remcos | 1e77a63d27b905f5e8ca03706a05367522c8a4fe900d1b2e3f0cb06cc5ff78a3

General

Target

95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe
Size

582KB
MD5

4dd854935958419bfa8c5b5990ef0cc4
SHA1

8b60819fd23f870d850b25bb5cb7cbe8ffdc835f
SHA256

1e77a63d27b905f5e8ca03706a05367522c8a4fe900d1b2e3f0cb06cc5ff78a3
SHA512

ed283da562669017d18f719d2a51578f78c080706f15ba9fceacdae43b4223578d8ca893382756675e2a3ec814af60e7743c511e0146a352590d2b106d461eb4
SSDEEP

12288:9rWfmDi7yIEnMcEz0bwVaYGUJ5ThYpPR7:9rW3OEowQqxhQ7

Score

10^/10

remcos new persistence rat

Malware Config

Extracted

Family

remcos

Botnet

NEW

C2

remcapi.duckdns.org:2028

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
FILE.EXE
copy_folder
work
delete_file
true
hide_file
false
hide_keylog_file
false
install_flag
true
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-L9LQMY
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
file
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

aspnet_compiler.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	aspnet_compiler.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\file = "\"C:\\ProgramData\\work\\FILE.EXE\""	aspnet_compiler.exe

Drops startup file 2 IoCs

Processes:

Powershell.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SysDHTHtem.exe	Powershell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SysDHTHtem.exe	Powershell.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe

description	pid	process	target process
PID 4796 set thread context of 4728	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe	aspnet_compiler.exe

Modifies registry class 1 IoCs

Processes:

aspnet_compiler.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings aspnet_compiler.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings	aspnet_compiler.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exePowershell.exe

pid	process
4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe
4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe
4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe
4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe
4984	Powershell.exe
4984	Powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exePowershell.exe

description	pid	process
Token: SeDebugPrivilege	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe
Token: SeDebugPrivilege	4984	Powershell.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exeaspnet_compiler.exe

description	pid	process	target process
PID 4796 wrote to memory of 4984	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe	Powershell.exe
PID 4796 wrote to memory of 4984	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe	Powershell.exe
PID 4796 wrote to memory of 4984	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe	Powershell.exe
PID 4796 wrote to memory of 4308	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe	aspnet_compiler.exe
PID 4796 wrote to memory of 4308	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe	aspnet_compiler.exe
PID 4796 wrote to memory of 4308	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe	aspnet_compiler.exe
PID 4796 wrote to memory of 4432	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe	aspnet_compiler.exe
PID 4796 wrote to memory of 4432	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe	aspnet_compiler.exe
PID 4796 wrote to memory of 4432	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe	aspnet_compiler.exe
PID 4796 wrote to memory of 4728	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe	aspnet_compiler.exe
PID 4796 wrote to memory of 4728	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe	aspnet_compiler.exe
PID 4796 wrote to memory of 4728	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe	aspnet_compiler.exe
PID 4796 wrote to memory of 4728	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe	aspnet_compiler.exe
PID 4796 wrote to memory of 4728	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe	aspnet_compiler.exe
PID 4796 wrote to memory of 4728	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe	aspnet_compiler.exe
PID 4796 wrote to memory of 4728	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe	aspnet_compiler.exe
PID 4796 wrote to memory of 4728	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe	aspnet_compiler.exe
PID 4796 wrote to memory of 4728	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe	aspnet_compiler.exe
PID 4796 wrote to memory of 4728	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe	aspnet_compiler.exe
PID 4796 wrote to memory of 4728	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe	aspnet_compiler.exe
PID 4796 wrote to memory of 4728	4796	95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe	aspnet_compiler.exe
PID 4728 wrote to memory of 4732	4728	aspnet_compiler.exe	WScript.exe
PID 4728 wrote to memory of 4732	4728	aspnet_compiler.exe	WScript.exe
PID 4728 wrote to memory of 4732	4728	aspnet_compiler.exe	WScript.exe

C:\Users\Admin\AppData\Local\Temp\95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe
"C:\Users\Admin\AppData\Local\Temp\95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4796

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
"Powershell" Copy-Item 'C:\Users\Admin\AppData\Local\Temp\95.214.24.120_-_vect_-_WWEESSCXDDGJ.exe___4dd854935958419bfa8c5b5990ef0cc4.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SysDHTHtem.exe'
2⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4984

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
2⤵
PID:4308

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
2⤵
PID:4432

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
2⤵
- Adds policy Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4728

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
3⤵
PID:4732

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\install.vbs
Filesize
544B

MD5
88f5d22d281c19ca952ece4be401a79b

SHA1
718e7a6cbb2fa8a80a847c90500c7c6cdb3e2b8b

SHA256
cfaa9a4e27d62f30fdbe1e28ccdff39589a5e3995eabb51d1afc9ae3f964c379

SHA512
064d09ef43db19665f5a907af5c6f20a95d22fe7b1c3a79f4fd2e588ab31f8ef9097d580da4193a5ff3019e7da9461cc2e0a3cf99f54b1725d02e196b60e88f1

Download Submit
memory/4308-137-0x0000000000000000-mapping.dmp

Download
memory/4432-138-0x0000000000000000-mapping.dmp

Download
memory/4728-140-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4728-143-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4728-149-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4728-145-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4728-139-0x0000000000000000-mapping.dmp

Download
memory/4728-142-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4732-148-0x0000000000000000-mapping.dmp

Download
memory/4796-134-0x0000000005140000-0x00000000051DC000-memory.dmp

Filesize
624KB

Download
memory/4796-133-0x00000000056F0000-0x0000000005C94000-memory.dmp

Filesize
5.6MB

Download
memory/4796-132-0x0000000000640000-0x00000000006D4000-memory.dmp

Filesize
592KB

Download
memory/4984-136-0x0000000002480000-0x00000000024B6000-memory.dmp

Filesize
216KB

Download
memory/4984-146-0x00000000056D0000-0x0000000005736000-memory.dmp

Filesize
408KB

Download
memory/4984-147-0x00000000057B0000-0x0000000005816000-memory.dmp

Filesize
408KB

Download
memory/4984-144-0x0000000004E00000-0x0000000004E22000-memory.dmp

Filesize
136KB

Download
memory/4984-135-0x0000000000000000-mapping.dmp

Download
memory/4984-141-0x0000000004F30000-0x0000000005558000-memory.dmp

Filesize
6.2MB

Download
memory/4984-151-0x0000000005DA0000-0x0000000005DBE000-memory.dmp

Filesize
120KB

Download
memory/4984-152-0x0000000006320000-0x00000000063B6000-memory.dmp

Filesize
600KB

Download
memory/4984-153-0x0000000006290000-0x00000000062AA000-memory.dmp

Filesize
104KB

Download
memory/4984-154-0x00000000062E0000-0x0000000006302000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads