remcos | 89be31d7396e456350106ec7218adec388e701d682480c9ede5b5fa3fa985e9c

General

Target

145fb2e85a50469d202cbcdcd8fcd0d0N.exe
Size

2.1MB
MD5

145fb2e85a50469d202cbcdcd8fcd0d0
SHA1

d5d63b7bc9368f964b87e513a5ca7d5c9bbce0f7
SHA256

89be31d7396e456350106ec7218adec388e701d682480c9ede5b5fa3fa985e9c
SHA512

7d3bc0cb51ecc9ccb4d62679bdf7095ebd1233174e63ddfd664f507efb0a554d3a1fc2b8c3d1e8b6ba693811ebbd0b86821d0f77465825686bd30cec468f2795
SSDEEP

24576:xD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4+cZN:xp7E+QrFUBgq29n

Score

10^/10

remcos host credential_access 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
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

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-1-5-21-1403246978-718555486-3105247137-1000\Control Panel\International\Geo\Nation	145fb2e85a50469d202cbcdcd8fcd0d0N.exe

Executes dropped EXE 2 IoCs

pid	Process
208	sbietrcl.exe
4088	sbietrcl.exe

Reads user/profile data of web browsers 2 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

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-1-5-21-1403246978-718555486-3105247137-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	145fb2e85a50469d202cbcdcd8fcd0d0N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 208 set thread context of 4088	208	sbietrcl.exe	92

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 3 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	145fb2e85a50469d202cbcdcd8fcd0d0N.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
3480	145fb2e85a50469d202cbcdcd8fcd0d0N.exe
3480	145fb2e85a50469d202cbcdcd8fcd0d0N.exe
3480	145fb2e85a50469d202cbcdcd8fcd0d0N.exe
3480	145fb2e85a50469d202cbcdcd8fcd0d0N.exe
3480	145fb2e85a50469d202cbcdcd8fcd0d0N.exe
3480	145fb2e85a50469d202cbcdcd8fcd0d0N.exe
208	sbietrcl.exe
208	sbietrcl.exe
208	sbietrcl.exe
208	sbietrcl.exe
208	sbietrcl.exe
208	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3480	145fb2e85a50469d202cbcdcd8fcd0d0N.exe
Token: SeDebugPrivilege	208	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4088	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3480 wrote to memory of 208	3480	145fb2e85a50469d202cbcdcd8fcd0d0N.exe	89
PID 3480 wrote to memory of 208	3480	145fb2e85a50469d202cbcdcd8fcd0d0N.exe	89
PID 3480 wrote to memory of 208	3480	145fb2e85a50469d202cbcdcd8fcd0d0N.exe	89
PID 208 wrote to memory of 4088	208	sbietrcl.exe	92
PID 208 wrote to memory of 4088	208	sbietrcl.exe	92
PID 208 wrote to memory of 4088	208	sbietrcl.exe	92
PID 208 wrote to memory of 4088	208	sbietrcl.exe	92
PID 208 wrote to memory of 4088	208	sbietrcl.exe	92
PID 208 wrote to memory of 4088	208	sbietrcl.exe	92
PID 208 wrote to memory of 4088	208	sbietrcl.exe	92
PID 208 wrote to memory of 4088	208	sbietrcl.exe	92
PID 208 wrote to memory of 4088	208	sbietrcl.exe	92

C:\Users\Admin\AppData\Local\Temp\145fb2e85a50469d202cbcdcd8fcd0d0N.exe
"C:\Users\Admin\AppData\Local\Temp\145fb2e85a50469d202cbcdcd8fcd0d0N.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:3480
- 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:208
- - 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:4088

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\Roaming\Microsoft\Windows\Templates\sbietrcl.exe

Filesize
2.1MB

MD5
34a7f9bd6b563c3e4f2d50b3a5ed4a5a

SHA1
8de98d2d434dffe37e9fd57e19d72e5a7b9723d0

SHA256
6c69c4934fda849465c79546c9c01efaccdd006c4541ade2ce5fd27141161bdd

SHA512
9b8039fe74d3be2b04ea16ee11544dbb457a3c54c6a374b89d849dfe85aa06f277ffca7fa0d3a11f17e932b7686b4dc51f90e415b779172b40e56436e48b7311

Download Submit
memory/208-29-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/208-44-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/208-32-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/208-31-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/208-30-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/3480-6-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/3480-28-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/3480-0-0x0000000074F12000-0x0000000074F13000-memory.dmp

Filesize
4KB

Download
memory/3480-5-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/3480-2-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/3480-1-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/4088-33-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4088-36-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4088-37-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4088-40-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4088-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4088-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4088-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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