remcos | 3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97d

General

Target

3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe
Size

2.2MB
MD5

4147d7559e55883dae22ad42793de950
SHA1

3ffe069ccd3a978be55977f11548d041feb99ee0
SHA256

3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97d
SHA512

9c6f6c2bde5c3eb152ed0fc397d1bd9919c2f75dc146b06d8e7b57c9aad4a0e1a573d6fbd6c48d1a6a4f8c15a72032677c0fd5d13c357fceb9818fc98eaf881c
SSDEEP

24576:rD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnXJJJzM:rp7E+QrFUBgq2Snq

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

Executes dropped EXE 2 IoCs

pid	Process
2792	sbietrcl.exe
1360	sbietrcl.exe

Loads dropped DLL 2 IoCs

pid	Process
1744	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe
2792	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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2792 set thread context of 1360	2792	sbietrcl.exe	30

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	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
1744	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe
1744	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe
1744	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe
1744	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe
1744	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe
1744	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe
2792	sbietrcl.exe
2792	sbietrcl.exe
2792	sbietrcl.exe
2792	sbietrcl.exe
2792	sbietrcl.exe
2792	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1744	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe
Token: SeDebugPrivilege	2792	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1360	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1744 wrote to memory of 2792	1744	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe	29
PID 1744 wrote to memory of 2792	1744	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe	29
PID 1744 wrote to memory of 2792	1744	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe	29
PID 1744 wrote to memory of 2792	1744	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe	29
PID 2792 wrote to memory of 1360	2792	sbietrcl.exe	30
PID 2792 wrote to memory of 1360	2792	sbietrcl.exe	30
PID 2792 wrote to memory of 1360	2792	sbietrcl.exe	30
PID 2792 wrote to memory of 1360	2792	sbietrcl.exe	30
PID 2792 wrote to memory of 1360	2792	sbietrcl.exe	30
PID 2792 wrote to memory of 1360	2792	sbietrcl.exe	30
PID 2792 wrote to memory of 1360	2792	sbietrcl.exe	30
PID 2792 wrote to memory of 1360	2792	sbietrcl.exe	30
PID 2792 wrote to memory of 1360	2792	sbietrcl.exe	30
PID 2792 wrote to memory of 1360	2792	sbietrcl.exe	30

C:\Users\Admin\AppData\Local\Temp\3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe
"C:\Users\Admin\AppData\Local\Temp\3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1744
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2792
- - 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:1360

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

System Information Discovery

1

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
603681c234741bcc1f753209f7dda9c3

SHA1
e5826d1d52a619507c0430458666d4086a14720e

SHA256
1558449ddc6261758fe3b545d0ce319535a1ab976b4ca64c6dee3381912dfda3

SHA512
65f5d7b3c1228886d95fcd9a9a84ab78c112fa53fc7a1f5e73f5a0bb9407911d012f1792d29f57ac1e68ecae8ca036ce2ef1b8ce2417cb27921393233c049194

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab78F.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
2.2MB

MD5
ad17b6d16219e5b7cf5f17dbb612b3ea

SHA1
fb1768ea046129848f53766789cc3415ad1ae0cf

SHA256
8d9f2b04d729e0df7c8a74ada0a03240dea24502026b02c2f6b078b7fb92f086

SHA512
df974de4be9a7453cf441c1ed530da4a5733545094923a24482026b758d0bbdc6b96f94a10f2bf6cac7043dd325d9707342887925f5cbcb808d05294c9d4059e

Download Submit
memory/1360-53-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1360-61-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1360-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1360-64-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1360-65-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1360-60-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1360-51-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1360-69-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1360-55-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1360-57-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1360-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1360-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1744-31-0x0000000074DD0000-0x000000007537B000-memory.dmp

Filesize
5.7MB

Download
memory/1744-0-0x0000000074DD1000-0x0000000074DD2000-memory.dmp

Filesize
4KB

Download
memory/1744-13-0x0000000074DD0000-0x000000007537B000-memory.dmp

Filesize
5.7MB

Download
memory/1744-12-0x0000000074DD0000-0x000000007537B000-memory.dmp

Filesize
5.7MB

Download
memory/1744-11-0x0000000074DD0000-0x000000007537B000-memory.dmp

Filesize
5.7MB

Download
memory/1744-10-0x0000000074DD0000-0x000000007537B000-memory.dmp

Filesize
5.7MB

Download
memory/2792-43-0x0000000074DD0000-0x000000007537B000-memory.dmp

Filesize
5.7MB

Download
memory/2792-42-0x0000000074DD0000-0x000000007537B000-memory.dmp

Filesize
5.7MB

Download
memory/2792-32-0x0000000074DD0000-0x000000007537B000-memory.dmp

Filesize
5.7MB

Download
memory/2792-33-0x0000000074DD0000-0x000000007537B000-memory.dmp

Filesize
5.7MB

Download
memory/2792-66-0x0000000074DD0000-0x000000007537B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads