Analysis
- max time kernel
65s - max time network
67s - platform
windows7_x64 - resource
win7-20220901-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.
- 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.
- Modifies system certificate store 2 TTPs 6 IoCs
- Suspicious behavior: EnumeratesProcesses 1 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 16 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⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Modifies system certificate store
- 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
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Downloads
memory/1100-54-0x0000000001190000-0x0000000001198000-memory.dmp
memory/1100-55-0x0000000075AC1000-0x0000000075AC3000-memory.dmp
memory/1100-56-0x0000000005880000-0x0000000005934000-memory.dmp
memory/1100-57-0x0000000000610000-0x000000000062A000-memory.dmp
memory/1532-68-0x0000000000400000-0x0000000000430000-memory.dmp
memory/1532-63-0x0000000000400000-0x0000000000430000-memory.dmp
memory/1532-64-0x0000000000400000-0x0000000000430000-memory.dmp
memory/1532-66-0x0000000000400000-0x0000000000430000-memory.dmp
memory/1532-67-0x0000000000400000-0x0000000000430000-memory.dmp
memory/1532-71-0x0000000000400000-0x0000000000430000-memory.dmp
memory/1532-73-0x0000000000400000-0x0000000000430000-memory.dmp
memory/1764-60-0x000000006E700000-0x000000006ECAB000-memory.dmp
memory/1764-61-0x000000006E700000-0x000000006ECAB000-memory.dmp
memory/1764-62-0x000000006E700000-0x000000006ECAB000-memory.dmp