remcos | 8b2a33314505781855da6824132f4b392cda4eea4862932b1b887673f656338c

General

Target

8b2a33314505781855da6824132f4b392cda4eea4862932b1b887673f656338c.exe
Size

1.4MB
MD5

a1c95767e2aae895bca002778203b26e
SHA1

ee02ae312b7a4b12335cfc38a3260503aebca0a8
SHA256

8b2a33314505781855da6824132f4b392cda4eea4862932b1b887673f656338c
SHA512

ecb2bc9815e26b22bed93865ba552d218f62e3bf8c4c9c859033059a9faf07000630ea8bee7ee3e2dad9d3268b97259b821bb04b62d3815c2442c742d3380f46
SSDEEP

24576:sqDEvCTbMWu7rQYlBQcBiT6rprG8apZtCx7NAumZ2CvYZdqROwKmzOYxrnP:sTvC/MTQYxsWR7apZt6po0ZERlKqXN

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

spacesave.duckdns.org:14645

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-RLABK3
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

Drops startup file 1 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
4472	ddd.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x000100000002ab04-14.dat	autoit_exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	ddd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8b2a33314505781855da6824132f4b392cda4eea4862932b1b887673f656338c.exe

Suspicious use of FindShellTrayWindow 10 IoCs

pid	Process
3856	8b2a33314505781855da6824132f4b392cda4eea4862932b1b887673f656338c.exe
3856	8b2a33314505781855da6824132f4b392cda4eea4862932b1b887673f656338c.exe
3856	8b2a33314505781855da6824132f4b392cda4eea4862932b1b887673f656338c.exe
3856	8b2a33314505781855da6824132f4b392cda4eea4862932b1b887673f656338c.exe
3856	8b2a33314505781855da6824132f4b392cda4eea4862932b1b887673f656338c.exe
4472	ddd.exe
4472	ddd.exe
4472	ddd.exe
4472	ddd.exe
4472	ddd.exe

Suspicious use of SendNotifyMessage 10 IoCs

pid	Process
3856	8b2a33314505781855da6824132f4b392cda4eea4862932b1b887673f656338c.exe
3856	8b2a33314505781855da6824132f4b392cda4eea4862932b1b887673f656338c.exe
3856	8b2a33314505781855da6824132f4b392cda4eea4862932b1b887673f656338c.exe
3856	8b2a33314505781855da6824132f4b392cda4eea4862932b1b887673f656338c.exe
3856	8b2a33314505781855da6824132f4b392cda4eea4862932b1b887673f656338c.exe
4472	ddd.exe
4472	ddd.exe
4472	ddd.exe
4472	ddd.exe
4472	ddd.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3856 wrote to memory of 4472	3856	8b2a33314505781855da6824132f4b392cda4eea4862932b1b887673f656338c.exe	84
PID 3856 wrote to memory of 4472	3856	8b2a33314505781855da6824132f4b392cda4eea4862932b1b887673f656338c.exe	84
PID 3856 wrote to memory of 4472	3856	8b2a33314505781855da6824132f4b392cda4eea4862932b1b887673f656338c.exe	84

C:\Users\Admin\AppData\Local\Temp\8b2a33314505781855da6824132f4b392cda4eea4862932b1b887673f656338c.exe
"C:\Users\Admin\AppData\Local\Temp\8b2a33314505781855da6824132f4b392cda4eea4862932b1b887673f656338c.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3856
- C:\Users\Admin\AppData\Local\directory\ddd.exe
  "C:\Users\Admin\AppData\Local\Temp\8b2a33314505781855da6824132f4b392cda4eea4862932b1b887673f656338c.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:4472

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\seskin

Filesize
84KB

MD5
e35f6cb972a5dea274b746d9e4c25fe3

SHA1
3a0d7f1f0e631be14a2041f28d3979cf0ef76999

SHA256
9aeb3e90a42d4c33d932a4191bd20a84b7db2627fd04896a98ceb3100a207391

SHA512
f065dd4e31a7628fcdedf13f030080925e8f85268226aae072694df9c52da84fe07095e9b053f06b0173d1259dd027970c745831b49c2a15ba16f4d921ecb85b

Download Submit
C:\Users\Admin\AppData\Local\Temp\troopwise

Filesize
64KB

MD5
da49e6838b3af1cff00c12fb059a13f6

SHA1
e990092d08ee8e23f625971070e62cff1773221f

SHA256
5974c6fe2b799283fa2b3e39485da5d4cb7246a9d27da065c454a7e67046e036

SHA512
8614ae133d99444ee922d81949bbec14e6262cf3d38e20d9df3a806134d303b5851b849c6bf4d50b59089ecf791017fb97d08d84d68ce7b3f0a23315a350fba7

Download Submit
C:\Users\Admin\AppData\Local\directory\ddd.exe

Filesize
1.4MB

MD5
a1c95767e2aae895bca002778203b26e

SHA1
ee02ae312b7a4b12335cfc38a3260503aebca0a8

SHA256
8b2a33314505781855da6824132f4b392cda4eea4862932b1b887673f656338c

SHA512
ecb2bc9815e26b22bed93865ba552d218f62e3bf8c4c9c859033059a9faf07000630ea8bee7ee3e2dad9d3268b97259b821bb04b62d3815c2442c742d3380f46

Download Submit
memory/3856-11-0x0000000003E20000-0x0000000003E24000-memory.dmp

Filesize
16KB

Download
memory/4472-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4472-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4472-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4472-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4472-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4472-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4472-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4472-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4472-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4472-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4472-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4472-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4472-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4472-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4472-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4472-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4472-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

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