c5d51476cc4d81d91959572c442209164a

  • SHA256

    5a81bfc77d9724703ba17bfbb543b8d0e05ee11b1f8a0159dc1bfe6b55278cd7

  • SHA512

    a5ad7a0336f2285018f844e4c5df30e9b19f2d7f7ff814a3ff1f69903c271fab60a3044efff5226265bd620491ba8abf7198a7c81019412bcc95cb4b027cbe63

  • SSDEEP

    24576:nWo63tNOdcwUAJONc30Zf/jSJGtvb6YtT7CU30wfTLlS4P1THSRzXJYHf7XBe7aE:3cWb3fAb6aT73jbuJY/7XdSR

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.messagingengine.com
  • Port:
    587
  • Username:
    azarbaijJ@fastmail.com
  • Password:
    qedrks8q9hlo8up1ao7hrljvc7

Signatures

  • HawkEye

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • NirSoft MailPassView 5 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 6 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 10 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 2 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
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops desktop.ini file(s) 2 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 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5a81bfc77d9724703ba17bfbb543b8d0e05ee11b1f8a0159dc1bfe6b55278cd7.exe
    "C:\Users\Admin\AppData\Local\Temp\5a81bfc77d9724703ba17bfbb543b8d0e05ee11b1f8a0159dc1bfe6b55278cd7.exe"
    1⤵
    • Checks computer location settings
    • Drops desktop.ini file(s)
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2492
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\FolderName\mata.bat
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1408
      • C:\Windows\SysWOW64\wscript.exe
        wscript.exe "C:\Users\Admin\AppData\Roaming\FolderName\invs.vbs" "C:\Users\Admin\AppData\Roaming\FolderName\mata2.bat"
        3⤵
        • Checks computer location settings
        • Suspicious use of WriteProcessMemory
        PID:2116
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\FolderName\mata2.bat" "
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:3784
          • C:\Windows\SysWOW64\reg.exe
            reg add "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /v Shell /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\FolderName\conhost.exe" /f
            5⤵
            • Modifies WinLogon for persistence
            PID:4744
    • C:\Users\Admin\AppData\Roaming\svhost.exe
      C:\Users\Admin\AppData\Roaming\svhost.exe
      2⤵
      • 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:892
      • 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:4572
      • 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:3916
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\FolderName\svhost.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4656
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 300
        3⤵
        • Delays execution with timeout.exe
        PID:228

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scripting

1
T1064

Persistence

Winlogon Helper DLL

1
T1004

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Scripting

1
T1064

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\Roaming\FolderName\conhost.exe
    Filesize

    1.7MB

    MD5

    052a940aae3e54fc50f6a407e68f6e29

    SHA1

    a6be32c5d51476cc4d81d91959572c442209164a

    SHA256

    5a81bfc77d9724703ba17bfbb543b8d0e05ee11b1f8a0159dc1bfe6b55278cd7

    SHA512

    a5ad7a0336f2285018f844e4c5df30e9b19f2d7f7ff814a3ff1f69903c271fab60a3044efff5226265bd620491ba8abf7198a7c81019412bcc95cb4b027cbe63

  • C:\Users\Admin\AppData\Roaming\FolderName\invs.vbs
    Filesize

    78B

    MD5

    c578d9653b22800c3eb6b6a51219bbb8

    SHA1

    a97aa251901bbe179a48dbc7a0c1872e163b1f2d

    SHA256

    20a98a7e6e137bb1b9bd5ef6911a479cb8eac925b80d6db4e70b19f62a40cce2

    SHA512

    3ae6dc8f02d1a78e1235a0782b632972da5a74ab32287cc41aa672d4fa4a9d34bb5fc50eba07b6915f2e61c402927cd5f6feeb7f7602afa2f64e91efb3b7fc4d

  • C:\Users\Admin\AppData\Roaming\FolderName\mata.bat
    Filesize

    76B

    MD5

    5e57f6f4e3242ad9719ed5e65346e83e

    SHA1

    72346d0208c5edeb69f41ddb4374d56d87221dad

    SHA256

    4ffb3e764dfbc48145231f19e2217f666bc88a44c6f29adec6a5728223048d0c

    SHA512

    7dcd8a5a95965b94bf26ec02ab68b8f854f399d41fb713e4387f6fddb9914c465ccf909f92ee6704e9c0397a77f11f2ca803d68184aa414651988d95824a209f

  • C:\Users\Admin\AppData\Roaming\FolderName\mata2.bat
    Filesize

    276B

    MD5

    38cc2d8abc984eaf52aa9985d365d921

    SHA1

    163d8e032a782e3a0659410ae73aca4919b235c5

    SHA256

    5f607aebebcc89161ad09438daaf8e762f93831582872f30cac64af4f44934ed

    SHA512

    3581ecdee8c161a3a6c8ece68007184320860150d5267f9f8810e921b33c52c87dc4ae9c41a4ad6ce6fd052c06a40b946f9ff7dd62dd60257433a98ee2d0b720

  • C:\Users\Admin\AppData\Roaming\FolderName\svhost.bat
    Filesize

    209B

    MD5

    765b80e8b0dc085d7483f00ad6047559

    SHA1

    ada164420408fe1a65e202a196d6cc28034c4170

    SHA256

    f9864bb33c185eade6c9581303d64b963e5cdd3e52d5565ed575035790c9c15b

    SHA512

    a892c701fa133b958c0dd489853fe827206245d71d873d798b308b992f6a0774f6774515d6aef3423a4a530929d3952d3d057f84123900c8be1fcf8a2b7bb67e

  • C:\Users\Admin\AppData\Roaming\svhost.exe
    Filesize

    52KB

    MD5

    a64daca3cfbcd039df3ec29d3eddd001

    SHA1

    eee8b2573f71e8d5c3ee7e53af3e6772e090d0f3

    SHA256

    403752009f29381d5e4036b8be94589c89188f9ce8ef5f86959eaaada019ed36

    SHA512

    b6fe2d0ae3fcd4442579ecf10d498d61e0f042813c8fc4be8019da77d849cfcf0b168507139a1b5697227c272de9091788f8e03cf1ce13d5b5077568cfa6a479

  • C:\Users\Admin\AppData\Roaming\svhost.exe
    Filesize

    52KB

    MD5

    a64daca3cfbcd039df3ec29d3eddd001

    SHA1

    eee8b2573f71e8d5c3ee7e53af3e6772e090d0f3

    SHA256

    403752009f29381d5e4036b8be94589c89188f9ce8ef5f86959eaaada019ed36

    SHA512

    b6fe2d0ae3fcd4442579ecf10d498d61e0f042813c8fc4be8019da77d849cfcf0b168507139a1b5697227c272de9091788f8e03cf1ce13d5b5077568cfa6a479

  • memory/228-150-0x0000000000000000-mapping.dmp
  • memory/892-138-0x0000000000400000-0x0000000000488000-memory.dmp
    Filesize

    544KB

  • memory/892-143-0x00000000745F0000-0x0000000074BA1000-memory.dmp
    Filesize

    5.7MB

  • memory/892-156-0x00000000745F0000-0x0000000074BA1000-memory.dmp
    Filesize

    5.7MB

  • memory/892-137-0x0000000000000000-mapping.dmp
  • memory/1408-134-0x0000000000000000-mapping.dmp
  • memory/2116-136-0x0000000000000000-mapping.dmp
  • memory/2492-132-0x00000000745F0000-0x0000000074BA1000-memory.dmp
    Filesize

    5.7MB

  • memory/2492-148-0x00000000745F0000-0x0000000074BA1000-memory.dmp
    Filesize

    5.7MB

  • memory/2492-133-0x00000000745F0000-0x0000000074BA1000-memory.dmp
    Filesize

    5.7MB

  • memory/3784-144-0x0000000000000000-mapping.dmp
  • memory/3916-163-0x0000000000400000-0x0000000000458000-memory.dmp
    Filesize

    352KB

  • memory/3916-160-0x0000000000400000-0x0000000000458000-memory.dmp
    Filesize

    352KB

  • memory/3916-161-0x0000000000400000-0x0000000000458000-memory.dmp
    Filesize

    352KB

  • memory/3916-158-0x0000000000400000-0x0000000000458000-memory.dmp
    Filesize

    352KB

  • memory/3916-157-0x0000000000000000-mapping.dmp
  • memory/4572-154-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/4572-155-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/4572-152-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/4572-151-0x0000000000000000-mapping.dmp
  • memory/4656-146-0x0000000000000000-mapping.dmp
  • memory/4744-145-0x0000000000000000-mapping.dmp