remcos | b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5

General

Target

b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5.exe
Size

1.9MB
MD5

0da0e77164c09ad3dba1c49ee7440154
SHA1

61f2f7c5eaf0959c51622ebf89ea5e07e5d12f90
SHA256

b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5
SHA512

98e275667d9184cbeeb556df709bcda97f484d278ba8a6421c87a0b71b079a282e67b9c3fca01a339cf261d4d26996863581e6dc537b61a6711e923812623ff3
SSDEEP

24576:vD39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6z:vF+QrFUBgq25eKu6z

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

Executes dropped EXE 2 IoCs

pid	Process
2508	sbietrcl.exe
2512	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2284	b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2508 set thread context of 2512	2508	sbietrcl.exe	29

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	b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5.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
2284	b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5.exe
2284	b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5.exe
2284	b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5.exe
2284	b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5.exe
2284	b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5.exe
2284	b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5.exe
2508	sbietrcl.exe
2508	sbietrcl.exe
2508	sbietrcl.exe
2508	sbietrcl.exe
2508	sbietrcl.exe
2508	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2284	b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5.exe
Token: SeDebugPrivilege	2508	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2512	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2284 wrote to memory of 2508	2284	b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5.exe	28
PID 2284 wrote to memory of 2508	2284	b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5.exe	28
PID 2284 wrote to memory of 2508	2284	b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5.exe	28
PID 2284 wrote to memory of 2508	2284	b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5.exe	28
PID 2508 wrote to memory of 2512	2508	sbietrcl.exe	29
PID 2508 wrote to memory of 2512	2508	sbietrcl.exe	29
PID 2508 wrote to memory of 2512	2508	sbietrcl.exe	29
PID 2508 wrote to memory of 2512	2508	sbietrcl.exe	29
PID 2508 wrote to memory of 2512	2508	sbietrcl.exe	29
PID 2508 wrote to memory of 2512	2508	sbietrcl.exe	29
PID 2508 wrote to memory of 2512	2508	sbietrcl.exe	29
PID 2508 wrote to memory of 2512	2508	sbietrcl.exe	29
PID 2508 wrote to memory of 2512	2508	sbietrcl.exe	29
PID 2508 wrote to memory of 2512	2508	sbietrcl.exe	29

C:\Users\Admin\AppData\Local\Temp\b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5.exe
"C:\Users\Admin\AppData\Local\Temp\b40deefc4ca51f2995419de278a49f77ff9979b51088bc393ae1fcebc5abfef5.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:2284
- 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:2508
- - 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:2512

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

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Downloads

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

Filesize
342B

MD5
910bc741bc2f0c1d7c9b433b8a9b960e

SHA1
83f16018f01616c373da66c4219100c7b23161f3

SHA256
26750c5d518bd64f93948f3616914e4cee65e7d32452f7c793b1da1df7a5af67

SHA512
ee015583557b7b3192f0d1ddeea536b2a0f3262d7b2f4d0d260b5dba37b0762f2164fef6898998f01a542f9ce43f87144692463c3155551680b2c16fb735ca6c

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab757E.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
441194d168f900182f0b1fa9b6854204

SHA1
c4b00703419be5e76888e058efa8fe4c2dbcd564

SHA256
79a45b115014426e74913d9373bed1ddd61c501d767d8ca21297918a4e4faa92

SHA512
c49335ebafbacbb9f6b25e38c638b6b3d2fda6130c581b86367abbf4c2a36fc19154b00acdafe5e9ca15d50db18dc97e4b7682324b817f01f19aae4cc331c8ba

Download Submit
memory/2284-0-0x0000000074221000-0x0000000074222000-memory.dmp

Filesize
4KB

Download
memory/2284-1-0x0000000074220000-0x00000000747CB000-memory.dmp

Filesize
5.7MB

Download
memory/2284-2-0x0000000074220000-0x00000000747CB000-memory.dmp

Filesize
5.7MB

Download
memory/2284-12-0x0000000074220000-0x00000000747CB000-memory.dmp

Filesize
5.7MB

Download
memory/2284-13-0x0000000074220000-0x00000000747CB000-memory.dmp

Filesize
5.7MB

Download
memory/2284-25-0x0000000074220000-0x00000000747CB000-memory.dmp

Filesize
5.7MB

Download
memory/2284-31-0x0000000074220000-0x00000000747CB000-memory.dmp

Filesize
5.7MB

Download
memory/2508-43-0x0000000074220000-0x00000000747CB000-memory.dmp

Filesize
5.7MB

Download
memory/2508-42-0x0000000074220000-0x00000000747CB000-memory.dmp

Filesize
5.7MB

Download
memory/2508-41-0x0000000074220000-0x00000000747CB000-memory.dmp

Filesize
5.7MB

Download
memory/2508-44-0x0000000074220000-0x00000000747CB000-memory.dmp

Filesize
5.7MB

Download
memory/2508-57-0x0000000074220000-0x00000000747CB000-memory.dmp

Filesize
5.7MB

Download
memory/2512-50-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2512-52-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2512-54-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2512-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2512-46-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2512-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2512-48-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2512-62-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2512-60-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2512-58-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2512-63-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads