remcos | 9a14a0e5b0f862ccc9e0fab771268c0d5d9e4fcd20223c9c3d405b1eb6124ba1

General

Target

17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe
Size

483KB
MD5

e92c2e665d49adef5260367bc9faaeeb
SHA1

1894725c9721a0c3f5a4a4e37ea6911520199c43
SHA256

9a14a0e5b0f862ccc9e0fab771268c0d5d9e4fcd20223c9c3d405b1eb6124ba1
SHA512

60b447018b0d25d10b85867917154e22970a407c2874ac72cee6f59d943120f722b83bc87f276c9ead00de767e09fdf97a5cb886b36ae276d2065673d6128c22
SSDEEP

6144:hTz+c6KHYBhDc1RGJdv//NkUn+N5Bkf/0TELRvIZPjbsAOZZmAX4cryT4:hTlrYw1RUh3NFn+N5WfIQIjbs/ZmZT4

Score

10^/10

remcos authur collection discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

authur

C2

authurremc.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-7B1J99
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/2380-14-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3364-15-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4400-21-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2380-18-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4400-13-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2380-11-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4400-10-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3364-12-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3364-26-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2380-14-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2380-18-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2380-11-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/3364-15-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3364-12-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3364-26-0x0000000000400000-0x0000000000478000-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-1-5-21-4182098368-2521458979-3782681353-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4436 set thread context of 3364	4436	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe	89
PID 4436 set thread context of 2380	4436	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe	90
PID 4436 set thread context of 4400	4436	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.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	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3364	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe
3364	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe
4400	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe
4400	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe
3364	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe
3364	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
4436	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe
4436	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe
4436	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4400	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4436 wrote to memory of 3364	4436	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe	89
PID 4436 wrote to memory of 3364	4436	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe	89
PID 4436 wrote to memory of 3364	4436	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe	89
PID 4436 wrote to memory of 2380	4436	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe	90
PID 4436 wrote to memory of 2380	4436	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe	90
PID 4436 wrote to memory of 2380	4436	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe	90
PID 4436 wrote to memory of 4400	4436	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe	91
PID 4436 wrote to memory of 4400	4436	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe	91
PID 4436 wrote to memory of 4400	4436	17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe	91

C:\Users\Admin\AppData\Local\Temp\17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe
"C:\Users\Admin\AppData\Local\Temp\17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4436
- C:\Users\Admin\AppData\Local\Temp\17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe
  C:\Users\Admin\AppData\Local\Temp\17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe /stext "C:\Users\Admin\AppData\Local\Temp\dkhuzqkezucxqpimgjw"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3364
- C:\Users\Admin\AppData\Local\Temp\17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe
  C:\Users\Admin\AppData\Local\Temp\17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe /stext "C:\Users\Admin\AppData\Local\Temp\ommmzivfncucaweqqujrdd"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:2380
- C:\Users\Admin\AppData\Local\Temp\17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe
  C:\Users\Admin\AppData\Local\Temp\17271612591ab6f17ada184393f4f649df7ae1e0875e1ed7c7f90b08ae9f86559128c060fa548.exe /stext "C:\Users\Admin\AppData\Local\Temp\qgsxabnzbkmpccsuzfvtoqknv"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4400

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:\Users\Admin\AppData\Local\Temp\dkhuzqkezucxqpimgjw

Filesize
4KB

MD5
faaa2b16df1bfc1a3792faaa35786349

SHA1
359534a59d7c5139ae205c24533ba60afdfb9f3f

SHA256
3586befc3b8b4da223e2ee0dcb00965ba5c0a205c14f2acefdeec7e46efddd5a

SHA512
2fbc79cace52a58e69ab983d034bb41ebb2496f767e18e5e4b31eefc4447c935d8614f744c71302e459350a05562fadc4c2355d76638b595e7cff1bb3d1618db

Download Submit
memory/2380-18-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2380-3-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2380-6-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2380-14-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2380-11-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3364-15-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3364-12-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3364-26-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3364-5-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3364-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4400-7-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4400-10-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4400-19-0x0000000000430000-0x00000000004F9000-memory.dmp

Filesize
804KB

Download
memory/4400-13-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4400-21-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4400-9-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4436-29-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4436-33-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4436-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4436-32-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4436-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

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