remcos | 6496f5ecac28a4a31adaa379b396a1548ffa301176524194ba38193764450936

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09-01-2025 19:01

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General

Target

JaffaCakes118_cfe29ebcc1690baf081787f834e9e96e.exe
Size

249KB
MD5

cfe29ebcc1690baf081787f834e9e96e
SHA1

ce902fb1d7dfe5a4543ffba25bb9a2e681a9ce2e
SHA256

6496f5ecac28a4a31adaa379b396a1548ffa301176524194ba38193764450936
SHA512

a59fb25b55adbed01e0141b007b0582d18868f16e06d1b1ff28bf0db2ffcba1bf25c669b9e6128038b14b6518a18d98d8d9a6568904fa3a284a1bfda95b34108
SSDEEP

6144:Eq8mbJMkhBqyqj/LvFY0doWadJBYOayM3ZTFRZfBJNmC:Eq8DSBhqj/LFd+WYXbMpFRyC

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

xp19.ddns.net:1996

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
nnjk.exe
delete_file
false
hide_file
true
hide_keylog_file
false
install_flag
true
install_path
%AppData%
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_path
%AppData%
mouse_option
false
mutex
remcos_klyclegait
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
startup_value
win
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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_cfe29ebcc1690baf081787f834e9e96e.exe

Executes dropped EXE 2 IoCs

pid	Process
4756	nnjk.exe
460	nnjk.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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\win = "\"C:\\Users\\Admin\\AppData\\Roaming\\nnjk.exe\""	nnjk.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\win = "\"C:\\Users\\Admin\\AppData\\Roaming\\nnjk.exe\""	JaffaCakes118_cfe29ebcc1690baf081787f834e9e96e.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 808 set thread context of 3248	808	JaffaCakes118_cfe29ebcc1690baf081787f834e9e96e.exe	97
PID 4756 set thread context of 460	4756	nnjk.exe	103

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 5 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	nnjk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_cfe29ebcc1690baf081787f834e9e96e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_cfe29ebcc1690baf081787f834e9e96e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3444	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3444	PING.EXE

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
460	nnjk.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 808 wrote to memory of 3248	808	JaffaCakes118_cfe29ebcc1690baf081787f834e9e96e.exe	97
PID 808 wrote to memory of 3248	808	JaffaCakes118_cfe29ebcc1690baf081787f834e9e96e.exe	97
PID 808 wrote to memory of 3248	808	JaffaCakes118_cfe29ebcc1690baf081787f834e9e96e.exe	97
PID 808 wrote to memory of 3248	808	JaffaCakes118_cfe29ebcc1690baf081787f834e9e96e.exe	97
PID 808 wrote to memory of 3248	808	JaffaCakes118_cfe29ebcc1690baf081787f834e9e96e.exe	97
PID 808 wrote to memory of 3248	808	JaffaCakes118_cfe29ebcc1690baf081787f834e9e96e.exe	97
PID 808 wrote to memory of 3248	808	JaffaCakes118_cfe29ebcc1690baf081787f834e9e96e.exe	97
PID 808 wrote to memory of 3248	808	JaffaCakes118_cfe29ebcc1690baf081787f834e9e96e.exe	97
PID 808 wrote to memory of 3248	808	JaffaCakes118_cfe29ebcc1690baf081787f834e9e96e.exe	97
PID 3248 wrote to memory of 920	3248	JaffaCakes118_cfe29ebcc1690baf081787f834e9e96e.exe	98
PID 3248 wrote to memory of 920	3248	JaffaCakes118_cfe29ebcc1690baf081787f834e9e96e.exe	98
PID 3248 wrote to memory of 920	3248	JaffaCakes118_cfe29ebcc1690baf081787f834e9e96e.exe	98
PID 920 wrote to memory of 3444	920	cmd.exe	100
PID 920 wrote to memory of 3444	920	cmd.exe	100
PID 920 wrote to memory of 3444	920	cmd.exe	100
PID 920 wrote to memory of 4756	920	cmd.exe	101
PID 920 wrote to memory of 4756	920	cmd.exe	101
PID 920 wrote to memory of 4756	920	cmd.exe	101
PID 4756 wrote to memory of 460	4756	nnjk.exe	103
PID 4756 wrote to memory of 460	4756	nnjk.exe	103
PID 4756 wrote to memory of 460	4756	nnjk.exe	103
PID 4756 wrote to memory of 460	4756	nnjk.exe	103
PID 4756 wrote to memory of 460	4756	nnjk.exe	103
PID 4756 wrote to memory of 460	4756	nnjk.exe	103
PID 4756 wrote to memory of 460	4756	nnjk.exe	103
PID 4756 wrote to memory of 460	4756	nnjk.exe	103
PID 4756 wrote to memory of 460	4756	nnjk.exe	103

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cfe29ebcc1690baf081787f834e9e96e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cfe29ebcc1690baf081787f834e9e96e.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:808
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cfe29ebcc1690baf081787f834e9e96e.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cfe29ebcc1690baf081787f834e9e96e.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3248
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:920
  - - C:\Windows\SysWOW64\PING.EXE
      PING 127.0.0.1 -n 2
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:3444
  - - C:\Users\Admin\AppData\Roaming\nnjk.exe
      "C:\Users\Admin\AppData\Roaming\nnjk.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:4756
    - - C:\Users\Admin\AppData\Roaming\nnjk.exe
        
        "C:\Users\Admin\AppData\Roaming\nnjk.exe"
        5⤵
        Executes dropped EXE
        Adds Run key to start application
        Suspicious use of SetWindowsHookEx
        
        PID:460

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
90B

MD5
c5bf68a9c4ef68ada05fd13958411426

SHA1
1b3e759f56f075c780ac8bf1c7d14b8e8e2b715e

SHA256
df73ba3aa22460ea518c57c86ea84d52f3b87d6053d6e61a084b4f9e0fdf5e50

SHA512
051fcdb04233537f71c907a32b71ff65bba43275e6a123fd9b7b82971299fe3acabdb2131ae0d73145907e4b3aae62ea256c1a5f42267cb50e5ef58a6099980f

Download Submit
C:\Users\Admin\AppData\Roaming\nnjk.exe

Filesize
249KB

MD5
cfe29ebcc1690baf081787f834e9e96e

SHA1
ce902fb1d7dfe5a4543ffba25bb9a2e681a9ce2e

SHA256
6496f5ecac28a4a31adaa379b396a1548ffa301176524194ba38193764450936

SHA512
a59fb25b55adbed01e0141b007b0582d18868f16e06d1b1ff28bf0db2ffcba1bf25c669b9e6128038b14b6518a18d98d8d9a6568904fa3a284a1bfda95b34108

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memory/460-32-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/808-10-0x0000000006330000-0x0000000006370000-memory.dmp

Filesize
256KB

Download
memory/808-3-0x0000000004D90000-0x0000000004E22000-memory.dmp

Filesize
584KB

Download
memory/808-5-0x0000000004F50000-0x0000000004F5A000-memory.dmp

Filesize
40KB

Download
memory/808-6-0x00000000051C0000-0x00000000051CA000-memory.dmp

Filesize
40KB

Download
memory/808-7-0x0000000074D4E000-0x0000000074D4F000-memory.dmp

Filesize
4KB

Download
memory/808-8-0x0000000074D40000-0x00000000754F0000-memory.dmp

Filesize
7.7MB

Download
memory/808-9-0x00000000065D0000-0x000000000666C000-memory.dmp

Filesize
624KB

Download
memory/808-0-0x0000000074D4E000-0x0000000074D4F000-memory.dmp

Filesize
4KB

Download
memory/808-1-0x00000000003A0000-0x00000000003E4000-memory.dmp

Filesize
272KB

Download
memory/808-2-0x0000000005260000-0x0000000005804000-memory.dmp

Filesize
5.6MB

Download
memory/808-4-0x0000000074D40000-0x00000000754F0000-memory.dmp

Filesize
7.7MB

Download
memory/808-19-0x0000000074D40000-0x00000000754F0000-memory.dmp

Filesize
7.7MB

Download
memory/3248-22-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3248-15-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3248-14-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3248-11-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4756-27-0x0000000074D3E000-0x0000000074D3F000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads