remcos | 2cbab4c9780503d1f7129cfe49eac3a053a86c3180c2593b57e5217024fd3a09

General

Target

2cbab4c9780503d1f7129cfe49eac3a053a86c3180c2593b57e5217024fd3a09.exe
Size

100KB
MD5

a6cd54aa3e07ad18d93608c4fad26e5a
SHA1

75ba30995c50d0ce6858f14d4575864c516f5334
SHA256

2cbab4c9780503d1f7129cfe49eac3a053a86c3180c2593b57e5217024fd3a09
SHA512

83399f1a98ed7477f89466f3a9dbfc7cb7a9e3a6b269d26ee09c58f91a83931353d1f7356446036d24dfbd75e3a391d129e264c52b1c897817145777ac7d13ec
SSDEEP

3072:LhzYTGWVvJ8f2v1TbPzuMsIFSHNThy+JP/P6br3J:LhzOv2fM13jsIFSHNT7P/P6X3J

Score

10^/10

remcos host discovery evasion persistence rat

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

188.120.241.61:777

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
ipinfo.exe
copy_folder
Ipdata
delete_file
false
hide_file
true
hide_keylog_file
true
install_flag
true
install_path
%AppData%
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
true
mutex
remcos_fwwcnrwpyg
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

Modifies WinLogon for persistence 2 TTPs 4 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Admin\\AppData\\Roaming\\Ipdata\\ipinfo.exe\""	2cbab4c9780503d1f7129cfe49eac3a053a86c3180c2593b57e5217024fd3a09.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\WINDOWS\\system32\\userinit.exe, \"C:\\Users\\Admin\\AppData\\Roaming\\Ipdata\\ipinfo.exe\""	2cbab4c9780503d1f7129cfe49eac3a053a86c3180c2593b57e5217024fd3a09.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Admin\\AppData\\Roaming\\Ipdata\\ipinfo.exe\""	ipinfo.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\WINDOWS\\system32\\userinit.exe, \"C:\\Users\\Admin\\AppData\\Roaming\\Ipdata\\ipinfo.exe\""	ipinfo.exe

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

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	2cbab4c9780503d1f7129cfe49eac3a053a86c3180c2593b57e5217024fd3a09.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	ipinfo.exe

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	2cbab4c9780503d1f7129cfe49eac3a053a86c3180c2593b57e5217024fd3a09.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Ipdata\\ipinfo.exe\""	2cbab4c9780503d1f7129cfe49eac3a053a86c3180c2593b57e5217024fd3a09.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	ipinfo.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Ipdata\\ipinfo.exe\""	ipinfo.exe

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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	2cbab4c9780503d1f7129cfe49eac3a053a86c3180c2593b57e5217024fd3a09.exe

Executes dropped EXE 1 IoCs

pid	Process
2492	ipinfo.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Ipdata\\ipinfo.exe\""	2cbab4c9780503d1f7129cfe49eac3a053a86c3180c2593b57e5217024fd3a09.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Ipdata\\ipinfo.exe\""	2cbab4c9780503d1f7129cfe49eac3a053a86c3180c2593b57e5217024fd3a09.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Ipdata\\ipinfo.exe\""	ipinfo.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Ipdata\\ipinfo.exe\""	ipinfo.exe

Modifies WinLogon 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\	2cbab4c9780503d1f7129cfe49eac3a053a86c3180c2593b57e5217024fd3a09.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\	ipinfo.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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ipinfo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2cbab4c9780503d1f7129cfe49eac3a053a86c3180c2593b57e5217024fd3a09.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
3500	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3500	PING.EXE

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2492	ipinfo.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3280 wrote to memory of 4500	3280	2cbab4c9780503d1f7129cfe49eac3a053a86c3180c2593b57e5217024fd3a09.exe	82
PID 3280 wrote to memory of 4500	3280	2cbab4c9780503d1f7129cfe49eac3a053a86c3180c2593b57e5217024fd3a09.exe	82
PID 3280 wrote to memory of 4500	3280	2cbab4c9780503d1f7129cfe49eac3a053a86c3180c2593b57e5217024fd3a09.exe	82
PID 4500 wrote to memory of 3500	4500	cmd.exe	84
PID 4500 wrote to memory of 3500	4500	cmd.exe	84
PID 4500 wrote to memory of 3500	4500	cmd.exe	84
PID 4500 wrote to memory of 2492	4500	cmd.exe	85
PID 4500 wrote to memory of 2492	4500	cmd.exe	85
PID 4500 wrote to memory of 2492	4500	cmd.exe	85

C:\Users\Admin\AppData\Local\Temp\2cbab4c9780503d1f7129cfe49eac3a053a86c3180c2593b57e5217024fd3a09.exe
"C:\Users\Admin\AppData\Local\Temp\2cbab4c9780503d1f7129cfe49eac3a053a86c3180c2593b57e5217024fd3a09.exe"
1⤵
- Modifies WinLogon for persistence
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Adds policy Run key to start application
- Checks computer location settings
- Adds Run key to start application
- Modifies WinLogon
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3280
- 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:4500
- - 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:3500
- - C:\Users\Admin\AppData\Roaming\Ipdata\ipinfo.exe
    "C:\Users\Admin\AppData\Roaming\Ipdata\ipinfo.exe"
    3⤵
    - Modifies WinLogon for persistence
    - Identifies VirtualBox via ACPI registry values (likely anti-VM)
    - Adds policy Run key to start application
    - Executes dropped EXE
    - Adds Run key to start application
    - Modifies WinLogon
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2492

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

4

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

2

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

4

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

2

T1547.004

Defense Evasion

Modify Registry

4

T1112

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

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

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
99B

MD5
e44b9b03b3b30eeaa6ed26622a682421

SHA1
b8c0810fac31bcac9d9d284b3b83af0ac9e4b1aa

SHA256
22129733ec9135eaa89cf82cf0f00c2f6ae3032471558fcf9cafd080ecc2ae9a

SHA512
1d969caab8be7f0ff7daa858806f7cfdba982dfd940541a83c61c7a5ba2a4e28500fd1d4703721b01bd958298406fed343def998f5dbbf1e4dd92309bd329f51

Download Submit
C:\Users\Admin\AppData\Roaming\Ipdata\ipinfo.exe

Filesize
100KB

MD5
a6cd54aa3e07ad18d93608c4fad26e5a

SHA1
75ba30995c50d0ce6858f14d4575864c516f5334

SHA256
2cbab4c9780503d1f7129cfe49eac3a053a86c3180c2593b57e5217024fd3a09

SHA512
83399f1a98ed7477f89466f3a9dbfc7cb7a9e3a6b269d26ee09c58f91a83931353d1f7356446036d24dfbd75e3a391d129e264c52b1c897817145777ac7d13ec

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads