remcos | 683b4a9a7e079c34a44a705f2f76e27b5fb405d526a093c8714c1aa538b90c1e

General

Target

80c124d62b319723e9c873d453db917f5637dc5c028028921b12c4963c63a8ad.exe
Size

92KB
MD5

8732b864f5608456c657a917cdaba34a
SHA1

76e79dd72a541b1fa68914e5da291d09a8d2b6b2
SHA256

80c124d62b319723e9c873d453db917f5637dc5c028028921b12c4963c63a8ad
SHA512

68c946968267a93bfa10d5519ed6a9bd9f7b45cccba8197b4d3d3d59724511c1026245cdfa6c8d6504b381f121b07832e371d51c0f68c550b94d52756e4805b2
SSDEEP

1536:YhhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESHNTh9E+JP19qkP6WrV:+hzYTGWVvJ8f2v1TbPzuMsIFSHNThy+r

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

192.168.0.18:2404

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
60
connect_interval
5
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_uxbpvpmrobvqvta
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
startup_value
remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
2908	remcos.exe

Loads dropped DLL 2 IoCs

pid	Process
2824	cmd.exe
2824	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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\remcos.exe\""	80c124d62b319723e9c873d453db917f5637dc5c028028921b12c4963c63a8ad.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\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	remcos.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	80c124d62b319723e9c873d453db917f5637dc5c028028921b12c4963c63a8ad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2728	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2728	PING.EXE

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2908	remcos.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2472 wrote to memory of 2824	2472	80c124d62b319723e9c873d453db917f5637dc5c028028921b12c4963c63a8ad.exe	30
PID 2472 wrote to memory of 2824	2472	80c124d62b319723e9c873d453db917f5637dc5c028028921b12c4963c63a8ad.exe	30
PID 2472 wrote to memory of 2824	2472	80c124d62b319723e9c873d453db917f5637dc5c028028921b12c4963c63a8ad.exe	30
PID 2472 wrote to memory of 2824	2472	80c124d62b319723e9c873d453db917f5637dc5c028028921b12c4963c63a8ad.exe	30
PID 2472 wrote to memory of 2824	2472	80c124d62b319723e9c873d453db917f5637dc5c028028921b12c4963c63a8ad.exe	30
PID 2472 wrote to memory of 2824	2472	80c124d62b319723e9c873d453db917f5637dc5c028028921b12c4963c63a8ad.exe	30
PID 2472 wrote to memory of 2824	2472	80c124d62b319723e9c873d453db917f5637dc5c028028921b12c4963c63a8ad.exe	30
PID 2824 wrote to memory of 2728	2824	cmd.exe	32
PID 2824 wrote to memory of 2728	2824	cmd.exe	32
PID 2824 wrote to memory of 2728	2824	cmd.exe	32
PID 2824 wrote to memory of 2728	2824	cmd.exe	32
PID 2824 wrote to memory of 2908	2824	cmd.exe	33
PID 2824 wrote to memory of 2908	2824	cmd.exe	33
PID 2824 wrote to memory of 2908	2824	cmd.exe	33
PID 2824 wrote to memory of 2908	2824	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\80c124d62b319723e9c873d453db917f5637dc5c028028921b12c4963c63a8ad.exe
"C:\Users\Admin\AppData\Local\Temp\80c124d62b319723e9c873d453db917f5637dc5c028028921b12c4963c63a8ad.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2472
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2824
- - C:\Windows\SysWOW64\PING.EXE
    PING 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2728
- - C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
    "C:\Users\Admin\AppData\Roaming\remcos\remcos.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2908

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

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\install.bat

Filesize
99B

MD5
76c1687d97dfdbcea62ef1490bec5001

SHA1
5f4d1aeafa7d840cde67b76f97416dd68efd1bed

SHA256
79f04ea049979ffd2232c459fdd57fae97a5255aea9b4a2c7dce7ead856f37a4

SHA512
da250f0628632a644f159d818a82a8b9cca8224e46843bddbe0f6f9c32a2d04f7736a620af49ab6d77616317ca7d68285e60043965fe86c03d940835bd30a925

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

Filesize
92KB

MD5
8732b864f5608456c657a917cdaba34a

SHA1
76e79dd72a541b1fa68914e5da291d09a8d2b6b2

SHA256
80c124d62b319723e9c873d453db917f5637dc5c028028921b12c4963c63a8ad

SHA512
68c946968267a93bfa10d5519ed6a9bd9f7b45cccba8197b4d3d3d59724511c1026245cdfa6c8d6504b381f121b07832e371d51c0f68c550b94d52756e4805b2

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads