remcos | 198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31

General

Target

198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe
Size

1011KB
MD5

fb0b57e2384fc19739bb45994ce5463a
SHA1

79906a1307e8ed7543541f68f10a944bc7d9629c
SHA256

198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31
SHA512

db0ecf99a2ef138ebc3c36eec92ea23feb44c82bc3640a1517b55742e33ec1ee6332d5bd818a01bbd7e44c54cf9e752cd5b40db5a8ced40bab02fff17ee3fd4e
SSDEEP

12288:Up+rgRNyA55IxJ+feDOa9rZj5XqkJD0QrOod7XxlW91RRzwAY3AzCk:UpugRNJI1D39dlfGQrFUxwAeAzCk

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-1-5-21-3920955164-3782810283-1225622749-1000\Control Panel\International\Geo\Nation	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe

Executes dropped EXE 2 IoCs

pid	Process
6024	sbietrcl.exe
2576	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-1-5-21-3920955164-3782810283-1225622749-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 6024 set thread context of 2576	6024	sbietrcl.exe	104

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	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2724	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe
2724	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe
2724	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe
2724	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe
2724	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe
2724	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe
6024	sbietrcl.exe
6024	sbietrcl.exe
6024	sbietrcl.exe
6024	sbietrcl.exe
6024	sbietrcl.exe
6024	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2724	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe
Token: SeDebugPrivilege	6024	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2724 wrote to memory of 6024	2724	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe	103
PID 2724 wrote to memory of 6024	2724	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe	103
PID 2724 wrote to memory of 6024	2724	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe	103
PID 6024 wrote to memory of 2576	6024	sbietrcl.exe	104
PID 6024 wrote to memory of 2576	6024	sbietrcl.exe	104
PID 6024 wrote to memory of 2576	6024	sbietrcl.exe	104
PID 6024 wrote to memory of 2576	6024	sbietrcl.exe	104
PID 6024 wrote to memory of 2576	6024	sbietrcl.exe	104
PID 6024 wrote to memory of 2576	6024	sbietrcl.exe	104
PID 6024 wrote to memory of 2576	6024	sbietrcl.exe	104
PID 6024 wrote to memory of 2576	6024	sbietrcl.exe	104
PID 6024 wrote to memory of 2576	6024	sbietrcl.exe	104

C:\Users\Admin\AppData\Local\Temp\198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe
"C:\Users\Admin\AppData\Local\Temp\198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.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:2724
- 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:6024
- - 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:2576

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
1020KB

MD5
836622faa77f8af244f9a067a8c2eee6

SHA1
504f1fc822c84dd0ad251438093611f638cc2ae4

SHA256
d2fd4967e908a65de3d61889d281055a387a7a1ce461a47eecc315d3fb6433f1

SHA512
fda04c7b69ea73c0e2564d61fa26e0570e50ce577ebc3841f7d356e778c8149b1de79db1a9e372c6373ce30ccad0c528cef996357c95e257f8a1338e6c2fc320

Download Submit
memory/2576-37-0x0000000000720000-0x0000000000737000-memory.dmp

Filesize
92KB

Download
memory/2724-19-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/2724-5-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/2724-6-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/2724-18-0x0000000075492000-0x0000000075493000-memory.dmp

Filesize
4KB

Download
memory/2724-0-0x0000000075492000-0x0000000075493000-memory.dmp

Filesize
4KB

Download
memory/2724-2-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/2724-30-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/2724-1-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/6024-32-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/6024-31-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/6024-33-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/6024-34-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/6024-41-0x0000000075490000-0x0000000075A41000-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