remcos | 1a68aca62e00ff2d44bf9b5bab0840043dee5342ded8bdbbcae372d4c9f2db8b

Analysis

max time kernel
147s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
03/05/2024, 04:23

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General

Target
Tax Organizer.exe
Size 31KB
Sample240503-ezyfmaeh9t
SHA256 a73709c1b5f1f875ee35f477c4e263a57050c36e2cff31ad1ceca17d9623e7cd
MD5 4db45c5fdb9e115b922bdf007523f082
SHA1 90297382a170ff3ea7931db2425329d0b2f70f04
SHA512 7f0bcb2ee96c523cce764d1ec7d197d3aadddcf6fae71b63e88c3a26883b2f2fb4a446187adfbb023be779056ebc0ea50a785c72bbe97bb7dca41a810d0ff6c7
SSDEEP 384:V4Kj/M8y6ryzqEt7a9Oey+IFdP64VYaEwDtiBgxoxlnLr2STchsCxXBhgBx4eMDg:VHDXr+VWOV+csoHViBBn+hRIqeMDGt
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos remotehost persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

quickdatenight.duckdns.org:4047

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-JCJG7N
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-1-5-21-2818691465-3043947619-2475182763-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\*Mouhn = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\Lopeunt.dll,EntryPoint"	reg.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2840	Tax Organizer.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2840 wrote to memory of 4532	2840	Tax Organizer.exe	91
PID 2840 wrote to memory of 4532	2840	Tax Organizer.exe	91
PID 2840 wrote to memory of 4532	2840	Tax Organizer.exe	91
PID 2840 wrote to memory of 4532	2840	Tax Organizer.exe	91
PID 2840 wrote to memory of 4532	2840	Tax Organizer.exe	91
PID 2840 wrote to memory of 4532	2840	Tax Organizer.exe	91
PID 2840 wrote to memory of 3256	2840	Tax Organizer.exe	93
PID 2840 wrote to memory of 3256	2840	Tax Organizer.exe	93
PID 2840 wrote to memory of 3256	2840	Tax Organizer.exe	93
PID 3256 wrote to memory of 1188	3256	cmd.exe	95
PID 3256 wrote to memory of 1188	3256	cmd.exe	95
PID 3256 wrote to memory of 1188	3256	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\Tax Organizer.exe
"C:\Users\Admin\AppData\Local\Temp\Tax Organizer.exe"
1⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of WriteProcessMemory
PID:2840
- C:\Users\Admin\AppData\Local\Temp\Tax Organizer.exe
  "C:\Users\Admin\AppData\Local\Temp\Tax Organizer.exe"
  2⤵
  PID:4532
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /C reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*Mouhn" /t REG_SZ /d "rundll32.exe C:\Users\Admin\AppData\Roaming\Lopeunt.dll",EntryPoint /f & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3256
- - C:\Windows\SysWOW64\reg.exe
    reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*Mouhn" /t REG_SZ /d "rundll32.exe C:\Users\Admin\AppData\Roaming\Lopeunt.dll",EntryPoint /f
    3⤵
    - Adds Run key to start application
    PID:1188

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

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Downloads

memory/2840-9-0x0000000010000000-0x0000000011D0B000-memory.dmp

Download

memory/2840-16-0x0000000011CD7000-0x0000000011D04000-memory.dmp

Download

memory/2840-0-0x0000000010000000-0x0000000011D0B000-memory.dmp

Download

memory/2840-1-0x0000000010869000-0x0000000010882000-memory.dmp

Download

memory/4532-12-0x0000000000410000-0x0000000000492000-memory.dmp

Download

memory/4532-2-0x00000000001D0000-0x00000000001D1000-memory.dmp

Download

memory/4532-8-0x0000000000410000-0x0000000000492000-memory.dmp

Download

memory/4532-6-0x0000000000410000-0x0000000000492000-memory.dmp

Download

memory/4532-10-0x0000000000410000-0x0000000000492000-memory.dmp

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memory/4532-11-0x0000000000410000-0x0000000000492000-memory.dmp

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memory/4532-7-0x0000000000410000-0x0000000000492000-memory.dmp

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memory/4532-14-0x0000000000410000-0x0000000000492000-memory.dmp

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memory/4532-15-0x0000000000410000-0x0000000000492000-memory.dmp

Download

memory/4532-5-0x0000000000410000-0x0000000000492000-memory.dmp

Download

memory/4532-18-0x0000000000410000-0x0000000000492000-memory.dmp

Download

memory/4532-19-0x0000000000410000-0x0000000000492000-memory.dmp

Download

memory/4532-20-0x0000000000410000-0x0000000000492000-memory.dmp

Download

memory/4532-21-0x0000000000410000-0x0000000000492000-memory.dmp

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memory/4532-23-0x0000000000410000-0x0000000000492000-memory.dmp

Download

memory/4532-24-0x0000000000410000-0x0000000000492000-memory.dmp

Download

memory/4532-27-0x0000000000410000-0x0000000000492000-memory.dmp

Download

memory/4532-28-0x0000000000410000-0x0000000000492000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads