remcos | fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d

General

Target

fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe
Size

1.1MB
MD5

08d4a690d8a5f57b996465457d0f4775
SHA1

8059aa4a63ee35a7505dd55f9a4d8f63f02bfa78
SHA256

fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d
SHA512

8c08c78371e4d645a58aa32ca1549eecdc9466300212cd0b06fcda4d3a4470f2c67003ac5ad93180f2c7e34479b2a00d127aac7507d05304ee81725d5bff2739
SSDEEP

24576:eaTgKwZ14X27uUL3VM0kd+rkhfMsjgkAj2JE06J5N0Fj:LTgdZOcuUL3xAx/8b2S7Z05

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 2 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-1-5-21-3342763580-2723508992-2885672917-1000\Control Panel\International\Geo\Nation	AboutSettingsHandlers.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3342763580-2723508992-2885672917-1000\Control Panel\International\Geo\Nation	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe

Executes dropped EXE 2 IoCs

pid	Process
5512	AboutSettingsHandlers.exe
1076	AboutSettingsHandlers.exe

AutoIT Executable 5 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/5812-16-0x00000000004B0000-0x0000000000639000-memory.dmp	autoit_exe
behavioral2/memory/5812-19-0x00000000004B0000-0x0000000000639000-memory.dmp	autoit_exe
behavioral2/memory/5812-22-0x00000000004B0000-0x0000000000639000-memory.dmp	autoit_exe
behavioral2/memory/5512-39-0x00000000002D0000-0x0000000000459000-memory.dmp	autoit_exe
behavioral2/memory/5512-41-0x00000000002D0000-0x0000000000459000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 5812 set thread context of 4692	5812	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe	92
PID 5512 set thread context of 1076	5512	AboutSettingsHandlers.exe	100

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 5 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	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AboutSettingsHandlers.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
5264	schtasks.exe
6012	schtasks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4692	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 5812 wrote to memory of 4692	5812	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe	92
PID 5812 wrote to memory of 4692	5812	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe	92
PID 5812 wrote to memory of 4692	5812	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe	92
PID 5812 wrote to memory of 4692	5812	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe	92
PID 5812 wrote to memory of 4692	5812	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe	92
PID 5812 wrote to memory of 5264	5812	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe	96
PID 5812 wrote to memory of 5264	5812	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe	96
PID 5812 wrote to memory of 5264	5812	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe	96
PID 5512 wrote to memory of 1076	5512	AboutSettingsHandlers.exe	100
PID 5512 wrote to memory of 1076	5512	AboutSettingsHandlers.exe	100
PID 5512 wrote to memory of 1076	5512	AboutSettingsHandlers.exe	100
PID 5512 wrote to memory of 1076	5512	AboutSettingsHandlers.exe	100
PID 5512 wrote to memory of 1076	5512	AboutSettingsHandlers.exe	100
PID 5512 wrote to memory of 6012	5512	AboutSettingsHandlers.exe	103
PID 5512 wrote to memory of 6012	5512	AboutSettingsHandlers.exe	103
PID 5512 wrote to memory of 6012	5512	AboutSettingsHandlers.exe	103

C:\Users\Admin\AppData\Local\Temp\fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe
"C:\Users\Admin\AppData\Local\Temp\fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5812
- C:\Users\Admin\AppData\Local\Temp\fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe
  "C:\Users\Admin\AppData\Local\Temp\fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4692
- 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:5264

C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5512
- C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe"
  2⤵
  - Executes dropped EXE
  PID:1076
- 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:6012

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\UIMgrBroker\AboutSettingsHandlers.exe

Filesize
1.1MB

MD5
bb8e7f664f836d869de5c1c49d118390

SHA1
fae8c900238b05893d414307c0619ab9e78b7a9e

SHA256
90f2ca56143a13546f69f05db4ca983f79f3dc73e23034c9754485e0b9fa9c02

SHA512
28f6aad6c3341b4a7276a7ea8be637ce68f233f9502bb1eb82c8507d58b246e86b907be5f627c5316d551e6dd91dc39c31b9a5f77bbe9669a9d724eda65cecf2

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

Filesize
79B

MD5
b924f9b7b8eb53ace58ac2ec4e3132a8

SHA1
315a300cf5e4058495e11cb291a5835ec6d6849b

SHA256
cd2792393009744b24e98ff20d2e1f9716de785f54ba77433ff7e25fa3ddb457

SHA512
a20a54c354a42291df31ea284e85060e789c7b1c6fd3a50008671807b58c7c60832a83f2e33872e15c3dfb919a57b2a3667163057e6a4b33fa391bd52cb42021

Download Submit
memory/1076-36-0x0000000000510000-0x0000000000530000-memory.dmp

Filesize
128KB

Download
memory/1076-28-0x0000000000510000-0x0000000000530000-memory.dmp

Filesize
128KB

Download
memory/4692-11-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4692-4-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4692-14-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4692-10-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/5512-25-0x00000000002D0000-0x0000000000459000-memory.dmp

Filesize
1.5MB

Download
memory/5512-27-0x0000000001630000-0x0000000001633000-memory.dmp

Filesize
12KB

Download
memory/5512-38-0x0000000001630000-0x0000000001633000-memory.dmp

Filesize
12KB

Download
memory/5512-39-0x00000000002D0000-0x0000000000459000-memory.dmp

Filesize
1.5MB

Download
memory/5512-41-0x00000000002D0000-0x0000000000459000-memory.dmp

Filesize
1.5MB

Download
memory/5812-16-0x00000000004B0000-0x0000000000639000-memory.dmp

Filesize
1.5MB

Download
memory/5812-19-0x00000000004B0000-0x0000000000639000-memory.dmp

Filesize
1.5MB

Download
memory/5812-22-0x00000000004B0000-0x0000000000639000-memory.dmp

Filesize
1.5MB

Download
memory/5812-15-0x00000000006E0000-0x00000000006E3000-memory.dmp

Filesize
12KB

Download
memory/5812-0-0x00000000004B0000-0x0000000000639000-memory.dmp

Filesize
1.5MB

Download
memory/5812-2-0x0000000001F30000-0x0000000001F31000-memory.dmp

Filesize
4KB

Download
memory/5812-1-0x00000000006E0000-0x00000000006E3000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads