remcos | add6234329d65ae878b6112d7d63d6641b842d28c0fa2fa5fbbb09a1b835bc0c

Analysis

max time kernel
140s
max time network
152s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:08

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General

Target

2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe
Size

1.9MB
MD5

b9867e22e55a07a407707cab1812c4cf
SHA1

d2a0e5476d102309a84319b95fa223aee8be2be9
SHA256

2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366
SHA512

afc0dea22b1c6efd6c801b38cdce7df0693df5da59f046f90808698eada1f630224d524dd918505ecaa672c3f106d893d30828d05a4966a22f02b6328a63d859
SSDEEP

24576:yD39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6L:yF+QrFUBgq25eKu6L

Score

10^/10

remcos host discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

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

Executes dropped EXE 2 IoCs

pid	Process
2748	sbietrcl.exe
2900	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2248	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2748 set thread context of 2900	2748	sbietrcl.exe	31

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	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.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
2248	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe
2248	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe
2248	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe
2248	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe
2248	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe
2248	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe
2748	sbietrcl.exe
2748	sbietrcl.exe
2748	sbietrcl.exe
2748	sbietrcl.exe
2748	sbietrcl.exe
2748	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2248	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe
Token: SeDebugPrivilege	2748	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2900	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2248 wrote to memory of 2748	2248	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe	30
PID 2248 wrote to memory of 2748	2248	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe	30
PID 2248 wrote to memory of 2748	2248	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe	30
PID 2248 wrote to memory of 2748	2248	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe	30
PID 2748 wrote to memory of 2900	2748	sbietrcl.exe	31
PID 2748 wrote to memory of 2900	2748	sbietrcl.exe	31
PID 2748 wrote to memory of 2900	2748	sbietrcl.exe	31
PID 2748 wrote to memory of 2900	2748	sbietrcl.exe	31
PID 2748 wrote to memory of 2900	2748	sbietrcl.exe	31
PID 2748 wrote to memory of 2900	2748	sbietrcl.exe	31
PID 2748 wrote to memory of 2900	2748	sbietrcl.exe	31
PID 2748 wrote to memory of 2900	2748	sbietrcl.exe	31
PID 2748 wrote to memory of 2900	2748	sbietrcl.exe	31
PID 2748 wrote to memory of 2900	2748	sbietrcl.exe	31

C:\Users\Admin\AppData\Local\Temp\2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe
"C:\Users\Admin\AppData\Local\Temp\2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.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:2248
- 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:2748
- - 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:2900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabBD85.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
1.9MB

MD5
cdbaa74b2b059edd7ea4d7fa78ea415e

SHA1
fe17aaa222e148f1748ccddb2aa9271b0c400088

SHA256
445c67cdb63baddfddfd20edbfa87eeb6b7e57bbdae2cd8e8a97cb0e83d82b82

SHA512
43238024f9a0c048328be7fc85f820f7e8a4b67753a98e1a820f84c890ac36270b73d49095ab5763143d3c2c3b4e0308867832d4c6689e918f36379492201539

Download Submit
memory/2248-31-0x0000000074270000-0x000000007481B000-memory.dmp

Filesize
5.7MB

Download
memory/2248-1-0x0000000074270000-0x000000007481B000-memory.dmp

Filesize
5.7MB

Download
memory/2248-2-0x0000000074270000-0x000000007481B000-memory.dmp

Filesize
5.7MB

Download
memory/2248-10-0x0000000074270000-0x000000007481B000-memory.dmp

Filesize
5.7MB

Download
memory/2248-11-0x0000000074270000-0x000000007481B000-memory.dmp

Filesize
5.7MB

Download
memory/2248-23-0x0000000074270000-0x000000007481B000-memory.dmp

Filesize
5.7MB

Download
memory/2248-0-0x0000000074271000-0x0000000074272000-memory.dmp

Filesize
4KB

Download
memory/2748-41-0x0000000074270000-0x000000007481B000-memory.dmp

Filesize
5.7MB

Download
memory/2748-33-0x0000000074270000-0x000000007481B000-memory.dmp

Filesize
5.7MB

Download
memory/2748-32-0x0000000074270000-0x000000007481B000-memory.dmp

Filesize
5.7MB

Download
memory/2748-30-0x0000000074270000-0x000000007481B000-memory.dmp

Filesize
5.7MB

Download
memory/2748-42-0x0000000074270000-0x000000007481B000-memory.dmp

Filesize
5.7MB

Download
memory/2748-58-0x0000000074270000-0x000000007481B000-memory.dmp

Filesize
5.7MB

Download
memory/2900-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-53-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2900-51-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-55-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-64-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-63-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-60-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-59-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-67-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download