remcos | bdf1839d82ed286b49c40e5bae59374d59bcbb37ec28266b6aaca47e391ac747

General

Target

bdf1839d82ed286b49c40e5bae59374d59bcbb37ec28266b6aaca47e391ac747.exe
Size

1.1MB
MD5

e244fd43d06ea0f234c71fff8e3f711f
SHA1

a913b51d74327b5fdafa2818acdf72636c3ca20a
SHA256

bdf1839d82ed286b49c40e5bae59374d59bcbb37ec28266b6aaca47e391ac747
SHA512

6af4afb9dbee48c7d6839d445d25abf3816ead782b0514f7e882a2a1d4e4b732b69bd953ef7b88574a3534d331bc0ce06e88d56ebde2988c8e2702cef2fcf823
SSDEEP

24576:uRmJkcoQricOIQxiZY1iaCV/uvPPJUTxDZS4NO7j4MUuvWu:7JZoQrbTFZY1iaCV/uPJoxk4NOIS

Score

10^/10

remcos nov 12 discovery rat

Malware Config

Extracted

Family

remcos

Botnet

NOV 12

C2

leehoi01.ddns.net:9373

103.187.117.76:5584

154.216.18.171:5584

154.216.20.223:5584

leehoi02.ddns.net:9373

areabill.duckdns.org:9373

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-KA6I08
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
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

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\outvaunts.vbs	outvaunts.exe

Executes dropped EXE 1 IoCs

pid	Process
1780	outvaunts.exe

Loads dropped DLL 1 IoCs

pid	Process
1920	bdf1839d82ed286b49c40e5bae59374d59bcbb37ec28266b6aaca47e391ac747.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0009000000015d7f-13.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1780 set thread context of 2816	1780	outvaunts.exe	31

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 3 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	outvaunts.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bdf1839d82ed286b49c40e5bae59374d59bcbb37ec28266b6aaca47e391ac747.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1780	outvaunts.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2816	svchost.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1920 wrote to memory of 1780	1920	bdf1839d82ed286b49c40e5bae59374d59bcbb37ec28266b6aaca47e391ac747.exe	30
PID 1920 wrote to memory of 1780	1920	bdf1839d82ed286b49c40e5bae59374d59bcbb37ec28266b6aaca47e391ac747.exe	30
PID 1920 wrote to memory of 1780	1920	bdf1839d82ed286b49c40e5bae59374d59bcbb37ec28266b6aaca47e391ac747.exe	30
PID 1920 wrote to memory of 1780	1920	bdf1839d82ed286b49c40e5bae59374d59bcbb37ec28266b6aaca47e391ac747.exe	30
PID 1780 wrote to memory of 2816	1780	outvaunts.exe	31
PID 1780 wrote to memory of 2816	1780	outvaunts.exe	31
PID 1780 wrote to memory of 2816	1780	outvaunts.exe	31
PID 1780 wrote to memory of 2816	1780	outvaunts.exe	31
PID 1780 wrote to memory of 2816	1780	outvaunts.exe	31

C:\Users\Admin\AppData\Local\Temp\bdf1839d82ed286b49c40e5bae59374d59bcbb37ec28266b6aaca47e391ac747.exe
"C:\Users\Admin\AppData\Local\Temp\bdf1839d82ed286b49c40e5bae59374d59bcbb37ec28266b6aaca47e391ac747.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1920
- C:\Users\Admin\AppData\Local\reaffect\outvaunts.exe
  "C:\Users\Admin\AppData\Local\Temp\bdf1839d82ed286b49c40e5bae59374d59bcbb37ec28266b6aaca47e391ac747.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1780
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\bdf1839d82ed286b49c40e5bae59374d59bcbb37ec28266b6aaca47e391ac747.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2816

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

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

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
db35ebcdcb8060a971f59e9ce36b26fb

SHA1
d2192aa780bd6f45f7412d741a17f446eeb874e3

SHA256
531b604f1dc267fb6ad2059ef4e6c9a9bffa80d05bb48aab7d9db2de4bc93c72

SHA512
cf2bbdcd4d461337fdfec795e2335a874fad4b6e1507a84f05b0166b229f72c27a46344a9cbeb3c22688028b153098cf36eec9347d1ea0e92215c283b8672a57

Download Submit
\Users\Admin\AppData\Local\reaffect\outvaunts.exe

Filesize
1.1MB

MD5
e244fd43d06ea0f234c71fff8e3f711f

SHA1
a913b51d74327b5fdafa2818acdf72636c3ca20a

SHA256
bdf1839d82ed286b49c40e5bae59374d59bcbb37ec28266b6aaca47e391ac747

SHA512
6af4afb9dbee48c7d6839d445d25abf3816ead782b0514f7e882a2a1d4e4b732b69bd953ef7b88574a3534d331bc0ce06e88d56ebde2988c8e2702cef2fcf823

Download Submit
memory/1780-31-0x00000000024C0000-0x00000000025C0000-memory.dmp

Filesize
1024KB

Download
memory/1920-11-0x0000000000150000-0x0000000000250000-memory.dmp

Filesize
1024KB

Download
memory/2816-56-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-58-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-81-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-82-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-88-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-89-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-90-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-92-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2816-93-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

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