remcos | 2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45

Analysis

max time kernel
149s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
17/05/2024, 10:44

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General

Target
2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe
Size 1.1MB
Sample240517-ms49laeb9z
SHA256 2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45
MD5 33bbd27a00b4160a844a7edf2efef84e
SHA1 c3f19d22898b690d4c98c59416c62ec6e54a39de
SHA512 d4628cdae15273dc0863afa06153d202d8a61ed8d0f9e213c47f029016b81cad7d2d4dc3c115aefbff9c9d0ba6d74e3aa89f09d5fd6226eaa597f0e0328415b7
SSDEEP 24576:b6G5oq6WlY5EQJbBCt598PkfzGwWPEXyqr:bPQrJChIP1q
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos remotehost persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

myumysmeetr.ddns.net:2404
mysweeterbk.ddns.net:2404
meetre1ms.freeddns.org:2404
bbhmeetre1ms.freeddns.org:2404

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-TPT9X3
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-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Duchpovs = "C:\\Users\\Public\\Duchpovs.url"	2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
24	drive.google.com
26	drive.google.com

Script User-Agent 2 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	26	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	28	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4936	2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe
4936	2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4936 wrote to memory of 1748	4936	2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe	96
PID 4936 wrote to memory of 1748	4936	2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe	96
PID 4936 wrote to memory of 1748	4936	2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe	96
PID 4936 wrote to memory of 3808	4936	2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe	97
PID 4936 wrote to memory of 3808	4936	2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe	97
PID 4936 wrote to memory of 3808	4936	2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe	97
PID 4936 wrote to memory of 3808	4936	2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe	97

C:\Users\Admin\AppData\Local\Temp\2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe
"C:\Users\Admin\AppData\Local\Temp\2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4936
- C:\Windows\SysWOW64\extrac32.exe
  C:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe C:\\Users\\Public\\Libraries\\Duchpovs.PIF
  2⤵
  PID:1748
- C:\Windows\SysWOW64\colorcpl.exe
  C:\Windows\System32\colorcpl.exe
  2⤵
  PID:3808

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

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

logs.dat

Path C:\ProgramData\remcos\logs.dat
Size 146B
SHA256 b048d804770c7cc763f00bf35550e58f33481836201bae894abe3e70a93e025e
MD5 f5ce7a8ab15067695a2bc35b5e30fec7
SHA1 699b92b6d4481616580b8bce0f8e9f4b34274c54
SHA512 aec8f4d7d4523008e147522f57e1b74c12e44d9e94a123763057d5e344edac01696f1f1eb15542c78470677e55c8a40c13fd6bbb851d34cbe5ddbc87b45e2167
MD5 SHA1 SHA512

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memory/3808-7-0x0000000004F90000-0x0000000005F90000-memory.dmp

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memory/3808-18-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3808-13-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3808-14-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3808-11-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3808-10-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3808-8-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3808-55-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3808-12-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3808-16-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3808-17-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3808-22-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3808-23-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3808-27-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3808-56-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/3808-31-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4936-1-0x0000000000400000-0x000000000051D000-memory.dmp

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memory/4936-0-0x0000000000800000-0x0000000000801000-memory.dmp

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