remcos | d3d7cf78c75f38bab6a8da2535b26b58eaf60a49daf48bbba906e4437530c9cc

General

Target

aa.exe
Size

1.7MB
MD5

bba9071d47aea5cde7a74f97d744214d
SHA1

0a42acd4019533247b9e04fbede3f1d960efa56c
SHA256

d3d7cf78c75f38bab6a8da2535b26b58eaf60a49daf48bbba906e4437530c9cc
SHA512

bdb1ab8682659f71d5a28c86872ec1497dfb76546d619588714570eaf1cde5f6cece50ebfe5a9e603e74e2d2b02e22651acf0bc6b9728e9db673699471b4b1f0
SSDEEP

24576:3uS2V085DgJrivY05+QaM9xqfSUsQPN52eiHyfsEErQR+J6ft87YIHCtZa8CijBd:e6Qt3qfnESfsEYesCtZa8CijBX9kotjx

Score

10^/10

remcos agosto2024 discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

AGOSTO2024

C2

hotsdefender.webredirect.org:2404

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
true
install_flag
false
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
Key
keylog_path
%AppData%
mouse_option
false
mutex
Ag0s70JwbdycP5ikGBT/VhjSeXFA==-KBUYSI
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
wikipedia;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Wisecleaner = "C:\\Users\\Admin\\Pictures\\Wisecleaner\\Wisecleaner.exe"	aa.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aa.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4424	aa.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4172 wrote to memory of 4424	4172	aa.exe	89
PID 4172 wrote to memory of 4424	4172	aa.exe	89
PID 4172 wrote to memory of 4424	4172	aa.exe	89
PID 4172 wrote to memory of 4424	4172	aa.exe	89
PID 4172 wrote to memory of 4424	4172	aa.exe	89

C:\Users\Admin\AppData\Local\Temp\aa.exe
"C:\Users\Admin\AppData\Local\Temp\aa.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4172
- C:\Users\Admin\AppData\Local\Temp\aa.exe
  "C:\Users\Admin\AppData\Local\Temp\aa.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4424

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

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

memory/4172-7-0x0000000000400000-0x00000000005CA000-memory.dmp

Filesize
1.8MB

Download
memory/4172-2-0x0000000000414000-0x000000000042E000-memory.dmp

Filesize
104KB

Download
memory/4172-1-0x0000000000400000-0x00000000005CA000-memory.dmp

Filesize
1.8MB

Download
memory/4172-4-0x0000000000400000-0x00000000005CA000-memory.dmp

Filesize
1.8MB

Download
memory/4172-3-0x0000000000400000-0x00000000005CA000-memory.dmp

Filesize
1.8MB

Download
memory/4172-0-0x0000000000400000-0x00000000005CA000-memory.dmp

Filesize
1.8MB

Download
memory/4172-6-0x0000000000400000-0x00000000005CA000-memory.dmp

Filesize
1.8MB

Download
memory/4424-8-0x00000000005D0000-0x0000000000652000-memory.dmp

Filesize
520KB

Download
memory/4424-17-0x00000000005D0000-0x0000000000652000-memory.dmp

Filesize
520KB

Download
memory/4424-10-0x00000000005D0000-0x0000000000652000-memory.dmp

Filesize
520KB

Download
memory/4424-13-0x00000000005D0000-0x0000000000652000-memory.dmp

Filesize
520KB

Download
memory/4424-5-0x00000000005D0000-0x0000000000652000-memory.dmp

Filesize
520KB

Download
memory/4424-15-0x00000000005D0000-0x0000000000652000-memory.dmp

Filesize
520KB

Download
memory/4424-9-0x00000000005D0000-0x0000000000652000-memory.dmp

Filesize
520KB

Download
memory/4424-14-0x0000000000400000-0x00000000005CA000-memory.dmp

Filesize
1.8MB

Download
memory/4424-16-0x00000000005D0000-0x0000000000652000-memory.dmp

Filesize
520KB

Download
memory/4424-18-0x00000000005D0000-0x0000000000652000-memory.dmp

Filesize
520KB

Download
memory/4424-24-0x00000000005D0000-0x0000000000652000-memory.dmp

Filesize
520KB

Download
memory/4424-25-0x00000000005D0000-0x0000000000652000-memory.dmp

Filesize
520KB

Download
memory/4424-26-0x00000000005D0000-0x0000000000652000-memory.dmp

Filesize
520KB

Download
memory/4424-28-0x00000000005D0000-0x0000000000652000-memory.dmp

Filesize
520KB

Download
memory/4424-33-0x00000000005D0000-0x0000000000652000-memory.dmp

Filesize
520KB

Download
memory/4424-32-0x00000000005D0000-0x0000000000652000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads