remcos | 1dacdded73c4cf1270303e47ce3f12a5acdf7881eea7487231115e2be20aea5f

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
17-09-2024 05:51

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe
Size

893KB
MD5

e62c6746f84f89027d8924786fbe3280
SHA1

1b5c55ebe31f1588d0d677e81d68bb11a48be894
SHA256

1dacdded73c4cf1270303e47ce3f12a5acdf7881eea7487231115e2be20aea5f
SHA512

4233989e6594ab17d20d2d9b7397552e652028ab99b081fde885067904d0e949e564a5d9131dcd5a4b2a2cc3573437047dc29d0bfb385e88b8685f203001cb99
SSDEEP

12288:qBtwEru0VeNlhjfdF+/gKzfYIPI/Lj9tjAYpGo9pIt+9Hc+S2VLgxVQFt9M6sDPE:qNolhRczxILj3AVoIF2h+Cnbs7E

Score

10^/10

remcos remotehost discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

3.1.0 Pro

Botnet

RemoteHost

berryttttiere.duckdns.org:6553

asddskfjjer.duckdns.org:6553

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
true
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-Q3VG56
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 4 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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	remcos.exe

Executes dropped EXE 2 IoCs

pid	Process
4708	remcos.exe
4516	remcos.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\""	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\""	remcos.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3480 set thread context of 1572	3480	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe	94
PID 4708 set thread context of 4516	4708	remcos.exe	101

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 8 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	remcos.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	remcos.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_Classes\Local Settings	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1704	schtasks.exe
880	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3480	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe
3480	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3480	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4516	remcos.exe

Suspicious use of WriteProcessMemory 45 IoCs

description	pid	Process	procid_target
PID 3480 wrote to memory of 1704	3480	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe	91
PID 3480 wrote to memory of 1704	3480	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe	91
PID 3480 wrote to memory of 1704	3480	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe	91
PID 3480 wrote to memory of 1396	3480	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe	93
PID 3480 wrote to memory of 1396	3480	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe	93
PID 3480 wrote to memory of 1396	3480	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe	93
PID 3480 wrote to memory of 1572	3480	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe	94
PID 3480 wrote to memory of 1572	3480	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe	94
PID 3480 wrote to memory of 1572	3480	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe	94
PID 3480 wrote to memory of 1572	3480	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe	94
PID 3480 wrote to memory of 1572	3480	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe	94
PID 3480 wrote to memory of 1572	3480	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe	94
PID 3480 wrote to memory of 1572	3480	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe	94
PID 3480 wrote to memory of 1572	3480	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe	94
PID 3480 wrote to memory of 1572	3480	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe	94
PID 3480 wrote to memory of 1572	3480	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe	94
PID 3480 wrote to memory of 1572	3480	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe	94
PID 3480 wrote to memory of 1572	3480	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe	94
PID 1572 wrote to memory of 1068	1572	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe	95
PID 1572 wrote to memory of 1068	1572	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe	95
PID 1572 wrote to memory of 1068	1572	e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe	95
PID 1068 wrote to memory of 3016	1068	WScript.exe	96
PID 1068 wrote to memory of 3016	1068	WScript.exe	96
PID 1068 wrote to memory of 3016	1068	WScript.exe	96
PID 3016 wrote to memory of 4708	3016	cmd.exe	98
PID 3016 wrote to memory of 4708	3016	cmd.exe	98
PID 3016 wrote to memory of 4708	3016	cmd.exe	98
PID 4708 wrote to memory of 880	4708	remcos.exe	99
PID 4708 wrote to memory of 880	4708	remcos.exe	99
PID 4708 wrote to memory of 880	4708	remcos.exe	99
PID 4708 wrote to memory of 4516	4708	remcos.exe	101
PID 4708 wrote to memory of 4516	4708	remcos.exe	101
PID 4708 wrote to memory of 4516	4708	remcos.exe	101
PID 4708 wrote to memory of 4516	4708	remcos.exe	101
PID 4708 wrote to memory of 4516	4708	remcos.exe	101
PID 4708 wrote to memory of 4516	4708	remcos.exe	101
PID 4708 wrote to memory of 4516	4708	remcos.exe	101
PID 4708 wrote to memory of 4516	4708	remcos.exe	101
PID 4708 wrote to memory of 4516	4708	remcos.exe	101
PID 4708 wrote to memory of 4516	4708	remcos.exe	101
PID 4708 wrote to memory of 4516	4708	remcos.exe	101
PID 4708 wrote to memory of 4516	4708	remcos.exe	101
PID 4516 wrote to memory of 244	4516	remcos.exe	102
PID 4516 wrote to memory of 244	4516	remcos.exe	102
PID 4516 wrote to memory of 244	4516	remcos.exe	102

C:\Users\Admin\AppData\Local\Temp\e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3480
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wOqvUC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1D66.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1704
- C:\Users\Admin\AppData\Local\Temp\e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe
  "{path}"
  2⤵
  PID:1396
- C:\Users\Admin\AppData\Local\Temp\e62c6746f84f89027d8924786fbe3280_JaffaCakes118.exe
  "{path}"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1572
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
    3⤵
    - Checks computer location settings
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1068
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:3016
    - - C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
        
        C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
        5⤵
        Checks computer location settings
        Executes dropped EXE
        Suspicious use of SetThreadContext
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:4708
      - C:\Windows\SysWOW64\schtasks.exe
        
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wOqvUC" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAC97.tmp"
        6⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:880
      - C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
        
        "{path}"
        6⤵
        Executes dropped EXE
        Adds Run key to start application
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:4516
        
        C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe
        7⤵
        
        PID:244

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\install.vbs

Filesize
418B

MD5
b92d64fe5b1d1f59df4b738262aea8df

SHA1
c8fb1981759c2d9bb2ec91b705985fba5fc7af63

SHA256
fa20e9aab03dc8e9f1910aaf0cf42662379fa16ae3a22642084fb97fa3d4f83a

SHA512
2566248b93c0cfb0414f033b8dd18bbd4f88180093eac2861107289bcb4ee160f9593706ff1f7d1f2e4ecea430d67a5a2897551a4f9ebd82b707243e300520e2

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp1D66.tmp

Filesize
1KB

MD5
aa1293b9cda53c9b6eeccb94b433284c

SHA1
37b2ae58cbee47053978a9354f5bf12bddc98e67

SHA256
98ab6cefa4ae411ec841d4cb06879d8380a62b9fac775730c0f2e2efa7945414

SHA512
b5bf0aa9469db428456d78aa600916dfca553879987fde2275d89f5544d9b308ad6da180b429edda4146ac49a61baafa041ee18dfa4c083aa21ec172160670f5

Download Submit
C:\Users\Admin\AppData\Roaming\Remcos\logs.dat

Filesize
74B

MD5
81098bdc4b6dfae1bd6bf33c4948e29f

SHA1
184d1a97c6589881ce0168af9767c876c435ce38

SHA256
151311b5c8145f616e70b5f97985fed7fb90043977b79301193ca2efed28f362

SHA512
4cae8af150da8737b99f677763cf7cbc70ea3056c7cec15b1b44bf980ff5488a3bc70c8f5a12e9ea1020dee24d0acd6cf3fcd59608f752dadf66751a8be95a6d

Download Submit
C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe

Filesize
893KB

MD5
e62c6746f84f89027d8924786fbe3280

SHA1
1b5c55ebe31f1588d0d677e81d68bb11a48be894

SHA256
1dacdded73c4cf1270303e47ce3f12a5acdf7881eea7487231115e2be20aea5f

SHA512
4233989e6594ab17d20d2d9b7397552e652028ab99b081fde885067904d0e949e564a5d9131dcd5a4b2a2cc3573437047dc29d0bfb385e88b8685f203001cb99

Download Submit
memory/1572-14-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1572-17-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1572-24-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1572-20-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1572-15-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3480-10-0x00000000081D0000-0x00000000082A0000-memory.dmp

Filesize
832KB

Download
memory/3480-23-0x00000000743D0000-0x0000000074B80000-memory.dmp

Filesize
7.7MB

Download
memory/3480-4-0x00000000743D0000-0x0000000074B80000-memory.dmp

Filesize
7.7MB

Download
memory/3480-0-0x00000000743DE000-0x00000000743DF000-memory.dmp

Filesize
4KB

Download
memory/3480-9-0x00000000743D0000-0x0000000074B80000-memory.dmp

Filesize
7.7MB

Download
memory/3480-8-0x00000000743DE000-0x00000000743DF000-memory.dmp

Filesize
4KB

Download
memory/3480-7-0x0000000005340000-0x0000000005352000-memory.dmp

Filesize
72KB

Download
memory/3480-5-0x0000000004F40000-0x0000000004F4A000-memory.dmp

Filesize
40KB

Download
memory/3480-6-0x0000000007BD0000-0x0000000007C6C000-memory.dmp

Filesize
624KB

Download
memory/3480-3-0x0000000004FA0000-0x0000000005032000-memory.dmp

Filesize
584KB

Download
memory/3480-2-0x00000000054B0000-0x0000000005A54000-memory.dmp

Filesize
5.6MB

Download
memory/3480-1-0x0000000000480000-0x0000000000566000-memory.dmp

Filesize
920KB

Download
memory/4516-36-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4516-34-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4516-41-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4516-39-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download