remcos | 5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158

General

Target

5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe
Size

1.1MB
MD5

7f30e6c7d2f495fc82bd2f4c1f9055db
SHA1

f7878fdb41c01912606c4fee325e66e5af915749
SHA256

5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158
SHA512

98e5d9777ca949a4a3701624bf1bdd0e720ff7cb861cc471aeb970505b59aad0b8e451a44ea1ba8d6f04e84118a3a64207777890d69b8da97a99ba5f30a10fef
SSDEEP

24576:eaTgKwZ14X27uUL3VM0kd+rkhfMsjgkAj2JE06J5N0FP:LTgdZOcuUL3xAx/8b2S7Z0J

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-1-5-21-3920955164-3782810283-1225622749-1000\Control Panel\International\Geo\Nation	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe

Executes dropped EXE 1 IoCs

pid	Process
5576	AboutSettingsHandlers.exe

AutoIT Executable 3 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/5240-16-0x0000000000DD0000-0x0000000000F59000-memory.dmp	autoit_exe
behavioral2/memory/5240-19-0x0000000000DD0000-0x0000000000F59000-memory.dmp	autoit_exe
behavioral2/memory/5240-21-0x0000000000DD0000-0x0000000000F59000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5240 set thread context of 1696	5240	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.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 4 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	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AboutSettingsHandlers.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
4156	schtasks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1696	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 5240 wrote to memory of 1696	5240	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe	93
PID 5240 wrote to memory of 1696	5240	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe	93
PID 5240 wrote to memory of 1696	5240	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe	93
PID 5240 wrote to memory of 1696	5240	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe	93
PID 5240 wrote to memory of 1696	5240	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe	93
PID 5240 wrote to memory of 4156	5240	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe	101
PID 5240 wrote to memory of 4156	5240	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe	101
PID 5240 wrote to memory of 4156	5240	5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe	101

C:\Users\Admin\AppData\Local\Temp\5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe
"C:\Users\Admin\AppData\Local\Temp\5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5240
- C:\Users\Admin\AppData\Local\Temp\5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe
  "C:\Users\Admin\AppData\Local\Temp\5345d8164a2e6bf63a10a7c7a7a56da17e7c5c6e0f128cd9381808b8f1d30158.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:1696
- 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:4156

C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:5576

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
def78629b81bd003e26831da17ef1b97

SHA1
6f25ed17f9f97f6b7eb44c0d6c203610966cfaf4

SHA256
67f062be4e140a5a64c44fce7db828d1549268b8303278a032915a7a59bcfe5b

SHA512
1117baee5b140d8f64bcc065a8c4cd019782366ac05b6b87d47fa8b92c50bf1157fcb99fa46364c7d6ab0aa87f809c526e9f95f426c6f69cfcf343b852cf8bc2

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

Filesize
79B

MD5
7c6c981afc99ef5671da11e0e09f9de4

SHA1
9b8ee0bd3b5eb5aacfdb29e2b1d3e46575f47fab

SHA256
bbea5da5831fc7e6f5b1abcc15f341a31624b2e099d37d3a2aba1f406912328a

SHA512
3f33eaef3002542defc8a676393082181ce89c2430d44805b7e4ad7450f05df3f597416ddc598a744b640175b588f1e10a877ec8dd4454c3ddfdbe824bba05db

Download Submit
memory/1696-14-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1696-4-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1696-10-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1696-11-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/5240-2-0x0000000004210000-0x0000000004211000-memory.dmp

Filesize
4KB

Download
memory/5240-15-0x0000000002800000-0x0000000002803000-memory.dmp

Filesize
12KB

Download
memory/5240-16-0x0000000000DD0000-0x0000000000F59000-memory.dmp

Filesize
1.5MB

Download
memory/5240-19-0x0000000000DD0000-0x0000000000F59000-memory.dmp

Filesize
1.5MB

Download
memory/5240-21-0x0000000000DD0000-0x0000000000F59000-memory.dmp

Filesize
1.5MB

Download
memory/5240-0-0x0000000000DD0000-0x0000000000F59000-memory.dmp

Filesize
1.5MB

Download
memory/5240-1-0x0000000002800000-0x0000000002803000-memory.dmp

Filesize
12KB

Download
memory/5576-27-0x0000000000DC0000-0x0000000000F49000-memory.dmp

Filesize
1.5MB

Download
memory/5576-29-0x0000000000D60000-0x0000000000D63000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads