remcos | 73ffdd67a6e948371999c6a6b2c19b93e79b9d8865c6c9db8272656ce6437b25

Reason

Machine shutdown

General

Target

173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe
Size

482KB
MD5

bed0b49a1c006b2c04d9779e42cce107
SHA1

a57de9adcf5e8d9b520b1e3be7c2a2b0b4a9ebf8
SHA256

73ffdd67a6e948371999c6a6b2c19b93e79b9d8865c6c9db8272656ce6437b25
SHA512

b878ff5d33de6471cf76f32362f7d4ff1f9900537d794043bf369f85b41ce096802dd6151a2b5ac9a26c032cf72581becab5027f980db79088721c4fe0746768
SSDEEP

12288:513ak/mBXTG4/1v08KI7ZnMEF76JqmsvZQlS:rak/mBXTV/R0nEF76gFZ6

Score

10^/10

remcos remotehost collection discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

172.245.123.12:8690

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-M39SJI
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 9 IoCs

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

resource	yara_rule
behavioral2/memory/1952-15-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2392-14-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1952-19-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2392-23-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4700-21-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2392-13-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1952-11-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2392-10-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4700-28-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/1952-15-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/1952-19-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/1952-11-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/4700-21-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4700-28-0x0000000000400000-0x0000000000478000-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-1-5-21-2211717155-842865201-3404093980-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4224 set thread context of 4700	4224	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe	89
PID 4224 set thread context of 1952	4224	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe	90
PID 4224 set thread context of 2392	4224	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe	91

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	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2392	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe
2392	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe
4700	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe
4700	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe
4700	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe
4700	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
4224	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe
4224	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe
4224	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2392	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4224	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4224 wrote to memory of 4700	4224	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe	89
PID 4224 wrote to memory of 4700	4224	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe	89
PID 4224 wrote to memory of 4700	4224	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe	89
PID 4224 wrote to memory of 1952	4224	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe	90
PID 4224 wrote to memory of 1952	4224	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe	90
PID 4224 wrote to memory of 1952	4224	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe	90
PID 4224 wrote to memory of 2392	4224	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe	91
PID 4224 wrote to memory of 2392	4224	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe	91
PID 4224 wrote to memory of 2392	4224	173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe	91

C:\Users\Admin\AppData\Local\Temp\173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe
"C:\Users\Admin\AppData\Local\Temp\173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4224
- C:\Users\Admin\AppData\Local\Temp\173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\ngzsdafgrbudmwqhkqmaqnvb"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:4700
- C:\Users\Admin\AppData\Local\Temp\173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\yafddsqafjmiokmltazubzqkyjgb"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:1952
- C:\Users\Admin\AppData\Local\Temp\173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\173893638457e419e87ed010d210226754703711eb773c71c2575a5eac0166fa4fcc1d6566828.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\idkwelabbsenzqapkllveekbhxycokh"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2392

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

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
7aa233ccc8858f2729510fab2f2fb7f5

SHA1
f6cc47f44ef1c7eaf8c812e0834d5060f4053f08

SHA256
ebfbeaf17dbd3cde2f67d4837d84fcf31c54ee5483427a3c6ded54bbe08f8f7f

SHA512
feeb6307c1ac2a19c97dc817fc30da5a8f2750840884f829782479133f7862572e347e1b726771c9e7df2d62cef79494dc6253742edbe9dc6e13da6322f22ebf

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

Filesize
4KB

MD5
0e98efb5de87ad56d65832c99afbaa33

SHA1
467d68f10d14e92372197913f3d8a0277c5ecb44

SHA256
0e10bed8e4c5b10bb0b407f0394452fad6f6914489981e8ffde4855ad90dd59e

SHA512
5a7ca92c47dfaeab43250b0756ee52cc601ed166305c345ffac9820af9a3aa7110f5262e9bbcfb8d8c48eb7381f5af60ba7f756da3c546e6a3cd20a22c32dd5f

Download Submit
memory/1952-19-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1952-3-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1952-15-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1952-12-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1952-11-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1952-5-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2392-23-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2392-14-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2392-13-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2392-10-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2392-9-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2392-7-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4224-35-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4224-36-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4224-34-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4224-32-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4224-39-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4700-6-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4700-28-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4700-20-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4700-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4700-21-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download

Analysis

Sharing

Errors