Analysis
- max time kernel
51s - max time network
143s - platform
windows7_x64 - resource
win7-20230220-en - resource tags
- submitted
02/03/2023, 09:14
General
- Target tmp.exe
- Size 159KB
- Sample230302-k7lppacc36
- SHA256 c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6
Malware Config
Extracted
-
purecrypter
-
http://192.3.26.135/uo/Ksagb.png
Extracted
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snakekeylogger
-
Protocol
smtp
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Host
us2.smtp.mailhostbox.com
-
Port
587
-
Username
-
Password
doDHyw%0
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Email to
Signatures
- PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
- Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
- Snake Keylogger payload 7 IoCs
- Accesses Microsoft Outlook profiles 1 TTPs 3 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.
- 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 13 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1408-54-0x0000000001220000-0x000000000124E000-memory.dmp
memory/1408-55-0x0000000000A10000-0x0000000000A50000-memory.dmp
memory/1408-56-0x00000000065E0000-0x000000000671A000-memory.dmp
memory/1408-57-0x0000000004D80000-0x0000000004E12000-memory.dmp
memory/1408-62-0x0000000000A10000-0x0000000000A50000-memory.dmp
memory/1652-60-0x0000000001D60000-0x0000000001DA0000-memory.dmp
memory/1652-61-0x0000000001D60000-0x0000000001DA0000-memory.dmp
memory/1652-63-0x0000000001D60000-0x0000000001DA0000-memory.dmp
memory/1652-64-0x0000000001D60000-0x0000000001DA0000-memory.dmp
memory/1652-65-0x0000000001D60000-0x0000000001DA0000-memory.dmp
memory/1788-67-0x0000000000400000-0x0000000000426000-memory.dmp
memory/1788-68-0x0000000000400000-0x0000000000426000-memory.dmp
memory/1788-69-0x0000000000400000-0x0000000000426000-memory.dmp
memory/1788-70-0x0000000000400000-0x0000000000426000-memory.dmp
memory/1788-71-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp
memory/1788-72-0x0000000000400000-0x0000000000426000-memory.dmp
memory/1788-74-0x0000000000400000-0x0000000000426000-memory.dmp
memory/1788-76-0x0000000000400000-0x0000000000426000-memory.dmp
memory/1788-77-0x0000000004BF0000-0x0000000004C30000-memory.dmp
memory/1788-78-0x0000000004BF0000-0x0000000004C30000-memory.dmp