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

Executes dropped EXE 1 IoCs

pid	Process
2708	RemD.exe

Loads dropped DLL 2 IoCs

pid	Process
2212	cmd.exe
2212	cmd.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-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Windows\CurrentVersion\Run\hgfgihdgjyf = "\"C:\\Users\\Admin\\AppData\\Roaming\\RemD\\RemD.exe\""	e7d36392836c350b47e1e485465f2446_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\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 2708 set thread context of 2900	2708	RemD.exe	35

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

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2576	e7d36392836c350b47e1e485465f2446_JaffaCakes118.exe
2708	RemD.exe
2708	RemD.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2576	e7d36392836c350b47e1e485465f2446_JaffaCakes118.exe
2708	RemD.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2576 wrote to memory of 2532	2576	e7d36392836c350b47e1e485465f2446_JaffaCakes118.exe	30
PID 2576 wrote to memory of 2532	2576	e7d36392836c350b47e1e485465f2446_JaffaCakes118.exe	30
PID 2576 wrote to memory of 2532	2576	e7d36392836c350b47e1e485465f2446_JaffaCakes118.exe	30
PID 2576 wrote to memory of 2532	2576	e7d36392836c350b47e1e485465f2446_JaffaCakes118.exe	30
PID 2532 wrote to memory of 2212	2532	WScript.exe	31
PID 2532 wrote to memory of 2212	2532	WScript.exe	31
PID 2532 wrote to memory of 2212	2532	WScript.exe	31
PID 2532 wrote to memory of 2212	2532	WScript.exe	31
PID 2212 wrote to memory of 2708	2212	cmd.exe	33
PID 2212 wrote to memory of 2708	2212	cmd.exe	33
PID 2212 wrote to memory of 2708	2212	cmd.exe	33
PID 2212 wrote to memory of 2708	2212	cmd.exe	33
PID 2708 wrote to memory of 2900	2708	RemD.exe	35
PID 2708 wrote to memory of 2900	2708	RemD.exe	35
PID 2708 wrote to memory of 2900	2708	RemD.exe	35
PID 2708 wrote to memory of 2900	2708	RemD.exe	35
PID 2708 wrote to memory of 2900	2708	RemD.exe	35
PID 2708 wrote to memory of 2900	2708	RemD.exe	35
PID 2708 wrote to memory of 2900	2708	RemD.exe	35
PID 2708 wrote to memory of 2900	2708	RemD.exe	35
PID 2708 wrote to memory of 2900	2708	RemD.exe	35
PID 2708 wrote to memory of 2900	2708	RemD.exe	35
PID 2708 wrote to memory of 2900	2708	RemD.exe	35

C:\Users\Admin\AppData\Local\Temp\e7d36392836c350b47e1e485465f2446_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e7d36392836c350b47e1e485465f2446_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2576
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2532
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\RemD\RemD.exe"
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2212
  - - 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 UnmapMainImage
      Suspicious use of WriteProcessMemory
      PID:2708
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe
        5⤵
        
        PID:2900

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

System Information Discovery

1

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
4c5a202abda4dc922459e6a263e3eb3f

SHA1
c9b493ec437e1fbf68b28e7ba972c26b7dd6f90f

SHA256
a1c61aea64b28a71f979c19f47cd92065ebdf12249e8d7fc22255cd5f7aafbe1

SHA512
e14001b4a956838e96c76c2b94bd1f2384df16aa77dbb2c4d8955d095c541a254b23dd80d34bc4c395459c84e7198c389d4f05c631674fb4e2edcc5bacd7a02a

Download Submit
memory/2576-3-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2576-4-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2576-7-0x0000000072940000-0x0000000072A60000-memory.dmp

Filesize
1.1MB

Download
memory/2576-10-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2576-11-0x0000000072940000-0x0000000072A60000-memory.dmp

Filesize
1.1MB

Download
memory/2576-2-0x0000000077CB0000-0x0000000077D86000-memory.dmp

Filesize
856KB

Download
memory/2708-19-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2708-22-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2900-32-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2900-37-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2900-36-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2900-34-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2900-30-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2900-28-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2900-26-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2900-24-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads