remcos | f6ad4da75d8e9e6438479894e84c68cf3d0c89a4100e5c3704d63149407ea253

General

Target

f6ad4da75d8e9e6438479894e84c68cf3d0c89a4100e5c3704d63149407ea253.exe
Size

1.9MB
MD5

085a185c2c68665cd64a2da01c45d895
SHA1

ba5e11c757829d273f7b5ee7f62b094c133645e3
SHA256

f6ad4da75d8e9e6438479894e84c68cf3d0c89a4100e5c3704d63149407ea253
SHA512

dc8d8ed6086ebd91ebd30fa6fdad77a5163eda496b81e46879858fe86042f6794ceefa6f9e2cbace396b174809d1c734c54f361d19d6d028856d1bb7017a8f2c
SSDEEP

24576:FD39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6h:FF+QrFUBgq25eKu6h

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-1-5-21-814918696-1585701690-3140955116-1000\Control Panel\International\Geo\Nation	f6ad4da75d8e9e6438479894e84c68cf3d0c89a4100e5c3704d63149407ea253.exe

Executes dropped EXE 2 IoCs

pid	Process
3092	sbietrcl.exe
4764	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-1-5-21-814918696-1585701690-3140955116-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	f6ad4da75d8e9e6438479894e84c68cf3d0c89a4100e5c3704d63149407ea253.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3092 set thread context of 4764	3092	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	f6ad4da75d8e9e6438479894e84c68cf3d0c89a4100e5c3704d63149407ea253.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
3232	f6ad4da75d8e9e6438479894e84c68cf3d0c89a4100e5c3704d63149407ea253.exe
3232	f6ad4da75d8e9e6438479894e84c68cf3d0c89a4100e5c3704d63149407ea253.exe
3232	f6ad4da75d8e9e6438479894e84c68cf3d0c89a4100e5c3704d63149407ea253.exe
3232	f6ad4da75d8e9e6438479894e84c68cf3d0c89a4100e5c3704d63149407ea253.exe
3232	f6ad4da75d8e9e6438479894e84c68cf3d0c89a4100e5c3704d63149407ea253.exe
3232	f6ad4da75d8e9e6438479894e84c68cf3d0c89a4100e5c3704d63149407ea253.exe
3092	sbietrcl.exe
3092	sbietrcl.exe
3092	sbietrcl.exe
3092	sbietrcl.exe
3092	sbietrcl.exe
3092	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3232	f6ad4da75d8e9e6438479894e84c68cf3d0c89a4100e5c3704d63149407ea253.exe
Token: SeDebugPrivilege	3092	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3232 wrote to memory of 3092	3232	f6ad4da75d8e9e6438479894e84c68cf3d0c89a4100e5c3704d63149407ea253.exe	94
PID 3232 wrote to memory of 3092	3232	f6ad4da75d8e9e6438479894e84c68cf3d0c89a4100e5c3704d63149407ea253.exe	94
PID 3232 wrote to memory of 3092	3232	f6ad4da75d8e9e6438479894e84c68cf3d0c89a4100e5c3704d63149407ea253.exe	94
PID 3092 wrote to memory of 4764	3092	sbietrcl.exe	96
PID 3092 wrote to memory of 4764	3092	sbietrcl.exe	96
PID 3092 wrote to memory of 4764	3092	sbietrcl.exe	96
PID 3092 wrote to memory of 4764	3092	sbietrcl.exe	96
PID 3092 wrote to memory of 4764	3092	sbietrcl.exe	96
PID 3092 wrote to memory of 4764	3092	sbietrcl.exe	96
PID 3092 wrote to memory of 4764	3092	sbietrcl.exe	96
PID 3092 wrote to memory of 4764	3092	sbietrcl.exe	96
PID 3092 wrote to memory of 4764	3092	sbietrcl.exe	96

C:\Users\Admin\AppData\Local\Temp\f6ad4da75d8e9e6438479894e84c68cf3d0c89a4100e5c3704d63149407ea253.exe
"C:\Users\Admin\AppData\Local\Temp\f6ad4da75d8e9e6438479894e84c68cf3d0c89a4100e5c3704d63149407ea253.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:3232
- 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:3092
- - 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:4764

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
1.9MB

MD5
63bc6a56a31d860c518c49f29bb8fb99

SHA1
4d125280de001c270c07cb7a0297dc064e89e54c

SHA256
fde6d231cfae5b9cfd0a97146e11668edec0c9c9bc69e7ce4fbb9667c988a0d4

SHA512
743df30f872fef40eab1ed7054b6710e228e563fbf8c8b9b8ecc41a9515395375b3eababd1cd69a07833865bf60c1f004b9ada0996b3cb68ef64c04cbb5d5b74

Download Submit
memory/3092-41-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/3092-34-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/3092-33-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/3092-32-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/3092-31-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/3232-5-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/3232-19-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/3232-30-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/3232-18-0x00000000755A2000-0x00000000755A3000-memory.dmp

Filesize
4KB

Download
memory/3232-6-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/3232-0-0x00000000755A2000-0x00000000755A3000-memory.dmp

Filesize
4KB

Download
memory/3232-2-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/3232-1-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/4764-37-0x00000000001C0000-0x00000000001D7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads