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 4804 set thread context of 3892 4804 file.exe file.exe

description	pid	process	target process
PID 4804 set thread context of 3892	4804	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

3892 file.exe

pid	process
3892	file.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

file.exe

description	pid	process	target process
PID 4804 wrote to memory of 3892	4804	file.exe	file.exe
PID 4804 wrote to memory of 3892	4804	file.exe	file.exe
PID 4804 wrote to memory of 3892	4804	file.exe	file.exe
PID 4804 wrote to memory of 3892	4804	file.exe	file.exe
PID 4804 wrote to memory of 3892	4804	file.exe	file.exe
PID 4804 wrote to memory of 3892	4804	file.exe	file.exe
PID 4804 wrote to memory of 3892	4804	file.exe	file.exe
PID 4804 wrote to memory of 3892	4804	file.exe	file.exe
PID 4804 wrote to memory of 3892	4804	file.exe	file.exe
PID 4804 wrote to memory of 3892	4804	file.exe	file.exe
PID 4804 wrote to memory of 3892	4804	file.exe	file.exe
PID 4804 wrote to memory of 3892	4804	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:4804
- 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:3892

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
ac7f61196ddebbf408b11e5514818a6a

SHA1
a5b56989f07b9fe8c46f13c0a19248bc4c25e67c

SHA256
85859841e812a18e22bfc2f2711d0f9318beb7a8b64182d6a01a7a14436e0814

SHA512
46ab3ddccf112ba56e1eb1d56587611eb6a2cee650c3574dd6ae4b1a6ce8c639c7df60cc3f109eb67b77751c13f1ad354d2613edd8be4cbd31b7e04f43f3d8b2

Download Submit
memory/3892-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3892-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3892-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3892-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3892-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3892-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3892-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3892-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3892-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3892-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3892-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3892-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3892-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3892-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3892-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3892-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3892-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4804-5-0x00000000054A0000-0x00000000054AA000-memory.dmp

Filesize
40KB

Download
memory/4804-2-0x00000000059C0000-0x0000000005F64000-memory.dmp

Filesize
5.6MB

Download
memory/4804-3-0x00000000054B0000-0x0000000005542000-memory.dmp

Filesize
584KB

Download
memory/4804-0-0x0000000074F0E000-0x0000000074F0F000-memory.dmp

Filesize
4KB

Download
memory/4804-21-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4804-1-0x0000000000AD0000-0x0000000000BCC000-memory.dmp

Filesize
1008KB

Download
memory/4804-10-0x00000000067B0000-0x0000000006870000-memory.dmp

Filesize
768KB

Download
memory/4804-9-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4804-8-0x0000000074F0E000-0x0000000074F0F000-memory.dmp

Filesize
4KB

Download
memory/4804-7-0x0000000006770000-0x0000000006782000-memory.dmp

Filesize
72KB

Download
memory/4804-6-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4804-4-0x00000000055F0000-0x000000000568C000-memory.dmp

Filesize
624KB

Download

Analysis

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