remcos | 344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706

General

Target

344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe
Size

483KB
MD5

39929a185df693259910621ae76c4506
SHA1

26814268f5ac86d2603d06c28dcb349fd712cd1d
SHA256

344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706
SHA512

fa9890e9872e36ea3742bf6e91e7635c88d019930bb28c7ba2f2b8301b855f956f48f029444f9a0bcedd2d9b2bb9818539b8ab85decfe6adaea4ef031591d1df
SSDEEP

6144:wTz+c6KHYBhDc1RGJPv//NkUn+N5Bkf/0TELRvIZPjbsAOZZBAXccr/aT4:wTlrYw1RU33NFn+N5WfIQIjbs/ZBNT4

Score

10^/10

remcos remotehost collection discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

hiddenrmcnew.duckdns.org:7839

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-2QT0LM
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

Detected Nirsoft tools 9 IoCs

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

resource	yara_rule
behavioral2/memory/3048-10-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/516-16-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3048-20-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3048-15-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3176-14-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/516-13-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3176-9-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/516-23-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3176-25-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/3048-10-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/3048-20-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/3048-15-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/3176-14-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3176-9-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3176-25-0x0000000000400000-0x0000000000478000-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-1-5-21-2392887640-1187051047-2909758433-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4588 set thread context of 3176	4588	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe	84
PID 4588 set thread context of 3048	4588	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe	85
PID 4588 set thread context of 516	4588	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe	86

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	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3176	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe
3176	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe
516	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe
516	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe
3176	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe
3176	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
4588	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe
4588	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe
4588	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	516	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4588	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4588 wrote to memory of 3176	4588	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe	84
PID 4588 wrote to memory of 3176	4588	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe	84
PID 4588 wrote to memory of 3176	4588	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe	84
PID 4588 wrote to memory of 3048	4588	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe	85
PID 4588 wrote to memory of 3048	4588	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe	85
PID 4588 wrote to memory of 3048	4588	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe	85
PID 4588 wrote to memory of 516	4588	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe	86
PID 4588 wrote to memory of 516	4588	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe	86
PID 4588 wrote to memory of 516	4588	344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe	86

C:\Users\Admin\AppData\Local\Temp\344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe
"C:\Users\Admin\AppData\Local\Temp\344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4588
- C:\Users\Admin\AppData\Local\Temp\344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe
  C:\Users\Admin\AppData\Local\Temp\344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe /stext "C:\Users\Admin\AppData\Local\Temp\dxzlfgrgoge"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3176
- C:\Users\Admin\AppData\Local\Temp\344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe
  C:\Users\Admin\AppData\Local\Temp\344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe /stext "C:\Users\Admin\AppData\Local\Temp\grmvgychcowwjh"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:3048
- C:\Users\Admin\AppData\Local\Temp\344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe
  C:\Users\Admin\AppData\Local\Temp\344eeb88cd808140a7528ef191335bc3a70fd0f29aee682f6febe4b900b03706.exe /stext "C:\Users\Admin\AppData\Local\Temp\qurohjmbqwojuvyodn"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:516

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
e6a9369575cf812d14e256ef2c714c4a

SHA1
1e806d5bb834f413e62199ad31ebd1065a065eb4

SHA256
71ca30d8dd9270fa2e0f3c2d65345d8242399b311d46a75f52b788f443efee37

SHA512
725a19de41876df1ee89edd63e2b363e9359ed6ff43e10553afe7139792be0a01d9bad4bf7161e8e328260565e7128f2279e934ae082c1a84f8b67e19f03f780

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

Filesize
4KB

MD5
2538ec9e8425a905937573069b77d4c2

SHA1
ad0c2b7aff4382e23444d26adac96d9697b849f3

SHA256
29338949fae4c88a972837aae898529e4c7a2c4df35982eef2f8d7b602c17f4e

SHA512
a867a471b837b9c662528ee7a5904e8fe7b1eebb277b8a7fe4d4caf423fae914baf692bb5004c02ddb539b157d63326178467e28b03aa92a533cda19155d501c

Download Submit
memory/516-13-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/516-5-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/516-12-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/516-16-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/516-23-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3048-20-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3048-2-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3048-10-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3048-8-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3048-15-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3176-25-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3176-6-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3176-14-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3176-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3176-9-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4588-28-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4588-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4588-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4588-32-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4588-31-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4588-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

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