Analysis
- max time kernel
35s - max time network
131s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/02/2021, 16:32
General
- Target Reembolsos de pago_ENE_2021_427844262833u3322.scr
- Size 92KB
- Sample210209-4peyeythfs
- SHA256 ec655ac192ad85ee4a735eba7a5602fb63edae365625657f2389e0812b5f4ac5
Malware Config
Signatures
- MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- MassLogger Main Payload 2 IoCs
- Beds Protector Packer 1 IoCs
Detects Beds Protector packer used to load .NET malware.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Drops startup file 2 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- 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
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious behavior: EnumeratesProcesses 54 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Reembolsos de pago_ENE_2021_427844262833u3322.scr"C:\Users\Admin\AppData\Local\Temp\Reembolsos de pago_ENE_2021_427844262833u3322.scr" /S1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Reembolsos de pago_ENE_2021_427844262833u3322.scr"C:\Users\Admin\AppData\Local\Temp\Reembolsos de pago_ENE_2021_427844262833u3322.scr"2⤵
- Checks computer location settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/880-2-0x0000000073BB0000-0x000000007429E000-memory.dmp
memory/880-3-0x0000000000610000-0x0000000000611000-memory.dmp
memory/880-5-0x00000000052D0000-0x00000000052D1000-memory.dmp
memory/880-6-0x0000000004E70000-0x0000000004E71000-memory.dmp
memory/880-7-0x0000000004DF0000-0x0000000004DF1000-memory.dmp
memory/880-8-0x0000000004F10000-0x0000000004F11000-memory.dmp
memory/880-9-0x0000000009170000-0x00000000091F2000-memory.dmp
memory/880-10-0x0000000006870000-0x0000000006871000-memory.dmp
memory/880-11-0x0000000006910000-0x0000000006911000-memory.dmp
memory/880-12-0x0000000006AD0000-0x0000000006AD1000-memory.dmp
memory/2268-13-0x0000000000400000-0x0000000000486000-memory.dmp
memory/2268-15-0x0000000073BB0000-0x000000007429E000-memory.dmp
memory/2268-18-0x0000000005660000-0x0000000005661000-memory.dmp
memory/2268-23-0x0000000007280000-0x0000000007281000-memory.dmp
memory/2268-25-0x0000000007660000-0x00000000076ED000-memory.dmp
memory/2268-26-0x0000000005663000-0x0000000005665000-memory.dmp