remcos | b672afc774d2c57bce68ffea72a0236019a2bfe9fdae61b6deac4906f9dff2ce

General

Target

Quote.scr
Size

984KB
MD5

09d1f74cf4434fd7ff3ee83a2479d7a9
SHA1

d70d3164f2fe24b4263e56ff2df171c15110e33b
SHA256

9f05db230894256a6be6bf1b5b523894e621cf0b43632c0465c76717058d3ebb
SHA512

7e8aa100fb7da347d56b9f34a87a91e5dfe71fa370f9dd42f571e70a37b779819253682dfe879224e06427b0ff10f4951e5b31648945011fd44584d480b062bb
SSDEEP

24576:3IHzeLasydPeQ7h+ue7k+i4ZcPU33R1f4VTPx4pty9A:YaLaVJeQ0ue7Tcs33R14Fx4pty9A

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

2.58.56.182:2404

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-GM05WY
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 2 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2284	powershell.exe
2552	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2808 set thread context of 2100	2808	Quote.scr	35

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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Quote.scr
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2268	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2808	Quote.scr
2808	Quote.scr
2808	Quote.scr
2808	Quote.scr
2284	powershell.exe
2808	Quote.scr
2552	powershell.exe
2808	Quote.scr

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2808	Quote.scr
Token: SeDebugPrivilege	2284	powershell.exe
Token: SeDebugPrivilege	2552	powershell.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2808 wrote to memory of 2284	2808	Quote.scr	29
PID 2808 wrote to memory of 2284	2808	Quote.scr	29
PID 2808 wrote to memory of 2284	2808	Quote.scr	29
PID 2808 wrote to memory of 2284	2808	Quote.scr	29
PID 2808 wrote to memory of 2552	2808	Quote.scr	31
PID 2808 wrote to memory of 2552	2808	Quote.scr	31
PID 2808 wrote to memory of 2552	2808	Quote.scr	31
PID 2808 wrote to memory of 2552	2808	Quote.scr	31
PID 2808 wrote to memory of 2268	2808	Quote.scr	33
PID 2808 wrote to memory of 2268	2808	Quote.scr	33
PID 2808 wrote to memory of 2268	2808	Quote.scr	33
PID 2808 wrote to memory of 2268	2808	Quote.scr	33
PID 2808 wrote to memory of 2100	2808	Quote.scr	35
PID 2808 wrote to memory of 2100	2808	Quote.scr	35
PID 2808 wrote to memory of 2100	2808	Quote.scr	35
PID 2808 wrote to memory of 2100	2808	Quote.scr	35
PID 2808 wrote to memory of 2100	2808	Quote.scr	35
PID 2808 wrote to memory of 2100	2808	Quote.scr	35
PID 2808 wrote to memory of 2100	2808	Quote.scr	35
PID 2808 wrote to memory of 2100	2808	Quote.scr	35
PID 2808 wrote to memory of 2100	2808	Quote.scr	35
PID 2808 wrote to memory of 2100	2808	Quote.scr	35
PID 2808 wrote to memory of 2100	2808	Quote.scr	35

C:\Users\Admin\AppData\Local\Temp\Quote.scr
"C:\Users\Admin\AppData\Local\Temp\Quote.scr" /S
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2808
- 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\Quote.scr"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2284
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YPabBLvsNvjDRI.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2552
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YPabBLvsNvjDRI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5F5F.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2268
- C:\Users\Admin\AppData\Local\Temp\Quote.scr
  "C:\Users\Admin\AppData\Local\Temp\Quote.scr"
  2⤵
  PID:2100

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp5F5F.tmp

Filesize
1KB

MD5
4dc235ae4abe53cd5fc0454399bb8656

SHA1
20a409c3ee999ee37357e0745537b0d781d15943

SHA256
21fd9b89af8ea4911f20510d4a270e2174826bc81102fe4cbc5a458da9abe281

SHA512
5a894dc6f25fae1caa51f9dae0237459d4f4de346f55fb4316402023c8ff6b84d6c2caeb11ae550588c816c14abc99b02a345d11def2cdf9550c2d47155dfa08

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
8ec7bb2c5d37dc5b20f56e19212030d2

SHA1
29523f3d3e78bf53ce9b06545b5db73aa2f5e790

SHA256
e8db8dcea5dad0515f6890575f73b16c60216f7622ce8df1cafe839ace63a7b4

SHA512
feb85db687caa4e8689d688abf9894344fb9ee34ad9671ba964d0e55807fc977cb42f8c726957fc5b4faef0e5ae3a226900c00c5ba33870946982b387f2dbe1d

Download Submit
memory/2100-25-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2100-21-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2100-33-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2100-41-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2100-31-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2100-37-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2100-36-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2100-23-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2100-19-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2100-32-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2100-43-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2100-39-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2100-34-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2100-35-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2100-29-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2100-27-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2808-1-0x00000000008E0000-0x00000000009DC000-memory.dmp

Filesize
1008KB

Download
memory/2808-0-0x000000007430E000-0x000000007430F000-memory.dmp

Filesize
4KB

Download
memory/2808-3-0x0000000000720000-0x000000000073E000-memory.dmp

Filesize
120KB

Download
memory/2808-2-0x0000000074300000-0x00000000749EE000-memory.dmp

Filesize
6.9MB

Download
memory/2808-38-0x0000000074300000-0x00000000749EE000-memory.dmp

Filesize
6.9MB

Download
memory/2808-6-0x000000000A580000-0x000000000A644000-memory.dmp

Filesize
784KB

Download
memory/2808-5-0x0000000074300000-0x00000000749EE000-memory.dmp

Filesize
6.9MB

Download
memory/2808-4-0x000000007430E000-0x000000007430F000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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