remcos | e037f166b8e3066f5b8fc2f4dea6cf0d052dde5234b46c81e3d5ecf73dc713c2

General

Target

e7d36392836c350b47e1e485465f2446_JaffaCakes118.exe
Size

648KB
MD5

e7d36392836c350b47e1e485465f2446
SHA1

b4cfaca779557d14cbccf09accefaf4ec8cec30e
SHA256

e037f166b8e3066f5b8fc2f4dea6cf0d052dde5234b46c81e3d5ecf73dc713c2
SHA512

c6f530cbfcf8d145e06c7850b1c51f2dc9efbd893229d12a2fe035be89d3c32979c803f4122f77278aa7d3595f70b99cd3fb867adeaea51fbafbaae7d265a3a1
SSDEEP

6144:DHtgbfyyNili9mp2kS4/JfrtkXl5w5R0koDQY1/rIPpGV8eY2M:TtcK+iEJ6RraXfwBoUY1/r8KB

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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	e7d36392836c350b47e1e485465f2446_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	WScript.exe

Executes dropped EXE 1 IoCs

pid	Process
640	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-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\hgfgihdgjyf = "\"C:\\Users\\Admin\\AppData\\Roaming\\RemD\\RemD.exe\""	e7d36392836c350b47e1e485465f2446_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\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 640 set thread context of 1320	640	RemD.exe	96

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	e7d36392836c350b47e1e485465f2446_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-1-5-21-2392887640-1187051047-2909758433-1000_Classes\Local Settings	e7d36392836c350b47e1e485465f2446_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3944	e7d36392836c350b47e1e485465f2446_JaffaCakes118.exe
640	RemD.exe
640	RemD.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 3944 wrote to memory of 2112	3944	e7d36392836c350b47e1e485465f2446_JaffaCakes118.exe	92
PID 3944 wrote to memory of 2112	3944	e7d36392836c350b47e1e485465f2446_JaffaCakes118.exe	92
PID 3944 wrote to memory of 2112	3944	e7d36392836c350b47e1e485465f2446_JaffaCakes118.exe	92
PID 2112 wrote to memory of 2396	2112	WScript.exe	93
PID 2112 wrote to memory of 2396	2112	WScript.exe	93
PID 2112 wrote to memory of 2396	2112	WScript.exe	93
PID 2396 wrote to memory of 640	2396	cmd.exe	95
PID 2396 wrote to memory of 640	2396	cmd.exe	95
PID 2396 wrote to memory of 640	2396	cmd.exe	95
PID 640 wrote to memory of 1320	640	RemD.exe	96
PID 640 wrote to memory of 1320	640	RemD.exe	96
PID 640 wrote to memory of 1320	640	RemD.exe	96
PID 640 wrote to memory of 1320	640	RemD.exe	96
PID 640 wrote to memory of 1320	640	RemD.exe	96
PID 640 wrote to memory of 1320	640	RemD.exe	96
PID 640 wrote to memory of 1320	640	RemD.exe	96
PID 640 wrote to memory of 1320	640	RemD.exe	96
PID 640 wrote to memory of 1320	640	RemD.exe	96
PID 640 wrote to memory of 1320	640	RemD.exe	96

C:\Users\Admin\AppData\Local\Temp\e7d36392836c350b47e1e485465f2446_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e7d36392836c350b47e1e485465f2446_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:3944
- 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:2112
- - 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:2396
  - - 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:640
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe
        5⤵
        
        PID:1320

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
648KB

MD5
e7d36392836c350b47e1e485465f2446

SHA1
b4cfaca779557d14cbccf09accefaf4ec8cec30e

SHA256
e037f166b8e3066f5b8fc2f4dea6cf0d052dde5234b46c81e3d5ecf73dc713c2

SHA512
c6f530cbfcf8d145e06c7850b1c51f2dc9efbd893229d12a2fe035be89d3c32979c803f4122f77278aa7d3595f70b99cd3fb867adeaea51fbafbaae7d265a3a1

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

Filesize
79B

MD5
867a9af04572d38b14808510b727b2b4

SHA1
196fcd889278a535806805d5be33a26c3dc2db14

SHA256
3e0d7eb1a37b29442141e37eb0c399e749d0282062d2c48dc3d38fa35fcc78af

SHA512
aab413a2b82dec8d8147faf1f5575a74650984afa93509256887d26bc36a4378ec578c0668fae28953ac479120488e1287348de580a5c90f3d2e24334cf9fba5

Download Submit
memory/640-21-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/640-18-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/1320-23-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/3944-2-0x0000000077041000-0x0000000077161000-memory.dmp

Filesize
1.1MB

Download
memory/3944-4-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/3944-7-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3944-10-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads