Analysis
- max time kernel
97s - max time network
104s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 20:11
General
- Target Halkbank_Ekstre_20200527_080247_232393.pdf.exe
- Size 398KB
- Sample201109-4xmm6narva
- SHA256 ea7084c6771d3582c0b95ef3cd3ce4e371cfcc7b41f358e8645e4bf4870fa2f2
Malware Config
Extracted
-
Protocol
smtp
-
Host
smtp.yandex.com
-
Port
587
-
Username
-
Password
335410
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.yandex.com
-
Port
587
-
Username
-
Password
335410
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- CoreEntity .NET Packer 1 IoCs
A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.
- AgentTesla Payload 2 IoCs
- rezer0 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
- Drops file in Drivers directory 1 IoCs
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- 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.
- Suspicious use of SetThreadContext 1 IoCs
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20200527_080247_232393.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20200527_080247_232393.pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20200527_080247_232393.pdf.exe"{path}"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20200527_080247_232393.pdf.exe"{path}"2⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
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-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/3284-9-0x0000000000400000-0x0000000000452000-memory.dmp
memory/3284-18-0x0000000005F70000-0x0000000005F71000-memory.dmp
memory/3284-17-0x0000000005390000-0x0000000005391000-memory.dmp
memory/3284-12-0x00000000739D0000-0x00000000740BE000-memory.dmp
memory/4800-4-0x0000000005190000-0x0000000005191000-memory.dmp
memory/4800-8-0x0000000007A50000-0x0000000007AA3000-memory.dmp
memory/4800-7-0x0000000007750000-0x0000000007752000-memory.dmp
memory/4800-6-0x0000000007880000-0x0000000007881000-memory.dmp
memory/4800-5-0x0000000007660000-0x0000000007661000-memory.dmp
memory/4800-0-0x00000000739D0000-0x00000000740BE000-memory.dmp
memory/4800-3-0x00000000055F0000-0x00000000055F1000-memory.dmp
memory/4800-1-0x00000000008D0000-0x00000000008D1000-memory.dmp