Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-04-2024 01:38

General

  • Target

    b1f7d2a6fee6eb162c9e154b565ee6fe95c6e03fa15bef35d8c14663b844087c.exe

  • Size

    894KB

  • MD5

    9af50ddc8887f5389642c602ab333581

  • SHA1

    20d348837ef05b6ed0eccd3300fce74c8038c599

  • SHA256

    b1f7d2a6fee6eb162c9e154b565ee6fe95c6e03fa15bef35d8c14663b844087c

  • SHA512

    fc903cf2c987c30fac85421416ecdd5f57b773b33c62cc5acdabbd10fd01160dbc02ce86a4064776b0a2cd36e782da44931c4ac3d4ef3f6620af2d516f5f9d50

  • SSDEEP

    24576:bHYmq2tNBlF1qaf1etRc/dZeBrHO3ein9mUO:DYUtNBlP1etRcVZeBrupo/

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

paygateme.net:2286

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • 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

    Rmc-WTDTSU

  • screenshot_crypt

    true

  • screenshot_flag

    true

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 6 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b1f7d2a6fee6eb162c9e154b565ee6fe95c6e03fa15bef35d8c14663b844087c.exe
    "C:\Users\Admin\AppData\Local\Temp\b1f7d2a6fee6eb162c9e154b565ee6fe95c6e03fa15bef35d8c14663b844087c.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4372
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mmznklFQRO.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2960
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mmznklFQRO" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB67F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4860
    • C:\Users\Admin\AppData\Local\Temp\b1f7d2a6fee6eb162c9e154b565ee6fe95c6e03fa15bef35d8c14663b844087c.exe
      "C:\Users\Admin\AppData\Local\Temp\b1f7d2a6fee6eb162c9e154b565ee6fe95c6e03fa15bef35d8c14663b844087c.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:520
      • C:\Users\Admin\AppData\Local\Temp\b1f7d2a6fee6eb162c9e154b565ee6fe95c6e03fa15bef35d8c14663b844087c.exe
        C:\Users\Admin\AppData\Local\Temp\b1f7d2a6fee6eb162c9e154b565ee6fe95c6e03fa15bef35d8c14663b844087c.exe /stext "C:\Users\Admin\AppData\Local\Temp\glhyxkwynjufmaueqkyml"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:1152
      • C:\Users\Admin\AppData\Local\Temp\b1f7d2a6fee6eb162c9e154b565ee6fe95c6e03fa15bef35d8c14663b844087c.exe
        C:\Users\Admin\AppData\Local\Temp\b1f7d2a6fee6eb162c9e154b565ee6fe95c6e03fa15bef35d8c14663b844087c.exe /stext "C:\Users\Admin\AppData\Local\Temp\qnmiydhrbrmsohqizusooadfy"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:3204
      • C:\Users\Admin\AppData\Local\Temp\b1f7d2a6fee6eb162c9e154b565ee6fe95c6e03fa15bef35d8c14663b844087c.exe
        C:\Users\Admin\AppData\Local\Temp\b1f7d2a6fee6eb162c9e154b565ee6fe95c6e03fa15bef35d8c14663b844087c.exe /stext "C:\Users\Admin\AppData\Local\Temp\thrbzvstpzewzveuqffhzfywhjhe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4088

Network

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat
    Filesize

    144B

    MD5

    529aff1fe1ee1a423e56331fde991221

    SHA1

    f278eaad9a1c5b90c550351df7a13cfd24d519c4

    SHA256

    b71fe503288adfadb411d19b9da92f4420ff54c4d830d549a422f94a7630bb61

    SHA512

    d6e44e099c904894883d6980d51d587db8802bc647639d74f3abc40e3c09c488108471d4a96701ab24b2dca80e83c03049e19d2ab680b250543011e5e039f7ea

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_w0a22r1s.hcy.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

    4KB

    MD5

    fc8ceff5210efa58594c67ed8f49a824

    SHA1

    dba98c98becbdf81f623cdca6cd0a993022fe6cd

    SHA256

    778b7d5b90428961459c82e9881fe0fece78424d6301eb0720a96f100511f599

    SHA512

    c3b24fe5f5ba39174528ffc05544da6f22ac6aef2cac923ad139c0d044989873e004f9f5018cc0cc6847b5878f5aee96d6de823c860ac54a0fc67ff8d2d89cd1

  • C:\Users\Admin\AppData\Local\Temp\tmpB67F.tmp
    Filesize

    1KB

    MD5

    ea7738e0f62ef32032acb8b910dec13b

    SHA1

    bbfc66835aef942e0061a60b989f8d74105a3b9e

    SHA256

    7d59c93a5e271020e11666c38074ef5aeea24360c98c7c8637334e152b4e8894

    SHA512

    faf17278f34a7ca5e8cebdfdbd2ee827999ef519b4b14972c085f802c445b015d8efd620aa9e2d92de12a1b95384ae02d4cec68858d9cfb0ecffa48d5a57e933

  • memory/520-22-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-144-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-127-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-121-0x0000000010000000-0x0000000010019000-memory.dmp
    Filesize

    100KB

  • memory/520-136-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-119-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-118-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-115-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-113-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-112-0x0000000010000000-0x0000000010019000-memory.dmp
    Filesize

    100KB

  • memory/520-110-0x0000000010000000-0x0000000010019000-memory.dmp
    Filesize

    100KB

  • memory/520-137-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-111-0x0000000010000000-0x0000000010019000-memory.dmp
    Filesize

    100KB

  • memory/520-106-0x0000000010000000-0x0000000010019000-memory.dmp
    Filesize

    100KB

  • memory/520-52-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-23-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-25-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-128-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-33-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-51-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-34-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-30-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-145-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-29-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-50-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-44-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-53-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-56-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/520-47-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/1152-78-0x0000000000400000-0x0000000000478000-memory.dmp
    Filesize

    480KB

  • memory/1152-83-0x0000000000400000-0x0000000000478000-memory.dmp
    Filesize

    480KB

  • memory/1152-87-0x0000000000400000-0x0000000000478000-memory.dmp
    Filesize

    480KB

  • memory/1152-101-0x0000000000400000-0x0000000000478000-memory.dmp
    Filesize

    480KB

  • memory/2960-58-0x0000000071280000-0x00000000712CC000-memory.dmp
    Filesize

    304KB

  • memory/2960-27-0x0000000005850000-0x0000000005872000-memory.dmp
    Filesize

    136KB

  • memory/2960-54-0x0000000002EE0000-0x0000000002EF0000-memory.dmp
    Filesize

    64KB

  • memory/2960-48-0x0000000006810000-0x000000000682E000-memory.dmp
    Filesize

    120KB

  • memory/2960-57-0x00000000077E0000-0x0000000007812000-memory.dmp
    Filesize

    200KB

  • memory/2960-14-0x0000000005280000-0x00000000052B6000-memory.dmp
    Filesize

    216KB

  • memory/2960-68-0x0000000006DE0000-0x0000000006DFE000-memory.dmp
    Filesize

    120KB

  • memory/2960-69-0x0000000007A20000-0x0000000007AC3000-memory.dmp
    Filesize

    652KB

  • memory/2960-70-0x0000000008180000-0x00000000087FA000-memory.dmp
    Filesize

    6.5MB

  • memory/2960-71-0x0000000007B40000-0x0000000007B5A000-memory.dmp
    Filesize

    104KB

  • memory/2960-72-0x0000000007BB0000-0x0000000007BBA000-memory.dmp
    Filesize

    40KB

  • memory/2960-74-0x0000000007DC0000-0x0000000007E56000-memory.dmp
    Filesize

    600KB

  • memory/2960-75-0x0000000007D40000-0x0000000007D51000-memory.dmp
    Filesize

    68KB

  • memory/2960-76-0x0000000007D70000-0x0000000007D7E000-memory.dmp
    Filesize

    56KB

  • memory/2960-77-0x0000000007D80000-0x0000000007D94000-memory.dmp
    Filesize

    80KB

  • memory/2960-15-0x0000000074E80000-0x0000000075630000-memory.dmp
    Filesize

    7.7MB

  • memory/2960-17-0x0000000002EE0000-0x0000000002EF0000-memory.dmp
    Filesize

    64KB

  • memory/2960-81-0x0000000007E80000-0x0000000007E9A000-memory.dmp
    Filesize

    104KB

  • memory/2960-19-0x00000000058F0000-0x0000000005F18000-memory.dmp
    Filesize

    6.2MB

  • memory/2960-45-0x0000000006230000-0x0000000006584000-memory.dmp
    Filesize

    3.3MB

  • memory/2960-18-0x0000000002EE0000-0x0000000002EF0000-memory.dmp
    Filesize

    64KB

  • memory/2960-28-0x0000000006150000-0x00000000061B6000-memory.dmp
    Filesize

    408KB

  • memory/2960-91-0x0000000007E60000-0x0000000007E68000-memory.dmp
    Filesize

    32KB

  • memory/2960-49-0x0000000006850000-0x000000000689C000-memory.dmp
    Filesize

    304KB

  • memory/2960-104-0x0000000074E80000-0x0000000075630000-memory.dmp
    Filesize

    7.7MB

  • memory/2960-32-0x00000000061C0000-0x0000000006226000-memory.dmp
    Filesize

    408KB

  • memory/3204-79-0x0000000000400000-0x0000000000462000-memory.dmp
    Filesize

    392KB

  • memory/3204-96-0x0000000000400000-0x0000000000462000-memory.dmp
    Filesize

    392KB

  • memory/3204-89-0x0000000000400000-0x0000000000462000-memory.dmp
    Filesize

    392KB

  • memory/3204-84-0x0000000000400000-0x0000000000462000-memory.dmp
    Filesize

    392KB

  • memory/4088-99-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/4088-92-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/4088-98-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/4088-86-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/4372-26-0x0000000074E80000-0x0000000075630000-memory.dmp
    Filesize

    7.7MB

  • memory/4372-16-0x0000000074E80000-0x0000000075630000-memory.dmp
    Filesize

    7.7MB

  • memory/4372-20-0x0000000004FD0000-0x0000000004FE0000-memory.dmp
    Filesize

    64KB

  • memory/4372-1-0x0000000074E80000-0x0000000075630000-memory.dmp
    Filesize

    7.7MB

  • memory/4372-9-0x0000000009F60000-0x0000000009FFC000-memory.dmp
    Filesize

    624KB

  • memory/4372-8-0x0000000007860000-0x0000000007920000-memory.dmp
    Filesize

    768KB

  • memory/4372-7-0x0000000005280000-0x000000000528C000-memory.dmp
    Filesize

    48KB

  • memory/4372-6-0x0000000005260000-0x0000000005270000-memory.dmp
    Filesize

    64KB

  • memory/4372-5-0x0000000004DC0000-0x0000000004DCA000-memory.dmp
    Filesize

    40KB

  • memory/4372-4-0x0000000004FD0000-0x0000000004FE0000-memory.dmp
    Filesize

    64KB

  • memory/4372-3-0x0000000004DF0000-0x0000000004E82000-memory.dmp
    Filesize

    584KB

  • memory/4372-2-0x00000000052C0000-0x0000000005864000-memory.dmp
    Filesize

    5.6MB

  • memory/4372-0-0x00000000002D0000-0x00000000003B6000-memory.dmp
    Filesize

    920KB