Analysis
- max time kernel
147s - max time network
147s - platform
windows10_x64 - resource
win10v20201028 - submitted
02/02/2021, 07:46
General
- Target POPurchase of Refined Sunflower Oil.exe
- Size 697KB
- Sample210202-ly4zywkh32
- SHA256 937eea1ca05515f8793eb5f189e4f9a05484ebc74fe3f4ccf46fa6d794f82374
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.sardaplywood.com
-
Port
587
-
Username
-
Password
sup123st45
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 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.
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- 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
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- 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 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\POPurchase of Refined Sunflower Oil.exe"C:\Users\Admin\AppData\Local\Temp\POPurchase of Refined Sunflower Oil.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
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ofQyyAsjlbVKLN" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3BF0.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\POPurchase of Refined Sunflower Oil.exe"{path}"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\POPurchase of Refined Sunflower Oil.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/412-11-0x00000000083F0000-0x00000000083F1000-memory.dmp
memory/412-5-0x0000000004F70000-0x0000000004F71000-memory.dmp
memory/412-7-0x0000000004D10000-0x0000000004D11000-memory.dmp
memory/412-8-0x0000000004B10000-0x0000000004B11000-memory.dmp
memory/412-9-0x0000000004E90000-0x0000000004E94000-memory.dmp
memory/412-10-0x00000000082C0000-0x000000000834B000-memory.dmp
memory/412-2-0x0000000073D40000-0x000000007442E000-memory.dmp
memory/412-12-0x0000000008490000-0x0000000008491000-memory.dmp
memory/412-3-0x00000000000D0000-0x00000000000D1000-memory.dmp
memory/412-6-0x0000000004B50000-0x0000000004B51000-memory.dmp
memory/3476-15-0x0000000000400000-0x000000000043C000-memory.dmp
memory/3476-18-0x0000000073D40000-0x000000007442E000-memory.dmp
memory/3476-23-0x00000000054D0000-0x00000000054D1000-memory.dmp
memory/3476-24-0x00000000059D0000-0x00000000059D1000-memory.dmp
memory/3476-28-0x00000000054D1000-0x00000000054D2000-memory.dmp