remcos | 4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8

General

Target

4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8.exe
Size

7.5MB
MD5

d5a3c4222b087ecabf47ffa4b4b05ec1
SHA1

32aa6710e55e113c578904884ce9dafc47d907d8
SHA256

4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8
SHA512

c278b8c64238d3d313c2d76506c545981a891404a20595679c35f4e10f7de3eaf028967ea1b9ab0c64c7bd48f2a8b90cd070e7c51a142de7d7d37bd216742d45
SSDEEP

98304:z5djeXAhCy1HDJQv8kVH0WUjqqTnYRoeEgmn1NX+6fnUXSvPLOqq21R2ajvLjgdR:z5djUAhCy1dUVx3vinLVdXMakf

Score

10^/10

remcos 20???septiem��2024 discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

20???Septiem��2024

C2

ufye28738bd3yv23d783.con-ip.com:5023

Attributes

audio_folder
MicRecords
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
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-WM7NR4
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

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-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Express = "C:\\Users\\Admin\\Pictures\\MonaLisa\\HunterExpress.exe"	4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8.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	4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5060	4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 540 wrote to memory of 5060	540	4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8.exe	84
PID 540 wrote to memory of 5060	540	4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8.exe	84
PID 540 wrote to memory of 5060	540	4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8.exe	84
PID 540 wrote to memory of 5060	540	4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8.exe	84
PID 540 wrote to memory of 5060	540	4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8.exe	84

C:\Users\Admin\AppData\Local\Temp\4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8.exe
"C:\Users\Admin\AppData\Local\Temp\4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:540
- C:\Users\Admin\AppData\Local\Temp\4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8.exe
  "C:\Users\Admin\AppData\Local\Temp\4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:5060

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

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
10915d482b8aa924735e8bf9d5236774

SHA1
fce9108adfae13ebb8308ecf34b401ed67f0ed8f

SHA256
24d323a457279702e8cd5157f3ed08be76ac918c60180947cb3985b9d5fd8719

SHA512
639549f1a6f0e9164a615aa60f7fd29faa6d9f4d0ce99a0204cb851bc35fd6e21d320e279209e6295aa7244d29e2562bed60a7b6affa4e94d039e8af03d52267

Download Submit
memory/540-4-0x0000000000400000-0x0000000000D8C000-memory.dmp

Filesize
9.5MB

Download
memory/540-0-0x0000000000400000-0x0000000000D8C000-memory.dmp

Filesize
9.5MB

Download
memory/540-3-0x0000000000400000-0x0000000000D8C000-memory.dmp

Filesize
9.5MB

Download
memory/540-7-0x0000000000400000-0x0000000000D8C000-memory.dmp

Filesize
9.5MB

Download
memory/540-9-0x0000000000400000-0x0000000000D8C000-memory.dmp

Filesize
9.5MB

Download
memory/540-18-0x0000000000457000-0x0000000000470000-memory.dmp

Filesize
100KB

Download
memory/540-1-0x0000000000457000-0x0000000000470000-memory.dmp

Filesize
100KB

Download
memory/540-5-0x0000000000400000-0x0000000000D8C000-memory.dmp

Filesize
9.5MB

Download
memory/540-8-0x0000000000400000-0x0000000000D8C000-memory.dmp

Filesize
9.5MB

Download
memory/5060-17-0x0000000000400000-0x0000000000D8C000-memory.dmp

Filesize
9.5MB

Download
memory/5060-29-0x0000000000D90000-0x0000000000E12000-memory.dmp

Filesize
520KB

Download
memory/5060-10-0x0000000000D90000-0x0000000000E12000-memory.dmp

Filesize
520KB

Download
memory/5060-16-0x0000000000D90000-0x0000000000E12000-memory.dmp

Filesize
520KB

Download
memory/5060-11-0x0000000000D90000-0x0000000000E12000-memory.dmp

Filesize
520KB

Download
memory/5060-12-0x0000000000D90000-0x0000000000E12000-memory.dmp

Filesize
520KB

Download
memory/5060-23-0x0000000000D90000-0x0000000000E12000-memory.dmp

Filesize
520KB

Download
memory/5060-24-0x0000000000D90000-0x0000000000E12000-memory.dmp

Filesize
520KB

Download
memory/5060-15-0x0000000000D90000-0x0000000000E12000-memory.dmp

Filesize
520KB

Download
memory/5060-6-0x0000000000D90000-0x0000000000E12000-memory.dmp

Filesize
520KB

Download
memory/5060-30-0x0000000000D90000-0x0000000000E12000-memory.dmp

Filesize
520KB

Download
memory/5060-36-0x0000000000D90000-0x0000000000E12000-memory.dmp

Filesize
520KB

Download
memory/5060-37-0x0000000000D90000-0x0000000000E12000-memory.dmp

Filesize
520KB

Download
memory/5060-42-0x0000000000D90000-0x0000000000E12000-memory.dmp

Filesize
520KB

Download
memory/5060-43-0x0000000000D90000-0x0000000000E12000-memory.dmp

Filesize
520KB

Download
memory/5060-48-0x0000000000D90000-0x0000000000E12000-memory.dmp

Filesize
520KB

Download
memory/5060-50-0x0000000000D90000-0x0000000000E12000-memory.dmp

Filesize
520KB

Download
memory/5060-55-0x0000000000D90000-0x0000000000E12000-memory.dmp

Filesize
520KB

Download
memory/5060-56-0x0000000000D90000-0x0000000000E12000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads