remcos | 77b6482e415499d039fd94dc2c588217bb71bd6f3da0747c53a439bc9490fbed

Analysis

max time kernel
142s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
23/08/2023, 16:22

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General

Target

Rooming list.exe
Size

133.0MB
MD5

6b405cc5058f539118b7bf278e5ec92d
SHA1

32576751854860acb742f71bd1aef7cc6accdbfc
SHA256

6460ce4d46ea972d0296bfbfd2315b2686021380c4d22ceb0c0a987faa749fd4
SHA512

55393ecd988d2beae68897d32287ac57b9d220534cc17dc3a82ca4b201b99d847b8247c0993a813901658953a25e08da35583a82a8e4dbed1f111e639a33a125
SSDEEP

24576:BSoUQ4BU6CXEFENRLBZE3RmZDWkhkz+t/cOlIoxXz1WvDuS7K:Ib4JBZEBam+t/zFX0LuEK

Score

10^/10

remcos remotehost rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

closen.kozow.com:2404

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-V0K781
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
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3164 set thread context of 4832	3164	Rooming list.exe	84

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4312	4832	WerFault.exe	84

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3164 wrote to memory of 4832	3164	Rooming list.exe	84
PID 3164 wrote to memory of 4832	3164	Rooming list.exe	84
PID 3164 wrote to memory of 4832	3164	Rooming list.exe	84
PID 3164 wrote to memory of 4832	3164	Rooming list.exe	84
PID 3164 wrote to memory of 4832	3164	Rooming list.exe	84
PID 3164 wrote to memory of 4832	3164	Rooming list.exe	84
PID 3164 wrote to memory of 4832	3164	Rooming list.exe	84
PID 3164 wrote to memory of 4832	3164	Rooming list.exe	84
PID 3164 wrote to memory of 4832	3164	Rooming list.exe	84
PID 3164 wrote to memory of 4832	3164	Rooming list.exe	84
PID 3164 wrote to memory of 4832	3164	Rooming list.exe	84
PID 3164 wrote to memory of 4832	3164	Rooming list.exe	84

C:\Users\Admin\AppData\Local\Temp\Rooming list.exe
"C:\Users\Admin\AppData\Local\Temp\Rooming list.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3164
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  PID:4832
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4832 -s 512
    3⤵
    - Program crash
    PID:4312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 4832 -ip 4832
1⤵
PID:3112

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scripting

T1064

Persistence

Privilege Escalation

Defense Evasion

Scripting

T1064

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3164-1-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/3164-0-0x0000000000EF0000-0x000000000100E000-memory.dmp

Filesize
1.1MB

Download
memory/3164-2-0x0000000005F70000-0x0000000006514000-memory.dmp

Filesize
5.6MB

Download
memory/3164-3-0x00000000059C0000-0x0000000005A52000-memory.dmp

Filesize
584KB

Download
memory/3164-4-0x00000000059B0000-0x00000000059C0000-memory.dmp

Filesize
64KB

Download
memory/3164-9-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/4832-6-0x0000000000A00000-0x0000000000A81000-memory.dmp

Filesize
516KB

Download
memory/4832-12-0x0000000000A00000-0x0000000000A81000-memory.dmp

Filesize
516KB

Download
memory/4832-17-0x0000000000A00000-0x0000000000A81000-memory.dmp

Filesize
516KB

Download