Analysis
- max time kernel
139s - max time network
120s - platform
windows10_x64 - resource
win10-en-20211104 - submitted
08/12/2021, 06:50
General
- Target Swift Copy_pdf.exe
- Size 1.0MB
- Sample211208-hly2sabcf3
- SHA256 5c9c988efd5c29e9554c2e32bf48de98f10c55fdff7886f8b8113db40dee2f3d
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.huiijingco.com
-
Port
587
-
Username
-
Password
lNLUrZT2
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 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.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- 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.
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Swift Copy_pdf.exe"C:\Users\Admin\AppData\Local\Temp\Swift Copy_pdf.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Swift Copy_pdf.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Local\Temp\Swift Copy_pdf.exe"C:\Users\Admin\AppData\Local\Temp\Swift Copy_pdf.exe"2⤵
- 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/744-134-0x0000000000400000-0x000000000043C000-memory.dmp
memory/744-144-0x00000000052D0000-0x00000000057CE000-memory.dmp
memory/3020-148-0x0000000007F40000-0x0000000007F41000-memory.dmp
memory/3020-142-0x0000000004B62000-0x0000000004B63000-memory.dmp
memory/3020-226-0x000000007EFC0000-0x000000007EFC1000-memory.dmp
memory/3020-227-0x0000000004B63000-0x0000000004B64000-memory.dmp
memory/3020-171-0x0000000009980000-0x0000000009981000-memory.dmp
memory/3020-170-0x00000000097E0000-0x00000000097E1000-memory.dmp
memory/3020-130-0x0000000004A60000-0x0000000004A61000-memory.dmp
memory/3020-131-0x0000000004A60000-0x0000000004A61000-memory.dmp
memory/3020-132-0x0000000004BC0000-0x0000000004BC1000-memory.dmp
memory/3020-133-0x00000000075C0000-0x00000000075C1000-memory.dmp
memory/3020-165-0x0000000009430000-0x0000000009431000-memory.dmp
memory/3020-158-0x0000000009450000-0x0000000009483000-memory.dmp
memory/3020-151-0x0000000004A60000-0x0000000004A61000-memory.dmp
memory/3020-140-0x0000000007D10000-0x0000000007D11000-memory.dmp
memory/3020-150-0x00000000087A0000-0x00000000087A1000-memory.dmp
memory/3020-141-0x0000000004B60000-0x0000000004B61000-memory.dmp
memory/3020-143-0x0000000007C80000-0x0000000007C81000-memory.dmp
memory/3020-149-0x0000000008750000-0x0000000008751000-memory.dmp
memory/3020-147-0x0000000007F70000-0x0000000007F71000-memory.dmp
memory/3688-118-0x0000000000590000-0x0000000000591000-memory.dmp
memory/3688-120-0x0000000005430000-0x0000000005431000-memory.dmp
memory/3688-124-0x0000000005380000-0x0000000005381000-memory.dmp
memory/3688-121-0x0000000004F30000-0x0000000004F31000-memory.dmp
memory/3688-122-0x0000000004EB0000-0x0000000004EB1000-memory.dmp
memory/3688-123-0x0000000005160000-0x0000000005167000-memory.dmp
memory/3688-129-0x00000000094D0000-0x00000000094D1000-memory.dmp
memory/3688-127-0x0000000008850000-0x0000000008977000-memory.dmp
memory/3688-126-0x00000000087B0000-0x00000000087B1000-memory.dmp
memory/3688-125-0x0000000004F30000-0x000000000542E000-memory.dmp