Analysis

  • max time kernel
    151s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-03-2024 16:26

General

  • Target

    Ref [HSBC Ref# H240322-X793Y1] Transaction_Confirmation_2024.exe

  • Size

    966KB

  • MD5

    f3e307899834694db498e895cac1dbfc

  • SHA1

    70b232b365656082f79d07c4c4db584d90befa6f

  • SHA256

    e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f

  • SHA512

    da23dd49a1ef7b281eb90ddf1c166d4f30a35d0fee2ddafcd146932e4a429669724550d3451549a852361a0d1e09362b13545cace490944dba8afbb28f4def9e

  • SSDEEP

    12288:24CMwo4aGsl0flTM3gk1LOjUnF5r1xyJnyrO2xM3agDrkPNCT7vI1Jhc0Xr1A:mF9TMprr3yRz2i9yNk7vI1Jhc4r

Score
10/10

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

91.92.247.97:2505

stefracino.store:2505

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

    true

  • install_flag

    false

  • keylog_crypt

    true

  • keylog_file

    togs.dat

  • keylog_flag

    false

  • keylog_folder

    stefcos

  • mouse_option

    false

  • mutex

    Rmc-POOUYY

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Uses the VBS compiler for execution 1 TTPs
  • Suspicious use of SetThreadContext 1 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 9 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Ref [HSBC Ref# H240322-X793Y1] Transaction_Confirmation_2024.exe
    "C:\Users\Admin\AppData\Local\Temp\Ref [HSBC Ref# H240322-X793Y1] Transaction_Confirmation_2024.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4216
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Ref [HSBC Ref# H240322-X793Y1] Transaction_Confirmation_2024.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1508
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\UlvywtFnmZtH.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4088
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UlvywtFnmZtH" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB0C2.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:5064
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
      2⤵
      • Suspicious behavior: GetForegroundWindowSpam
      PID:3988

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    968cb9309758126772781b83adb8a28f

    SHA1

    8da30e71accf186b2ba11da1797cf67f8f78b47c

    SHA256

    92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

    SHA512

    4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_usfmofov.3vf.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpB0C2.tmp

    Filesize

    1KB

    MD5

    54f871890eae5d789e1802ce7b1f0ca9

    SHA1

    14fe7b9446b35492e9b7f09ad9768d2e9ca2d5f1

    SHA256

    4b85c999de1eea4610320f789cd9519e4741c48c1d8f806f445b797541ceb15f

    SHA512

    8c1484701b40e92fa5cd9ddc3b1c1cc88bc360aa191eb178562807a0553dc8e1de44b96c807d763ecf931f9babc9debc1c9092f71595249db5b9aa3badd0d76b

  • memory/1508-88-0x0000000007E00000-0x0000000007E96000-memory.dmp

    Filesize

    600KB

  • memory/1508-18-0x0000000005A30000-0x0000000006058000-memory.dmp

    Filesize

    6.2MB

  • memory/1508-37-0x0000000006280000-0x00000000065D4000-memory.dmp

    Filesize

    3.3MB

  • memory/1508-97-0x00000000744B0000-0x0000000074C60000-memory.dmp

    Filesize

    7.7MB

  • memory/1508-24-0x0000000005790000-0x00000000057B2000-memory.dmp

    Filesize

    136KB

  • memory/1508-92-0x0000000007EC0000-0x0000000007EDA000-memory.dmp

    Filesize

    104KB

  • memory/1508-89-0x0000000007D80000-0x0000000007D91000-memory.dmp

    Filesize

    68KB

  • memory/1508-14-0x0000000002F30000-0x0000000002F66000-memory.dmp

    Filesize

    216KB

  • memory/1508-15-0x00000000744B0000-0x0000000074C60000-memory.dmp

    Filesize

    7.7MB

  • memory/1508-17-0x0000000002FE0000-0x0000000002FF0000-memory.dmp

    Filesize

    64KB

  • memory/1508-16-0x0000000002FE0000-0x0000000002FF0000-memory.dmp

    Filesize

    64KB

  • memory/1508-59-0x0000000002FE0000-0x0000000002FF0000-memory.dmp

    Filesize

    64KB

  • memory/1508-60-0x000000007F610000-0x000000007F620000-memory.dmp

    Filesize

    64KB

  • memory/1508-74-0x0000000070AA0000-0x0000000070AEC000-memory.dmp

    Filesize

    304KB

  • memory/1508-61-0x0000000006E30000-0x0000000006E62000-memory.dmp

    Filesize

    200KB

  • memory/3988-99-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3988-102-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3988-53-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3988-56-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3988-101-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3988-103-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3988-100-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3988-43-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3988-47-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3988-49-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3988-54-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3988-52-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3988-51-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4088-19-0x00000000744B0000-0x0000000074C60000-memory.dmp

    Filesize

    7.7MB

  • memory/4088-85-0x0000000007AB0000-0x000000000812A000-memory.dmp

    Filesize

    6.5MB

  • memory/4088-26-0x0000000005A10000-0x0000000005A76000-memory.dmp

    Filesize

    408KB

  • memory/4088-55-0x0000000006170000-0x000000000618E000-memory.dmp

    Filesize

    120KB

  • memory/4088-57-0x0000000006200000-0x000000000624C000-memory.dmp

    Filesize

    304KB

  • memory/4088-58-0x0000000002930000-0x0000000002940000-memory.dmp

    Filesize

    64KB

  • memory/4088-25-0x0000000005130000-0x0000000005196000-memory.dmp

    Filesize

    408KB

  • memory/4088-62-0x0000000070AA0000-0x0000000070AEC000-memory.dmp

    Filesize

    304KB

  • memory/4088-63-0x000000007F330000-0x000000007F340000-memory.dmp

    Filesize

    64KB

  • memory/4088-22-0x0000000002930000-0x0000000002940000-memory.dmp

    Filesize

    64KB

  • memory/4088-73-0x00000000070C0000-0x00000000070DE000-memory.dmp

    Filesize

    120KB

  • memory/4088-84-0x0000000007130000-0x00000000071D3000-memory.dmp

    Filesize

    652KB

  • memory/4088-98-0x00000000744B0000-0x0000000074C60000-memory.dmp

    Filesize

    7.7MB

  • memory/4088-20-0x0000000002930000-0x0000000002940000-memory.dmp

    Filesize

    64KB

  • memory/4088-86-0x0000000007470000-0x000000000748A000-memory.dmp

    Filesize

    104KB

  • memory/4088-93-0x0000000007790000-0x0000000007798000-memory.dmp

    Filesize

    32KB

  • memory/4088-87-0x00000000074E0000-0x00000000074EA000-memory.dmp

    Filesize

    40KB

  • memory/4088-91-0x00000000076B0000-0x00000000076C4000-memory.dmp

    Filesize

    80KB

  • memory/4088-90-0x00000000076A0000-0x00000000076AE000-memory.dmp

    Filesize

    56KB

  • memory/4216-9-0x0000000006370000-0x0000000006430000-memory.dmp

    Filesize

    768KB

  • memory/4216-0-0x00000000744B0000-0x0000000074C60000-memory.dmp

    Filesize

    7.7MB

  • memory/4216-8-0x0000000005140000-0x000000000514C000-memory.dmp

    Filesize

    48KB

  • memory/4216-50-0x00000000744B0000-0x0000000074C60000-memory.dmp

    Filesize

    7.7MB

  • memory/4216-7-0x0000000004E20000-0x0000000004E32000-memory.dmp

    Filesize

    72KB

  • memory/4216-21-0x00000000744B0000-0x0000000074C60000-memory.dmp

    Filesize

    7.7MB

  • memory/4216-6-0x0000000004D80000-0x0000000004E1C000-memory.dmp

    Filesize

    624KB

  • memory/4216-5-0x0000000004BA0000-0x0000000004BAA000-memory.dmp

    Filesize

    40KB

  • memory/4216-4-0x0000000004C80000-0x0000000004C90000-memory.dmp

    Filesize

    64KB

  • memory/4216-3-0x0000000004AE0000-0x0000000004B72000-memory.dmp

    Filesize

    584KB

  • memory/4216-2-0x0000000005150000-0x00000000056F4000-memory.dmp

    Filesize

    5.6MB

  • memory/4216-1-0x0000000000050000-0x0000000000146000-memory.dmp

    Filesize

    984KB