remcos | ed4750473cade168acd7fb6a70c66fac7b919266d17a6b78d99c693a2a2c758c

General

Target

5784eba1f14d03fe62efdf8bda0a3dbd.exe
Size

471KB
MD5

5784eba1f14d03fe62efdf8bda0a3dbd
SHA1

fa718fa12c9de367502b6770da28d39e4e732b82
SHA256

ed4750473cade168acd7fb6a70c66fac7b919266d17a6b78d99c693a2a2c758c
SHA512

de106a5144125dc92e5481a3aabe08ee51c8c6ba480bd7ccdca50d567ac3235a221da3c5aeeda62c5df8e51d8693a80c77184330befcc7727bff36128a53069e
SSDEEP

12288:PY/N+6lwMD0IrKl0aehawVhG8hN5HplOMoxm6lMO:PY/NLwNhlTehDgIJlOMo46lMO

Score

10^/10

remcos remotehost rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

88.209.254.28:2404

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-ZIMT0C
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
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

Processes:

styvvbvfnw.exestyvvbvfnw.exe

pid process

5100 styvvbvfnw.exe
2880 styvvbvfnw.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
T1081
Suspicious use of SetThreadContext 1 IoCs

Processes:

styvvbvfnw.exe

description pid process target process

PID 5100 set thread context of 2880 5100 styvvbvfnw.exe styvvbvfnw.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

styvvbvfnw.exe

pid process

5100 styvvbvfnw.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

styvvbvfnw.exe

pid process

2880 styvvbvfnw.exe

pid	process
5100	styvvbvfnw.exe
2880	styvvbvfnw.exe

description	pid	process	target process
PID 5100 set thread context of 2880	5100	styvvbvfnw.exe	styvvbvfnw.exe

pid	process
5100	styvvbvfnw.exe

pid	process
2880	styvvbvfnw.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

5784eba1f14d03fe62efdf8bda0a3dbd.exestyvvbvfnw.exe

description	pid	process	target process
PID 2836 wrote to memory of 5100	2836	5784eba1f14d03fe62efdf8bda0a3dbd.exe	styvvbvfnw.exe
PID 2836 wrote to memory of 5100	2836	5784eba1f14d03fe62efdf8bda0a3dbd.exe	styvvbvfnw.exe
PID 2836 wrote to memory of 5100	2836	5784eba1f14d03fe62efdf8bda0a3dbd.exe	styvvbvfnw.exe
PID 5100 wrote to memory of 2880	5100	styvvbvfnw.exe	styvvbvfnw.exe
PID 5100 wrote to memory of 2880	5100	styvvbvfnw.exe	styvvbvfnw.exe
PID 5100 wrote to memory of 2880	5100	styvvbvfnw.exe	styvvbvfnw.exe
PID 5100 wrote to memory of 2880	5100	styvvbvfnw.exe	styvvbvfnw.exe

C:\Users\Admin\AppData\Local\Temp\5784eba1f14d03fe62efdf8bda0a3dbd.exe
"C:\Users\Admin\AppData\Local\Temp\5784eba1f14d03fe62efdf8bda0a3dbd.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2836

C:\Users\Admin\AppData\Local\Temp\styvvbvfnw.exe
"C:\Users\Admin\AppData\Local\Temp\styvvbvfnw.exe" C:\Users\Admin\AppData\Local\Temp\axqasndr.ufk
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:5100

C:\Users\Admin\AppData\Local\Temp\styvvbvfnw.exe
"C:\Users\Admin\AppData\Local\Temp\styvvbvfnw.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:2880

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat
Filesize
570B

MD5
d7ac950aa29372e8dde7673ee8d8c9da

SHA1
e9b6c3990072d8fdb9105c495d2e7915dc196ac2

SHA256
b55aa48fa222fddeee44aa7bf9445d34ab767c90d898abc1062fa839839ff4ec

SHA512
86205aac5fb4572f02297a23611bd648938c6e846597b76ca604c731472e71980c479ada8a1df5422117ff66445ac74dd74c3377070e751783fdc8fae0d517a1

Download Submit
C:\Users\Admin\AppData\Local\Temp\axqasndr.ufk
Filesize
6KB

MD5
d596498aac5ce1ca97cfcd96ec3ee495

SHA1
09a21830a00e83b1e5805605fc995d95e54c852a

SHA256
ccad30f95fed5a8134cbe5ac04b3610500ced34017f89096e4c85ee58744ec3c

SHA512
af42c33cbd22fdcb97610b91965eddec60e95dd692a5c3fd3caaeef3ef5c10c3fe36e3a10b9691a259541535b796646aa6cd9832a09f22845752f06f14aed441

Download Submit
C:\Users\Admin\AppData\Local\Temp\jioxeb.jo
Filesize
496KB

MD5
7e42aad07741284eed7e0f967c0fd67b

SHA1
914b21ea0fed5f1a88c89a2ebdf05c1af4e16b8c

SHA256
2b554654f813c4dd644bb21dfb93ea39a168943a3f0ac73635883e9b158f5680

SHA512
984833eea934f103fc92dd70d59183f39c37aef0a77bcee911e82e8e2b95e126bd12a26b2eda44c334b61ff4c033d6e62192301933c5d7815d505e384dfc41b0

Download Submit
C:\Users\Admin\AppData\Local\Temp\styvvbvfnw.exe
Filesize
5KB

MD5
8694eabecd5eb006702df56dd8ca32aa

SHA1
67c5cce9dc8dc4d12f75eba645e15d30ce89dd2e

SHA256
6308a1eb34327ce7095216db01d27bbec8b5e4d283cee6dee46e4825762ddf09

SHA512
f74e75b51c52cf2a97a4afbf0a3c3af8ed5b461e6b5381d4fc0fee16d4a911d7eab22438b3b0a6e7d0eb75d34324ffc4151fe3c534f7895e805230ad644a1f0e

Download Submit
C:\Users\Admin\AppData\Local\Temp\styvvbvfnw.exe
Filesize
5KB

MD5
8694eabecd5eb006702df56dd8ca32aa

SHA1
67c5cce9dc8dc4d12f75eba645e15d30ce89dd2e

SHA256
6308a1eb34327ce7095216db01d27bbec8b5e4d283cee6dee46e4825762ddf09

SHA512
f74e75b51c52cf2a97a4afbf0a3c3af8ed5b461e6b5381d4fc0fee16d4a911d7eab22438b3b0a6e7d0eb75d34324ffc4151fe3c534f7895e805230ad644a1f0e

Download Submit
C:\Users\Admin\AppData\Local\Temp\styvvbvfnw.exe
Filesize
5KB

MD5
8694eabecd5eb006702df56dd8ca32aa

SHA1
67c5cce9dc8dc4d12f75eba645e15d30ce89dd2e

SHA256
6308a1eb34327ce7095216db01d27bbec8b5e4d283cee6dee46e4825762ddf09

SHA512
f74e75b51c52cf2a97a4afbf0a3c3af8ed5b461e6b5381d4fc0fee16d4a911d7eab22438b3b0a6e7d0eb75d34324ffc4151fe3c534f7895e805230ad644a1f0e

Download Submit
memory/2880-156-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2880-161-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2880-147-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2880-149-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2880-150-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2880-151-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2880-152-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2880-153-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2880-144-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2880-142-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2880-160-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2880-145-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2880-166-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2880-167-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2880-172-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2880-174-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2880-179-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2880-180-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2880-185-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2880-186-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2880-192-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2880-193-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download

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