remcos | f9a75f67ab3b4e7fa308bdac0ab7a6c40f0189fb3d95cfdb455023080a89c517

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
31-01-2025 14:43

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General

Target

Vendor Questionnaire and EOI.exe
Size

610KB
MD5

d0627ad0019378cd5a6f23eb4a0f1c8f
SHA1

9626f6c80883b8203b299a1d751e136bf5e16e54
SHA256

f9a75f67ab3b4e7fa308bdac0ab7a6c40f0189fb3d95cfdb455023080a89c517
SHA512

8b6a2d8c71a2232f07c17d6e1e67e34945cbf08dad2426112ace21c4d808fdbf05adc44e78be742067130255af819d97cae93bf3c68f05da5c88777b6a8bbdd8
SSDEEP

12288:p98UWQxHvxTMN0X4YcXGw9CIOmUwuTRQXgz3sK7hvhO7G:paQxG3YWGkCIhUwuTRQwrl9e

Score

10^/10

remcos googlegroupaccount discovery rat

Malware Config

Extracted

Family

remcos

Botnet

googlegroupaccount

107.174.65.146:1194

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
googlegroupaccount.exe
copy_folder
googlegroupaccount
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
true
install_path
%Temp%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-1MDOQC
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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4860 set thread context of 4444	4860	Vendor Questionnaire and EOI.exe	85

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1728	4444	WerFault.exe	85

System Location Discovery: System Language Discovery 1 TTPs 1 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	Vendor Questionnaire and EOI.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4860 wrote to memory of 4444	4860	Vendor Questionnaire and EOI.exe	85
PID 4860 wrote to memory of 4444	4860	Vendor Questionnaire and EOI.exe	85
PID 4860 wrote to memory of 4444	4860	Vendor Questionnaire and EOI.exe	85
PID 4860 wrote to memory of 4444	4860	Vendor Questionnaire and EOI.exe	85
PID 4860 wrote to memory of 4444	4860	Vendor Questionnaire and EOI.exe	85
PID 4860 wrote to memory of 4444	4860	Vendor Questionnaire and EOI.exe	85
PID 4860 wrote to memory of 4444	4860	Vendor Questionnaire and EOI.exe	85
PID 4860 wrote to memory of 4444	4860	Vendor Questionnaire and EOI.exe	85
PID 4860 wrote to memory of 4444	4860	Vendor Questionnaire and EOI.exe	85
PID 4860 wrote to memory of 4444	4860	Vendor Questionnaire and EOI.exe	85

C:\Users\Admin\AppData\Local\Temp\Vendor Questionnaire and EOI.exe
"C:\Users\Admin\AppData\Local\Temp\Vendor Questionnaire and EOI.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4860
- C:\Users\Admin\AppData\Local\Temp\Vendor Questionnaire and EOI.exe
  "C:\Users\Admin\AppData\Local\Temp\Vendor Questionnaire and EOI.exe"
  2⤵
  PID:4444
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4444 -s 512
    3⤵
    - Program crash
    PID:1728

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4444 -ip 4444
1⤵
PID:4788

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4444-4-0x0000000000570000-0x00000000005F0000-memory.dmp

Filesize
512KB

Download
memory/4444-12-0x0000000000570000-0x00000000005F0000-memory.dmp

Filesize
512KB

Download
memory/4444-8-0x0000000000570000-0x00000000005F0000-memory.dmp

Filesize
512KB

Download
memory/4860-0-0x000000007447E000-0x000000007447F000-memory.dmp

Filesize
4KB

Download
memory/4860-1-0x0000000000250000-0x00000000002F0000-memory.dmp

Filesize
640KB

Download
memory/4860-2-0x00000000051A0000-0x0000000005744000-memory.dmp

Filesize
5.6MB

Download
memory/4860-13-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download
memory/4860-14-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download