remcos | 4e7c9fbc8e4e5d0476ba125569283ecc6cf5f2d8b78ee3edb765dd549016f463

General

Target

JaffaCakes118_4e7c9fbc8e4e5d0476ba125569283ecc6cf5f2d8b78ee3edb765dd549016f463.exe
Size

124KB
MD5

722eeea14abbf735445c0b3208c1b7b5
SHA1

ea5abe80e75fc0e419238933c174e004c6279fa1
SHA256

4e7c9fbc8e4e5d0476ba125569283ecc6cf5f2d8b78ee3edb765dd549016f463
SHA512

1262ee71c2f32a38d3894867105fe1ce5d889e2cebe4a3dfd630b57237ec4380eac321b687ce13259720cec274dfd603ce538dcbf5e4284c9ab1184cba677bdd
SSDEEP

3072:mlh1qaSs6IF9OK4b80S2Van4Va1cpcQjed5OzqhU8a:Ch1qn3IF9Obbj/a1cpcQjeHOzqhU8

Score

10^/10

remcos egommbute2020 discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

2.5.0 Pro

Botnet

EGOMMBUTE2020

C2

egommbute2020.ddns.net:7171

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
true
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-XWNA6D
screenshot_crypt
true
screenshot_flag
true
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
remcos
take_screenshot_option
true
take_screenshot_time
5
take_screenshot_title
wikipedia;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

Executes dropped EXE 1 IoCs

pid	Process
2156	remcos.exe

Loads dropped DLL 2 IoCs

pid	Process
2308	cmd.exe
2308	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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\remcos.exe\""	JaffaCakes118_4e7c9fbc8e4e5d0476ba125569283ecc6cf5f2d8b78ee3edb765dd549016f463.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\remcos.exe\""	remcos.exe

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	JaffaCakes118_4e7c9fbc8e4e5d0476ba125569283ecc6cf5f2d8b78ee3edb765dd549016f463.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	remcos.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2156	remcos.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2156	remcos.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 2440	2328	JaffaCakes118_4e7c9fbc8e4e5d0476ba125569283ecc6cf5f2d8b78ee3edb765dd549016f463.exe	30
PID 2328 wrote to memory of 2440	2328	JaffaCakes118_4e7c9fbc8e4e5d0476ba125569283ecc6cf5f2d8b78ee3edb765dd549016f463.exe	30
PID 2328 wrote to memory of 2440	2328	JaffaCakes118_4e7c9fbc8e4e5d0476ba125569283ecc6cf5f2d8b78ee3edb765dd549016f463.exe	30
PID 2328 wrote to memory of 2440	2328	JaffaCakes118_4e7c9fbc8e4e5d0476ba125569283ecc6cf5f2d8b78ee3edb765dd549016f463.exe	30
PID 2440 wrote to memory of 2308	2440	WScript.exe	31
PID 2440 wrote to memory of 2308	2440	WScript.exe	31
PID 2440 wrote to memory of 2308	2440	WScript.exe	31
PID 2440 wrote to memory of 2308	2440	WScript.exe	31
PID 2308 wrote to memory of 2156	2308	cmd.exe	33
PID 2308 wrote to memory of 2156	2308	cmd.exe	33
PID 2308 wrote to memory of 2156	2308	cmd.exe	33
PID 2308 wrote to memory of 2156	2308	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4e7c9fbc8e4e5d0476ba125569283ecc6cf5f2d8b78ee3edb765dd549016f463.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4e7c9fbc8e4e5d0476ba125569283ecc6cf5f2d8b78ee3edb765dd549016f463.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2328
- 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:2440
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\remcos\remcos.exe"
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2308
  - - C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
      C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      PID:2156

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
418B

MD5
ff449f6f7bc5e2d800eb30e2d2c56611

SHA1
93419ea805b9ce35a766e5c56db50d54c2d3f94b

SHA256
655787cf79040ee701963986320556a834d6345e850e03653e4852d94eb09416

SHA512
02a17064c837d36ba241fb8edf9266e33479a10eb8652b974158a3227878a801da29db1108413bb2c298a105b3c19bd20c3a3100f19444189f434706825766a6

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

Filesize
74B

MD5
980d94c6ccac7cbdb0f429ec45d72088

SHA1
f37bbced2c6fb7fc3175dfb261087f58c3115c29

SHA256
19da5d2086e54e9cab4afe1e29a45c8919234ed315184723a197837c6263f47e

SHA512
23c70bf897b6b2971fa294510efe73fa9e208711b9a2c71e680264a3b51c41be9acbb9bc3d4e983fec85912fa4331f1d180d43be5279d535f47f423c176436c8

Download Submit
\Users\Admin\AppData\Roaming\remcos\remcos.exe

Filesize
124KB

MD5
722eeea14abbf735445c0b3208c1b7b5

SHA1
ea5abe80e75fc0e419238933c174e004c6279fa1

SHA256
4e7c9fbc8e4e5d0476ba125569283ecc6cf5f2d8b78ee3edb765dd549016f463

SHA512
1262ee71c2f32a38d3894867105fe1ce5d889e2cebe4a3dfd630b57237ec4380eac321b687ce13259720cec274dfd603ce538dcbf5e4284c9ab1184cba677bdd

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads