remcos | 798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34

General

Target

798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe
Size

1.1MB
MD5

bb7ddf35ddc719934858d0f0fb8d754c
SHA1

d9e8e45c53c1225e76181a27c396031a6b51311d
SHA256

798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34
SHA512

d5de4e075f06acc67ff985814b2b2397f418e674c40e7da26e46696abebc0c6e21e59c498d388fba8490efa08f8a28c8b6c5df8c0bea34aab7ed565d33599c1d
SSDEEP

24576:eaTgKwZ14X27uUL3VM0kd+rkhfMsjgkAj2JE06J5N0FG:LTgdZOcuUL3xAx/8b2S7Z0M

Score

10^/10

remcos chinemerem discovery rat

Malware Config

Extracted

Family

remcos

Version

2.2.2 Pro

Botnet

chinemerem

C2

remcoss.onmypc.org:3765

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
r-8ET8H0
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

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-1-5-21-3218366390-1258052702-4267193707-1000\Control Panel\International\Geo\Nation	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe

AutoIT Executable 3 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/4884-15-0x0000000000FE0000-0x0000000001169000-memory.dmp	autoit_exe
behavioral2/memory/4884-18-0x0000000000FE0000-0x0000000001169000-memory.dmp	autoit_exe
behavioral2/memory/4884-21-0x0000000000FE0000-0x0000000001169000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4884 set thread context of 4188	4884	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe	96

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 3 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	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.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
2988	schtasks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4188	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4884 wrote to memory of 4188	4884	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe	96
PID 4884 wrote to memory of 4188	4884	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe	96
PID 4884 wrote to memory of 4188	4884	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe	96
PID 4884 wrote to memory of 4188	4884	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe	96
PID 4884 wrote to memory of 4188	4884	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe	96
PID 4884 wrote to memory of 2988	4884	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe	100
PID 4884 wrote to memory of 2988	4884	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe	100
PID 4884 wrote to memory of 2988	4884	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe	100

C:\Users\Admin\AppData\Local\Temp\798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe
"C:\Users\Admin\AppData\Local\Temp\798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4884
- C:\Users\Admin\AppData\Local\Temp\798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe
  "C:\Users\Admin\AppData\Local\Temp\798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4188
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn SystemSettingsAdminFlows /tr "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2988

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

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Downloads

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

Filesize
79B

MD5
57c23fd385e7c05b2bc5fa083920ae10

SHA1
49b360dd02c80ea6bf82e9f9443ee960cf54bef5

SHA256
2d5421a65d39c0f5aea1b5aaa8d88fd441928d67ba3b8c477121ad74bda7b4fc

SHA512
331649eeae6eae5dcbe3a296fd6de77b822d3bb237912a3298c80d6f5aed177b3d883b7d73722346e4c0191444c144111637236805ac1e2d06ec3993d53007c0

Download Submit
memory/4188-3-0x00000000004C0000-0x00000000004E0000-memory.dmp

Filesize
128KB

Download
memory/4188-10-0x00000000004C0000-0x00000000004E0000-memory.dmp

Filesize
128KB

Download
memory/4188-11-0x00000000004C0000-0x00000000004E0000-memory.dmp

Filesize
128KB

Download
memory/4188-14-0x00000000004C0000-0x00000000004E0000-memory.dmp

Filesize
128KB

Download
memory/4884-0-0x0000000000FE0000-0x0000000001169000-memory.dmp

Filesize
1.5MB

Download
memory/4884-1-0x0000000000E70000-0x0000000000E73000-memory.dmp

Filesize
12KB

Download
memory/4884-2-0x0000000001240000-0x0000000001241000-memory.dmp

Filesize
4KB

Download
memory/4884-15-0x0000000000FE0000-0x0000000001169000-memory.dmp

Filesize
1.5MB

Download
memory/4884-18-0x0000000000FE0000-0x0000000001169000-memory.dmp

Filesize
1.5MB

Download
memory/4884-21-0x0000000000FE0000-0x0000000001169000-memory.dmp

Filesize
1.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads