remcos | 9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d

General

Target

9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe
Size

959KB
MD5

6af2749e008b69261fb3221532e5e96e
SHA1

2ea58ea333f9de3455770c9da3047fe4e0d2bb73
SHA256

9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d
SHA512

e2edd970640102a258d18bd286c2c82139ac3e817eb0c25fa6f83548826f6e5b6624dc65d19acac13c4a424032d08bbd94bb88f827995371c04500cb1c2057da
SSDEEP

24576:0dFeeZbrWi6BoUgSjSxz6K511VRB1jubSogLgaIKkQM8B:Uzbmtj4v511VRB1ybSHLUjK

Score

10^/10

remcos remcohost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemcoHost

C2

173.211.106.233:2404

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-4WOIVV
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1820	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1916 set thread context of 2752	1916	9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe	32

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2772	1916	WerFault.exe	29

System Location Discovery: System Language Discovery 1 TTPs 3 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	9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1820	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1820	powershell.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1916 wrote to memory of 1820	1916	9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe	30
PID 1916 wrote to memory of 1820	1916	9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe	30
PID 1916 wrote to memory of 1820	1916	9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe	30
PID 1916 wrote to memory of 1820	1916	9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe	30
PID 1916 wrote to memory of 2752	1916	9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe	32
PID 1916 wrote to memory of 2752	1916	9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe	32
PID 1916 wrote to memory of 2752	1916	9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe	32
PID 1916 wrote to memory of 2752	1916	9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe	32
PID 1916 wrote to memory of 2752	1916	9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe	32
PID 1916 wrote to memory of 2752	1916	9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe	32
PID 1916 wrote to memory of 2752	1916	9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe	32
PID 1916 wrote to memory of 2752	1916	9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe	32
PID 1916 wrote to memory of 2752	1916	9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe	32
PID 1916 wrote to memory of 2752	1916	9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe	32
PID 1916 wrote to memory of 2752	1916	9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe	32
PID 1916 wrote to memory of 2772	1916	9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe	33
PID 1916 wrote to memory of 2772	1916	9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe	33
PID 1916 wrote to memory of 2772	1916	9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe	33
PID 1916 wrote to memory of 2772	1916	9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe	33

C:\Users\Admin\AppData\Local\Temp\9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe
"C:\Users\Admin\AppData\Local\Temp\9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1916
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1820
- C:\Users\Admin\AppData\Local\Temp\9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe
  "C:\Users\Admin\AppData\Local\Temp\9516599f449a283c1863a45d1c95433aa769fd86d49058ca861e37a1f758831d.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2752
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1916 -s 704
  2⤵
  - Program crash
  PID:2772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

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

Replay Monitor

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Downloads

memory/1916-0-0x000000007469E000-0x000000007469F000-memory.dmp

Filesize
4KB

Download
memory/1916-1-0x0000000000DE0000-0x0000000000ED6000-memory.dmp

Filesize
984KB

Download
memory/1916-2-0x0000000074690000-0x0000000074D7E000-memory.dmp

Filesize
6.9MB

Download
memory/1916-3-0x0000000000500000-0x0000000000514000-memory.dmp

Filesize
80KB

Download
memory/1916-4-0x000000007469E000-0x000000007469F000-memory.dmp

Filesize
4KB

Download
memory/1916-5-0x0000000074690000-0x0000000074D7E000-memory.dmp

Filesize
6.9MB

Download
memory/1916-6-0x0000000005540000-0x0000000005604000-memory.dmp

Filesize
784KB

Download
memory/1916-29-0x0000000074690000-0x0000000074D7E000-memory.dmp

Filesize
6.9MB

Download
memory/2752-15-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2752-17-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-13-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-7-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-9-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

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