remcos | 2b30cabf96318357cd458a639ea7b5b92a511fc595cb7ca800a9a5c28048f0fe

Analysis

max time kernel
148s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
19-04-2024 17:46

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General

Target

HEARTB.dll
Size

762.9MB
MD5

0388aed063e3aa34a3a6a08c32cf90bf
SHA1

efc04bfc8a8aac5da6bb00f0b52d3f325f267a50
SHA256

2b30cabf96318357cd458a639ea7b5b92a511fc595cb7ca800a9a5c28048f0fe
SHA512

71a623efec18aaff44dc303cdc0f8a18d71c825d28f880fab5d423cfb917924eca4ca30848e5f9cbb11458ddec6e270a69b9581b0e7c3102e006229bbebe1505
SSDEEP

98304:qqHQXidDnBW0hcthSDnqDO5rzRQfaxcxVwdqaBA:qXi9gDmyhmM

Score

10^/10

remcos remotehost rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

martinsplexis.duckdns.org:4047

Attributes

audio_folder
MicRecords
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-RH6SHP
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
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

regsvr32.exe

pid process

4668 regsvr32.exe

pid	process
4668	regsvr32.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

regsvr32.exeregsvr32.exe

description	pid	process	target process
PID 920 wrote to memory of 4668	920	regsvr32.exe	regsvr32.exe
PID 920 wrote to memory of 4668	920	regsvr32.exe	regsvr32.exe
PID 920 wrote to memory of 4668	920	regsvr32.exe	regsvr32.exe
PID 4668 wrote to memory of 1732	4668	regsvr32.exe	regsvr32.exe
PID 4668 wrote to memory of 1732	4668	regsvr32.exe	regsvr32.exe
PID 4668 wrote to memory of 1732	4668	regsvr32.exe	regsvr32.exe
PID 4668 wrote to memory of 1732	4668	regsvr32.exe	regsvr32.exe
PID 4668 wrote to memory of 1732	4668	regsvr32.exe	regsvr32.exe
PID 4668 wrote to memory of 1732	4668	regsvr32.exe	regsvr32.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\HEARTB.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:920

C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\HEARTB.dll
2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of WriteProcessMemory
PID:4668

C:\Windows\SysWOW64\regsvr32.exe
"C:\Windows\SysWOW64\regsvr32.exe"
3⤵
PID:1732

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/1732-19-0x0000000000500000-0x0000000000582000-memory.dmp

Filesize
520KB

Download
memory/1732-28-0x0000000000500000-0x0000000000582000-memory.dmp

Filesize
520KB

Download
memory/1732-12-0x0000000000500000-0x0000000000582000-memory.dmp

Filesize
520KB

Download
memory/1732-3-0x0000000000590000-0x0000000000591000-memory.dmp

Filesize
4KB

Download
memory/1732-13-0x0000000000500000-0x0000000000582000-memory.dmp

Filesize
520KB

Download
memory/1732-27-0x0000000000500000-0x0000000000582000-memory.dmp

Filesize
520KB

Download
memory/1732-7-0x0000000000500000-0x0000000000582000-memory.dmp

Filesize
520KB

Download
memory/1732-25-0x0000000000500000-0x0000000000582000-memory.dmp

Filesize
520KB

Download
memory/1732-9-0x0000000000500000-0x0000000000582000-memory.dmp

Filesize
520KB

Download
memory/1732-14-0x0000000000500000-0x0000000000582000-memory.dmp

Filesize
520KB

Download
memory/1732-24-0x0000000000500000-0x0000000000582000-memory.dmp

Filesize
520KB

Download
memory/1732-23-0x0000000000500000-0x0000000000582000-memory.dmp

Filesize
520KB

Download
memory/1732-11-0x0000000000500000-0x0000000000582000-memory.dmp

Filesize
520KB

Download
memory/1732-15-0x0000000000500000-0x0000000000582000-memory.dmp

Filesize
520KB

Download
memory/1732-16-0x0000000000500000-0x0000000000582000-memory.dmp

Filesize
520KB

Download
memory/1732-21-0x0000000000500000-0x0000000000582000-memory.dmp

Filesize
520KB

Download
memory/1732-20-0x0000000000500000-0x0000000000582000-memory.dmp

Filesize
520KB

Download
memory/4668-0-0x00000000679E0000-0x0000000068086000-memory.dmp

Filesize
6.6MB

Download
memory/4668-1-0x00000000679E0000-0x0000000068086000-memory.dmp

Filesize
6.6MB

Download
memory/4668-2-0x00000000679E0000-0x0000000068086000-memory.dmp

Filesize
6.6MB

Download
memory/4668-8-0x00000000679E0000-0x0000000068086000-memory.dmp

Filesize
6.6MB

Download
memory/4668-6-0x00000000679E0000-0x0000000068086000-memory.dmp

Filesize
6.6MB

Download
memory/4668-4-0x00000000679E0000-0x0000000068086000-memory.dmp

Filesize
6.6MB

Download