Analysis
- max time kernel
151s - max time network
113s - platform
windows10-2004_x64 - resource
win10v2004-20220331-en - submitted
06/04/2022, 17:29
General
- Target Tender notification05.04..2022.doc.exe
- Size 842KB
- Sample220406-v2l4dacefl
- SHA256 fe1f268ea15153b6f0e9935ce18b75a2da354ab2f84c3662b29e21054bf2cc22
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
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Host
smtp.yandex.com
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Port
587
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Username
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Password
mosqueboy100
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 1 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.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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.
- 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 17 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 20 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Tender notification05.04..2022.doc.exe"C:\Users\Admin\AppData\Local\Temp\Tender notification05.04..2022.doc.exe"1⤵
- Checks BIOS information in registry
- Checks computer location settings
- 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\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Tender notification05.04..2022.doc.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ZoVepZ.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZoVepZ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3BA1.tmp"2⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"2⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.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
powershell.exe.log
StartupProfileData-NonInteractive
tmp3BA1.tmp
memory/1176-148-0x0000000007630000-0x000000000764A000-memory.dmp
memory/1176-149-0x0000000004EC5000-0x0000000004EC7000-memory.dmp
memory/1176-154-0x0000000007950000-0x0000000007958000-memory.dmp
memory/1176-131-0x0000000004D60000-0x0000000004D96000-memory.dmp
memory/1176-132-0x0000000005500000-0x0000000005B28000-memory.dmp
memory/1176-133-0x0000000005360000-0x0000000005382000-memory.dmp
memory/1176-153-0x0000000007970000-0x000000000798A000-memory.dmp
memory/1176-152-0x0000000007860000-0x000000000786E000-memory.dmp
memory/1176-134-0x0000000005B30000-0x0000000005B96000-memory.dmp
memory/1176-151-0x00000000078B0000-0x0000000007946000-memory.dmp
memory/1176-150-0x00000000076A0000-0x00000000076AA000-memory.dmp
memory/1176-141-0x0000000006330000-0x000000000634E000-memory.dmp
memory/1176-146-0x0000000007C80000-0x00000000082FA000-memory.dmp
memory/1176-142-0x0000000007300000-0x0000000007332000-memory.dmp
memory/1176-143-0x0000000075A70000-0x0000000075ABC000-memory.dmp
memory/1176-145-0x0000000006850000-0x000000000686E000-memory.dmp
memory/1688-147-0x0000000002E35000-0x0000000002E37000-memory.dmp
memory/1688-144-0x0000000075A70000-0x0000000075ABC000-memory.dmp
memory/4628-140-0x0000000000400000-0x000000000043C000-memory.dmp
memory/4628-157-0x00000000062D0000-0x0000000006320000-memory.dmp
memory/4648-125-0x0000000005F70000-0x0000000006514000-memory.dmp
memory/4648-128-0x00000000092B0000-0x000000000934C000-memory.dmp
memory/4648-129-0x0000000009740000-0x00000000097A6000-memory.dmp
memory/4648-126-0x00000000059C0000-0x0000000005A52000-memory.dmp
memory/4648-127-0x0000000005A60000-0x0000000005A6A000-memory.dmp
memory/4648-124-0x0000000000F20000-0x0000000000FF8000-memory.dmp