Analysis
- max time kernel
117s - max time network
119s - platform
windows11-21h2_x64 - resource
win11-20250410-en - resource tags
- submitted
28/04/2025, 11:14
General
- Target DHL Express_AWB44633179800-708439321-pdf.exe
- Size 760KB
- Sample250428-nb2mtattew
- SHA256 4f111dd6b9cea83f8647ff3293c8df2962b052faacbee349867bed985a4703b9
Malware Config
Extracted
-
masslogger
-
https://api.telegram.org/bot8045982473:AAFEYwreZzjlMKB9VthIaqzI5KEItIDMgNM/sendMessage?chat_id=7731003424
-
exfiltration_mode
#TGEnabled
-
expire_time_date
2025-06-05
-
ssl_slate
False
Signatures
- MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- Masslogger family
- 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 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\DHL Express_AWB44633179800-708439321-pdf.exe"C:\Users\Admin\AppData\Local\Temp\DHL Express_AWB44633179800-708439321-pdf.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\DHL Express_AWB44633179800-708439321-pdf.exe"C:\Users\Admin\AppData\Local\Temp\DHL Express_AWB44633179800-708439321-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 v16
Replay Monitor
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Downloads
DHL Express_AWB44633179800-708439321-pdf.exe.log
memory/1828-4-0x0000000005360000-0x000000000536A000-memory.dmp
memory/1828-15-0x0000000074E80000-0x0000000075631000-memory.dmp
memory/1828-3-0x0000000005370000-0x0000000005402000-memory.dmp
memory/1828-0-0x0000000074E8E000-0x0000000074E8F000-memory.dmp
memory/1828-5-0x0000000074E80000-0x0000000075631000-memory.dmp
memory/1828-6-0x0000000005500000-0x000000000551A000-memory.dmp
memory/1828-7-0x0000000074E8E000-0x0000000074E8F000-memory.dmp
memory/1828-8-0x0000000074E80000-0x0000000075631000-memory.dmp
memory/1828-2-0x0000000005A00000-0x0000000005FA6000-memory.dmp
memory/1828-9-0x0000000004DB0000-0x0000000004E12000-memory.dmp
memory/1828-10-0x0000000006730000-0x00000000067CC000-memory.dmp
memory/1828-1-0x00000000007F0000-0x00000000008B4000-memory.dmp
memory/4956-14-0x0000000074E80000-0x0000000075631000-memory.dmp
memory/4956-11-0x0000000000400000-0x000000000041E000-memory.dmp
memory/4956-16-0x0000000074E80000-0x0000000075631000-memory.dmp
memory/4956-17-0x00000000063F0000-0x0000000006440000-memory.dmp
memory/4956-18-0x0000000006710000-0x00000000068D2000-memory.dmp
memory/4956-19-0x0000000074E80000-0x0000000075631000-memory.dmp