remcos | 75923a3d9662a5d5db57fcbba73e1dd2a65d4f8c355f486d615153c01163576c

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
27-09-2024 10:12

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General

Target

statement.exe
Size

842KB
MD5

b85dd2b6ed6d1b2d5c343deab844f5d8
SHA1

8bdc094c9afae6511cf4251b3064413882b011d0
SHA256

f18bf944f9365beda201e63d97f1b93139994d9cef424f855d691cf797c33d0f
SHA512

d544732815bc7864b8c8d65fa1c21e3fbf12a4085c0412943bea40bb8daec4c6665c188aec730509d0c8cdce2239afbaa792b7aee9bbd384eb521cea3d84585e
SSDEEP

12288:IDRRHYiOcfOkfB+4m6oETlk07wtx7EtDJEIgIJHIE3YlPujsyuqt:IFaiOc5D9oE60MEtDJEIgIJHIEyyuqt

Score

10^/10

remcos aug discovery rat

Malware Config

Extracted

Family

remcos

Version

2.7.0 Pro

Botnet

Aug

salespaul.hopto.org:24005

salespaul.ddns.net:24005

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-0ZVAAM
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

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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	statement.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3304 set thread context of 3028	3304	statement.exe	82
PID 2644 set thread context of 5088	2644	statement.exe	84

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 4 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	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	statement.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	statement.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
3304	statement.exe
2644	statement.exe
2644	statement.exe
3304	statement.exe
3304	statement.exe
2644	statement.exe
2644	statement.exe
3304	statement.exe
3304	statement.exe
2644	statement.exe
2644	statement.exe
3304	statement.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
3304	statement.exe
2644	statement.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3304	statement.exe
Token: SeDebugPrivilege	2644	statement.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3028	RegAsm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3304 wrote to memory of 3028	3304	statement.exe	82
PID 3304 wrote to memory of 3028	3304	statement.exe	82
PID 3304 wrote to memory of 3028	3304	statement.exe	82
PID 3304 wrote to memory of 3028	3304	statement.exe	82
PID 3304 wrote to memory of 2644	3304	statement.exe	83
PID 3304 wrote to memory of 2644	3304	statement.exe	83
PID 3304 wrote to memory of 2644	3304	statement.exe	83
PID 2644 wrote to memory of 5088	2644	statement.exe	84
PID 2644 wrote to memory of 5088	2644	statement.exe	84
PID 2644 wrote to memory of 5088	2644	statement.exe	84
PID 2644 wrote to memory of 5088	2644	statement.exe	84

C:\Users\Admin\AppData\Local\Temp\statement.exe
"C:\Users\Admin\AppData\Local\Temp\statement.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3304
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:3028
- C:\Users\Admin\AppData\Local\Temp\statement.exe
  "C:\Users\Admin\AppData\Local\Temp\statement.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2644
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5088

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\remcos\logs.dat

Filesize
74B

MD5
632daa7e488aa66d7cc3076c7d047ae7

SHA1
524a707dcce2fced00aced6d3019103433171034

SHA256
8e17c48925b7a8278634c8d9f6db2b66d48632994ac3108d56bfde991180dfe2

SHA512
6d8a97466904a4e5ddafb1c6b5d86ab953fdffe019da47af998df632b22b7fc50a23a4796008a21ed62dc2f711f2cf4dbef5e3804b36221380ae1a33547a023e

Download Submit
memory/2644-16-0x00000000752F0000-0x0000000075AA0000-memory.dmp

Filesize
7.7MB

Download
memory/2644-27-0x00000000752F0000-0x0000000075AA0000-memory.dmp

Filesize
7.7MB

Download
memory/2644-25-0x00000000752F0000-0x0000000075AA0000-memory.dmp

Filesize
7.7MB

Download
memory/2644-17-0x00000000752F0000-0x0000000075AA0000-memory.dmp

Filesize
7.7MB

Download
memory/3028-11-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3028-15-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3028-9-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3028-6-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3028-13-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3304-4-0x0000000005730000-0x000000000575E000-memory.dmp

Filesize
184KB

Download
memory/3304-0-0x00000000752FE000-0x00000000752FF000-memory.dmp

Filesize
4KB

Download
memory/3304-8-0x00000000752F0000-0x0000000075AA0000-memory.dmp

Filesize
7.7MB

Download
memory/3304-22-0x00000000752FE000-0x00000000752FF000-memory.dmp

Filesize
4KB

Download
memory/3304-23-0x00000000752F0000-0x0000000075AA0000-memory.dmp

Filesize
7.7MB

Download
memory/3304-24-0x00000000752F0000-0x0000000075AA0000-memory.dmp

Filesize
7.7MB

Download
memory/3304-3-0x00000000752F0000-0x0000000075AA0000-memory.dmp

Filesize
7.7MB

Download
memory/3304-2-0x0000000004C50000-0x0000000004CE2000-memory.dmp

Filesize
584KB

Download
memory/3304-1-0x0000000000200000-0x00000000002D8000-memory.dmp

Filesize
864KB

Download