remcos | 2fad5192692c080dd477ed2ba9b36585fe6b59dc3467232b172ed5f959c90b65

General

Target

d28f5e69950f64cac9e022fad2171b26_JaffaCakes118.exe
Size

196KB
MD5

d28f5e69950f64cac9e022fad2171b26
SHA1

bf578f1b87c9826ffca611a58fa831b2e8732bb9
SHA256

2fad5192692c080dd477ed2ba9b36585fe6b59dc3467232b172ed5f959c90b65
SHA512

d2b420a7351356430ce4712e74c27fc1f8bf3fc592395240cd606233500b50689dcb1c7b5d8399ba4f126ab5b0eaa7f6174ef0c622161c430eb466383faa967e
SSDEEP

6144:+f80VIoP6JGZdcYfeb74ePLOza8o2VHf:+fXVrYGbneb8sO2lKf

Score

10^/10

remcos discovery persistence rat

Malware Config

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-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	d28f5e69950f64cac9e022fad2171b26_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
2836	HDPeal.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-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\KLGmkG = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microfiles2\\HDPeal.exe\""	d28f5e69950f64cac9e022fad2171b26_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\KLGmkG = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microfiles2\\HDPeal.exe\""	HDPeal.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2836 set thread context of 3240	2836	HDPeal.exe	97

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	HDPeal.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d28f5e69950f64cac9e022fad2171b26_JaffaCakes118.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
1600	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1600	PING.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
3624	d28f5e69950f64cac9e022fad2171b26_JaffaCakes118.exe
3624	d28f5e69950f64cac9e022fad2171b26_JaffaCakes118.exe
2836	HDPeal.exe
2836	HDPeal.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
3624	d28f5e69950f64cac9e022fad2171b26_JaffaCakes118.exe
3624	d28f5e69950f64cac9e022fad2171b26_JaffaCakes118.exe
2836	HDPeal.exe
2836	HDPeal.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3624	d28f5e69950f64cac9e022fad2171b26_JaffaCakes118.exe
2836	HDPeal.exe
2836	HDPeal.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 3624 wrote to memory of 3680	3624	d28f5e69950f64cac9e022fad2171b26_JaffaCakes118.exe	93
PID 3624 wrote to memory of 3680	3624	d28f5e69950f64cac9e022fad2171b26_JaffaCakes118.exe	93
PID 3624 wrote to memory of 3680	3624	d28f5e69950f64cac9e022fad2171b26_JaffaCakes118.exe	93
PID 3680 wrote to memory of 1600	3680	cmd.exe	95
PID 3680 wrote to memory of 1600	3680	cmd.exe	95
PID 3680 wrote to memory of 1600	3680	cmd.exe	95
PID 3680 wrote to memory of 2836	3680	cmd.exe	96
PID 3680 wrote to memory of 2836	3680	cmd.exe	96
PID 3680 wrote to memory of 2836	3680	cmd.exe	96
PID 2836 wrote to memory of 3240	2836	HDPeal.exe	97
PID 2836 wrote to memory of 3240	2836	HDPeal.exe	97
PID 2836 wrote to memory of 3240	2836	HDPeal.exe	97
PID 2836 wrote to memory of 3240	2836	HDPeal.exe	97
PID 2836 wrote to memory of 3240	2836	HDPeal.exe	97
PID 2836 wrote to memory of 3240	2836	HDPeal.exe	97
PID 2836 wrote to memory of 3240	2836	HDPeal.exe	97
PID 2836 wrote to memory of 3240	2836	HDPeal.exe	97
PID 2836 wrote to memory of 3240	2836	HDPeal.exe	97
PID 2836 wrote to memory of 3240	2836	HDPeal.exe	97

C:\Users\Admin\AppData\Local\Temp\d28f5e69950f64cac9e022fad2171b26_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d28f5e69950f64cac9e022fad2171b26_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3624
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3680
- - C:\Windows\SysWOW64\PING.EXE
    PING 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1600
- - C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe
    "C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2836
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe
      4⤵
      PID:3240

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

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
104B

MD5
9e63d0d86376e45cfd856537efb86171

SHA1
566c68ff9c1f2fa5a75207258b1092447e81fcce

SHA256
6f6f2f859525c5c8668364d9feb6da278eee5ed59580a5184e8dda65832cce7d

SHA512
d5359f1a3701a010c3fb90faac3da226881c6777dd7e1bfaf475cef0f18f6dfab9f317ac3431daa77869b2872f5a5c9a16cad10bc51a5d127219a095df7ccb98

Download Submit
C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe

Filesize
196KB

MD5
d28f5e69950f64cac9e022fad2171b26

SHA1
bf578f1b87c9826ffca611a58fa831b2e8732bb9

SHA256
2fad5192692c080dd477ed2ba9b36585fe6b59dc3467232b172ed5f959c90b65

SHA512
d2b420a7351356430ce4712e74c27fc1f8bf3fc592395240cd606233500b50689dcb1c7b5d8399ba4f126ab5b0eaa7f6174ef0c622161c430eb466383faa967e

Download Submit
memory/2836-28-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2836-36-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2836-35-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2836-34-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2836-26-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2836-20-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2836-22-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2836-25-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/3240-29-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/3240-32-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/3624-13-0x0000000077551000-0x0000000077671000-memory.dmp

Filesize
1.1MB

Download
memory/3624-2-0x0000000077551000-0x0000000077671000-memory.dmp

Filesize
1.1MB

Download
memory/3624-11-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/3624-8-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/3624-4-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads