remcos | ec57a5693533b024615c157ec0e3867b2eb73a65a12c20501ef8ff00ffd8f65c

Analysis

max time kernel
139s
max time network
154s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:13

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General

Target

7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe
Size

1.8MB
MD5

3a219547f510eb35578328582fee3d73
SHA1

346bbbcff1e8a30cdb4538f1215b1ac45efb4960
SHA256

7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd
SHA512

029b085ac2318bd10058472bbe80f2080a672107a8c9819c1ffc17a63b3035e2821e123a95f4cc48d44ef9fdab7ce8a8e2f0c54bca378925b47481aeee02e8af
SSDEEP

24576:ND39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH67:NF+QrFUBgq25eKu67

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
2344	sbietrcl.exe
656	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2144	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2344 set thread context of 656	2344	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	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.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
2144	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe
2144	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe
2144	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe
2144	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe
2144	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe
2144	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe
2344	sbietrcl.exe
2344	sbietrcl.exe
2344	sbietrcl.exe
2344	sbietrcl.exe
2344	sbietrcl.exe
2344	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2144	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe
Token: SeDebugPrivilege	2344	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
656	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2144 wrote to memory of 2344	2144	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe	30
PID 2144 wrote to memory of 2344	2144	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe	30
PID 2144 wrote to memory of 2344	2144	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe	30
PID 2144 wrote to memory of 2344	2144	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe	30
PID 2344 wrote to memory of 656	2344	sbietrcl.exe	31
PID 2344 wrote to memory of 656	2344	sbietrcl.exe	31
PID 2344 wrote to memory of 656	2344	sbietrcl.exe	31
PID 2344 wrote to memory of 656	2344	sbietrcl.exe	31
PID 2344 wrote to memory of 656	2344	sbietrcl.exe	31
PID 2344 wrote to memory of 656	2344	sbietrcl.exe	31
PID 2344 wrote to memory of 656	2344	sbietrcl.exe	31
PID 2344 wrote to memory of 656	2344	sbietrcl.exe	31
PID 2344 wrote to memory of 656	2344	sbietrcl.exe	31
PID 2344 wrote to memory of 656	2344	sbietrcl.exe	31

C:\Users\Admin\AppData\Local\Temp\7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe
"C:\Users\Admin\AppData\Local\Temp\7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.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:2144
- 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:2344
- - 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:656

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

Replay Monitor

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Downloads

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

Filesize
342B

MD5
1eb65b4e644e6a7f679ef04f74ef29ab

SHA1
8b24c53d64cfb76453739b97169a19730f1eeae3

SHA256
c1176ab4cc3fe10a13f9f500a80c8574cc4433f592cb287bf73b7771fc2bc840

SHA512
301785d26a76df9c56056ff7bd6d020a1f0c60da7e19c71b52156e4e6e6b534f3e3839a783e9252fd2f5ef991c9cf816fe4353ba1822a81bc2f75b25fee7715d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab3DDB.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
1.8MB

MD5
35cd5742dffb44987fd8c92e22ce1ec9

SHA1
8ed35500d68e119b7e088ed97b50b2d5a27391bd

SHA256
72cb4f67789a93faccd58d3092f3127f515e7120addd03ff4715e48e3ae26871

SHA512
973458435f94d0c2f7e4125f6a003db1f9df6bc27f24741a8f2a37cebc3e7cc2ee86024a9cedad7e0933696520b599df1930c666d2b9c8b4460c3133a16ef162

Download Submit
memory/656-57-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/656-61-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/656-67-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/656-62-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/656-63-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/656-58-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/656-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/656-46-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/656-54-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/656-52-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/656-50-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/656-48-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/656-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2144-0-0x0000000074C01000-0x0000000074C02000-memory.dmp

Filesize
4KB

Download
memory/2144-12-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/2144-1-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/2144-11-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/2144-30-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/2344-41-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/2344-40-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/2344-31-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/2344-64-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download