remcos | 21831de43575b5f0884692b4a1cdf0c3afbbe3249e9662519941c467d648db55

General

Target

91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe
Size

34.0MB
MD5

246f3cc2b81de718feebdff2bea43a79
SHA1

9c11fcc7bf3d676f1446eac8931022ae86a5e83e
SHA256

91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815
SHA512

3c48b88e116127cde459ae5adcc82f33874badb694a7596ee52772e26edcfc37387f30ef49b7f147537108457f268e769be9eb4003638d62d181257e9b426ff8
SSDEEP

6144:BMb3M3dJE65qnh2DxwA8E4TF6tuCPpbMsgLB3B4JZEHteUK+Jv7UtH5:E3565qWiVAtuCPpbhgN3RH0UKc4t

Score

10^/10

remcos temmer-marbles discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

2.7.2 Pro

Botnet

TEMMER-MARBLES

C2

www.stellionlab.com:5004

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-BRE55N
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
wikipedia;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vlc = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\VideoLAN\\vlc.exe\""	91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4448 set thread context of 4060	4448	91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe	99

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4448	91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe
4448	91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4448	91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4060	91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4448 wrote to memory of 2420	4448	91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe	98
PID 4448 wrote to memory of 2420	4448	91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe	98
PID 4448 wrote to memory of 2420	4448	91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe	98
PID 4448 wrote to memory of 4060	4448	91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe	99
PID 4448 wrote to memory of 4060	4448	91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe	99
PID 4448 wrote to memory of 4060	4448	91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe	99
PID 4448 wrote to memory of 4060	4448	91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe	99
PID 4448 wrote to memory of 4060	4448	91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe	99
PID 4448 wrote to memory of 4060	4448	91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe	99
PID 4448 wrote to memory of 4060	4448	91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe	99
PID 4448 wrote to memory of 4060	4448	91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe	99
PID 4448 wrote to memory of 4060	4448	91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe	99
PID 4448 wrote to memory of 4060	4448	91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe	99

C:\Users\Admin\AppData\Local\Temp\91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe
"C:\Users\Admin\AppData\Local\Temp\91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4448
- C:\Users\Admin\AppData\Local\Temp\91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe
  "C:\Users\Admin\AppData\Local\Temp\91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe"
  2⤵
  PID:2420
- C:\Users\Admin\AppData\Local\Temp\91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe
  "C:\Users\Admin\AppData\Local\Temp\91c4e3f799e541b7b5b770172628b7310c48c0da8b8f73c1239b24d9b39f2815.exe"
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:4060

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\remcos\logs.dat

Filesize
74B

MD5
0913f0da05274402185831faef2e6e29

SHA1
c62ee283c855ac51ac495b3375454b4e44af92f3

SHA256
5edae8ee9d702873e5c6bbf58a3cf822983c8f3b9b73f212ddbc1eb597454330

SHA512
ad4edb190d8191526f489f4fa0e1e5b673a0b9cba62ece3c073f6aa6c15f6b9ca3b9e72b138f1bb44601cd41ea948349926a6088ceeb95db8319873a43da3f4d

Download Submit
memory/4060-11-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4060-22-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4060-15-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4060-19-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4060-18-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4060-14-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4448-4-0x0000000004E90000-0x0000000004E9A000-memory.dmp

Filesize
40KB

Download
memory/4448-8-0x0000000005FD0000-0x0000000006012000-memory.dmp

Filesize
264KB

Download
memory/4448-10-0x0000000006010000-0x000000000602C000-memory.dmp

Filesize
112KB

Download
memory/4448-7-0x0000000074C40000-0x00000000753F0000-memory.dmp

Filesize
7.7MB

Download
memory/4448-6-0x0000000074C4E000-0x0000000074C4F000-memory.dmp

Filesize
4KB

Download
memory/4448-5-0x0000000074C40000-0x00000000753F0000-memory.dmp

Filesize
7.7MB

Download
memory/4448-0-0x0000000074C4E000-0x0000000074C4F000-memory.dmp

Filesize
4KB

Download
memory/4448-3-0x0000000004D00000-0x0000000004D92000-memory.dmp

Filesize
584KB

Download
memory/4448-20-0x0000000074C40000-0x00000000753F0000-memory.dmp

Filesize
7.7MB

Download
memory/4448-2-0x00000000051D0000-0x0000000005774000-memory.dmp

Filesize
5.6MB

Download
memory/4448-1-0x0000000000220000-0x00000000002D2000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads