remcos | 056cdf4a67164ded09385efec0912ccbb1c365c151d01b0a3633de1c4d410a18

General

Target

rea.exe
Size

469KB
MD5

29b622980bc32771d8cac127961b0ba5
SHA1

895a13abd7ef4f8e0ea9cc1526350eccf1934b27
SHA256

056cdf4a67164ded09385efec0912ccbb1c365c151d01b0a3633de1c4d410a18
SHA512

7410b6413f4177d44ad3b55652ca57e3d622c806e423286a3ae90dd8026edb3552d304fde3c2b82ee0b8ef3dc4ba0e4a185d0d03be96d9fa5f8be7347592db95
SSDEEP

12288:umnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSvn9:WiLJbpI7I2WhQqZ7v9

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

185.158.251.159:2404

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
false
install_flag
false
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-TKL5S3
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
Remcos family
remcos

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2368 set thread context of 2388	2368	rea.exe	31

System Location Discovery: System Language Discovery 1 TTPs 2 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	rea.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexplore.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2368	rea.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2368	rea.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2388	iexplore.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2368 wrote to memory of 2388	2368	rea.exe	31
PID 2368 wrote to memory of 2388	2368	rea.exe	31
PID 2368 wrote to memory of 2388	2368	rea.exe	31
PID 2368 wrote to memory of 2388	2368	rea.exe	31
PID 2368 wrote to memory of 2388	2368	rea.exe	31

C:\Users\Admin\AppData\Local\Temp\rea.exe
"C:\Users\Admin\AppData\Local\Temp\rea.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2368
- \??\c:\program files (x86)\internet explorer\iexplore.exe
  "c:\program files (x86)\internet explorer\iexplore.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2388

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
c898ddb9c473b3b021c9af9971a28b76

SHA1
0bbdae662adde04a25971e1f7ff491a332e19724

SHA256
e8bfc698be2f362d1f5ca7f747c58f664db05cb046744c1ee7d70be853e6422a

SHA512
c2d43c2f2cedf1d881668b10280475326a180645c9d7096ff9c7bc4243c174a8083ac870585cdb3cfd2dc41e2a6d0050bec384343c85ba1b5abe073e8605f9e0

Download Submit
memory/2388-22-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2388-49-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2388-2-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2388-10-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2388-6-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2388-13-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2388-16-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2388-17-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2388-9-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2388-4-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2388-29-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2388-23-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2388-30-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2388-35-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2388-36-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2388-41-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2388-43-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2388-48-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2388-0-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download

Analysis

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