remcos | cbd25d0744b660aa13537e737073347b6f31e6044711fd88d0401bb7d97e415e

Analysis

max time kernel
149s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
15-10-2024 13:16

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General

Target

4806a4e820ddf0e6d85c2927f7a04a56_JaffaCakes118.exe
Size

429KB
MD5

4806a4e820ddf0e6d85c2927f7a04a56
SHA1

08d2355a12c53e507ea2fcaa0dd80c5c7e38a01c
SHA256

cbd25d0744b660aa13537e737073347b6f31e6044711fd88d0401bb7d97e415e
SHA512

2d0217b3b2ed5868ce7f12d6427a70e8e607bbd1c75b7aebccd77df6ac8eb21a520106beeab042372724bdd29ceac73fa5379267997f4d00ef89b6c11a021924
SSDEEP

12288:eZJ5CPJg/CEWSmAKAPvB4BrCeAwBlmD9Gte:kR/CpSuAPvByr4qmD9se

Score

10^/10

remcos fud-my-ass discovery rat

Malware Config

Extracted

Family

remcos

Version

3.2.0 Light

Botnet

FUD-MY-ASS

www.pakchoob.me: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
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
date
keylog_path
%AppData%
mouse_option
false
mutex
microsoft-L13B40
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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3512 set thread context of 4808	3512	4806a4e820ddf0e6d85c2927f7a04a56_JaffaCakes118.exe	85

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3216	3512	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 1 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	4806a4e820ddf0e6d85c2927f7a04a56_JaffaCakes118.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3512	4806a4e820ddf0e6d85c2927f7a04a56_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3512 wrote to memory of 4808	3512	4806a4e820ddf0e6d85c2927f7a04a56_JaffaCakes118.exe	85
PID 3512 wrote to memory of 4808	3512	4806a4e820ddf0e6d85c2927f7a04a56_JaffaCakes118.exe	85
PID 3512 wrote to memory of 4808	3512	4806a4e820ddf0e6d85c2927f7a04a56_JaffaCakes118.exe	85
PID 3512 wrote to memory of 4808	3512	4806a4e820ddf0e6d85c2927f7a04a56_JaffaCakes118.exe	85

C:\Users\Admin\AppData\Local\Temp\4806a4e820ddf0e6d85c2927f7a04a56_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4806a4e820ddf0e6d85c2927f7a04a56_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3512
- C:\Windows\SysWOW64\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\4806a4e820ddf0e6d85c2927f7a04a56_JaffaCakes118.exe"
  2⤵
  PID:4808
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3512 -s 424
  2⤵
  - Program crash
  PID:3216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3512 -ip 3512
1⤵
PID:1112

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3512-2-0x0000000002340000-0x0000000002342000-memory.dmp

Filesize
8KB

Download
memory/3512-1-0x0000000000400000-0x0000000000500000-memory.dmp

Filesize
1024KB

Download
memory/4808-3-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/4808-4-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/4808-5-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/4808-6-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/4808-7-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/4808-8-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download