remcos | 699abf96852cc3de1afffe9c511a5a502be39fa556d7d4372038def180c06911

General

Target

b102917f8e55549592c26990acc2fe53_JaffaCakes118.exe
Size

92KB
MD5

b102917f8e55549592c26990acc2fe53
SHA1

a2b23c6c23831185ac3c1f288bce0f86d183d463
SHA256

699abf96852cc3de1afffe9c511a5a502be39fa556d7d4372038def180c06911
SHA512

d6e63bd50f63199683de9d7b46afd9aec1e31d5b49cfc9313470db7e3e5618c6eb0330ee25026841f61bf028613c27c2d40faeac1340c4fec8478ffa576933f1
SSDEEP

1536:AhhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESHNTh9E+JP19qkP6Drx:GhzYTGWVvJ8f2v1TbPzuMsIFSHNThy+S

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

kohjguj.ydns.eu:7003

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
chrome.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_scdguhpptohtnqg
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

Checks computer location settings 2 TTPs 1 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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	b102917f8e55549592c26990acc2fe53_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
1616	chrome.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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\chrome.exe\""	b102917f8e55549592c26990acc2fe53_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\chrome.exe\""	chrome.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	b102917f8e55549592c26990acc2fe53_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chrome.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
3708	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3708	PING.EXE

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1616	chrome.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4980 wrote to memory of 4976	4980	b102917f8e55549592c26990acc2fe53_JaffaCakes118.exe	83
PID 4980 wrote to memory of 4976	4980	b102917f8e55549592c26990acc2fe53_JaffaCakes118.exe	83
PID 4980 wrote to memory of 4976	4980	b102917f8e55549592c26990acc2fe53_JaffaCakes118.exe	83
PID 4976 wrote to memory of 3708	4976	cmd.exe	85
PID 4976 wrote to memory of 3708	4976	cmd.exe	85
PID 4976 wrote to memory of 3708	4976	cmd.exe	85
PID 4976 wrote to memory of 1616	4976	cmd.exe	86
PID 4976 wrote to memory of 1616	4976	cmd.exe	86
PID 4976 wrote to memory of 1616	4976	cmd.exe	86

C:\Users\Admin\AppData\Local\Temp\b102917f8e55549592c26990acc2fe53_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b102917f8e55549592c26990acc2fe53_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4980
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4976
- - 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:3708
- - C:\Users\Admin\AppData\Roaming\remcos\chrome.exe
    "C:\Users\Admin\AppData\Roaming\remcos\chrome.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:1616

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

Remote System Discovery

1

T1018

System Information Discovery

2

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
5b402bcb0a79d6cab4eb9ac36a6369f4

SHA1
17f008c2c6c0436a826034340c5d4ffbe2ce63a0

SHA256
4e3fedd7bb87bf94149e6fb33a2c2a866d3f9fae73dbf1828e3440a7ba8126a3

SHA512
9d0f512b0037aa9da57cec927d3abaa35a038e5d64ecabe979e25410bf6ef5b17e36fbd275f6b1e3efdad6a8bc4db3f2b070ffdc8ebef2d029945f6d85643509

Download Submit
C:\Users\Admin\AppData\Roaming\remcos\chrome.exe

Filesize
92KB

MD5
b102917f8e55549592c26990acc2fe53

SHA1
a2b23c6c23831185ac3c1f288bce0f86d183d463

SHA256
699abf96852cc3de1afffe9c511a5a502be39fa556d7d4372038def180c06911

SHA512
d6e63bd50f63199683de9d7b46afd9aec1e31d5b49cfc9313470db7e3e5618c6eb0330ee25026841f61bf028613c27c2d40faeac1340c4fec8478ffa576933f1

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads