remcos | 7caf68c89471c61128dc496052deb1bdc26b0a5c98218975cbd76545e483aaac

General

Target

7caf68c89471c61128dc496052deb1bdc26b0a5c98218975cbd76545e483aaac.exe
Size

910KB
MD5

a24a1bbd8b0ce4737d179c924afc6e77
SHA1

40cd5db7d8a1d1c37ee23f90a363bc00dc36ee2a
SHA256

7caf68c89471c61128dc496052deb1bdc26b0a5c98218975cbd76545e483aaac
SHA512

f283a6c54bdf6f5a3a1ece5d90ea64cbc9586f3015dd03bfe0a0fd8966c54bd7f91ab00ce3cc49acc33c9642d99d36943a11c2d0819aa583ec8236cf956e1e91
SSDEEP

12288:kp+rgRNyA55IxJ+feDOa9rZj5XqkJD0QrOod7XxlW91RRz9M7:kpugRNJI1D39dlfGQrFUx9M7

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
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-1-5-21-3342763580-2723508992-2885672917-1000\Control Panel\International\Geo\Nation	7caf68c89471c61128dc496052deb1bdc26b0a5c98218975cbd76545e483aaac.exe

Executes dropped EXE 2 IoCs

pid	Process
3832	sbietrcl.exe
1924	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-1-5-21-3342763580-2723508992-2885672917-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	7caf68c89471c61128dc496052deb1bdc26b0a5c98218975cbd76545e483aaac.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3832 set thread context of 1924	3832	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	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7caf68c89471c61128dc496052deb1bdc26b0a5c98218975cbd76545e483aaac.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
4452	7caf68c89471c61128dc496052deb1bdc26b0a5c98218975cbd76545e483aaac.exe
4452	7caf68c89471c61128dc496052deb1bdc26b0a5c98218975cbd76545e483aaac.exe
4452	7caf68c89471c61128dc496052deb1bdc26b0a5c98218975cbd76545e483aaac.exe
4452	7caf68c89471c61128dc496052deb1bdc26b0a5c98218975cbd76545e483aaac.exe
4452	7caf68c89471c61128dc496052deb1bdc26b0a5c98218975cbd76545e483aaac.exe
4452	7caf68c89471c61128dc496052deb1bdc26b0a5c98218975cbd76545e483aaac.exe
3832	sbietrcl.exe
3832	sbietrcl.exe
3832	sbietrcl.exe
3832	sbietrcl.exe
3832	sbietrcl.exe
3832	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4452	7caf68c89471c61128dc496052deb1bdc26b0a5c98218975cbd76545e483aaac.exe
Token: SeDebugPrivilege	3832	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4452 wrote to memory of 3832	4452	7caf68c89471c61128dc496052deb1bdc26b0a5c98218975cbd76545e483aaac.exe	94
PID 4452 wrote to memory of 3832	4452	7caf68c89471c61128dc496052deb1bdc26b0a5c98218975cbd76545e483aaac.exe	94
PID 4452 wrote to memory of 3832	4452	7caf68c89471c61128dc496052deb1bdc26b0a5c98218975cbd76545e483aaac.exe	94
PID 3832 wrote to memory of 1924	3832	sbietrcl.exe	96
PID 3832 wrote to memory of 1924	3832	sbietrcl.exe	96
PID 3832 wrote to memory of 1924	3832	sbietrcl.exe	96
PID 3832 wrote to memory of 1924	3832	sbietrcl.exe	96
PID 3832 wrote to memory of 1924	3832	sbietrcl.exe	96
PID 3832 wrote to memory of 1924	3832	sbietrcl.exe	96
PID 3832 wrote to memory of 1924	3832	sbietrcl.exe	96
PID 3832 wrote to memory of 1924	3832	sbietrcl.exe	96
PID 3832 wrote to memory of 1924	3832	sbietrcl.exe	96

C:\Users\Admin\AppData\Local\Temp\7caf68c89471c61128dc496052deb1bdc26b0a5c98218975cbd76545e483aaac.exe
"C:\Users\Admin\AppData\Local\Temp\7caf68c89471c61128dc496052deb1bdc26b0a5c98218975cbd76545e483aaac.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:4452
- 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:3832
- - 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:1924

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
919KB

MD5
839ec75070c757715a2deac1e0d8e977

SHA1
7bfcd9df63df4aec7ab26ca2a7e615b10fc4e01f

SHA256
37b672e6bf7f50367503e62d8be1696efda11f89d23a4ea0c1824193082ff795

SHA512
d8708fc529f1bccd178a9285001fc4ca55439be93ec8e9d3792bab8cd9d02992beb6d4b7f336e2a4d94f05b07bc62c60b97055dfbd4a654c5693316428424b06

Download Submit
memory/1924-37-0x00000000005A0000-0x00000000005B7000-memory.dmp

Filesize
92KB

Download
memory/3832-34-0x0000000074DC0000-0x0000000075371000-memory.dmp

Filesize
5.7MB

Download
memory/3832-32-0x0000000074DC0000-0x0000000075371000-memory.dmp

Filesize
5.7MB

Download
memory/3832-41-0x0000000074DC0000-0x0000000075371000-memory.dmp

Filesize
5.7MB

Download
memory/3832-35-0x0000000074DC0000-0x0000000075371000-memory.dmp

Filesize
5.7MB

Download
memory/3832-33-0x0000000074DC0000-0x0000000075371000-memory.dmp

Filesize
5.7MB

Download
memory/4452-31-0x0000000074DC0000-0x0000000075371000-memory.dmp

Filesize
5.7MB

Download
memory/4452-2-0x0000000074DC0000-0x0000000075371000-memory.dmp

Filesize
5.7MB

Download
memory/4452-3-0x0000000074DC0000-0x0000000075371000-memory.dmp

Filesize
5.7MB

Download
memory/4452-20-0x0000000074DC0000-0x0000000075371000-memory.dmp

Filesize
5.7MB

Download
memory/4452-19-0x0000000074DC2000-0x0000000074DC3000-memory.dmp

Filesize
4KB

Download
memory/4452-0-0x0000000074DC2000-0x0000000074DC3000-memory.dmp

Filesize
4KB

Download
memory/4452-7-0x0000000074DC0000-0x0000000075371000-memory.dmp

Filesize
5.7MB

Download
memory/4452-1-0x0000000074DC0000-0x0000000075371000-memory.dmp

Filesize
5.7MB

Download
memory/4452-6-0x0000000074DC0000-0x0000000075371000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads