Analysis
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max time kernel
154s -
max time network
178s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 00:59
Static task
static1
Behavioral task
behavioral1
Sample
INV01.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
INV01.exe
Resource
win10v2004-20220414-en
General
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Target
INV01.exe
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Size
440KB
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MD5
b9743458d1fc6404f135ad3316f174b9
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SHA1
1df0673acc0e37439031915478b2ae8817fbd478
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SHA256
d31acad1f441efed4a4cef4782ff79cce51d37a1e78b8a9af72c484326e5fd01
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SHA512
71b07f3b916cb60a4f7186420e1daa42616f2bc1e60679ed00d53e832dbc23d5b2b12ec9c96d894269fe366223855d656c240c0093d8a27e98f16fd49f307889
Malware Config
Extracted
Protocol: ftp- Host:
ftp.nedtek.com.au - Port:
21 - Username:
[email protected] - Password:
philomina1234567890
Extracted
agenttesla
Protocol: ftp- Host:
ftp://ftp.nedtek.com.au/ - Port:
21 - Username:
[email protected] - Password:
philomina1234567890
Protocol: ftp- Host:
ftp://ftp.nedtek.com.au/ - Port:
21 - Username:
[email protected] - Password:
philomina1234567890
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/2464-134-0x0000000000400000-0x0000000000452000-memory.dmp family_agenttesla -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
INV01.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation INV01.exe -
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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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
INV01.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INV01.exe Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INV01.exe Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INV01.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
INV01.exedescription pid process target process PID 3628 set thread context of 2464 3628 INV01.exe INV01.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 2 IoCs
Processes:
INV01.exepid process 2464 INV01.exe 2464 INV01.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
INV01.exedescription pid process Token: SeDebugPrivilege 2464 INV01.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
INV01.exeINV01.exedescription pid process target process PID 3628 wrote to memory of 2264 3628 INV01.exe schtasks.exe PID 3628 wrote to memory of 2264 3628 INV01.exe schtasks.exe PID 3628 wrote to memory of 2264 3628 INV01.exe schtasks.exe PID 3628 wrote to memory of 2464 3628 INV01.exe INV01.exe PID 3628 wrote to memory of 2464 3628 INV01.exe INV01.exe PID 3628 wrote to memory of 2464 3628 INV01.exe INV01.exe PID 3628 wrote to memory of 2464 3628 INV01.exe INV01.exe PID 3628 wrote to memory of 2464 3628 INV01.exe INV01.exe PID 3628 wrote to memory of 2464 3628 INV01.exe INV01.exe PID 3628 wrote to memory of 2464 3628 INV01.exe INV01.exe PID 3628 wrote to memory of 2464 3628 INV01.exe INV01.exe PID 2464 wrote to memory of 4236 2464 INV01.exe netsh.exe PID 2464 wrote to memory of 4236 2464 INV01.exe netsh.exe PID 2464 wrote to memory of 4236 2464 INV01.exe netsh.exe -
outlook_office_path 1 IoCs
Processes:
INV01.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INV01.exe -
outlook_win_path 1 IoCs
Processes:
INV01.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INV01.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\INV01.exe"C:\Users\Admin\AppData\Local\Temp\INV01.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WCzIUAlb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp84C0.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\INV01.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
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C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\INV01.exe.logFilesize
496B
MD5cb76b18ebed3a9f05a14aed43d35fba6
SHA1836a4b4e351846fca08b84149cb734cb59b8c0d6
SHA2568d0edecf54cbbdf7981c8e41a3ed8621503188a87415f9af0fb8d890b138c349
SHA5127631141e4a6dda29452ada666326837372cd3d045f773006f63d9eff15d9432ed00029d9108a72c1a3b858377600a2aab2c9ec03764285c8801b6019babcf21c
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C:\Users\Admin\AppData\Local\Temp\tmp84C0.tmpFilesize
1KB
MD53aaeed132a1a06182f190470f4483bf6
SHA132e2c02da92a40e309b4db5b1a67db01e328573f
SHA25608d512b65c8d870dc82a82ef22abcc78b60905f98f2d0217091315690a98cd0d
SHA512cb5c9bb74677b628f016b98cb8cd7f279e7426c14bfcf6461105f0c72b8dc6b18d0273ecf1d4d9b4f0aede424fe55b11a51cbf94abeb06813a6ab67a2b1deb6c
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memory/2264-131-0x0000000000000000-mapping.dmp
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memory/2464-133-0x0000000000000000-mapping.dmp
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memory/2464-134-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB
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memory/2464-136-0x0000000075400000-0x00000000759B1000-memory.dmpFilesize
5.7MB
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memory/3628-130-0x0000000075400000-0x00000000759B1000-memory.dmpFilesize
5.7MB
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memory/4236-137-0x0000000000000000-mapping.dmp