Analysis
- max time kernel
138s - max time network
142s - platform
windows10-2004_x64 - resource
win10v2004-en-20220113 - submitted
21/02/2022, 22:22
General
- Target Hesap bildirimi.exe
- Size 680KB
- Sample220221-1962eacbek
- SHA256 9f86ac872435f541b72bd8da2719337f399b02ef8740a04f071b9044ae6ed397
Malware Config
Extracted
-
C:\Users\Admin\AppData\Local\Temp\2ABA732E76\Log.txt
-
masslogger
- ################################################################# MassLogger v1.3.4.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.51 Location: United States OS: Microsoft Windows 10 Pro64bit CPU: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 2/21/2022 10:22:16 PM MassLogger Started: 2/21/2022 10:22:11 PM Interval: 1 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Hesap bildirimi.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:
Extracted
-
Protocol
smtp
-
Host
smtp.yandex.com
-
Port
587
-
Username
-
Password
ihemeg1986
Signatures
- MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- MassLogger Main Payload 1 IoCs
- MassLogger log file 1 IoCs
Detects a log file produced by MassLogger.
- 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 profiles 1 TTPs 18 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.
- Drops file in Windows directory 6 IoCs
- Suspicious behavior: EnumeratesProcesses 1 IoCs
- Suspicious use of AdjustPrivilegeToken 7 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Hesap bildirimi.exe"C:\Users\Admin\AppData\Local\Temp\Hesap bildirimi.exe"1⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/4172-141-0x000002ABFBB60000-0x000002ABFBB70000-memory.dmp
memory/4172-143-0x000002ABFE790000-0x000002ABFE794000-memory.dmp
memory/4172-142-0x000002ABFC120000-0x000002ABFC130000-memory.dmp
memory/5100-136-0x0000000004E00000-0x0000000004E9C000-memory.dmp
memory/5100-137-0x0000000004D50000-0x0000000004D51000-memory.dmp
memory/5100-138-0x0000000002730000-0x0000000002731000-memory.dmp
memory/5100-139-0x0000000005250000-0x00000000052B6000-memory.dmp
memory/5100-140-0x0000000005960000-0x00000000059F2000-memory.dmp
memory/5100-133-0x0000000000310000-0x00000000003C0000-memory.dmp
memory/5100-135-0x0000000005310000-0x00000000058B4000-memory.dmp
memory/5100-134-0x000000007521E000-0x000000007521F000-memory.dmp
memory/5100-144-0x0000000006750000-0x000000000675A000-memory.dmp
memory/5100-145-0x0000000004D53000-0x0000000004D55000-memory.dmp
memory/5100-146-0x0000000000C10000-0x0000000000C60000-memory.dmp