remcos | f4823b05534473785a9b18be86059a622ebebef574e6741b839845065d4da2ff

General

Target

f4823b05534473785a9b18be86059a622ebebef574e6741b839845065d4da2ff.exe
Size

1.1MB
MD5

dfd6c0e95060bc696ed82390adda4538
SHA1

4773db6c45a2e1c0641d7fd0b94f40df888340d2
SHA256

f4823b05534473785a9b18be86059a622ebebef574e6741b839845065d4da2ff
SHA512

48afa5c90441ba790ba782a8cacac89060f3c55d43cd39d225b3b32be2d80b7ec2e9b9241462293d140ac11e2efcebea720532f0bab2dba1e1a9eb47a8d038ce
SSDEEP

24576:eaTgKwZ14X27uUL3VM0kd+rkhfMsjgkAj2JE06J5N0FU:LTgdZOcuUL3xAx/8b2S7Z0e

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

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/memory/2336-21-0x0000000001320000-0x00000000014A9000-memory.dmp	autoit_exe
behavioral1/memory/2336-26-0x0000000001320000-0x00000000014A9000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2336 set thread context of 2708	2336	f4823b05534473785a9b18be86059a622ebebef574e6741b839845065d4da2ff.exe	30

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	f4823b05534473785a9b18be86059a622ebebef574e6741b839845065d4da2ff.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f4823b05534473785a9b18be86059a622ebebef574e6741b839845065d4da2ff.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
2924	schtasks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2708	f4823b05534473785a9b18be86059a622ebebef574e6741b839845065d4da2ff.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2336 wrote to memory of 2708	2336	f4823b05534473785a9b18be86059a622ebebef574e6741b839845065d4da2ff.exe	30
PID 2336 wrote to memory of 2708	2336	f4823b05534473785a9b18be86059a622ebebef574e6741b839845065d4da2ff.exe	30
PID 2336 wrote to memory of 2708	2336	f4823b05534473785a9b18be86059a622ebebef574e6741b839845065d4da2ff.exe	30
PID 2336 wrote to memory of 2708	2336	f4823b05534473785a9b18be86059a622ebebef574e6741b839845065d4da2ff.exe	30
PID 2336 wrote to memory of 2708	2336	f4823b05534473785a9b18be86059a622ebebef574e6741b839845065d4da2ff.exe	30
PID 2336 wrote to memory of 2708	2336	f4823b05534473785a9b18be86059a622ebebef574e6741b839845065d4da2ff.exe	30
PID 2336 wrote to memory of 2924	2336	f4823b05534473785a9b18be86059a622ebebef574e6741b839845065d4da2ff.exe	32
PID 2336 wrote to memory of 2924	2336	f4823b05534473785a9b18be86059a622ebebef574e6741b839845065d4da2ff.exe	32
PID 2336 wrote to memory of 2924	2336	f4823b05534473785a9b18be86059a622ebebef574e6741b839845065d4da2ff.exe	32
PID 2336 wrote to memory of 2924	2336	f4823b05534473785a9b18be86059a622ebebef574e6741b839845065d4da2ff.exe	32

C:\Users\Admin\AppData\Local\Temp\f4823b05534473785a9b18be86059a622ebebef574e6741b839845065d4da2ff.exe
"C:\Users\Admin\AppData\Local\Temp\f4823b05534473785a9b18be86059a622ebebef574e6741b839845065d4da2ff.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2336
- C:\Users\Admin\AppData\Local\Temp\f4823b05534473785a9b18be86059a622ebebef574e6741b839845065d4da2ff.exe
  "C:\Users\Admin\AppData\Local\Temp\f4823b05534473785a9b18be86059a622ebebef574e6741b839845065d4da2ff.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2708
- 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:2924

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

System Information Discovery

1

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
9bbb9387568f035e6887eb4e600efd0c

SHA1
7feb63d4ada3acd50d907f77b86f51c9b671535c

SHA256
264879ab9531d158bcddebf15e3716e997279144f42116a5fbeff81f6d85b846

SHA512
56f30fc95c42d6a18832aad72735afbcef32cf6ee2c2b210901e4f818425247b1e46f294cc9b9d3b47dfd7ce060a3fe31afa4ace8e52f3ced6bb6e8576fc83c2

Download Submit
memory/2336-18-0x00000000028B0000-0x0000000002A39000-memory.dmp

Filesize
1.5MB

Download
memory/2336-0-0x0000000001320000-0x00000000014A9000-memory.dmp

Filesize
1.5MB

Download
memory/2336-2-0x00000000000C0000-0x00000000000C1000-memory.dmp

Filesize
4KB

Download
memory/2336-1-0x0000000000070000-0x0000000000073000-memory.dmp

Filesize
12KB

Download
memory/2336-26-0x0000000001320000-0x00000000014A9000-memory.dmp

Filesize
1.5MB

Download
memory/2336-21-0x0000000001320000-0x00000000014A9000-memory.dmp

Filesize
1.5MB

Download
memory/2708-11-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2708-19-0x0000000001320000-0x00000000014A9000-memory.dmp

Filesize
1.5MB

Download
memory/2708-20-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/2708-15-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/2708-14-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/2708-3-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/2708-5-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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