Analysis

  • max time kernel
    150s
  • max time network
    134s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    23-05-2024 01:55

General

  • Target

    b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe

  • Size

    1.3MB

  • MD5

    60561cff1dee1f6bab79d28ab8a84dc3

  • SHA1

    abd6f2841675755c088b4d70dee090225caa73db

  • SHA256

    b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e

  • SHA512

    ab073292660e415fbc8181fe7fefb83c3cdb92531fd4812742f7143dc31a75f1ab8b0e72279d02ffef137956502aa5c13a8e78ed1894ffd648de74b11c946fff

  • SSDEEP

    24576:4Mbni723L73/gXFxoYXpmTvCkV0uf5ZmH1OvAwP0Cwbn:43a3L73ou7vCkCua1RwML

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

104.250.180.178:7902

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    Microsoft .exe

  • copy_folder

    Microsoft

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Microsoft -QUCX7D

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 19 IoCs
  • Detects executables built or packed with MPress PE compressor 16 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 7 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe
    "C:\Users\Admin\AppData\Local\Temp\b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2524
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:1468
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\difgffoerydsefzyycjxmsmjbnaqlyboj"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:2684
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\glkyg"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:296
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\qfprgqkat"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1312

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    2B

    MD5

    f3b25701fe362ec84616a93a45ce9998

    SHA1

    d62636d8caec13f04e28442a0a6fa1afeb024bbb

    SHA256

    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

    SHA512

    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

  • memory/296-39-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/296-60-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/296-45-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/296-47-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/296-51-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/296-41-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/1312-52-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1312-49-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1312-53-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1468-19-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1468-10-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1468-13-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1468-61-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/1468-21-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1468-17-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1468-15-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1468-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1468-64-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/1468-25-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1468-26-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1468-28-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1468-27-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1468-65-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/1468-30-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1468-31-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1468-32-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1468-33-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1468-35-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1468-66-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1468-9-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1468-11-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1468-69-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1468-67-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1468-68-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1468-70-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2524-6-0x00000000005C0000-0x00000000005DA000-memory.dmp

    Filesize

    104KB

  • memory/2524-5-0x00000000745D0000-0x0000000074CBE000-memory.dmp

    Filesize

    6.9MB

  • memory/2524-7-0x0000000000820000-0x0000000000826000-memory.dmp

    Filesize

    24KB

  • memory/2524-4-0x00000000745DE000-0x00000000745DF000-memory.dmp

    Filesize

    4KB

  • memory/2524-3-0x0000000005080000-0x00000000050C4000-memory.dmp

    Filesize

    272KB

  • memory/2524-8-0x00000000745D0000-0x0000000074CBE000-memory.dmp

    Filesize

    6.9MB

  • memory/2524-2-0x00000000745D0000-0x0000000074CBE000-memory.dmp

    Filesize

    6.9MB

  • memory/2524-1-0x0000000000F20000-0x000000000107C000-memory.dmp

    Filesize

    1.4MB

  • memory/2524-29-0x00000000745D0000-0x0000000074CBE000-memory.dmp

    Filesize

    6.9MB

  • memory/2524-24-0x00000000745D0000-0x0000000074CBE000-memory.dmp

    Filesize

    6.9MB

  • memory/2524-0-0x00000000745DE000-0x00000000745DF000-memory.dmp

    Filesize

    4KB

  • memory/2684-43-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2684-58-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2684-46-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2684-50-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2684-38-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB