remcos | cee279204b9fc45dae530e1a4276ec6475d258e6e788e7c902fd066c5ec4cad0

General

Target

ef3967ac2859ead45eec9cd5e8c39e3e_JaffaCakes118.exe
Size

544KB
MD5

ef3967ac2859ead45eec9cd5e8c39e3e
SHA1

1051ab4b858f3350228954305bea2fbc1db3e210
SHA256

cee279204b9fc45dae530e1a4276ec6475d258e6e788e7c902fd066c5ec4cad0
SHA512

284ce92f4acb1131fed3627986c3849bdd280c372d6dc087cccec38e8ab909de17b5be454513b5cb2e3ee8129acbe345115c42e7e3e1e659f8b02e236eafd5b2
SSDEEP

6144:mKlaXKNcgCtFP/S0Tl2LzkMTPLNtN6efcZLh+yQTfrgK37T35bCvgm7:a6NcPF/ScEkcNrfct0970uT35

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 2 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	ef3967ac2859ead45eec9cd5e8c39e3e_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	WScript.exe

Executes dropped EXE 1 IoCs

pid	Process
3276	RemD.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-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\hgfgihdgjyf = "\"C:\\Users\\Admin\\AppData\\Roaming\\RemD\\RemD.exe\""	ef3967ac2859ead45eec9cd5e8c39e3e_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\hgfgihdgjyf = "\"C:\\Users\\Admin\\AppData\\Roaming\\RemD\\RemD.exe\""	RemD.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3276 set thread context of 4716	3276	RemD.exe	93

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	ef3967ac2859ead45eec9cd5e8c39e3e_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	RemD.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000_Classes\Local Settings	ef3967ac2859ead45eec9cd5e8c39e3e_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2568	ef3967ac2859ead45eec9cd5e8c39e3e_JaffaCakes118.exe
3276	RemD.exe
3276	RemD.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2568 wrote to memory of 2812	2568	ef3967ac2859ead45eec9cd5e8c39e3e_JaffaCakes118.exe	89
PID 2568 wrote to memory of 2812	2568	ef3967ac2859ead45eec9cd5e8c39e3e_JaffaCakes118.exe	89
PID 2568 wrote to memory of 2812	2568	ef3967ac2859ead45eec9cd5e8c39e3e_JaffaCakes118.exe	89
PID 2812 wrote to memory of 5004	2812	WScript.exe	90
PID 2812 wrote to memory of 5004	2812	WScript.exe	90
PID 2812 wrote to memory of 5004	2812	WScript.exe	90
PID 5004 wrote to memory of 3276	5004	cmd.exe	92
PID 5004 wrote to memory of 3276	5004	cmd.exe	92
PID 5004 wrote to memory of 3276	5004	cmd.exe	92
PID 3276 wrote to memory of 4716	3276	RemD.exe	93
PID 3276 wrote to memory of 4716	3276	RemD.exe	93
PID 3276 wrote to memory of 4716	3276	RemD.exe	93
PID 3276 wrote to memory of 4716	3276	RemD.exe	93
PID 3276 wrote to memory of 4716	3276	RemD.exe	93
PID 3276 wrote to memory of 4716	3276	RemD.exe	93
PID 3276 wrote to memory of 4716	3276	RemD.exe	93
PID 3276 wrote to memory of 4716	3276	RemD.exe	93
PID 3276 wrote to memory of 4716	3276	RemD.exe	93
PID 3276 wrote to memory of 4716	3276	RemD.exe	93

C:\Users\Admin\AppData\Local\Temp\ef3967ac2859ead45eec9cd5e8c39e3e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ef3967ac2859ead45eec9cd5e8c39e3e_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2568
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2812
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\RemD\RemD.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5004
  - - C:\Users\Admin\AppData\Roaming\RemD\RemD.exe
      C:\Users\Admin\AppData\Roaming\RemD\RemD.exe
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:3276
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe
        5⤵
        
        PID:4716

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

Filesize
410B

MD5
991cad69a8a5ac8e22281a335b88e2b3

SHA1
58568a006ade6e2ca7fa25673b036bcefa303a7d

SHA256
95d975c5b36f23f9121390f8f4a1373b1cbb8045765e1c9fa68e114e2f592d60

SHA512
298dc73384bf23e913f9a92e83040d84171ef86630652f82f73367fec9e6c61eb8a6055afe03d997870e529e4e88c0f9571b6da8ca934311afdbb67aca3132ba

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

Filesize
544KB

MD5
ef3967ac2859ead45eec9cd5e8c39e3e

SHA1
1051ab4b858f3350228954305bea2fbc1db3e210

SHA256
cee279204b9fc45dae530e1a4276ec6475d258e6e788e7c902fd066c5ec4cad0

SHA512
284ce92f4acb1131fed3627986c3849bdd280c372d6dc087cccec38e8ab909de17b5be454513b5cb2e3ee8129acbe345115c42e7e3e1e659f8b02e236eafd5b2

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

Filesize
79B

MD5
2a65526ad9136c9c075a8a132d8f23b2

SHA1
06e3d9e92549cb637982c36f52c2bbf9f33e8eaa

SHA256
b8a967e8a980750d704b7666d38cd145d16cb9d57b2a9e12d4fe364c6404f42a

SHA512
d9b5e8c7fa4707d7c654e2d3dd2f99d6634d94e03c97a0185e82c4e398e8de8a7b83f38edb481c8eb7aab9085482020ba6fa661aae221c766bae7b9d71e74916

Download Submit
memory/2568-2-0x0000000077341000-0x0000000077461000-memory.dmp

Filesize
1.1MB

Download
memory/2568-4-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2568-7-0x0000000000400000-0x0000000000488000-memory.dmp

Filesize
544KB

Download
memory/2568-13-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2568-12-0x0000000077341000-0x0000000077461000-memory.dmp

Filesize
1.1MB

Download
memory/3276-20-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/3276-24-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/3276-23-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4716-25-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads