Analysis
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max time kernel
75s -
max time network
75s -
platform
windows7_x64 -
resource
win7 -
submitted
07-07-2020 09:55
Static task
static1
Behavioral task
behavioral1
Sample
Invoice 2078654.exe
Resource
win7
Behavioral task
behavioral2
Sample
Invoice 2078654.exe
Resource
win10
General
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Target
Invoice 2078654.exe
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Size
584KB
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MD5
305169143f17a668f43eba80eba3e4b7
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SHA1
244054c432b355b8cbddd0ce3928e72b684a59ef
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SHA256
40c2c761bdc8603d5bc7c0ef1668a16b7a6a9de062268418e53c8b399fa33adb
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SHA512
da444bfed98e406cbf5fb3848b4e59095dd03e2be4c3bd998dd198282db30bc3cd22847677758ac87ba2f9e3312daa836cd627877cfacf605c8d4ddcb643cae2
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.privateemail.com - Port:
587 - Username:
[email protected] - Password:
coronavirus2020
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 4 IoCs
Processes:
resource yara_rule behavioral1/memory/1888-2-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1888-3-0x0000000000446CAE-mapping.dmp family_agenttesla behavioral1/memory/1888-4-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1888-5-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Suspicious use of SetThreadContext 1 IoCs
Processes:
Invoice 2078654.exedescription pid process target process PID 1516 set thread context of 1888 1516 Invoice 2078654.exe Invoice 2078654.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
Invoice 2078654.exeInvoice 2078654.exepid process 1516 Invoice 2078654.exe 1888 Invoice 2078654.exe 1888 Invoice 2078654.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Invoice 2078654.exeInvoice 2078654.exedescription pid process Token: SeDebugPrivilege 1516 Invoice 2078654.exe Token: SeDebugPrivilege 1888 Invoice 2078654.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Invoice 2078654.exepid process 1888 Invoice 2078654.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
Invoice 2078654.exedescription pid process target process PID 1516 wrote to memory of 1388 1516 Invoice 2078654.exe schtasks.exe PID 1516 wrote to memory of 1388 1516 Invoice 2078654.exe schtasks.exe PID 1516 wrote to memory of 1388 1516 Invoice 2078654.exe schtasks.exe PID 1516 wrote to memory of 1388 1516 Invoice 2078654.exe schtasks.exe PID 1516 wrote to memory of 1888 1516 Invoice 2078654.exe Invoice 2078654.exe PID 1516 wrote to memory of 1888 1516 Invoice 2078654.exe Invoice 2078654.exe PID 1516 wrote to memory of 1888 1516 Invoice 2078654.exe Invoice 2078654.exe PID 1516 wrote to memory of 1888 1516 Invoice 2078654.exe Invoice 2078654.exe PID 1516 wrote to memory of 1888 1516 Invoice 2078654.exe Invoice 2078654.exe PID 1516 wrote to memory of 1888 1516 Invoice 2078654.exe Invoice 2078654.exe PID 1516 wrote to memory of 1888 1516 Invoice 2078654.exe Invoice 2078654.exe PID 1516 wrote to memory of 1888 1516 Invoice 2078654.exe Invoice 2078654.exe PID 1516 wrote to memory of 1888 1516 Invoice 2078654.exe Invoice 2078654.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Invoice 2078654.exe"C:\Users\Admin\AppData\Local\Temp\Invoice 2078654.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\KusildAzgqiD" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7657.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\Invoice 2078654.exe"C:\Users\Admin\AppData\Local\Temp\Invoice 2078654.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp7657.tmpMD5
4b07265a9456840cfde5e1d6e69492f1
SHA1b477a0914cd9ff31b2ba178647b9c62bff7184dd
SHA256ba5b6ee0605ada79f2cfecb2f901357ff4d503a055419d9df76c91eeca51e5bf
SHA51253f55e151fcafd4bdecc19c4e280d56fd1cf49ba9bb7fd4ee3d4bf9d1111b66d6044771377fcbb56944a0b0369d7d74ddff50fa95b2a641bede352fdd8beca22
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memory/1388-0-0x0000000000000000-mapping.dmp
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memory/1888-2-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/1888-3-0x0000000000446CAE-mapping.dmp
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memory/1888-4-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/1888-5-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB