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 2876 set thread context of 2724 2876 file.exe file.exe

description	pid	process	target process
PID 2876 set thread context of 2724	2876	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

2724 file.exe

pid	process
2724	file.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

file.exe

description	pid	process	target process
PID 2876 wrote to memory of 2724	2876	file.exe	file.exe
PID 2876 wrote to memory of 2724	2876	file.exe	file.exe
PID 2876 wrote to memory of 2724	2876	file.exe	file.exe
PID 2876 wrote to memory of 2724	2876	file.exe	file.exe
PID 2876 wrote to memory of 2724	2876	file.exe	file.exe
PID 2876 wrote to memory of 2724	2876	file.exe	file.exe
PID 2876 wrote to memory of 2724	2876	file.exe	file.exe
PID 2876 wrote to memory of 2724	2876	file.exe	file.exe
PID 2876 wrote to memory of 2724	2876	file.exe	file.exe
PID 2876 wrote to memory of 2724	2876	file.exe	file.exe
PID 2876 wrote to memory of 2724	2876	file.exe	file.exe
PID 2876 wrote to memory of 2724	2876	file.exe	file.exe
PID 2876 wrote to memory of 2724	2876	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:2876
- 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:2724

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
91c9ee7762cb2a573f9c50b437fc9ead

SHA1
7da4b61f4abed46256d37b91f6ddd50bcf90403d

SHA256
d55e5330a4b477d8806dd317d2755ee79da4b18af51dbdefff11fcf4110a84cf

SHA512
6cd161a3eb66dfa5ccacd9ada8518dc29267de9fea4865cbbcac7e4f61e4839ec78ae45ab3b48f55e83be547581d9d87a73cb5038cf721714ff9cd8d80431d2a

Download Submit
memory/2724-10-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-13-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-9-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2724-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-8-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-7-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-6-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2876-1-0x0000000001110000-0x000000000120C000-memory.dmp

Filesize
1008KB

Download
memory/2876-24-0x00000000748C0000-0x0000000074FAE000-memory.dmp

Filesize
6.9MB

Download
memory/2876-2-0x00000000748C0000-0x0000000074FAE000-memory.dmp

Filesize
6.9MB

Download
memory/2876-4-0x00000000748C0000-0x0000000074FAE000-memory.dmp

Filesize
6.9MB

Download
memory/2876-0-0x00000000748CE000-0x00000000748CF000-memory.dmp

Filesize
4KB

Download
memory/2876-5-0x0000000005DC0000-0x0000000005E80000-memory.dmp

Filesize
768KB

Download
memory/2876-3-0x00000000005D0000-0x00000000005E2000-memory.dmp

Filesize
72KB

Download

Analysis

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