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Analysis

  • max time kernel
    147s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/05/2024, 01:15

General

  • Target

    DELAY NOTICE - HUMPERT-WH (SO.5649) 521.PDF.scr.exe

  • Size

    996KB

  • MD5

    3112375e035766a604350754d20460dd

  • SHA1

    6f8377e4b95fd9f5af3921616410b2c986dfb8ba

  • SHA256

    866de3bdc1cc207c818212511641cdf5e6220f304619a26b5e9cb2d2b9c8a309

  • SHA512

    6a7186b4b76575a51374fadd1120163e47d0bb21d8dfc000893f91a57e7f3487f68338de651bb21a78cd8ef6e5581c2d6b2d7c5c7b0f188071a8f1f70d0b1258

  • SSDEEP

    24576:wn698VVYl6Jic3uH34B+HH5U3F7+IYz8pLjG0:H9SBx3uX4Q5U3pnYO/G0

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.

  • 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
  • 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
  • Suspicious use of SetThreadContext 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DELAY NOTICE - HUMPERT-WH (SO.5649) 521.PDF.scr.exe
    "C:\Users\Admin\AppData\Local\Temp\DELAY NOTICE - HUMPERT-WH (SO.5649) 521.PDF.scr.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:692
    • C:\Users\Admin\AppData\Local\Temp\DELAY NOTICE - HUMPERT-WH (SO.5649) 521.PDF.scr.exe
      "C:\Users\Admin\AppData\Local\Temp\DELAY NOTICE - HUMPERT-WH (SO.5649) 521.PDF.scr.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:812
      • C:\Users\Admin\AppData\Local\Temp\DELAY NOTICE - HUMPERT-WH (SO.5649) 521.PDF.scr.exe
        "C:\Users\Admin\AppData\Local\Temp\DELAY NOTICE - HUMPERT-WH (SO.5649) 521.PDF.scr.exe" /stext "C:\Users\Admin\AppData\Local\Temp\laqkytdhwjpysoafj"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:3596
      • C:\Users\Admin\AppData\Local\Temp\DELAY NOTICE - HUMPERT-WH (SO.5649) 521.PDF.scr.exe
        "C:\Users\Admin\AppData\Local\Temp\DELAY NOTICE - HUMPERT-WH (SO.5649) 521.PDF.scr.exe" /stext "C:\Users\Admin\AppData\Local\Temp\vcvdyloisrhluuojsmpc"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:1956
      • C:\Users\Admin\AppData\Local\Temp\DELAY NOTICE - HUMPERT-WH (SO.5649) 521.PDF.scr.exe
        "C:\Users\Admin\AppData\Local\Temp\DELAY NOTICE - HUMPERT-WH (SO.5649) 521.PDF.scr.exe" /stext "C:\Users\Admin\AppData\Local\Temp\fwawzegcgzzqeilnjwbwjop"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4908

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    4KB

    MD5

    73ddf6cd83c2ad8a2fbb2383e322ffbc

    SHA1

    05270f8bb7b5cc6ab9a61ae7453d047379089147

    SHA256

    0ef9194c6e90b23c416316fc5a15f549ee5b2472014fcd7648d72ca9a865b409

    SHA512

    714db1956faa795005b15324b9604105881d6b484fe899876fe0df85783c61a72f556a875833af8625625212503b95eea2eb353a1d98f6a7af47a3658ea5262d

  • memory/692-6-0x0000000005AB0000-0x0000000005AD2000-memory.dmp

    Filesize

    136KB

  • memory/692-2-0x0000000005E90000-0x0000000006434000-memory.dmp

    Filesize

    5.6MB

  • memory/692-3-0x00000000058E0000-0x0000000005972000-memory.dmp

    Filesize

    584KB

  • memory/692-4-0x00000000058B0000-0x00000000058BA000-memory.dmp

    Filesize

    40KB

  • memory/692-5-0x0000000074AE0000-0x0000000075290000-memory.dmp

    Filesize

    7.7MB

  • memory/692-18-0x0000000074AE0000-0x0000000075290000-memory.dmp

    Filesize

    7.7MB

  • memory/692-7-0x0000000005AE0000-0x0000000005AEC000-memory.dmp

    Filesize

    48KB

  • memory/692-8-0x0000000005310000-0x0000000005320000-memory.dmp

    Filesize

    64KB

  • memory/692-9-0x0000000006DB0000-0x0000000006E70000-memory.dmp

    Filesize

    768KB

  • memory/692-10-0x00000000072B0000-0x000000000734C000-memory.dmp

    Filesize

    624KB

  • memory/692-0-0x0000000074AEE000-0x0000000074AEF000-memory.dmp

    Filesize

    4KB

  • memory/692-1-0x0000000000E00000-0x0000000000EFC000-memory.dmp

    Filesize

    1008KB

  • memory/812-45-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/812-58-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/812-14-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/812-17-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/812-19-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/812-20-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/812-22-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/812-21-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/812-24-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/812-60-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/812-15-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/812-61-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/812-59-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/812-49-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/812-57-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/812-56-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/812-55-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/812-54-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/812-53-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/812-52-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/812-51-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/812-50-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/812-12-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/812-11-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/812-48-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/1956-27-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/1956-30-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/1956-31-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/1956-39-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/1956-34-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3596-43-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3596-29-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3596-32-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3596-35-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3596-25-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4908-41-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4908-40-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4908-33-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB