remcos | f782d90dba9f9e8fb3e059c734cf362b38e79697a02b2e5dbca25e156b6ba8c5

General

Target

f782d90dba9f9e8fb3e059c734cf362b38e79697a02b2e5dbca25e156b6ba8c5.exe
Size

2.0MB
MD5

de8ace350bf5f9ed386aaf2474ead949
SHA1

9af2d597b8e8bf2daa029ff41e2c1712607edc7e
SHA256

f782d90dba9f9e8fb3e059c734cf362b38e79697a02b2e5dbca25e156b6ba8c5
SHA512

51caa8b3422022f439ba43be5fa152e261bb5948d2ab0d38dc66513eeed4b98875438337c5053581f24e8beba1dfacca8956fc6eb548ab16d2f9148932b2e508
SSDEEP

24576:7D39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPj8/j73AneLKJJ+G:7p7E+QrFUBgq29

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

Host

C2

213.183.58.19:4000

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
read.dat
keylog_flag
false
keylog_folder
CastC
keylog_path
%AppData%
mouse_option
false
mutex
remcos_sccafsoidz
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
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

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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	f782d90dba9f9e8fb3e059c734cf362b38e79697a02b2e5dbca25e156b6ba8c5.exe

Executes dropped EXE 2 IoCs

pid	Process
2736	sbietrcl.exe
4944	sbietrcl.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	f782d90dba9f9e8fb3e059c734cf362b38e79697a02b2e5dbca25e156b6ba8c5.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2736 set thread context of 4944	2736	sbietrcl.exe	96

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 2 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	f782d90dba9f9e8fb3e059c734cf362b38e79697a02b2e5dbca25e156b6ba8c5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
4272	f782d90dba9f9e8fb3e059c734cf362b38e79697a02b2e5dbca25e156b6ba8c5.exe
4272	f782d90dba9f9e8fb3e059c734cf362b38e79697a02b2e5dbca25e156b6ba8c5.exe
4272	f782d90dba9f9e8fb3e059c734cf362b38e79697a02b2e5dbca25e156b6ba8c5.exe
4272	f782d90dba9f9e8fb3e059c734cf362b38e79697a02b2e5dbca25e156b6ba8c5.exe
4272	f782d90dba9f9e8fb3e059c734cf362b38e79697a02b2e5dbca25e156b6ba8c5.exe
4272	f782d90dba9f9e8fb3e059c734cf362b38e79697a02b2e5dbca25e156b6ba8c5.exe
2736	sbietrcl.exe
2736	sbietrcl.exe
2736	sbietrcl.exe
2736	sbietrcl.exe
2736	sbietrcl.exe
2736	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4272	f782d90dba9f9e8fb3e059c734cf362b38e79697a02b2e5dbca25e156b6ba8c5.exe
Token: SeDebugPrivilege	2736	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4272 wrote to memory of 2736	4272	f782d90dba9f9e8fb3e059c734cf362b38e79697a02b2e5dbca25e156b6ba8c5.exe	95
PID 4272 wrote to memory of 2736	4272	f782d90dba9f9e8fb3e059c734cf362b38e79697a02b2e5dbca25e156b6ba8c5.exe	95
PID 4272 wrote to memory of 2736	4272	f782d90dba9f9e8fb3e059c734cf362b38e79697a02b2e5dbca25e156b6ba8c5.exe	95
PID 2736 wrote to memory of 4944	2736	sbietrcl.exe	96
PID 2736 wrote to memory of 4944	2736	sbietrcl.exe	96
PID 2736 wrote to memory of 4944	2736	sbietrcl.exe	96
PID 2736 wrote to memory of 4944	2736	sbietrcl.exe	96
PID 2736 wrote to memory of 4944	2736	sbietrcl.exe	96
PID 2736 wrote to memory of 4944	2736	sbietrcl.exe	96
PID 2736 wrote to memory of 4944	2736	sbietrcl.exe	96
PID 2736 wrote to memory of 4944	2736	sbietrcl.exe	96
PID 2736 wrote to memory of 4944	2736	sbietrcl.exe	96

C:\Users\Admin\AppData\Local\Temp\f782d90dba9f9e8fb3e059c734cf362b38e79697a02b2e5dbca25e156b6ba8c5.exe
"C:\Users\Admin\AppData\Local\Temp\f782d90dba9f9e8fb3e059c734cf362b38e79697a02b2e5dbca25e156b6ba8c5.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4272
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2736
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
    3⤵
    - Executes dropped EXE
    PID:4944

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

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\Microsoft\Windows\Templates\sbietrcl.exe

Filesize
2.1MB

MD5
e13766f36e25ca36a214a01289dbec86

SHA1
fb0584f9699476560c7798d4a53719384593b912

SHA256
db769d3276da755a2a044813fb0b112b314677824c60bdb38900c59a5422897d

SHA512
2027114be5f299db39677d84e87f38648d379c2f1c778c4e05d1e3c83fc35760e5047f63c4301645e5493c47c0c41c5ce4fbfddbb44dc11ed0fa6d3c33376bd7

Download Submit
memory/2736-41-0x0000000074790000-0x0000000074D41000-memory.dmp

Filesize
5.7MB

Download
memory/2736-34-0x0000000074790000-0x0000000074D41000-memory.dmp

Filesize
5.7MB

Download
memory/2736-33-0x0000000074790000-0x0000000074D41000-memory.dmp

Filesize
5.7MB

Download
memory/2736-32-0x0000000074790000-0x0000000074D41000-memory.dmp

Filesize
5.7MB

Download
memory/2736-31-0x0000000074790000-0x0000000074D41000-memory.dmp

Filesize
5.7MB

Download
memory/4272-5-0x0000000074790000-0x0000000074D41000-memory.dmp

Filesize
5.7MB

Download
memory/4272-19-0x0000000074790000-0x0000000074D41000-memory.dmp

Filesize
5.7MB

Download
memory/4272-30-0x0000000074790000-0x0000000074D41000-memory.dmp

Filesize
5.7MB

Download
memory/4272-18-0x0000000074792000-0x0000000074793000-memory.dmp

Filesize
4KB

Download
memory/4272-6-0x0000000074790000-0x0000000074D41000-memory.dmp

Filesize
5.7MB

Download
memory/4272-0-0x0000000074792000-0x0000000074793000-memory.dmp

Filesize
4KB

Download
memory/4272-2-0x0000000074790000-0x0000000074D41000-memory.dmp

Filesize
5.7MB

Download
memory/4272-1-0x0000000074790000-0x0000000074D41000-memory.dmp

Filesize
5.7MB

Download
memory/4944-37-0x0000000000370000-0x0000000000387000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads