remcos | f3646ac33546540137231400c43e90525e2bc6fad1ba2c27cb56466c65bd58b3

General

Target

7119698425e2056d404e97b12ed5ca37.exe
Size

8.4MB
MD5

7119698425e2056d404e97b12ed5ca37
SHA1

47ebc0744e88fbe12876471b49f4df80195f428a
SHA256

f3646ac33546540137231400c43e90525e2bc6fad1ba2c27cb56466c65bd58b3
SHA512

817eb34af541cd6b7b0a67e8d09668014c3fe9e43cb4df355840a2f7529853a8e34ca6d9af3e9b35137c7e13a6de98874dff50b962dc1d10b4e2a3041a9efede
SSDEEP

98304:Gnbgpe4NdaEMybVR/XfJca1tzZdBTXuOMehkf9O:WUpe4qiJdxcg/

Score

10^/10

remcos rosas discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

ROSAS

C2

newstaticfreepoint24.ddns-ip.net:3020

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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
registros.dat
keylog_flag
false
keylog_folder
data
mouse_option
false
mutex
kljjbdlcjbavhbiluiewliuwqerlib-DDZVN3
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Capturas de pantalla
screenshot_path
%AppData%
screenshot_time
10
startup_value
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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	7119698425e2056d404e97b12ed5ca37.exe

Deletes itself 1 IoCs

pid	Process
2296	WScript.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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VSCode = "C:\\Users\\Admin\\Favorites\\VS Code\\user-data\\Code.exe"	7119698425e2056d404e97b12ed5ca37.exe

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	7119698425e2056d404e97b12ed5ca37.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7119698425e2056d404e97b12ed5ca37.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000_Classes\Local Settings	7119698425e2056d404e97b12ed5ca37.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
368	7119698425e2056d404e97b12ed5ca37.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2544 wrote to memory of 368	2544	7119698425e2056d404e97b12ed5ca37.exe	83
PID 2544 wrote to memory of 368	2544	7119698425e2056d404e97b12ed5ca37.exe	83
PID 2544 wrote to memory of 368	2544	7119698425e2056d404e97b12ed5ca37.exe	83
PID 2544 wrote to memory of 368	2544	7119698425e2056d404e97b12ed5ca37.exe	83
PID 2544 wrote to memory of 368	2544	7119698425e2056d404e97b12ed5ca37.exe	83
PID 368 wrote to memory of 2296	368	7119698425e2056d404e97b12ed5ca37.exe	100
PID 368 wrote to memory of 2296	368	7119698425e2056d404e97b12ed5ca37.exe	100
PID 368 wrote to memory of 2296	368	7119698425e2056d404e97b12ed5ca37.exe	100

C:\Users\Admin\AppData\Local\Temp\7119698425e2056d404e97b12ed5ca37.exe
"C:\Users\Admin\AppData\Local\Temp\7119698425e2056d404e97b12ed5ca37.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2544
- C:\Users\Admin\AppData\Local\Temp\7119698425e2056d404e97b12ed5ca37.exe
  "C:\Users\Admin\AppData\Local\Temp\7119698425e2056d404e97b12ed5ca37.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:368
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\utkebdzuxrbycpniohdnorjrbkcil.vbs"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2296

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:\ProgramData\data\registros.dat

Filesize
184B

MD5
c568f965b700d11db3d6d75a0dede1cd

SHA1
32085965c3acf6a98ef508c975d5d0502279400c

SHA256
79eb97576f67831d5d73b4c527a792a1922fa1abb0fac28a9d61fb398985f104

SHA512
e553336f81ff030ffddc3493659aeb9620cb05795c816167114f3c1f2d6502cb0b6ce44d23e74187d19cec39a266d3222f5223e31da08d14f9b67f71dddfd944

Download Submit
C:\Users\Admin\AppData\Local\Temp\utkebdzuxrbycpniohdnorjrbkcil.vbs

Filesize
600B

MD5
5aa531f420d90dafdd0292a21e6b49fd

SHA1
908f79587afaae367de09de1e27c6864fe5ee405

SHA256
55f3e83a990fbda9244217086a43c61e6f614bfe9beb5139922faee5f4e57fc3

SHA512
f592a530023ace339e286ef4cf1a250742e4b126117045c33b2cefdcd7c17148291665d8b66ce82c6a7335085f359065c8319d0d59582a5fce1c830cbd5b439f

Download Submit
memory/368-5-0x0000000000C70000-0x0000000000CEF000-memory.dmp

Filesize
508KB

Download
memory/368-13-0x0000000000C70000-0x0000000000CEF000-memory.dmp

Filesize
508KB

Download
memory/368-4-0x0000000000C70000-0x0000000000CEF000-memory.dmp

Filesize
508KB

Download
memory/368-37-0x0000000000C70000-0x0000000000CEF000-memory.dmp

Filesize
508KB

Download
memory/368-8-0x0000000000C70000-0x0000000000CEF000-memory.dmp

Filesize
508KB

Download
memory/368-10-0x0000000000400000-0x0000000000C6C000-memory.dmp

Filesize
8.4MB

Download
memory/368-9-0x0000000000C70000-0x0000000000CEF000-memory.dmp

Filesize
508KB

Download
memory/368-11-0x0000000000C70000-0x0000000000CEF000-memory.dmp

Filesize
508KB

Download
memory/368-12-0x0000000000C70000-0x0000000000CEF000-memory.dmp

Filesize
508KB

Download
memory/368-3-0x0000000000C70000-0x0000000000CEF000-memory.dmp

Filesize
508KB

Download
memory/368-16-0x0000000000C70000-0x0000000000CEF000-memory.dmp

Filesize
508KB

Download
memory/368-20-0x0000000000C70000-0x0000000000CEF000-memory.dmp

Filesize
508KB

Download
memory/368-21-0x0000000000C70000-0x0000000000CEF000-memory.dmp

Filesize
508KB

Download
memory/368-2-0x0000000000C70000-0x0000000000CEF000-memory.dmp

Filesize
508KB

Download
memory/368-28-0x0000000000C70000-0x0000000000CEF000-memory.dmp

Filesize
508KB

Download
memory/368-31-0x0000000000C70000-0x0000000000CEF000-memory.dmp

Filesize
508KB

Download
memory/368-34-0x0000000000C70000-0x0000000000CEF000-memory.dmp

Filesize
508KB

Download
memory/2544-0-0x000000000082B000-0x000000000082F000-memory.dmp

Filesize
16KB

Download
memory/2544-1-0x0000000000400000-0x0000000000C6C000-memory.dmp

Filesize
8.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads