remcos | f216501f3a4213b738c07cc290e3b5eceb2f35ea410b2ae1b1b188e27ebddc7d

General

Target
11.03.2022 Transfer_pdf.exe
Size 528KB
Sample220311-r36ydschej
SHA256 f216501f3a4213b738c07cc290e3b5eceb2f35ea410b2ae1b1b188e27ebddc7d
MD5 0cf9dc1ca6017508bace40a3704a8ea3
SHA1 feecec54593f22115fd06e52e7cbd748a94d1d9d
SHA512 16ff932d0f334a0b6c36716d9d9655a743aaf04ea60e9b904f6ca0c452c651754255ac42bfef41793c7803bc3bd7124089c81f6f0e9ca3b1f449b3fe1c064260
MD5 SHA1 SHA512

Score

10^/10

remcos excessgrace persistence rat suricata

Malware Config

Extracted

Family

remcos

Botnet

ExcessGRACE

C2

vkllaw.com:2828

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-7J4K36
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
take_screenshot_title
notepad;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
suricata: ET MALWARE Remocs 3.x Unencrypted Checkin
suricata: ET MALWARE Remocs 3.x Unencrypted Checkin
suricata
suricata: ET MALWARE Remocs 3.x Unencrypted Server Response
suricata: ET MALWARE Remocs 3.x Unencrypted Server Response
suricata

Executes dropped EXE 2 IoCs

pid	Process
4996	eansirte.exe
4192	eansirte.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2403053463-4052593947-3703345493-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cwwwd = "C:\\Users\\Admin\\AppData\\Roaming\\rqudgpxsdru\\ppaklwtkqw.exe"	eansirte.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4192	eansirte.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 5080 wrote to memory of 4996	5080	11.03.2022 Transfer_pdf.exe	81
PID 5080 wrote to memory of 4996	5080	11.03.2022 Transfer_pdf.exe	81
PID 5080 wrote to memory of 4996	5080	11.03.2022 Transfer_pdf.exe	81
PID 4996 wrote to memory of 4192	4996	eansirte.exe	83
PID 4996 wrote to memory of 4192	4996	eansirte.exe	83
PID 4996 wrote to memory of 4192	4996	eansirte.exe	83
PID 4996 wrote to memory of 4192	4996	eansirte.exe	83
PID 4996 wrote to memory of 4192	4996	eansirte.exe	83
PID 4996 wrote to memory of 4192	4996	eansirte.exe	83
PID 4996 wrote to memory of 4192	4996	eansirte.exe	83
PID 4996 wrote to memory of 4192	4996	eansirte.exe	83
PID 4996 wrote to memory of 4192	4996	eansirte.exe	83
PID 4996 wrote to memory of 4192	4996	eansirte.exe	83
PID 4996 wrote to memory of 4192	4996	eansirte.exe	83
PID 4996 wrote to memory of 4192	4996	eansirte.exe	83

C:\Users\Admin\AppData\Local\Temp\11.03.2022 Transfer_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\11.03.2022 Transfer_pdf.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:5080
- C:\Users\Admin\AppData\Local\Temp\eansirte.exe
  C:\Users\Admin\AppData\Local\Temp\eansirte.exe C:\Users\Admin\AppData\Local\Temp\kinrn
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:4996
- - C:\Users\Admin\AppData\Local\Temp\eansirte.exe
    C:\Users\Admin\AppData\Local\Temp\eansirte.exe C:\Users\Admin\AppData\Local\Temp\kinrn
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    PID:4192

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4192-139-0x0000000000240000-0x00000000002BA000-memory.dmp

Download

memory/4192-144-0x0000000000240000-0x00000000002BA000-memory.dmp

Download

memory/4192-149-0x0000000000240000-0x00000000002BA000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads