Analysis
-
max time kernel
122s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20240704-en -
resource tags
arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system -
submitted
03-10-2024 07:08
Static task
static1
Behavioral task
behavioral1
Sample
offer.pdf.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
offer.pdf.exe
Resource
win10v2004-20240802-en
General
-
Target
offer.pdf.exe
-
Size
1.1MB
-
MD5
ddd764f5db42b068e1d14bdb8e89e32e
-
SHA1
8bea1272325ac17dabd0f820e2e822035222bc13
-
SHA256
80901284eab8de2631adda7fd1f089640c1c5891f30a2c2de8c77c293d3a5e11
-
SHA512
b938f0d6a8d2a4f933c659576b711fa5691f203161ad2e8b2c2f96fb225446f131d2b2afb0d4964cccfa03e5e6247b763d2d82f19d6ff813cb0cbef09ea365db
-
SSDEEP
12288:Tu9e78iSqcgdCXBeOe/Zyt//EFz6s1x5/MctTWlMXH8TxoRDM02E3s4TmO9CwXtH:+u8gcRcZyFMF6spxJC/TyRoVE3b
Malware Config
Extracted
Protocol: ftp- Host:
ftp.awaratrendz.com - Port:
21 - Username:
[email protected] - Password:
Q&N.)e{R7G^]
Extracted
vipkeylogger
Signatures
-
VIPKeylogger
VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.
-
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.
-
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
-
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
offer.pdf.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 offer.pdf.exe Key opened \REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 offer.pdf.exe Key opened \REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 offer.pdf.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 4 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
offer.pdf.exedescription pid process target process PID 1648 set thread context of 2764 1648 offer.pdf.exe offer.pdf.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
offer.pdf.exeoffer.pdf.exepowershell.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language offer.pdf.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language offer.pdf.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
offer.pdf.exepowershell.exepid process 2764 offer.pdf.exe 2452 powershell.exe 2764 offer.pdf.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
offer.pdf.exepowershell.exedescription pid process Token: SeDebugPrivilege 2764 offer.pdf.exe Token: SeDebugPrivilege 2452 powershell.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
offer.pdf.exedescription pid process target process PID 1648 wrote to memory of 2452 1648 offer.pdf.exe powershell.exe PID 1648 wrote to memory of 2452 1648 offer.pdf.exe powershell.exe PID 1648 wrote to memory of 2452 1648 offer.pdf.exe powershell.exe PID 1648 wrote to memory of 2452 1648 offer.pdf.exe powershell.exe PID 1648 wrote to memory of 2764 1648 offer.pdf.exe offer.pdf.exe PID 1648 wrote to memory of 2764 1648 offer.pdf.exe offer.pdf.exe PID 1648 wrote to memory of 2764 1648 offer.pdf.exe offer.pdf.exe PID 1648 wrote to memory of 2764 1648 offer.pdf.exe offer.pdf.exe PID 1648 wrote to memory of 2764 1648 offer.pdf.exe offer.pdf.exe PID 1648 wrote to memory of 2764 1648 offer.pdf.exe offer.pdf.exe PID 1648 wrote to memory of 2764 1648 offer.pdf.exe offer.pdf.exe PID 1648 wrote to memory of 2764 1648 offer.pdf.exe offer.pdf.exe PID 1648 wrote to memory of 2764 1648 offer.pdf.exe offer.pdf.exe -
outlook_office_path 1 IoCs
Processes:
offer.pdf.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 offer.pdf.exe -
outlook_win_path 1 IoCs
Processes:
offer.pdf.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 offer.pdf.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\offer.pdf.exe"C:\Users\Admin\AppData\Local\Temp\offer.pdf.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1648 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\offer.pdf.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2452 -
C:\Users\Admin\AppData\Local\Temp\offer.pdf.exe"C:\Users\Admin\AppData\Local\Temp\offer.pdf.exe"2⤵
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2764
Network
MITRE ATT&CK Enterprise v15
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
2Credentials In Files
2