Analysis
- max time kernel
102s - max time network
156s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
10/02/2023, 21:34
General
- Target swift_09_feb_2023_usd_42019347593691658483-37497169570422045546309802-2379924.exe
- Size 11KB
- Sample230210-1ercgaeb83
- SHA256 bc080be46ac6e8aaff225091e2afdb6074fed20e30d30e1ad018f58a1e1901b7
Malware Config
Extracted
-
purecrypter
-
https://vinosbiodinamicos.com/Wnsixjk.bmp
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.privateemail.com
-
Port
587
-
Username
-
Password
Jk$yZlcm39_3Sh*
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
- 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 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\swift_09_feb_2023_usd_42019347593691658483-37497169570422045546309802-2379924.exe"C:\Users\Admin\AppData\Local\Temp\swift_09_feb_2023_usd_42019347593691658483-37497169570422045546309802-2379924.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAANAA3AA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Local\Temp\swift_09_feb_2023_usd_42019347593691658483-37497169570422045546309802-2379924.exeC:\Users\Admin\AppData\Local\Temp\swift_09_feb_2023_usd_42019347593691658483-37497169570422045546309802-2379924.exe2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1536-140-0x0000000005E80000-0x0000000005EE6000-memory.dmp
memory/1536-141-0x0000000006600000-0x000000000661E000-memory.dmp
memory/1536-143-0x0000000006B00000-0x0000000006B1A000-memory.dmp
memory/1536-142-0x0000000007C70000-0x00000000082EA000-memory.dmp
memory/1536-137-0x0000000003010000-0x0000000003046000-memory.dmp
memory/1536-139-0x0000000005E10000-0x0000000005E76000-memory.dmp
memory/1536-138-0x00000000056E0000-0x0000000005D08000-memory.dmp
memory/1788-145-0x0000000000400000-0x0000000000430000-memory.dmp
memory/1788-146-0x0000000005EE0000-0x0000000005EEA000-memory.dmp
memory/1788-147-0x0000000006010000-0x0000000006060000-memory.dmp
memory/4028-132-0x0000000000680000-0x0000000000688000-memory.dmp
memory/4028-133-0x00000000055B0000-0x0000000005B54000-memory.dmp
memory/4028-135-0x0000000006CC0000-0x0000000006CE2000-memory.dmp
memory/4028-134-0x00000000050A0000-0x0000000005132000-memory.dmp