Analysis
- max time kernel
110s - max time network
146s - platform
windows10_x64 - resource
win10 - submitted
27/08/2020, 08:10
General
- Target img-602105445-0004.exe
- Size 674KB
- Sample200827-s43lpkwp7n
- SHA256 ae97f320b8367d49172cc3a96acd6bc765ba935ad5426d126f8fcc2b4a2fc094
Malware Config
Extracted
-
Protocol
smtp
-
Host
Smtp.yandex.ru
-
Port
587
-
Username
-
Password
shawama1000
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 3 IoCs
- 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.
- 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.
- Suspicious use of SetThreadContext 1 IoCs
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\img-602105445-0004.exe"C:\Users\Admin\AppData\Local\Temp\img-602105445-0004.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\lsoFSLWY" /XML "C:\Users\Admin\AppData\Local\Temp\tmp88B3.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\img-602105445-0004.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/2168-9-0x000000000C2A0000-0x000000000C2A1000-memory.dmp
memory/2168-1-0x0000000000FC0000-0x0000000000FC1000-memory.dmp
memory/2168-4-0x0000000005850000-0x0000000005851000-memory.dmp
memory/2168-5-0x0000000005EF0000-0x0000000005EF1000-memory.dmp
memory/2168-6-0x00000000062D0000-0x000000000635C000-memory.dmp
memory/2168-7-0x0000000008930000-0x00000000089AB000-memory.dmp
memory/2168-3-0x0000000003200000-0x0000000003207000-memory.dmp
memory/2168-8-0x000000000C200000-0x000000000C201000-memory.dmp
memory/2168-0-0x0000000073670000-0x0000000073D5E000-memory.dmp
memory/3408-12-0x0000000000400000-0x0000000000466000-memory.dmp
memory/3408-14-0x0000000073670000-0x0000000073D5E000-memory.dmp
memory/3408-17-0x00000000057D0000-0x00000000057D1000-memory.dmp
memory/3408-19-0x00000000050E0000-0x00000000050E1000-memory.dmp
memory/3408-22-0x0000000006720000-0x0000000006721000-memory.dmp