remcos | d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308

General

Target

d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe
Size

1.1MB
MD5

7b8bf7f2c6e9b98839bbdafe0690a353
SHA1

e9f8dc02084674dd9f4d5ebb22f5f3ee5c040d04
SHA256

d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308
SHA512

b5cad596eae2e12058f805e021adf15eab04377f811fa06ce7b0ee87a5594f22fcf97b3be1003615ef98770bdc4e471e54b33b7c8e5bcd99d206cac02d0e56b1
SSDEEP

24576:eaTgKwZ14X27uUL3VM0kd+rkhfMsjgkAj2JE06J5N0F6:LTgdZOcuUL3xAx/8b2S7Z0A

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-1-5-21-1279544337-3716153908-718418795-1000\Control Panel\International\Geo\Nation	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe

AutoIT Executable 3 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/5684-16-0x00000000003C0000-0x0000000000549000-memory.dmp	autoit_exe
behavioral2/memory/5684-19-0x00000000003C0000-0x0000000000549000-memory.dmp	autoit_exe
behavioral2/memory/5684-22-0x00000000003C0000-0x0000000000549000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5684 set thread context of 5144	5684	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	93

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	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.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
5180	schtasks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5144	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 5684 wrote to memory of 5144	5684	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	93
PID 5684 wrote to memory of 5144	5684	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	93
PID 5684 wrote to memory of 5144	5684	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	93
PID 5684 wrote to memory of 5144	5684	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	93
PID 5684 wrote to memory of 5144	5684	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	93
PID 5684 wrote to memory of 5180	5684	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	97
PID 5684 wrote to memory of 5180	5684	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	97
PID 5684 wrote to memory of 5180	5684	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	97

C:\Users\Admin\AppData\Local\Temp\d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe
"C:\Users\Admin\AppData\Local\Temp\d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5684
- C:\Users\Admin\AppData\Local\Temp\d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe
  "C:\Users\Admin\AppData\Local\Temp\d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:5144
- 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:5180

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
a11ee79c1a5537d6b8d4b21cfa75b1c4

SHA1
6a8e20bc94026527497572a20596be67a962f2e0

SHA256
766776d79da61eab68cbafacf7341f2787dbdc47337dfc15d55ffadbc748699b

SHA512
52fad667302dd23470fa4ec0065341ff80f58d9edb7072bd1d17d7b5b4cf5ef250ce22a24811a26ece2c92a0782e2b37c5e3a0e3f042365e7e30b56155d87c7b

Download Submit
memory/5144-4-0x0000000000950000-0x0000000000970000-memory.dmp

Filesize
128KB

Download
memory/5144-10-0x0000000000950000-0x0000000000970000-memory.dmp

Filesize
128KB

Download
memory/5144-11-0x0000000000950000-0x0000000000970000-memory.dmp

Filesize
128KB

Download
memory/5144-14-0x0000000000950000-0x0000000000970000-memory.dmp

Filesize
128KB

Download
memory/5684-0-0x00000000003C0000-0x0000000000549000-memory.dmp

Filesize
1.5MB

Download
memory/5684-1-0x0000000000290000-0x0000000000293000-memory.dmp

Filesize
12KB

Download
memory/5684-2-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/5684-15-0x0000000000290000-0x0000000000293000-memory.dmp

Filesize
12KB

Download
memory/5684-16-0x00000000003C0000-0x0000000000549000-memory.dmp

Filesize
1.5MB

Download
memory/5684-19-0x00000000003C0000-0x0000000000549000-memory.dmp

Filesize
1.5MB

Download
memory/5684-22-0x00000000003C0000-0x0000000000549000-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