Analysis

  • max time kernel
    150s
  • max time network
    131s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    22-05-2024 02:05

General

  • Target

    a7a04842ca3e817e5ae28cf389f590ba2a4f76c63e25249419bad63277b7312f.exe

  • Size

    652KB

  • MD5

    3783014e89435e8f979155435933d4f0

  • SHA1

    c711fb0d97d5d363e241ed5532c6331e0fe8aa57

  • SHA256

    a7a04842ca3e817e5ae28cf389f590ba2a4f76c63e25249419bad63277b7312f

  • SHA512

    611452baa7692ffd4a5f3fb73d60a0e1b4ecc8a77d1d94021c87e369909c8d9d583c5e2ae575fd7ebb95b5a3e70fb670fa4d97a4594644b74d1bb1adc9c75010

  • SSDEEP

    12288:NgeDYSnG4nSUWbjU0WHUMTJRewXLvWkgTkVj:tDYSnG4n2bjmHUMhvKI

Malware Config

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Detects executables built or packed with MPress PE compressor 18 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 3 IoCs
  • Detects executables referencing many email and collaboration clients. Observed in information stealers 3 IoCs
  • NirSoft MailPassView 3 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 3 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 9 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a7a04842ca3e817e5ae28cf389f590ba2a4f76c63e25249419bad63277b7312f.exe
    "C:\Users\Admin\AppData\Local\Temp\a7a04842ca3e817e5ae28cf389f590ba2a4f76c63e25249419bad63277b7312f.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2256
    • C:\Users\Admin\AppData\Local\Temp\a7a04842ca3e817e5ae28cf389f590ba2a4f76c63e25249419bad63277b7312f.exe
      "C:\Users\Admin\AppData\Local\Temp\a7a04842ca3e817e5ae28cf389f590ba2a4f76c63e25249419bad63277b7312f.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2000
      • C:\Users\Admin\AppData\Local\Temp\a7a04842ca3e817e5ae28cf389f590ba2a4f76c63e25249419bad63277b7312f.exe
        C:\Users\Admin\AppData\Local\Temp\a7a04842ca3e817e5ae28cf389f590ba2a4f76c63e25249419bad63277b7312f.exe /stext "C:\Users\Admin\AppData\Local\Temp\opyytpnmjfcfmiplnxvzhp"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:2436
      • C:\Users\Admin\AppData\Local\Temp\a7a04842ca3e817e5ae28cf389f590ba2a4f76c63e25249419bad63277b7312f.exe
        C:\Users\Admin\AppData\Local\Temp\a7a04842ca3e817e5ae28cf389f590ba2a4f76c63e25249419bad63277b7312f.exe /stext "C:\Users\Admin\AppData\Local\Temp\ykdruhxnxnukwodpwhibrclxn"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:2496
      • C:\Users\Admin\AppData\Local\Temp\a7a04842ca3e817e5ae28cf389f590ba2a4f76c63e25249419bad63277b7312f.exe
        C:\Users\Admin\AppData\Local\Temp\a7a04842ca3e817e5ae28cf389f590ba2a4f76c63e25249419bad63277b7312f.exe /stext "C:\Users\Admin\AppData\Local\Temp\jmibvaihlvmxyuzbnkvcuhygvdez"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2376

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\opyytpnmjfcfmiplnxvzhp

    Filesize

    2B

    MD5

    f3b25701fe362ec84616a93a45ce9998

    SHA1

    d62636d8caec13f04e28442a0a6fa1afeb024bbb

    SHA256

    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

    SHA512

    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

  • C:\Users\Admin\Pictures\belejrernes.lnk

    Filesize

    1KB

    MD5

    7088c6359f22a1602c8e26f1c9e45abc

    SHA1

    0c941f500cba269cbca3712726892b5a353683ec

    SHA256

    5b1b37bb003f79cab91158e0254ae528aba45909da920876c419ac5bdb773a86

    SHA512

    8f144af503cde1aec06292b6f192e11a9f2775c134e9683216b2783b86925ca2c036413a130fb00ce7af4a18ee2a294e20a98120fdacdb2b8b33625ffcc07961

  • \Users\Admin\AppData\Local\Temp\nso8336.tmp\System.dll

    Filesize

    11KB

    MD5

    fc3772787eb239ef4d0399680dcc4343

    SHA1

    db2fa99ec967178cd8057a14a428a8439a961a73

    SHA256

    9b93c61c9d63ef8ec80892cc0e4a0877966dca9b0c3eb85555cebd2ddf4d6eed

    SHA512

    79e491ca4591a5da70116114b7fbb66ee15a0532386035e980c9dfe7afb59b1f9d9c758891e25bfb45c36b07afd3e171bac37a86c887387ef0e80b1eaf296c89

  • memory/2000-293-0x0000000077200000-0x00000000773A9000-memory.dmp

    Filesize

    1.7MB

  • memory/2000-295-0x00000000004B0000-0x0000000001512000-memory.dmp

    Filesize

    16.4MB

  • memory/2000-297-0x0000000001520000-0x0000000006D7F000-memory.dmp

    Filesize

    88.4MB

  • memory/2000-330-0x0000000037720000-0x0000000037739000-memory.dmp

    Filesize

    100KB

  • memory/2000-329-0x0000000037720000-0x0000000037739000-memory.dmp

    Filesize

    100KB

  • memory/2000-326-0x0000000037720000-0x0000000037739000-memory.dmp

    Filesize

    100KB

  • memory/2256-291-0x0000000077201000-0x0000000077302000-memory.dmp

    Filesize

    1.0MB

  • memory/2256-292-0x0000000077200000-0x00000000773A9000-memory.dmp

    Filesize

    1.7MB

  • memory/2376-309-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2376-314-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2376-308-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2376-310-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2376-313-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2436-305-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2436-311-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2436-320-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2436-307-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2436-302-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2496-304-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2496-312-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2496-306-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2496-325-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2496-303-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB