remcos | a476bbaa6e74f99bd01b9731df91fc94f54537f2c39180801053b6db8391da62

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
14/05/2024, 13:26

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General

Target
msimg32.dll
Size 45.1MB
Sample240514-qpkbsshc43
SHA256 aef75ceab9f76c6ac42ed1d6daa5de0af7988ccf89289ef83dbcf29701a4a31d
MD5 223dee6b503814aaaff6933ba8c089d4
SHA1 f6987c1247bbf6cd30d96a4175e09ce7c5b5e11f
SHA512 d4efab59379ca36631193ce7f7347a3c00f9422c4ad2660714d398c1dbf913b40727523a9fe04bb6ba9f4f7beae9afe8b58014c4371e35face52b58706c26b61
SSDEEP 786432:uUP7GCGO7t0Srkx/tC0SzIdSwh/WxbpNHQD3trzRp7:uUP7GCG6iSrkx1hSzYsHQD3t/RR
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos remotehost persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

quitthebullshit.duckdns.org:5050

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-GWBP99
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.
rat remcos

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\*crowdUpdater = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\crowdstrikeModule.dll,EntryPoint"	reg.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1164	regsvr32.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 860 wrote to memory of 1164	860	regsvr32.exe	82
PID 860 wrote to memory of 1164	860	regsvr32.exe	82
PID 860 wrote to memory of 1164	860	regsvr32.exe	82
PID 1164 wrote to memory of 2312	1164	regsvr32.exe	86
PID 1164 wrote to memory of 2312	1164	regsvr32.exe	86
PID 1164 wrote to memory of 2312	1164	regsvr32.exe	86
PID 1164 wrote to memory of 2312	1164	regsvr32.exe	86
PID 1164 wrote to memory of 2312	1164	regsvr32.exe	86
PID 1164 wrote to memory of 2312	1164	regsvr32.exe	86
PID 1164 wrote to memory of 908	1164	regsvr32.exe	87
PID 1164 wrote to memory of 908	1164	regsvr32.exe	87
PID 1164 wrote to memory of 908	1164	regsvr32.exe	87
PID 908 wrote to memory of 4720	908	cmd.exe	89
PID 908 wrote to memory of 4720	908	cmd.exe	89
PID 908 wrote to memory of 4720	908	cmd.exe	89

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\msimg32.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:860
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\msimg32.dll
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of WriteProcessMemory
  PID:1164
- - C:\Windows\SysWOW64\regsvr32.exe
    "C:\Windows\SysWOW64\regsvr32.exe"
    3⤵
    PID:2312
- - C:\Windows\SysWOW64\cmd.exe
    cmd.exe /C reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*crowdUpdater" /t REG_SZ /d "rundll32.exe C:\Users\Admin\AppData\Roaming\crowdstrikeModule.dll",EntryPoint /f & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:908
  - - C:\Windows\SysWOW64\reg.exe
      reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*crowdUpdater" /t REG_SZ /d "rundll32.exe C:\Users\Admin\AppData\Roaming\crowdstrikeModule.dll",EntryPoint /f
      4⤵
      Adds Run key to start application
      PID:4720

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1164-4-0x0000000010000000-0x0000000012DDA000-memory.dmp

Download

memory/1164-0-0x0000000010000000-0x0000000012DDA000-memory.dmp

Download

memory/1164-1-0x00000000102E6000-0x0000000010300000-memory.dmp

Download

memory/1164-10-0x0000000012DAD000-0x0000000012DDA000-memory.dmp

Download

memory/2312-12-0x0000000000850000-0x00000000008D2000-memory.dmp

Download

memory/2312-15-0x0000000000850000-0x00000000008D2000-memory.dmp

Download

memory/2312-8-0x0000000000850000-0x00000000008D2000-memory.dmp

Download

memory/2312-9-0x0000000000850000-0x00000000008D2000-memory.dmp

Download

memory/2312-6-0x0000000000850000-0x00000000008D2000-memory.dmp

Download

memory/2312-11-0x0000000000850000-0x00000000008D2000-memory.dmp

Download

memory/2312-2-0x00000000008E0000-0x00000000008E1000-memory.dmp

Download

memory/2312-13-0x0000000000850000-0x00000000008D2000-memory.dmp

Download

memory/2312-14-0x0000000000850000-0x00000000008D2000-memory.dmp

Download

memory/2312-5-0x0000000000850000-0x00000000008D2000-memory.dmp

Download

memory/2312-16-0x0000000000850000-0x00000000008D2000-memory.dmp

Download

memory/2312-17-0x0000000000850000-0x00000000008D2000-memory.dmp

Download

memory/2312-18-0x0000000000850000-0x00000000008D2000-memory.dmp

Download

memory/2312-19-0x0000000000850000-0x00000000008D2000-memory.dmp

Download

memory/2312-20-0x0000000000850000-0x00000000008D2000-memory.dmp

Download

memory/2312-21-0x0000000000850000-0x00000000008D2000-memory.dmp

Download

memory/2312-22-0x0000000000850000-0x00000000008D2000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads