remcos | efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a

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

Processes:

800399031-18.11.2024.pdf.exe

description	pid	Process	procid_target
PID 116 set thread context of 928	116	800399031-18.11.2024.pdf.exe	99

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

Processes:

800399031-18.11.2024.pdf.exe800399031-18.11.2024.pdf.exe

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

Processes:

800399031-18.11.2024.pdf.exe

pid	Process
928	800399031-18.11.2024.pdf.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

800399031-18.11.2024.pdf.exe

description	pid	Process	procid_target
PID 116 wrote to memory of 928	116	800399031-18.11.2024.pdf.exe	99
PID 116 wrote to memory of 928	116	800399031-18.11.2024.pdf.exe	99
PID 116 wrote to memory of 928	116	800399031-18.11.2024.pdf.exe	99
PID 116 wrote to memory of 928	116	800399031-18.11.2024.pdf.exe	99
PID 116 wrote to memory of 928	116	800399031-18.11.2024.pdf.exe	99
PID 116 wrote to memory of 928	116	800399031-18.11.2024.pdf.exe	99
PID 116 wrote to memory of 928	116	800399031-18.11.2024.pdf.exe	99
PID 116 wrote to memory of 928	116	800399031-18.11.2024.pdf.exe	99
PID 116 wrote to memory of 928	116	800399031-18.11.2024.pdf.exe	99
PID 116 wrote to memory of 928	116	800399031-18.11.2024.pdf.exe	99
PID 116 wrote to memory of 928	116	800399031-18.11.2024.pdf.exe	99
PID 116 wrote to memory of 928	116	800399031-18.11.2024.pdf.exe	99

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:116
- 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:928

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

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Downloads

C:\ProgramData\pdf\logs.dat

Filesize
144B

MD5
65fe6e48e4ac3c035872e5314d9f5450

SHA1
de9822f5cfecc0aa7d9d47aada82f694c1aa389c

SHA256
fa0ee32e6e1f8303961084ad16dfd868bbc1ae5f0b794bb4c3637751f1491a39

SHA512
e00606f36a293e9e194e0bf40bfec469892b246b5d2333b23cbe2b20844fce8920ace44b3bfc99070970ca3d12bba4667b73c4eb30d929ce7f7b4552b536537c

Download Submit
memory/116-8-0x00000000053F0000-0x0000000005402000-memory.dmp

Filesize
72KB

Download
memory/116-3-0x0000000004FA0000-0x0000000005032000-memory.dmp

Filesize
584KB

Download
memory/116-1-0x0000000000570000-0x0000000000674000-memory.dmp

Filesize
1.0MB

Download
memory/116-4-0x0000000004F40000-0x0000000004F4A000-memory.dmp

Filesize
40KB

Download
memory/116-5-0x0000000074F30000-0x00000000756E0000-memory.dmp

Filesize
7.7MB

Download
memory/116-6-0x0000000006710000-0x00000000067AC000-memory.dmp

Filesize
624KB

Download
memory/116-7-0x0000000074F3E000-0x0000000074F3F000-memory.dmp

Filesize
4KB

Download
memory/116-0-0x0000000074F3E000-0x0000000074F3F000-memory.dmp

Filesize
4KB

Download
memory/116-9-0x0000000074F30000-0x00000000756E0000-memory.dmp

Filesize
7.7MB

Download
memory/116-10-0x0000000006910000-0x00000000069D0000-memory.dmp

Filesize
768KB

Download
memory/116-2-0x0000000005550000-0x0000000005AF4000-memory.dmp

Filesize
5.6MB

Download
memory/116-20-0x0000000074F30000-0x00000000756E0000-memory.dmp

Filesize
7.7MB

Download
memory/928-58-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/928-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/928-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/928-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/928-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/928-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/928-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/928-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/928-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/928-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/928-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/928-15-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/928-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/928-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/928-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/928-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/928-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/928-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/928-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads