remcos | 7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0

General

Target

7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0.exe
Size

140KB
MD5

826caf6828a8165a5ecdbfbc3f19e6c9
SHA1

7ddc528c0f40a930d6870b98208fcdbe9bed6ad8
SHA256

7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0
SHA512

1643f1466e6d8c888723b4b5da71abb006c24a5dec9cb68c46ed306a3bb0635a693ab331f92158ac223ef1499257730bf1a16ffb496702eb0d2d020abab0df49
SSDEEP

3072:xPd4n/M+WLcilrpgGH/GwY87mVmIXhIHVS9:xP6/M+WLckOBhVmIYs

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

systemcontrol.ddns.net:45000

systemcontrol2.ddns.net:45000

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
OfficeUpgrade.exe
copy_folder
OfficeUpgrade
delete_file
false
hide_file
true
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
Upgrader.dat
keylog_flag
false
keylog_folder
Upgrader
keylog_path
%AppData%
mouse_option
false
mutex
req_khauflaoyr
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
startup_value
OfficeUpgrade
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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0.exe

Executes dropped EXE 2 IoCs

pid	Process
4920	wn2ra4ohzdr.exe
2788	wn2ra4ohzdr.exe

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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\raj4dkhhiap = "C:\\Users\\Admin\\AppData\\Roaming\\raj4dkhhiap\\wn2ra4ohzdr.exe"	7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4920 set thread context of 2788	4920	wn2ra4ohzdr.exe	94

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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	wn2ra4ohzdr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wn2ra4ohzdr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2788	wn2ra4ohzdr.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4888 wrote to memory of 4920	4888	7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0.exe	84
PID 4888 wrote to memory of 4920	4888	7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0.exe	84
PID 4888 wrote to memory of 4920	4888	7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0.exe	84
PID 4920 wrote to memory of 2788	4920	wn2ra4ohzdr.exe	94
PID 4920 wrote to memory of 2788	4920	wn2ra4ohzdr.exe	94
PID 4920 wrote to memory of 2788	4920	wn2ra4ohzdr.exe	94
PID 4920 wrote to memory of 2788	4920	wn2ra4ohzdr.exe	94
PID 4920 wrote to memory of 2788	4920	wn2ra4ohzdr.exe	94
PID 4920 wrote to memory of 2788	4920	wn2ra4ohzdr.exe	94
PID 4920 wrote to memory of 2788	4920	wn2ra4ohzdr.exe	94
PID 4920 wrote to memory of 2788	4920	wn2ra4ohzdr.exe	94
PID 4920 wrote to memory of 2788	4920	wn2ra4ohzdr.exe	94

C:\Users\Admin\AppData\Local\Temp\7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0.exe
"C:\Users\Admin\AppData\Local\Temp\7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4888
- C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe
  "C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4920
- - C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe
    "C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2788

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

Query Registry

1

T1012

System Information Discovery

2

T1082

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:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe

Filesize
140KB

MD5
467fa0c95f9bb467984aa87b3dc52359

SHA1
70a041b1d677638ad31e42a0395fd41e99a1044d

SHA256
c6b73f2ff27256b510c7300c7594a4feb4681165112ade9678879ed76a602cdc

SHA512
73bed88364e38e92129f664d13a83edc380a924aecd0af223601b2d43a231b98d93d2719769f8ac08f3b2ba1992b9792b02f12074790c60e1586a34c206d196b

Download Submit
memory/2788-30-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2788-29-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2788-23-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2788-24-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2788-26-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2788-25-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4888-4-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/4888-20-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/4888-6-0x0000000005880000-0x00000000058A0000-memory.dmp

Filesize
128KB

Download
memory/4888-5-0x0000000004DF0000-0x0000000004DFA000-memory.dmp

Filesize
40KB

Download
memory/4888-0-0x000000007476E000-0x000000007476F000-memory.dmp

Filesize
4KB

Download
memory/4888-3-0x0000000004C00000-0x0000000004C92000-memory.dmp

Filesize
584KB

Download
memory/4888-2-0x00000000050D0000-0x0000000005674000-memory.dmp

Filesize
5.6MB

Download
memory/4888-1-0x0000000000310000-0x0000000000338000-memory.dmp

Filesize
160KB

Download
memory/4920-21-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/4920-22-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/4920-33-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/4920-35-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads