remcos | 06d30761437ffb30ac9ac077bb3761b5e4c077f3b74f8ed3b7372e104dccf83f

General

Target

file.exe
Size

981KB
MD5

5609198accfb2ccedb39e7755ed6a36c
SHA1

2bc0ee0e47c40a298038863338c4c07d7029d695
SHA256

06d30761437ffb30ac9ac077bb3761b5e4c077f3b74f8ed3b7372e104dccf83f
SHA512

f49ad0d40d40f9073a90cabd73065c4d2ab9de0f340dd109196161ad8bcbd2f73917c5232ec752241231df6ce069e5a0503c844f522a3e7c49daa3ed66a290d3
SSDEEP

24576:IAZCJVAeo/UMV0w7KpWXPL8YKSdtJ/JVw6:mPOd8WIYKSdt5

Score

10^/10

remcos host discovery rat

Malware Config

Extracted

Family

remcos

Botnet

Host

C2

oyo.work.gd:3142

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
vlc
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
pdf
mouse_option
false
mutex
jkm-I9KENP
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
ios
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

Processes:

file.exe

description pid process target process

PID 1984 set thread context of 1884 1984 file.exe file.exe

description	pid	process	target process
PID 1984 set thread context of 1884	1984	file.exe	file.exe

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

Processes:

file.exefile.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

file.exe

pid process

1884 file.exe

pid	process
1884	file.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

file.exe

description	pid	process	target process
PID 1984 wrote to memory of 1884	1984	file.exe	file.exe
PID 1984 wrote to memory of 1884	1984	file.exe	file.exe
PID 1984 wrote to memory of 1884	1984	file.exe	file.exe
PID 1984 wrote to memory of 1884	1984	file.exe	file.exe
PID 1984 wrote to memory of 1884	1984	file.exe	file.exe
PID 1984 wrote to memory of 1884	1984	file.exe	file.exe
PID 1984 wrote to memory of 1884	1984	file.exe	file.exe
PID 1984 wrote to memory of 1884	1984	file.exe	file.exe
PID 1984 wrote to memory of 1884	1984	file.exe	file.exe
PID 1984 wrote to memory of 1884	1984	file.exe	file.exe
PID 1984 wrote to memory of 1884	1984	file.exe	file.exe
PID 1984 wrote to memory of 1884	1984	file.exe	file.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1984
- C:\Users\Admin\AppData\Local\Temp\file.exe
  "C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:1884

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

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Downloads

C:\ProgramData\pdf\logs.dat

Filesize
144B

MD5
0b6c0fb0ae8d20817c3e27c9d7715b8b

SHA1
7005ebb5b18e8188f3de56a7bc90f8ef81a750c2

SHA256
111ce2f8fe275f8aeb31436c064c9819121c47de5273e45639692e98ad047470

SHA512
469170f419db8e3199096da6adb7102527590b6220caa1b353097bfd890e228cf117682ec31c408b199d61ba0f97518cca04b0a76a3626dd397e6ece42736ed5

Download Submit
memory/1884-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1884-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1884-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1884-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1884-15-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1884-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1884-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1884-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1884-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1884-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1884-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1884-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1884-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1884-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1884-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1884-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1884-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1984-5-0x0000000075350000-0x0000000075B00000-memory.dmp

Filesize
7.7MB

Download
memory/1984-2-0x0000000005950000-0x0000000005EF4000-memory.dmp

Filesize
5.6MB

Download
memory/1984-3-0x0000000005440000-0x00000000054D2000-memory.dmp

Filesize
584KB

Download
memory/1984-0-0x000000007535E000-0x000000007535F000-memory.dmp

Filesize
4KB

Download
memory/1984-20-0x0000000075350000-0x0000000075B00000-memory.dmp

Filesize
7.7MB

Download
memory/1984-1-0x0000000000970000-0x0000000000A6C000-memory.dmp

Filesize
1008KB

Download
memory/1984-10-0x0000000006820000-0x00000000068E0000-memory.dmp

Filesize
768KB

Download
memory/1984-9-0x0000000075350000-0x0000000075B00000-memory.dmp

Filesize
7.7MB

Download
memory/1984-8-0x000000007535E000-0x000000007535F000-memory.dmp

Filesize
4KB

Download
memory/1984-7-0x0000000005940000-0x0000000005952000-memory.dmp

Filesize
72KB

Download
memory/1984-6-0x0000000005510000-0x000000000551A000-memory.dmp

Filesize
40KB

Download
memory/1984-4-0x0000000005580000-0x000000000561C000-memory.dmp

Filesize
624KB

Download

Analysis

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