remcos | 38bf1b283154bc20e3812e560d75bc85baa3f74458a8577b570ba26f0637f2f7

General

Target

800399031-18.11.2024.pdf.exe
Size

1.0MB
MD5

54a5436bb5bf3977e98eda5ce6f8e8d2
SHA1

5aed6273fe965d5e0c41b0e934aa92099327e4da
SHA256

efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a
SHA512

0948ad9fb15f733c2a7df75f72da0dbd9a96e27b8228b11346c20fdcd0fc2888c634bc2ba5cb3ffd82c79190745ac7eba8f278d7036d79fa2cab6de8fc1f6ab9
SSDEEP

12288:FWCYKo7G7uh5W7R1c7MWLy5FbvG8bDzIMM3bGpsgUVEgcb8YaMCnHMybyac7nSZ7:FW+o7Co5Ww7Muyjbu4VlUVEtaMJZ7SZ

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

description	pid	Process	procid_target
PID 328 set thread context of 2924	328	800399031-18.11.2024.pdf.exe	31

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	800399031-18.11.2024.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	800399031-18.11.2024.pdf.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2924	800399031-18.11.2024.pdf.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 328 wrote to memory of 2924	328	800399031-18.11.2024.pdf.exe	31
PID 328 wrote to memory of 2924	328	800399031-18.11.2024.pdf.exe	31
PID 328 wrote to memory of 2924	328	800399031-18.11.2024.pdf.exe	31
PID 328 wrote to memory of 2924	328	800399031-18.11.2024.pdf.exe	31
PID 328 wrote to memory of 2924	328	800399031-18.11.2024.pdf.exe	31
PID 328 wrote to memory of 2924	328	800399031-18.11.2024.pdf.exe	31
PID 328 wrote to memory of 2924	328	800399031-18.11.2024.pdf.exe	31
PID 328 wrote to memory of 2924	328	800399031-18.11.2024.pdf.exe	31
PID 328 wrote to memory of 2924	328	800399031-18.11.2024.pdf.exe	31
PID 328 wrote to memory of 2924	328	800399031-18.11.2024.pdf.exe	31
PID 328 wrote to memory of 2924	328	800399031-18.11.2024.pdf.exe	31
PID 328 wrote to memory of 2924	328	800399031-18.11.2024.pdf.exe	31
PID 328 wrote to memory of 2924	328	800399031-18.11.2024.pdf.exe	31

C:\Users\Admin\AppData\Local\Temp\800399031-18.11.2024.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\800399031-18.11.2024.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:328
- C:\Users\Admin\AppData\Local\Temp\800399031-18.11.2024.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\800399031-18.11.2024.pdf.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2924

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

Replay Monitor

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Downloads

C:\ProgramData\pdf\logs.dat

Filesize
144B

MD5
f44088061f272c4f601e58ff098c1ad7

SHA1
00600b7220e1714f600b92e01b573c0b27af64a3

SHA256
1e5c59493fabbcb718389d153a949216ecb6069ff9be111c09fe45f606624c1e

SHA512
33be8e8875d0e2d65fba09b76a41da3f7731ad5e51a31cf76654aa501526e66879d75ef58589995c2bdc16c7f8f9615aede66550598adea91481dc3371462108

Download Submit
memory/328-0-0x00000000745EE000-0x00000000745EF000-memory.dmp

Filesize
4KB

Download
memory/328-1-0x00000000010F0000-0x00000000011F4000-memory.dmp

Filesize
1.0MB

Download
memory/328-2-0x00000000745E0000-0x0000000074CCE000-memory.dmp

Filesize
6.9MB

Download
memory/328-3-0x00000000005C0000-0x00000000005D2000-memory.dmp

Filesize
72KB

Download
memory/328-4-0x00000000745EE000-0x00000000745EF000-memory.dmp

Filesize
4KB

Download
memory/328-5-0x00000000745E0000-0x0000000074CCE000-memory.dmp

Filesize
6.9MB

Download
memory/328-6-0x0000000005860000-0x0000000005920000-memory.dmp

Filesize
768KB

Download
memory/328-33-0x00000000745E0000-0x0000000074CCE000-memory.dmp

Filesize
6.9MB

Download
memory/2924-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2924-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-17-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-15-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-13-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-9-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-7-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-56-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-63-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2924-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

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