Analysis
- max time kernel
79s - max time network
111s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 20:33
Static task
static1
Behavioral task
behavioral1
Sample
PI-739.exe
Resource
win7v20201028
0 signatures
0 seconds
General
- Target PI-739.exe
- Size 446KB
- Sample201109-rn4efqm75e
- SHA256 c90e8c00718440709f2a708d2144adb877b2908b024e7a94bc20b4f9eb0ee92c
- MD5 81cc6cad17b05f8f3fe42d96096ad63a
- SHA1 225e8816eb8b24af6504d9b149bc4db4a350ea92
- SHA512 c91af3dcec1c25eea1092249a7738c510833c90e3b999600075bdaa32eda344d7308389e12cf9f1421387a7629181f3c3dcbae5fa30ed3ae4f26b23727f0183d
- MD5 SHA1 SHA512
Malware Config
Extracted
Family
-
agenttesla
Credentials
-
Protocol
smtp
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Host
us2.smtp.mailhostbox.com
-
Port
587
-
Username
-
Password
1xH}wgu7}f%E
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
resource yara_rule behavioral2/memory/208-1-0x000000000044A81E-mapping.dmp family_agenttesla behavioral2/memory/208-0-0x0000000000400000-0x0000000000450000-memory.dmp family_agenttesla - Looks for VirtualBox Guest Additions in registry 2 TTPs
- Looks for VMWare Tools registry key 2 TTPs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion PI-739.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion PI-739.exe - 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.
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum PI-739.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0 PI-739.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4004 set thread context of 208 4004 PI-739.exe 78 - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 208 PI-739.exe 208 PI-739.exe - Suspicious behavior: RenamesItself 1 IoCs
pid Process 208 PI-739.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 208 PI-739.exe - Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 4004 wrote to memory of 208 4004 PI-739.exe 78 PID 4004 wrote to memory of 208 4004 PI-739.exe 78 PID 4004 wrote to memory of 208 4004 PI-739.exe 78 PID 4004 wrote to memory of 208 4004 PI-739.exe 78 PID 4004 wrote to memory of 208 4004 PI-739.exe 78 PID 4004 wrote to memory of 208 4004 PI-739.exe 78 PID 4004 wrote to memory of 208 4004 PI-739.exe 78 PID 4004 wrote to memory of 208 4004 PI-739.exe 78 PID 208 wrote to memory of 2640 208 PI-739.exe 79 PID 208 wrote to memory of 2640 208 PI-739.exe 79 PID 208 wrote to memory of 2640 208 PI-739.exe 79
Processes
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C:\Users\Admin\AppData\Local\Temp\PI-739.exe"C:\Users\Admin\AppData\Local\Temp\PI-739.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4004 -
C:\Users\Admin\AppData\Local\Temp\PI-739.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:208 -
C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵PID:2640
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