remcos | e42065b2d3de06cb244055718fe5fe7536fb74c40282d596814d88406ef709c1

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
29-12-2024 09:39

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General

Target

$PLUGINSDIR/ydejjbwlzb.dll
Size

11KB
MD5

4aaa0bb30fa44bab0f47a1e9716885ae
SHA1

1417c687522222a7229c38fd7a9ce3aab3fb56f4
SHA256

83f56b8aacf3b7c6f319457eff4dffdff68256abb3e6d1f0e50263800deea83b
SHA512

711679b85b2d3fa4648ed50ab8feed372a1fbca278f12fb1f42d7d2c9cc1e3a6d7106e6d81aaa040cf277775290cc0ef8f540f2e8ec5d1b6d0898651cbf7d9b8
SSDEEP

192:pebILwJ3Z+iilHZKlo7fpnBXTGjQC9VHlxEw:gbIc/+2lo7fl9XC9vOw

Score

10^/10

remcos jimbo discovery rat

Malware Config

Extracted

Family

remcos

Version

2.7.2 Pro

Botnet

jimbo

wealthgod456.ddns.net:4479

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-6CWFR4
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
wikipedia;solitaire;

Signatures

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4872 set thread context of 4812	4872	rundll32.exe	84

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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4872	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 232 wrote to memory of 4872	232	rundll32.exe	83
PID 232 wrote to memory of 4872	232	rundll32.exe	83
PID 232 wrote to memory of 4872	232	rundll32.exe	83
PID 4872 wrote to memory of 4812	4872	rundll32.exe	84
PID 4872 wrote to memory of 4812	4872	rundll32.exe	84
PID 4872 wrote to memory of 4812	4872	rundll32.exe	84
PID 4872 wrote to memory of 4812	4872	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\ydejjbwlzb.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:232
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\ydejjbwlzb.dll,#1
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:4872
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\ydejjbwlzb.dll,#1
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4812

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/4812-1-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4812-3-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4812-4-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4812-5-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4812-6-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4872-0-0x0000000075243000-0x0000000075245000-memory.dmp

Filesize
8KB

Download