remcos | 3799b7afd9b7360155c78f5c93934d8bb304b6eda203c442a285b0992f1f8c36

General

Target

17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe
Size

481KB
MD5

a3cfe4942b0ee84ab5a32698860f6ebf
SHA1

835c4f861af46c8ee071041c8ada8acf8193a1da
SHA256

3799b7afd9b7360155c78f5c93934d8bb304b6eda203c442a285b0992f1f8c36
SHA512

bd9f9435b3c38d5f384b3bd78c7d250f69ab29a9d6dc7b1927cc43a9053ab200239c2a1c6b62d6972ae87a0d8fd36b964ca7f4e808e0de69671f57ed627e7237
SSDEEP

12288:LuD09AUkNIGBYYv4eK13x13nZHSRVMf139F5wIB7+IwtHwBtVxbesvZDS1+DY:O09AfNIEYsunZvZ19Zes

Score

10^/10

remcos remotehost collection discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

kiolokgangan.duckdns.org:2430

apieconi.duckdns.org:2439

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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-QJ4441
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

Detected Nirsoft tools 7 IoCs

Free utilities often used by attackers which can steal passwords, product keys, etc.

resource	yara_rule
behavioral2/memory/4904-11-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4216-20-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4216-22-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1392-12-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1392-14-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4904-13-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1392-25-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/4216-20-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4216-22-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/1392-12-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1392-14-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1392-25-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1560 set thread context of 1392	1560	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe	82
PID 1560 set thread context of 4216	1560	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe	83
PID 1560 set thread context of 4904	1560	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe	84

System Location Discovery: System Language Discovery 1 TTPs 4 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	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1392	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe
1392	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe
4904	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe
4904	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe
1392	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe
1392	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
1560	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe
1560	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe
1560	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4904	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1560 wrote to memory of 1392	1560	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe	82
PID 1560 wrote to memory of 1392	1560	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe	82
PID 1560 wrote to memory of 1392	1560	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe	82
PID 1560 wrote to memory of 4216	1560	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe	83
PID 1560 wrote to memory of 4216	1560	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe	83
PID 1560 wrote to memory of 4216	1560	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe	83
PID 1560 wrote to memory of 4904	1560	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe	84
PID 1560 wrote to memory of 4904	1560	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe	84
PID 1560 wrote to memory of 4904	1560	17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe	84

C:\Users\Admin\AppData\Local\Temp\17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe
"C:\Users\Admin\AppData\Local\Temp\17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1560
- C:\Users\Admin\AppData\Local\Temp\17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\cakwtpmcuxuqtvjkvzyejouxq"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:1392
- C:\Users\Admin\AppData\Local\Temp\17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\nupptawvqfmdvbfoeclfmspoqoiv"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:4216
- C:\Users\Admin\AppData\Local\Temp\17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17346150108fd59162a7f50db4b74cc85f1873b39cc8eaeab355e353b3b8b18e8e21fd369d493.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\pwchushxeneiyitsvmxhxfkfzvrekufr"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4904

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
4KB

MD5
bc25ccf39db8626dc249529bcc8c5639

SHA1
3e9cbdb20a0970a3c13719a2f289d210cdcc9e1d

SHA256
b333f8c736c701bc826886f395d928731850cbce6db77be752b3cf7979114904

SHA512
9a546127bddc1d187e674cda82e6c5046cac7f3e6f9515aed68d5bff2264b9d679d857dd97270e10826cd11ce2d92d82dd7f9801e19027e346b60bcc814cca1a

Download Submit
memory/1392-12-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1392-25-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1392-6-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1392-14-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1392-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1560-28-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1560-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1560-31-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1560-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1560-32-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1560-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1560-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4216-15-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4216-7-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4216-3-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4216-22-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4216-20-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4904-8-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4904-13-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4904-10-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4904-16-0x0000000000430000-0x00000000004F9000-memory.dmp

Filesize
804KB

Download
memory/4904-11-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download

Analysis

Sharing