remcos | ca3bb8d7b3a66189add3fdd0dac2403783af3e4d36a117aad422647e3d7223d9

General

Target

a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe
Size

1.1MB
MD5

86e5451f3367e6580295e46b33d3d8ea
SHA1

b27ac49886349182a8f3cb9cdd7eaed0438ba3a3
SHA256

a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49
SHA512

1b0bfc3df08ef499b2c1d7d24f9e31a027c98592645512d73cd58b50f12d52fda4a1287a7a61e6e7ce63a418db393c3546586ea6bf043e8a9de873a2e0ac85eb
SSDEEP

12288:P2yGdJI1QkIO0QRBajzGStJLkGwiAlVXAjxfkc14c1ZTii1/RwCmcJwAFxrXbqs8:PfOiavjzGStJLXwiyAjxfkcacLOxjA4

Score

10^/10

remcos 10 discovery rat

Malware Config

Extracted

Family

remcos

Version

2.7.0 Pro

Botnet

10

C2

duckdne7832732.duckdns.org:1718

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-RN68N0
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

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3220 set thread context of 2932	3220	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	91

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 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	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2628	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3220	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3220	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2932	RegSvcs.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3220 wrote to memory of 2628	3220	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	89
PID 3220 wrote to memory of 2628	3220	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	89
PID 3220 wrote to memory of 2628	3220	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	89
PID 3220 wrote to memory of 2932	3220	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	91
PID 3220 wrote to memory of 2932	3220	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	91
PID 3220 wrote to memory of 2932	3220	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	91
PID 3220 wrote to memory of 2932	3220	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	91
PID 3220 wrote to memory of 2932	3220	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	91
PID 3220 wrote to memory of 2932	3220	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	91
PID 3220 wrote to memory of 2932	3220	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	91
PID 3220 wrote to memory of 2932	3220	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	91
PID 3220 wrote to memory of 2932	3220	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	91
PID 3220 wrote to memory of 2932	3220	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	91

C:\Users\Admin\AppData\Local\Temp\a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe
"C:\Users\Admin\AppData\Local\Temp\a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3220
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VuYmmGpWGSWON" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF01D.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2628
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:2932

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmpF01D.tmp

Filesize
1KB

MD5
8e33e249acee6c18ede27f12fef11acf

SHA1
87729d90cc6393ae34ad8a058ab5774e42620b54

SHA256
33d86bde8ea7996a2c9247ac3b956e9aa7f3ff648edaed2de1f1707b3b2940b6

SHA512
f72f94aafec569c2899511d22a6c8381c72fb1648c58dd7d9e4161b802a8478611e53ee079a42e73cfd8ac3f478cc96a3fbfa7edd43c08a19e8dddaef1cc5299

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

Filesize
74B

MD5
2b12c64f1113ef3ec22f94ab7b370530

SHA1
25f382025c2595a2a61d65663a1e85aed02c20a0

SHA256
10ef24982bb96435ff9caee4d975c3e92348fc1927bdd4115bafa1d948bb98e7

SHA512
209c59c484ee727441808a2dcba25ac1607394f4a8902627b258d0f5c48b70da51a37f69c31293cba369f91f47c2589075d1ce70000a95b70c0bd87101d92edf

Download Submit
memory/2932-27-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2932-20-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2932-23-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2932-24-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2932-19-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2932-16-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3220-5-0x0000000004C30000-0x0000000004C3A000-memory.dmp

Filesize
40KB

Download
memory/3220-6-0x0000000074870000-0x0000000075020000-memory.dmp

Filesize
7.7MB

Download
memory/3220-10-0x0000000074870000-0x0000000075020000-memory.dmp

Filesize
7.7MB

Download
memory/3220-11-0x0000000006500000-0x0000000006572000-memory.dmp

Filesize
456KB

Download
memory/3220-12-0x0000000008B00000-0x0000000008B26000-memory.dmp

Filesize
152KB

Download
memory/3220-8-0x0000000005020000-0x000000000502A000-memory.dmp

Filesize
40KB

Download
memory/3220-7-0x0000000004EA0000-0x0000000004EF6000-memory.dmp

Filesize
344KB

Download
memory/3220-9-0x000000007487E000-0x000000007487F000-memory.dmp

Filesize
4KB

Download
memory/3220-0-0x000000007487E000-0x000000007487F000-memory.dmp

Filesize
4KB

Download
memory/3220-4-0x0000000004C60000-0x0000000004CF2000-memory.dmp

Filesize
584KB

Download
memory/3220-3-0x0000000005170000-0x0000000005714000-memory.dmp

Filesize
5.6MB

Download
memory/3220-25-0x0000000074870000-0x0000000075020000-memory.dmp

Filesize
7.7MB

Download
memory/3220-2-0x0000000004B20000-0x0000000004BBC000-memory.dmp

Filesize
624KB

Download
memory/3220-1-0x0000000000080000-0x0000000000192000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads