remcos | c9c5b7bbbac48c507f825ef76acab3e999d89c15ebe265dfaffa7131fc405510

General

Target

17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
Size

483KB
MD5

57d3d8dd95d86ac35f4b428da9cc1e30
SHA1

2d0e4dacf5c0f063bdf95f120b505419bc51cfe0
SHA256

c9c5b7bbbac48c507f825ef76acab3e999d89c15ebe265dfaffa7131fc405510
SHA512

d63b343e25bb3f3fe7f9b519217503039aaee8d6f318d6e332698bf1268c680bfd2ed9b97c5c365cee0318050864c99081205a35898ade5b5587401198a712d1
SSDEEP

12288:wTlrYw1RUh3NFn+N5WfIQIjbs/ZBXVT4:ApRUh3NDfIQIjeZV

Score

10^/10

remcos remotehost collection discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

idabo.duckdns.org:6875

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-I89M3S
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 8 IoCs

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

resource	yara_rule
behavioral2/memory/1080-15-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4428-20-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3084-24-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3084-14-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3084-12-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1080-11-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4428-10-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1080-26-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/4428-20-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4428-10-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/1080-15-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1080-11-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1080-26-0x0000000000400000-0x0000000000478000-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-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2008 set thread context of 1080	2008	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	86
PID 2008 set thread context of 4428	2008	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	87
PID 2008 set thread context of 3084	2008	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	88

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	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1080	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
1080	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
3084	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
3084	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
1080	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
1080	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2008	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
2008	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
2008	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3084	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2008	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2008 wrote to memory of 1080	2008	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	86
PID 2008 wrote to memory of 1080	2008	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	86
PID 2008 wrote to memory of 1080	2008	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	86
PID 2008 wrote to memory of 4428	2008	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	87
PID 2008 wrote to memory of 4428	2008	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	87
PID 2008 wrote to memory of 4428	2008	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	87
PID 2008 wrote to memory of 3084	2008	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	88
PID 2008 wrote to memory of 3084	2008	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	88
PID 2008 wrote to memory of 3084	2008	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	88

C:\Users\Admin\AppData\Local\Temp\17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
"C:\Users\Admin\AppData\Local\Temp\17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.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:2008
- C:\Users\Admin\AppData\Local\Temp\17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\ypbxuszapaqjmlhecu"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:1080
- C:\Users\Admin\AppData\Local\Temp\17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\brgqnkjbdiiwprdimfzye"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:4428
- C:\Users\Admin\AppData\Local\Temp\17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\llmiovcvrqabzxrmdquzpmdbv"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3084

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
a5f45e5dc660293afd63f4100f93a9e2

SHA1
99e947ca8382b998ead739a074145cfcc151e11f

SHA256
9ffda10457e31948ded195b7853f3b88433bc6d5e85a49c311a53f0fab85fbec

SHA512
2d92fb62b984edad62915072b7768f55280856866c89cfb7bf1f7a1f822b60253d231940cc19dfa2862f87c317c07f55e2d9691597fcd97798c3909a60b9a3af

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

Filesize
4KB

MD5
79f35c7500a5cc739c1974804710441f

SHA1
24fdf1fa45049fc1a83925c45357bc3058bad060

SHA256
897101ed9da25ab0f10e8ad1aeb8dabc3282ccfdb6d3171dbac758117b8731f4

SHA512
03281e8abecff4e7d1f563596a4fd2513e016b7fbf011a455141460f9448d00b4a4666d2036cb448a8ac9a6feebeb51b366289ffa2ee5524a062fe8869aec61e

Download Submit
memory/1080-11-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1080-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1080-15-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1080-26-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1080-8-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2008-33-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2008-29-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2008-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2008-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2008-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2008-32-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3084-24-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3084-5-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3084-22-0x0000000000430000-0x00000000004F9000-memory.dmp

Filesize
804KB

Download
memory/3084-9-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3084-14-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3084-12-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4428-13-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4428-20-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4428-10-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4428-3-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download

Analysis

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