Analysis
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max time kernel
90s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
23-09-2022 06:27
Static task
static1
Behavioral task
behavioral1
Sample
Invoice.exe
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
Invoice.exe
Resource
win10v2004-20220812-en
General
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Target
Invoice.exe
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Size
790KB
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MD5
a190b2ff24d2c48c0a559e5721f0707b
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SHA1
ca664df590e439bb7f257d0948c1ba8d95119cbb
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SHA256
21aeef1143995fb050b42f9a93e8852996815350fb21ed0b5e6e7a5dd880b482
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SHA512
ce6f22152f7e5b83d9252962201136e4963612ab598e5f2b22b02adb35aa6485c235450f96f675d7ad1f178067f56f4f5745a23a65b14e11b5d436a0479f3469
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SSDEEP
12288:dBXCWFYHrpMc6xbmHwEi6ulLOGPq+bjQQzA9e:6dMLxCHriDZB1bjZzA
Malware Config
Extracted
Protocol: smtp- Host:
mail.pisc.lk - Port:
587 - Username:
[email protected] - Password:
PIsafeTY2021
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Drops file in Drivers directory 1 IoCs
Processes:
RegSvcs.exedescription ioc process File opened for modification C:\Windows\system32\drivers\etc\hosts RegSvcs.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
Invoice.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation Invoice.exe -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
RegSvcs.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe Key opened \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe Key opened \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Invoice.exedescription pid process target process PID 944 set thread context of 3384 944 Invoice.exe RegSvcs.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 6 IoCs
Processes:
Invoice.exepowershell.exeRegSvcs.exepid process 944 Invoice.exe 3984 powershell.exe 944 Invoice.exe 3384 RegSvcs.exe 3384 RegSvcs.exe 3984 powershell.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
Invoice.exepowershell.exeRegSvcs.exedescription pid process Token: SeDebugPrivilege 944 Invoice.exe Token: SeDebugPrivilege 3984 powershell.exe Token: SeDebugPrivilege 3384 RegSvcs.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
Invoice.exedescription pid process target process PID 944 wrote to memory of 3984 944 Invoice.exe powershell.exe PID 944 wrote to memory of 3984 944 Invoice.exe powershell.exe PID 944 wrote to memory of 3984 944 Invoice.exe powershell.exe PID 944 wrote to memory of 4080 944 Invoice.exe schtasks.exe PID 944 wrote to memory of 4080 944 Invoice.exe schtasks.exe PID 944 wrote to memory of 4080 944 Invoice.exe schtasks.exe PID 944 wrote to memory of 3384 944 Invoice.exe RegSvcs.exe PID 944 wrote to memory of 3384 944 Invoice.exe RegSvcs.exe PID 944 wrote to memory of 3384 944 Invoice.exe RegSvcs.exe PID 944 wrote to memory of 3384 944 Invoice.exe RegSvcs.exe PID 944 wrote to memory of 3384 944 Invoice.exe RegSvcs.exe PID 944 wrote to memory of 3384 944 Invoice.exe RegSvcs.exe PID 944 wrote to memory of 3384 944 Invoice.exe RegSvcs.exe PID 944 wrote to memory of 3384 944 Invoice.exe RegSvcs.exe -
outlook_office_path 1 IoCs
Processes:
RegSvcs.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe -
outlook_win_path 1 IoCs
Processes:
RegSvcs.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Invoice.exe"C:\Users\Admin\AppData\Local\Temp\Invoice.exe"1⤵
- Checks computer location settings
- 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\Roaming\EAQYFApq.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\EAQYFApq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8CBF.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⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp8CBF.tmpFilesize
1KB
MD588c615e032b605df1b37f454957fad6d
SHA14f60843be4c609f3fe02ebc852718f86a2a7ee50
SHA256584f3a40cef1f8b133a0f04b78d66951e59060bde252597e4e14df22634b48f7
SHA5122f42a0487e63721e2336052aa56b49d37745e1d5eb6a86bff75c56d8217c9a8ff640bcff011873c2a3797ba1242ea3c665ae4b26139a5ff6d8f82b7c0c86d018
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memory/944-133-0x0000000005350000-0x00000000058F4000-memory.dmpFilesize
5.6MB
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memory/944-134-0x0000000004C40000-0x0000000004CD2000-memory.dmpFilesize
584KB
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memory/944-135-0x0000000004C30000-0x0000000004C3A000-memory.dmpFilesize
40KB
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memory/944-136-0x0000000007690000-0x000000000772C000-memory.dmpFilesize
624KB
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memory/944-137-0x0000000007AA0000-0x0000000007B06000-memory.dmpFilesize
408KB
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memory/944-132-0x00000000001C0000-0x000000000028C000-memory.dmpFilesize
816KB
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memory/3384-143-0x0000000000000000-mapping.dmp
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memory/3384-154-0x0000000006860000-0x00000000068B0000-memory.dmpFilesize
320KB
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memory/3384-144-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/3984-145-0x0000000005F00000-0x0000000005F22000-memory.dmpFilesize
136KB
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memory/3984-151-0x0000000008070000-0x00000000086EA000-memory.dmpFilesize
6.5MB
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memory/3984-140-0x0000000005100000-0x0000000005136000-memory.dmpFilesize
216KB
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memory/3984-158-0x0000000007D40000-0x0000000007D48000-memory.dmpFilesize
32KB
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memory/3984-146-0x0000000005FA0000-0x0000000006006000-memory.dmpFilesize
408KB
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memory/3984-147-0x0000000006710000-0x000000000672E000-memory.dmpFilesize
120KB
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memory/3984-148-0x00000000076D0000-0x0000000007702000-memory.dmpFilesize
200KB
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memory/3984-149-0x00000000702E0000-0x000000007032C000-memory.dmpFilesize
304KB
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memory/3984-150-0x0000000006CD0000-0x0000000006CEE000-memory.dmpFilesize
120KB
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memory/3984-142-0x0000000005770000-0x0000000005D98000-memory.dmpFilesize
6.2MB
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memory/3984-152-0x0000000007A20000-0x0000000007A3A000-memory.dmpFilesize
104KB
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memory/3984-153-0x0000000007A90000-0x0000000007A9A000-memory.dmpFilesize
40KB
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memory/3984-155-0x0000000007CA0000-0x0000000007D36000-memory.dmpFilesize
600KB
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memory/3984-138-0x0000000000000000-mapping.dmp
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memory/3984-156-0x0000000007C50000-0x0000000007C5E000-memory.dmpFilesize
56KB
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memory/3984-157-0x0000000007D60000-0x0000000007D7A000-memory.dmpFilesize
104KB
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memory/4080-139-0x0000000000000000-mapping.dmp