remcos | 6210b1593a621ca0a0f0e0b8ec15d3646309351979056b876b3eb1f974c8ca51

General

Target

f963352218ff34a0c590fc21f4ed7c3d_JaffaCakes118.exe
Size

1.3MB
MD5

f963352218ff34a0c590fc21f4ed7c3d
SHA1

338036f7b30d67814c7454b541bcfac22eb6c969
SHA256

6210b1593a621ca0a0f0e0b8ec15d3646309351979056b876b3eb1f974c8ca51
SHA512

5a3978786ef8c1c109887ec989c6e0c64f54ea7a947ac74308babf7a88ffccf91a2fb614d1e4d31a85505a3af009345c03d00646ca7135d5a942be57d1187193
SSDEEP

24576:wKkwF2wI06FT/Vhm3Fecinj3v3eHQB9g+0Juk6Ij1gRT02V4H444h:wbwoTFtmYcijKQjR0k7IjKt064H444h

Score

10^/10

remcos remotehost discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

3.1.0 Pro

Botnet

RemoteHost

C2

richardd.camdvr.org:7801

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
false
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-ESNRML
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
wikipedia;solitaire;

Signatures

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

Core1 .NET packer 1 IoCs

Detects packer/loader used by .NET malware.

resource	yara_rule
behavioral2/memory/3640-2-0x000000001CE80000-0x000000001CF66000-memory.dmp	Core1

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\file.exe = "C:\\Users\\Admin\\AppData\\Roaming\\file\\file.exe"	f963352218ff34a0c590fc21f4ed7c3d_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3640 set thread context of 3860	3640	f963352218ff34a0c590fc21f4ed7c3d_JaffaCakes118.exe	84

System Location Discovery: System Language Discovery 1 TTPs 1 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	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3860	svchost.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3640 wrote to memory of 3860	3640	f963352218ff34a0c590fc21f4ed7c3d_JaffaCakes118.exe	84
PID 3640 wrote to memory of 3860	3640	f963352218ff34a0c590fc21f4ed7c3d_JaffaCakes118.exe	84
PID 3640 wrote to memory of 3860	3640	f963352218ff34a0c590fc21f4ed7c3d_JaffaCakes118.exe	84
PID 3640 wrote to memory of 3860	3640	f963352218ff34a0c590fc21f4ed7c3d_JaffaCakes118.exe	84
PID 3640 wrote to memory of 3860	3640	f963352218ff34a0c590fc21f4ed7c3d_JaffaCakes118.exe	84
PID 3640 wrote to memory of 3860	3640	f963352218ff34a0c590fc21f4ed7c3d_JaffaCakes118.exe	84
PID 3640 wrote to memory of 3860	3640	f963352218ff34a0c590fc21f4ed7c3d_JaffaCakes118.exe	84
PID 3640 wrote to memory of 3860	3640	f963352218ff34a0c590fc21f4ed7c3d_JaffaCakes118.exe	84
PID 3640 wrote to memory of 3860	3640	f963352218ff34a0c590fc21f4ed7c3d_JaffaCakes118.exe	84
PID 3640 wrote to memory of 3860	3640	f963352218ff34a0c590fc21f4ed7c3d_JaffaCakes118.exe	84
PID 3640 wrote to memory of 3860	3640	f963352218ff34a0c590fc21f4ed7c3d_JaffaCakes118.exe	84
PID 3640 wrote to memory of 3860	3640	f963352218ff34a0c590fc21f4ed7c3d_JaffaCakes118.exe	84

C:\Users\Admin\AppData\Local\Temp\f963352218ff34a0c590fc21f4ed7c3d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f963352218ff34a0c590fc21f4ed7c3d_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3640
- C:\Windows\SysWow64\svchost.exe
  "C:\\Windows\\SysWow64\\svchost.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:3860

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 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\Roaming\remcos\logs.dat

Filesize
74B

MD5
def27053e0ba4b29ea2c0b2b953b2d49

SHA1
4a35231e32d00c875da22ffa5bb0c75407f459fa

SHA256
92b1120cce301adafe154d56c38ba3066f3146758bf8608c237750c03011b6d8

SHA512
e7ccf25acbb4b1664a9b2d94adafb48aee8cfa0ef4dcd619f1b8ecbafc8ec1727f452b8d4b9fbadaa58ee4ded4e4ab3415ca294d4f3d6a0764857953c4fa4147

Download Submit
memory/3640-12-0x00007FFEAE600000-0x00007FFEAF0C1000-memory.dmp

Filesize
10.8MB

Download
memory/3640-1-0x0000000000C80000-0x0000000000DD8000-memory.dmp

Filesize
1.3MB

Download
memory/3640-2-0x000000001CE80000-0x000000001CF66000-memory.dmp

Filesize
920KB

Download
memory/3640-3-0x00000000038C0000-0x0000000003938000-memory.dmp

Filesize
480KB

Download
memory/3640-4-0x0000000001780000-0x0000000001796000-memory.dmp

Filesize
88KB

Download
memory/3640-5-0x00007FFEAE600000-0x00007FFEAF0C1000-memory.dmp

Filesize
10.8MB

Download
memory/3640-6-0x00000000017A0000-0x00000000017A4000-memory.dmp

Filesize
16KB

Download
memory/3640-0-0x00007FFEAE603000-0x00007FFEAE605000-memory.dmp

Filesize
8KB

Download
memory/3860-10-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3860-11-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3860-17-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3860-16-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3860-13-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3860-19-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3860-7-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads