Analysis
- max time kernel
150s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20240709-en - resource tags
- submitted
25/07/2024, 03:49
General
- Target e031d53424f8a015b4cf04ec035a7fa41c8f5eee4a88684d2a3a3d88399441f1.exe
- Size 1.0MB
- Sample240725-edp75azdnd
- SHA256 e031d53424f8a015b4cf04ec035a7fa41c8f5eee4a88684d2a3a3d88399441f1
Malware Config
Extracted
-
remcos
-
RemoteHost
-
103.186.116.90:67
-
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-U29DLE
-
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.
- Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
- Detected Nirsoft tools 4 IoCs
Free utilities often used by attackers which can steal passwords, product keys, etc.
- NirSoft MailPassView 2 IoCs
Password recovery tool for various email clients
- NirSoft WebBrowserPassView 1 IoCs
Password recovery tool for various web browsers
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
- Suspicious use of SetThreadContext 4 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 7 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 10 IoCs
- Suspicious behavior: MapViewOfSection 3 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 29 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\e031d53424f8a015b4cf04ec035a7fa41c8f5eee4a88684d2a3a3d88399441f1.exe"C:\Users\Admin\AppData\Local\Temp\e031d53424f8a015b4cf04ec035a7fa41c8f5eee4a88684d2a3a3d88399441f1.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\HYbWiJ.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HYbWiJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF09A.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Local\Temp\e031d53424f8a015b4cf04ec035a7fa41c8f5eee4a88684d2a3a3d88399441f1.exe"C:\Users\Admin\AppData\Local\Temp\e031d53424f8a015b4cf04ec035a7fa41c8f5eee4a88684d2a3a3d88399441f1.exe"2⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\e031d53424f8a015b4cf04ec035a7fa41c8f5eee4a88684d2a3a3d88399441f1.exeC:\Users\Admin\AppData\Local\Temp\e031d53424f8a015b4cf04ec035a7fa41c8f5eee4a88684d2a3a3d88399441f1.exe /stext "C:\Users\Admin\AppData\Local\Temp\lerpeuvsffybqt"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
-
-
C:\Users\Admin\AppData\Local\Temp\e031d53424f8a015b4cf04ec035a7fa41c8f5eee4a88684d2a3a3d88399441f1.exeC:\Users\Admin\AppData\Local\Temp\e031d53424f8a015b4cf04ec035a7fa41c8f5eee4a88684d2a3a3d88399441f1.exe /stext "C:\Users\Admin\AppData\Local\Temp\wyehfmgutnqgszqjd"3⤵
- Accesses Microsoft Outlook accounts
- System Location Discovery: System Language Discovery
-
-
C:\Users\Admin\AppData\Local\Temp\e031d53424f8a015b4cf04ec035a7fa41c8f5eee4a88684d2a3a3d88399441f1.exeC:\Users\Admin\AppData\Local\Temp\e031d53424f8a015b4cf04ec035a7fa41c8f5eee4a88684d2a3a3d88399441f1.exe /stext "C:\Users\Admin\AppData\Local\Temp\gbjaffqnhvitcfmnndgf"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
__PSScriptPolicyTest_xc4krnpw.klv.ps1
lerpeuvsffybqt
tmpF09A.tmp
memory/1880-19-0x0000000074B90000-0x0000000075340000-memory.dmp
memory/1880-18-0x0000000005300000-0x0000000005928000-memory.dmp
memory/1880-84-0x0000000007560000-0x0000000007574000-memory.dmp
memory/1880-83-0x0000000007550000-0x000000000755E000-memory.dmp
memory/1880-67-0x0000000007520000-0x0000000007531000-memory.dmp
memory/1880-66-0x00000000075A0000-0x0000000007636000-memory.dmp
memory/1880-65-0x0000000007390000-0x000000000739A000-memory.dmp
memory/1880-64-0x0000000007320000-0x000000000733A000-memory.dmp
memory/1880-63-0x0000000007960000-0x0000000007FDA000-memory.dmp
memory/1880-16-0x00000000026E0000-0x0000000002716000-memory.dmp
memory/1880-86-0x0000000007640000-0x0000000007648000-memory.dmp
memory/1880-41-0x0000000005A10000-0x0000000005D64000-memory.dmp
memory/1880-62-0x0000000006FE0000-0x0000000007083000-memory.dmp
memory/1880-85-0x0000000007660000-0x000000000767A000-memory.dmp
memory/1880-51-0x0000000071AE0000-0x0000000071B2C000-memory.dmp
memory/1880-61-0x0000000006FC0000-0x0000000006FDE000-memory.dmp
memory/1880-50-0x0000000006F80000-0x0000000006FB2000-memory.dmp
memory/1880-43-0x0000000006070000-0x00000000060BC000-memory.dmp
memory/1880-24-0x0000000074B90000-0x0000000075340000-memory.dmp
memory/1880-42-0x0000000005FE0000-0x0000000005FFE000-memory.dmp
memory/1880-29-0x0000000005220000-0x0000000005242000-memory.dmp
memory/1880-28-0x0000000074B90000-0x0000000075340000-memory.dmp
memory/1880-31-0x00000000059A0000-0x0000000005A06000-memory.dmp
memory/1880-90-0x0000000074B90000-0x0000000075340000-memory.dmp
memory/1880-30-0x0000000005930000-0x0000000005996000-memory.dmp
memory/2008-70-0x0000000000400000-0x0000000000478000-memory.dmp
memory/2008-72-0x0000000000400000-0x0000000000478000-memory.dmp
memory/2008-68-0x0000000000400000-0x0000000000478000-memory.dmp
memory/3508-3-0x0000000005290000-0x0000000005322000-memory.dmp
memory/3508-7-0x0000000005900000-0x0000000005914000-memory.dmp
memory/3508-5-0x0000000074B90000-0x0000000075340000-memory.dmp
memory/3508-4-0x0000000005350000-0x000000000535A000-memory.dmp
memory/3508-6-0x0000000006950000-0x0000000006A2E000-memory.dmp
memory/3508-0-0x0000000074B9E000-0x0000000074B9F000-memory.dmp
memory/3508-27-0x0000000074B90000-0x0000000075340000-memory.dmp
memory/3508-2-0x0000000005930000-0x0000000005ED4000-memory.dmp
memory/3508-1-0x00000000007B0000-0x00000000008C0000-memory.dmp
memory/3508-11-0x0000000009190000-0x000000000922C000-memory.dmp
memory/3508-10-0x0000000006540000-0x0000000006600000-memory.dmp
memory/3508-9-0x00000000064E0000-0x00000000064EE000-memory.dmp
memory/3508-8-0x0000000005920000-0x000000000592A000-memory.dmp
memory/3668-73-0x0000000000400000-0x0000000000462000-memory.dmp
memory/3668-77-0x0000000000400000-0x0000000000462000-memory.dmp
memory/3668-69-0x0000000000400000-0x0000000000462000-memory.dmp
memory/3668-71-0x0000000000400000-0x0000000000462000-memory.dmp
memory/4904-44-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4904-96-0x0000000010000000-0x0000000010019000-memory.dmp
memory/4904-106-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4904-22-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4904-105-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4904-26-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4904-21-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4904-49-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4904-47-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4904-46-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4904-45-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4904-20-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4904-92-0x0000000010000000-0x0000000010019000-memory.dmp
memory/4904-103-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4904-97-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4904-95-0x0000000010000000-0x0000000010019000-memory.dmp
memory/4904-25-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4904-98-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4904-99-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4904-100-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4904-101-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4904-102-0x0000000000400000-0x0000000000482000-memory.dmp
memory/5068-76-0x0000000000400000-0x0000000000424000-memory.dmp
memory/5068-78-0x0000000000400000-0x0000000000424000-memory.dmp
memory/5068-74-0x0000000000400000-0x0000000000424000-memory.dmp