remcos | cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1

General

Target

cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe
Size

1.1MB
MD5

20e60d89e273331ee5c9c55168663c10
SHA1

43f4f20722481704800a8a14eb83c5ee1d7c3d29
SHA256

cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1
SHA512

1fc31a9915419dd6a7c1598eb8e80189fff16448e49835a53fa950e2f62e41f7753b16ff3d2019a1c74fcf5b8d4657c244471918f39c6d82345e07d5dd51d318
SSDEEP

24576:eaTgKwZ14X27uUL3VM0kd+rkhfMsjgkAj2JE06J5N0FS:LTgdZOcuUL3xAx/8b2S7Z0k

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 3 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-1-5-21-3975168204-1612096350-4002976354-1000\Control Panel\International\Geo\Nation	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3975168204-1612096350-4002976354-1000\Control Panel\International\Geo\Nation	AboutSettingsHandlers.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3975168204-1612096350-4002976354-1000\Control Panel\International\Geo\Nation	AboutSettingsHandlers.exe

Executes dropped EXE 4 IoCs

pid	Process
3228	AboutSettingsHandlers.exe
2796	AboutSettingsHandlers.exe
3120	AboutSettingsHandlers.exe
4400	AboutSettingsHandlers.exe

AutoIT Executable 8 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/2228-16-0x0000000000950000-0x0000000000AD9000-memory.dmp	autoit_exe
behavioral2/memory/2228-19-0x0000000000950000-0x0000000000AD9000-memory.dmp	autoit_exe
behavioral2/memory/2228-22-0x0000000000950000-0x0000000000AD9000-memory.dmp	autoit_exe
behavioral2/memory/3228-41-0x0000000000610000-0x0000000000799000-memory.dmp	autoit_exe
behavioral2/memory/3228-43-0x0000000000610000-0x0000000000799000-memory.dmp	autoit_exe
behavioral2/memory/3228-44-0x0000000000610000-0x0000000000799000-memory.dmp	autoit_exe
behavioral2/memory/3120-59-0x0000000000610000-0x0000000000799000-memory.dmp	autoit_exe
behavioral2/memory/3120-61-0x0000000000610000-0x0000000000799000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2228 set thread context of 4924	2228	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe	93
PID 3228 set thread context of 2796	3228	AboutSettingsHandlers.exe	108
PID 3120 set thread context of 4400	3120	AboutSettingsHandlers.exe	113

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 7 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	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.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
3876	schtasks.exe
5800	schtasks.exe
5720	schtasks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4924	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2228 wrote to memory of 4924	2228	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe	93
PID 2228 wrote to memory of 4924	2228	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe	93
PID 2228 wrote to memory of 4924	2228	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe	93
PID 2228 wrote to memory of 4924	2228	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe	93
PID 2228 wrote to memory of 4924	2228	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe	93
PID 2228 wrote to memory of 3876	2228	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe	97
PID 2228 wrote to memory of 3876	2228	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe	97
PID 2228 wrote to memory of 3876	2228	cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe	97
PID 3228 wrote to memory of 2796	3228	AboutSettingsHandlers.exe	108
PID 3228 wrote to memory of 2796	3228	AboutSettingsHandlers.exe	108
PID 3228 wrote to memory of 2796	3228	AboutSettingsHandlers.exe	108
PID 3228 wrote to memory of 2796	3228	AboutSettingsHandlers.exe	108
PID 3228 wrote to memory of 2796	3228	AboutSettingsHandlers.exe	108
PID 3228 wrote to memory of 5800	3228	AboutSettingsHandlers.exe	110
PID 3228 wrote to memory of 5800	3228	AboutSettingsHandlers.exe	110
PID 3228 wrote to memory of 5800	3228	AboutSettingsHandlers.exe	110
PID 3120 wrote to memory of 4400	3120	AboutSettingsHandlers.exe	113
PID 3120 wrote to memory of 4400	3120	AboutSettingsHandlers.exe	113
PID 3120 wrote to memory of 4400	3120	AboutSettingsHandlers.exe	113
PID 3120 wrote to memory of 4400	3120	AboutSettingsHandlers.exe	113
PID 3120 wrote to memory of 4400	3120	AboutSettingsHandlers.exe	113
PID 3120 wrote to memory of 5720	3120	AboutSettingsHandlers.exe	114
PID 3120 wrote to memory of 5720	3120	AboutSettingsHandlers.exe	114
PID 3120 wrote to memory of 5720	3120	AboutSettingsHandlers.exe	114

C:\Users\Admin\AppData\Local\Temp\cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe
"C:\Users\Admin\AppData\Local\Temp\cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Users\Admin\AppData\Local\Temp\cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe
  "C:\Users\Admin\AppData\Local\Temp\cb56004f9171776bc09c3796fbead68b88f75564787c8ee2f03294099d1c78f1.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4924
- 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:3876

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:3228
- C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe"
  2⤵
  - Executes dropped EXE
  PID:2796
- 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:5800

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:3120
- C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe"
  2⤵
  - Executes dropped EXE
  PID:4400
- 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:5720

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
670983004d7dc332b12aac7f497aaea4

SHA1
936db31ea7e08ff8ac72d29221ede27941d23008

SHA256
20819a6f878b22c3321f7657eb18b1dfe90de9648eee7ed9ad41a9476a6df3e0

SHA512
73a38ccf8cb2e645a8ab2e153aed98272e20e5ac53111da796048dbcd25822fbb1e8845b1fe06a8ad87b5d31cd4ffe47f19337c091ed2527c862c74f8ac2a26a

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

Filesize
79B

MD5
2204a33a069170020acecf6def03620b

SHA1
cb7c0ef3b4437161458ddb0fb6f19f4cb33506cc

SHA256
d15e374cf1bc8cfe2d15b106e5b51fa5f863801e9ba8b3a391213a6d19947db7

SHA512
08ef660c1f56d47ffab3ccd0255f023ac4d46a3b4ac1cd56d124e70ff74cb03679e49659b5749aa3beada530736f7c8c71216ca9f2a32f3f01f76517c5ca4e6a

Download Submit
memory/2228-1-0x0000000000930000-0x0000000000933000-memory.dmp

Filesize
12KB

Download
memory/2228-2-0x0000000000B40000-0x0000000000B41000-memory.dmp

Filesize
4KB

Download
memory/2228-0-0x0000000000950000-0x0000000000AD9000-memory.dmp

Filesize
1.5MB

Download
memory/2228-15-0x0000000000930000-0x0000000000933000-memory.dmp

Filesize
12KB

Download
memory/2228-16-0x0000000000950000-0x0000000000AD9000-memory.dmp

Filesize
1.5MB

Download
memory/2228-19-0x0000000000950000-0x0000000000AD9000-memory.dmp

Filesize
1.5MB

Download
memory/2228-22-0x0000000000950000-0x0000000000AD9000-memory.dmp

Filesize
1.5MB

Download
memory/3120-61-0x0000000000610000-0x0000000000799000-memory.dmp

Filesize
1.5MB

Download
memory/3120-59-0x0000000000610000-0x0000000000799000-memory.dmp

Filesize
1.5MB

Download
memory/3228-41-0x0000000000610000-0x0000000000799000-memory.dmp

Filesize
1.5MB

Download
memory/3228-30-0x0000000000E30000-0x0000000000E33000-memory.dmp

Filesize
12KB

Download
memory/3228-29-0x0000000000610000-0x0000000000799000-memory.dmp

Filesize
1.5MB

Download
memory/3228-43-0x0000000000610000-0x0000000000799000-memory.dmp

Filesize
1.5MB

Download
memory/3228-44-0x0000000000610000-0x0000000000799000-memory.dmp

Filesize
1.5MB

Download
memory/4400-50-0x0000000000450000-0x0000000000470000-memory.dmp

Filesize
128KB

Download
memory/4400-57-0x0000000000450000-0x0000000000470000-memory.dmp

Filesize
128KB

Download
memory/4924-14-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4924-11-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4924-10-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4924-4-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads