Analysis
- max time kernel
117s - max time network
135s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 19:48
General
- Target Adm Schedulepdf.exe
- Size 447KB
- Sample201109-j4e5dh2j2s
- SHA256 491be1f8a5ce9a806ed1338530b892a9f17c7ae1cd21464485d5945efcc65bea
Malware Config
Extracted
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Protocol
smtp
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Host
sg2plcpnl0180.prod.sin2.secureserver.net
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Port
587
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Username
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Password
Prasad@gis3
Extracted
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agenttesla
-
Protocol
smtp
-
Host
sg2plcpnl0180.prod.sin2.secureserver.net
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Port
587
-
Username
-
Password
Prasad@gis3
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- CoreEntity .NET Packer 1 IoCs
A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.
- AgentTesla Payload 2 IoCs
- rezer0 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
- 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.
- 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 WriteProcessMemory 17 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\Adm Schedulepdf.exe"C:\Users\Admin\AppData\Local\Temp\Adm Schedulepdf.exe"1⤵
- 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\QFYCdRDKlFx" /XML "C:\Users\Admin\AppData\Local\Temp\tmp719C.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\Adm Schedulepdf.exe"{path}"2⤵
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C:\Users\Admin\AppData\Local\Temp\Adm Schedulepdf.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/3808-22-0x00000000062F0000-0x00000000062F1000-memory.dmp
memory/3808-21-0x00000000057F0000-0x00000000057F1000-memory.dmp
memory/3808-16-0x0000000073430000-0x0000000073B1E000-memory.dmp
memory/3808-13-0x0000000000400000-0x0000000000450000-memory.dmp
memory/4684-5-0x0000000005720000-0x0000000005721000-memory.dmp
memory/4684-10-0x0000000009CE0000-0x0000000009CE1000-memory.dmp
memory/4684-9-0x0000000006610000-0x0000000006661000-memory.dmp
memory/4684-8-0x00000000058C0000-0x00000000058C3000-memory.dmp
memory/4684-7-0x0000000005560000-0x0000000005561000-memory.dmp
memory/4684-0-0x0000000073430000-0x0000000073B1E000-memory.dmp
memory/4684-4-0x0000000009F00000-0x0000000009F01000-memory.dmp
memory/4684-3-0x0000000005490000-0x00000000054E7000-memory.dmp
memory/4684-1-0x0000000000CB0000-0x0000000000CB1000-memory.dmp