Analysis
- max time kernel
140s - max time network
138s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
17/10/2024, 07:28
General
- Target Proforma Invoice_21-1541 And Packing List.pdf.exe
- Size 669KB
- Sample241017-jam1taxeqd
- SHA256 8a48ce8db35cc289949562cae156fce70a8e7f913b35515bce4cdc2741152b8b
Malware Config
Extracted
-
Protocol
smtp
-
Host
us2.smtp.mailhostbox.com
-
Port
587
-
Username
-
Password
(lqKKXb5
Extracted
-
vipkeylogger
-
Protocol
smtp
-
Host
us2.smtp.mailhostbox.com
-
Port
587
-
Username
-
Password
(lqKKXb5
-
Email to
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.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Browser Information Discovery 1 TTPs
Enumerate browser information.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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.
- 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 4 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Proforma Invoice_21-1541 And Packing List.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Proforma Invoice_21-1541 And Packing List.pdf.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- 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\vrhZELiHpiub.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\vrhZELiHpiub" /XML "C:\Users\Admin\AppData\Local\Temp\tmp361E.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Local\Temp\Proforma Invoice_21-1541 And Packing List.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Proforma Invoice_21-1541 And Packing List.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
-
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
2Credentials In Files
2Replay Monitor
Loading Replay Monitor...
Downloads
__PSScriptPolicyTest_35ey1yql.rmv.ps1
tmp361E.tmp
memory/1144-66-0x0000000006D90000-0x00000000072BC000-memory.dmp
memory/1144-36-0x0000000000400000-0x0000000000448000-memory.dmp
memory/1144-64-0x0000000006690000-0x0000000006852000-memory.dmp
memory/1144-65-0x0000000006530000-0x0000000006580000-memory.dmp
memory/2356-4-0x0000000002C00000-0x0000000002C0A000-memory.dmp
memory/2356-7-0x00000000744B0000-0x0000000074C60000-memory.dmp
memory/2356-8-0x0000000005340000-0x0000000005352000-memory.dmp
memory/2356-9-0x0000000007CA0000-0x0000000007D2C000-memory.dmp
memory/2356-10-0x000000000A410000-0x000000000A4AC000-memory.dmp
memory/2356-14-0x00000000744B0000-0x0000000074C60000-memory.dmp
memory/2356-6-0x00000000744BE000-0x00000000744BF000-memory.dmp
memory/2356-5-0x00000000744B0000-0x0000000074C60000-memory.dmp
memory/2356-3-0x00000000050A0000-0x0000000005132000-memory.dmp
memory/2356-38-0x00000000744B0000-0x0000000074C60000-memory.dmp
memory/2356-2-0x00000000057E0000-0x0000000005D84000-memory.dmp
memory/2356-1-0x00000000005E0000-0x000000000068E000-memory.dmp
memory/2356-0-0x00000000744BE000-0x00000000744BF000-memory.dmp
memory/3900-32-0x0000000006130000-0x0000000006484000-memory.dmp
memory/3900-52-0x0000000008090000-0x000000000870A000-memory.dmp
memory/3900-33-0x0000000006710000-0x000000000672E000-memory.dmp
memory/3900-34-0x0000000006750000-0x000000000679C000-memory.dmp
memory/3900-22-0x00000000060C0000-0x0000000006126000-memory.dmp
memory/3900-20-0x0000000005860000-0x0000000005882000-memory.dmp
memory/3900-18-0x00000000744B0000-0x0000000074C60000-memory.dmp
memory/3900-39-0x00000000076D0000-0x0000000007702000-memory.dmp
memory/3900-40-0x000000006ED00000-0x000000006ED4C000-memory.dmp
memory/3900-50-0x0000000006CF0000-0x0000000006D0E000-memory.dmp
memory/3900-51-0x0000000007710000-0x00000000077B3000-memory.dmp
memory/3900-21-0x0000000006050000-0x00000000060B6000-memory.dmp
memory/3900-53-0x0000000007A40000-0x0000000007A5A000-memory.dmp
memory/3900-54-0x0000000007AB0000-0x0000000007ABA000-memory.dmp
memory/3900-55-0x0000000007CC0000-0x0000000007D56000-memory.dmp
memory/3900-56-0x0000000007C40000-0x0000000007C51000-memory.dmp
memory/3900-57-0x0000000007C70000-0x0000000007C7E000-memory.dmp
memory/3900-58-0x0000000007C80000-0x0000000007C94000-memory.dmp
memory/3900-59-0x0000000007D80000-0x0000000007D9A000-memory.dmp
memory/3900-60-0x0000000007D60000-0x0000000007D68000-memory.dmp
memory/3900-63-0x00000000744B0000-0x0000000074C60000-memory.dmp
memory/3900-17-0x00000000058B0000-0x0000000005ED8000-memory.dmp
memory/3900-16-0x00000000744B0000-0x0000000074C60000-memory.dmp
memory/3900-15-0x0000000005160000-0x0000000005196000-memory.dmp