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 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-1-5-21-869607583-2483572573-2297019986-1000\Control Panel\International\Geo\Nation	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe
Key value queried	\REGISTRY\USER\S-1-5-21-869607583-2483572573-2297019986-1000\Control Panel\International\Geo\Nation	AboutSettingsHandlers.exe

Executes dropped EXE 4 IoCs

pid	Process
4916	AboutSettingsHandlers.exe
448	AboutSettingsHandlers.exe
4040	AboutSettingsHandlers.exe
4744	AboutSettingsHandlers.exe

AutoIT Executable 7 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/1708-16-0x0000000000BF0000-0x0000000000D79000-memory.dmp	autoit_exe
behavioral2/memory/1708-19-0x0000000000BF0000-0x0000000000D79000-memory.dmp	autoit_exe
behavioral2/memory/1708-22-0x0000000000BF0000-0x0000000000D79000-memory.dmp	autoit_exe
behavioral2/memory/4916-43-0x0000000000640000-0x00000000007C9000-memory.dmp	autoit_exe
behavioral2/memory/4916-45-0x0000000000640000-0x00000000007C9000-memory.dmp	autoit_exe
behavioral2/memory/4040-60-0x0000000000640000-0x00000000007C9000-memory.dmp	autoit_exe
behavioral2/memory/4040-62-0x0000000000640000-0x00000000007C9000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1708 set thread context of 436	1708	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	95
PID 4916 set thread context of 448	4916	AboutSettingsHandlers.exe	111
PID 4040 set thread context of 4744	4040	AboutSettingsHandlers.exe	115

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 6 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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AboutSettingsHandlers.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 3 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
4332	schtasks.exe
3052	schtasks.exe
1524	schtasks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
436	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1708 wrote to memory of 436	1708	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	95
PID 1708 wrote to memory of 436	1708	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	95
PID 1708 wrote to memory of 436	1708	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	95
PID 1708 wrote to memory of 436	1708	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	95
PID 1708 wrote to memory of 436	1708	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	95
PID 1708 wrote to memory of 4332	1708	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	99
PID 1708 wrote to memory of 4332	1708	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	99
PID 1708 wrote to memory of 4332	1708	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	99
PID 4916 wrote to memory of 448	4916	AboutSettingsHandlers.exe	111
PID 4916 wrote to memory of 448	4916	AboutSettingsHandlers.exe	111
PID 4916 wrote to memory of 448	4916	AboutSettingsHandlers.exe	111
PID 4916 wrote to memory of 448	4916	AboutSettingsHandlers.exe	111
PID 4916 wrote to memory of 448	4916	AboutSettingsHandlers.exe	111
PID 4916 wrote to memory of 3052	4916	AboutSettingsHandlers.exe	112
PID 4916 wrote to memory of 3052	4916	AboutSettingsHandlers.exe	112
PID 4916 wrote to memory of 3052	4916	AboutSettingsHandlers.exe	112
PID 4040 wrote to memory of 4744	4040	AboutSettingsHandlers.exe	115
PID 4040 wrote to memory of 4744	4040	AboutSettingsHandlers.exe	115
PID 4040 wrote to memory of 4744	4040	AboutSettingsHandlers.exe	115
PID 4040 wrote to memory of 4744	4040	AboutSettingsHandlers.exe	115
PID 4040 wrote to memory of 4744	4040	AboutSettingsHandlers.exe	115

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:1708
- 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:436
- 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:4332

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:4916
- C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe"
  2⤵
  - Executes dropped EXE
  PID:448
- 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:3052

C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4040
- C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe"
  2⤵
  - Executes dropped EXE
  PID:4744
- 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⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1524

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
662600242b97ccef55b70d909eb0ee19

SHA1
b69eb1c2f943803ad55acde59d2be76a009df551

SHA256
05838e3d722e3de417588c623d6db2ebad07db2d87fe8996afdb0ac9844c927b

SHA512
36eaca0b5a7bb05151511a02e6724162d2cb005b43ae070ce651326efbee723756202ecf19e6518224d51c9d81c8103553b3ba5cdd7ef0da6c1a9416ccdab10c

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

Filesize
79B

MD5
f2a464a0b3fb315b3b16b77624cc6f37

SHA1
6ce61d8a1b387ad6f3ff1bc64431801592e8c7c6

SHA256
6193eacb0d12bd227f4272910626a6507271213f664091d47c9a9d0c6ce22fde

SHA512
09805d6adb4635ebebd9ea793ac833cb49efc3e78b32e1ab3d54af5a2888e97b267b0899a2ea4cd86d1691d87e0df8b48822588d2a68e8b768873ad9f46c7348

Download Submit
memory/436-14-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/436-3-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/436-10-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/436-11-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1708-22-0x0000000000BF0000-0x0000000000D79000-memory.dmp

Filesize
1.5MB

Download
memory/1708-16-0x0000000000BF0000-0x0000000000D79000-memory.dmp

Filesize
1.5MB

Download
memory/1708-19-0x0000000000BF0000-0x0000000000D79000-memory.dmp

Filesize
1.5MB

Download
memory/1708-0-0x0000000000BF0000-0x0000000000D79000-memory.dmp

Filesize
1.5MB

Download
memory/1708-2-0x0000000000DC0000-0x0000000000DC1000-memory.dmp

Filesize
4KB

Download
memory/1708-1-0x0000000000BB0000-0x0000000000BB3000-memory.dmp

Filesize
12KB

Download
memory/1708-15-0x0000000000BB0000-0x0000000000BB3000-memory.dmp

Filesize
12KB

Download
memory/4040-60-0x0000000000640000-0x00000000007C9000-memory.dmp

Filesize
1.5MB

Download
memory/4040-62-0x0000000000640000-0x00000000007C9000-memory.dmp

Filesize
1.5MB

Download
memory/4916-29-0x0000000000640000-0x00000000007C9000-memory.dmp

Filesize
1.5MB

Download
memory/4916-43-0x0000000000640000-0x00000000007C9000-memory.dmp

Filesize
1.5MB

Download
memory/4916-45-0x0000000000640000-0x00000000007C9000-memory.dmp

Filesize
1.5MB

Download
memory/4916-42-0x0000000000DE0000-0x0000000000DE3000-memory.dmp

Filesize
12KB

Download
memory/4916-31-0x0000000000DE0000-0x0000000000DE3000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads