remcos | cf36f37eb8d3f695dfc8e0f4b0955e0f746df010f8ca0bf2b658e075597fcc36

General

Target

cf36f37eb8d3f695dfc8e0f4b0955e0f746df010f8ca0bf2b658e075597fcc36.exe
Size

978KB
MD5

0c2edddc52b7af556b9e4052ce41f638
SHA1

8db72bc3395f7e42baa709733d81d7c50e9d1dfd
SHA256

cf36f37eb8d3f695dfc8e0f4b0955e0f746df010f8ca0bf2b658e075597fcc36
SHA512

65a8f124b864e83cdb1634c6455411dc3458148a828a1fa02217b9b15bda6dfab125f4a135ca0993ef97baa4852a052fd4a0d8ee5dbee3d80e5d9255c9cb70a8
SSDEEP

12288:Jp+rgRNyA55IxJ+feDOa9rZj5XqkJD0QrOod7XxlW91RRz9FQq:JpugRNJI1D39dlfGQrFUx9FD

Score

10^/10

remcos host discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

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-1-5-21-3975168204-1612096350-4002976354-1000\Control Panel\International\Geo\Nation	cf36f37eb8d3f695dfc8e0f4b0955e0f746df010f8ca0bf2b658e075597fcc36.exe

Executes dropped EXE 4 IoCs

pid	Process
2612	sbietrcl.exe
5988	sbietrcl.exe
2944	sbietrcl.exe
5168	sbietrcl.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

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-1-5-21-3975168204-1612096350-4002976354-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	cf36f37eb8d3f695dfc8e0f4b0955e0f746df010f8ca0bf2b658e075597fcc36.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2612 set thread context of 2944	2612	sbietrcl.exe	101
PID 5988 set thread context of 5168	5988	sbietrcl.exe	102

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 4 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	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cf36f37eb8d3f695dfc8e0f4b0955e0f746df010f8ca0bf2b658e075597fcc36.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
112	cf36f37eb8d3f695dfc8e0f4b0955e0f746df010f8ca0bf2b658e075597fcc36.exe
112	cf36f37eb8d3f695dfc8e0f4b0955e0f746df010f8ca0bf2b658e075597fcc36.exe
112	cf36f37eb8d3f695dfc8e0f4b0955e0f746df010f8ca0bf2b658e075597fcc36.exe
112	cf36f37eb8d3f695dfc8e0f4b0955e0f746df010f8ca0bf2b658e075597fcc36.exe
112	cf36f37eb8d3f695dfc8e0f4b0955e0f746df010f8ca0bf2b658e075597fcc36.exe
112	cf36f37eb8d3f695dfc8e0f4b0955e0f746df010f8ca0bf2b658e075597fcc36.exe
2612	sbietrcl.exe
2612	sbietrcl.exe
2612	sbietrcl.exe
2612	sbietrcl.exe
2612	sbietrcl.exe
2612	sbietrcl.exe
2612	sbietrcl.exe
2612	sbietrcl.exe
2612	sbietrcl.exe
2612	sbietrcl.exe
2612	sbietrcl.exe
2612	sbietrcl.exe
5988	sbietrcl.exe
5988	sbietrcl.exe
5988	sbietrcl.exe
5988	sbietrcl.exe
5988	sbietrcl.exe
5988	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	112	cf36f37eb8d3f695dfc8e0f4b0955e0f746df010f8ca0bf2b658e075597fcc36.exe
Token: SeDebugPrivilege	2612	sbietrcl.exe
Token: SeDebugPrivilege	5988	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2944	sbietrcl.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 5196 wrote to memory of 2612	5196	cmd.exe	97
PID 5196 wrote to memory of 2612	5196	cmd.exe	97
PID 5196 wrote to memory of 2612	5196	cmd.exe	97
PID 112 wrote to memory of 5988	112	cf36f37eb8d3f695dfc8e0f4b0955e0f746df010f8ca0bf2b658e075597fcc36.exe	98
PID 112 wrote to memory of 5988	112	cf36f37eb8d3f695dfc8e0f4b0955e0f746df010f8ca0bf2b658e075597fcc36.exe	98
PID 112 wrote to memory of 5988	112	cf36f37eb8d3f695dfc8e0f4b0955e0f746df010f8ca0bf2b658e075597fcc36.exe	98
PID 2612 wrote to memory of 2944	2612	sbietrcl.exe	101
PID 2612 wrote to memory of 2944	2612	sbietrcl.exe	101
PID 2612 wrote to memory of 2944	2612	sbietrcl.exe	101
PID 2612 wrote to memory of 2944	2612	sbietrcl.exe	101
PID 2612 wrote to memory of 2944	2612	sbietrcl.exe	101
PID 2612 wrote to memory of 2944	2612	sbietrcl.exe	101
PID 2612 wrote to memory of 2944	2612	sbietrcl.exe	101
PID 2612 wrote to memory of 2944	2612	sbietrcl.exe	101
PID 2612 wrote to memory of 2944	2612	sbietrcl.exe	101
PID 5988 wrote to memory of 5168	5988	sbietrcl.exe	102
PID 5988 wrote to memory of 5168	5988	sbietrcl.exe	102
PID 5988 wrote to memory of 5168	5988	sbietrcl.exe	102
PID 5988 wrote to memory of 5168	5988	sbietrcl.exe	102
PID 5988 wrote to memory of 5168	5988	sbietrcl.exe	102
PID 5988 wrote to memory of 5168	5988	sbietrcl.exe	102
PID 5988 wrote to memory of 5168	5988	sbietrcl.exe	102
PID 5988 wrote to memory of 5168	5988	sbietrcl.exe	102
PID 5988 wrote to memory of 5168	5988	sbietrcl.exe	102

C:\Users\Admin\AppData\Local\Temp\cf36f37eb8d3f695dfc8e0f4b0955e0f746df010f8ca0bf2b658e075597fcc36.exe
"C:\Users\Admin\AppData\Local\Temp\cf36f37eb8d3f695dfc8e0f4b0955e0f746df010f8ca0bf2b658e075597fcc36.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:112
- 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:5988
- - 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:5168

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
1⤵
- Suspicious use of WriteProcessMemory
PID:5196
- 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:2612
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2944

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

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\sbietrcl.exe.log

Filesize
400B

MD5
0a9b4592cd49c3c21f6767c2dabda92f

SHA1
f534297527ae5ccc0ecb2221ddeb8e58daeb8b74

SHA256
c7effe9cb81a70d738dee863991afefab040290d4c4b78b4202383bcb9f88fcd

SHA512
6b878df474e5bbfb8e9e265f15a76560c2ef151dcebc6388c82d7f6f86ffaf83f5ade5a09f1842e493cb6c8fd63b0b88d088c728fd725f7139f965a5ee332307

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe

Filesize
987KB

MD5
e01eb8b814276d779c51382afd0cd7ff

SHA1
6a62b7eda670d03acb0491f05dc3b09e4957a115

SHA256
5fea8651031729e8324fb861e400ef4e952b6cdb6b543c8012d7b5e2982043dc

SHA512
40e2437cf0ddd3dd2764467f89c05351a04a6559f26f26ceb8654c3b62e0cc6f18a4f41f8ec0df90ce26939a0ab168009016c61203816ac48b52965598438f8d

Download Submit
memory/112-25-0x0000000074F70000-0x0000000075521000-memory.dmp

Filesize
5.7MB

Download
memory/112-5-0x0000000074F70000-0x0000000075521000-memory.dmp

Filesize
5.7MB

Download
memory/112-6-0x0000000074F70000-0x0000000075521000-memory.dmp

Filesize
5.7MB

Download
memory/112-18-0x0000000074F72000-0x0000000074F73000-memory.dmp

Filesize
4KB

Download
memory/112-19-0x0000000074F70000-0x0000000075521000-memory.dmp

Filesize
5.7MB

Download
memory/112-2-0x0000000074F70000-0x0000000075521000-memory.dmp

Filesize
5.7MB

Download
memory/112-1-0x0000000074F70000-0x0000000075521000-memory.dmp

Filesize
5.7MB

Download
memory/112-28-0x0000000074F70000-0x0000000075521000-memory.dmp

Filesize
5.7MB

Download
memory/112-0-0x0000000074F72000-0x0000000074F73000-memory.dmp

Filesize
4KB

Download
memory/2612-26-0x0000000074F70000-0x0000000075521000-memory.dmp

Filesize
5.7MB

Download
memory/2612-24-0x0000000074F70000-0x0000000075521000-memory.dmp

Filesize
5.7MB

Download
memory/2612-39-0x0000000074F70000-0x0000000075521000-memory.dmp

Filesize
5.7MB

Download
memory/2612-23-0x0000000074F70000-0x0000000075521000-memory.dmp

Filesize
5.7MB

Download
memory/2944-30-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2944-32-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2944-36-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2944-33-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2944-38-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5988-29-0x0000000074F70000-0x0000000075521000-memory.dmp

Filesize
5.7MB

Download
memory/5988-44-0x0000000074F70000-0x0000000075521000-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