remcos | dbd6aab0a5ef80bec52ef212eb3800e71a3ed2e4891443ea7d80e774295452df

General

Target

d2c5dc7c3ae85102be70e9876c15ab70N.exe
Size

2.1MB
MD5

d2c5dc7c3ae85102be70e9876c15ab70
SHA1

ed07769ac41af457f4dda01e77f57e0028d37a9d
SHA256

dbd6aab0a5ef80bec52ef212eb3800e71a3ed2e4891443ea7d80e774295452df
SHA512

c53a75189b8a6d8870697889e8fb77a367fad7401449878098d937ec4f5ea7ea421f49924b970fb49f5061cf7e9e86ff7ba554930a47f39fcf88bbd65b7879ba
SSDEEP

24576:kD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnej7:kp7E+QrFUBgq2SnS

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

Executes dropped EXE 2 IoCs

pid	Process
836	sbietrcl.exe
2684	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2296	d2c5dc7c3ae85102be70e9876c15ab70N.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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	d2c5dc7c3ae85102be70e9876c15ab70N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 836 set thread context of 2684	836	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	d2c5dc7c3ae85102be70e9876c15ab70N.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
2296	d2c5dc7c3ae85102be70e9876c15ab70N.exe
2296	d2c5dc7c3ae85102be70e9876c15ab70N.exe
2296	d2c5dc7c3ae85102be70e9876c15ab70N.exe
2296	d2c5dc7c3ae85102be70e9876c15ab70N.exe
2296	d2c5dc7c3ae85102be70e9876c15ab70N.exe
2296	d2c5dc7c3ae85102be70e9876c15ab70N.exe
836	sbietrcl.exe
836	sbietrcl.exe
836	sbietrcl.exe
836	sbietrcl.exe
836	sbietrcl.exe
836	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2296	d2c5dc7c3ae85102be70e9876c15ab70N.exe
Token: SeDebugPrivilege	836	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2684	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2296 wrote to memory of 836	2296	d2c5dc7c3ae85102be70e9876c15ab70N.exe	28
PID 2296 wrote to memory of 836	2296	d2c5dc7c3ae85102be70e9876c15ab70N.exe	28
PID 2296 wrote to memory of 836	2296	d2c5dc7c3ae85102be70e9876c15ab70N.exe	28
PID 2296 wrote to memory of 836	2296	d2c5dc7c3ae85102be70e9876c15ab70N.exe	28
PID 836 wrote to memory of 2684	836	sbietrcl.exe	29
PID 836 wrote to memory of 2684	836	sbietrcl.exe	29
PID 836 wrote to memory of 2684	836	sbietrcl.exe	29
PID 836 wrote to memory of 2684	836	sbietrcl.exe	29
PID 836 wrote to memory of 2684	836	sbietrcl.exe	29
PID 836 wrote to memory of 2684	836	sbietrcl.exe	29
PID 836 wrote to memory of 2684	836	sbietrcl.exe	29
PID 836 wrote to memory of 2684	836	sbietrcl.exe	29
PID 836 wrote to memory of 2684	836	sbietrcl.exe	29
PID 836 wrote to memory of 2684	836	sbietrcl.exe	29

C:\Users\Admin\AppData\Local\Temp\d2c5dc7c3ae85102be70e9876c15ab70N.exe
"C:\Users\Admin\AppData\Local\Temp\d2c5dc7c3ae85102be70e9876c15ab70N.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:2296
- 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:836
- - 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:2684

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\Local\Temp\CabA229.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
2.1MB

MD5
16e357ed9a390b110bd6a6ab86a7d80c

SHA1
1e89d3515c1f9c2c730b2aaedc71f832fce4b8d7

SHA256
75087772206aba9a2389b95c5b10b5f77cf647c5175a83a3151a522bbe1c3b2f

SHA512
63b709727cb9098b3e0afc51632c665aba8e7ddeaf3abcdf8e23ec17e2c171c06f333959767daef08a8f5e31cc762e5b4570f99384490fb35668b491c7bb6326

Download Submit
memory/836-55-0x00000000745A0000-0x0000000074B4B000-memory.dmp

Filesize
5.7MB

Download
memory/836-30-0x00000000745A0000-0x0000000074B4B000-memory.dmp

Filesize
5.7MB

Download
memory/836-39-0x00000000745A0000-0x0000000074B4B000-memory.dmp

Filesize
5.7MB

Download
memory/836-38-0x00000000745A0000-0x0000000074B4B000-memory.dmp

Filesize
5.7MB

Download
memory/2296-11-0x00000000745A0000-0x0000000074B4B000-memory.dmp

Filesize
5.7MB

Download
memory/2296-10-0x00000000745A0000-0x0000000074B4B000-memory.dmp

Filesize
5.7MB

Download
memory/2296-1-0x00000000745A0000-0x0000000074B4B000-memory.dmp

Filesize
5.7MB

Download
memory/2296-2-0x00000000745A0000-0x0000000074B4B000-memory.dmp

Filesize
5.7MB

Download
memory/2296-0-0x00000000745A1000-0x00000000745A2000-memory.dmp

Filesize
4KB

Download
memory/2296-29-0x00000000745A0000-0x0000000074B4B000-memory.dmp

Filesize
5.7MB

Download
memory/2684-48-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2684-65-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2684-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2684-40-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2684-46-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2684-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2684-52-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2684-57-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2684-61-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2684-56-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2684-62-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2684-50-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads