Analysis
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max time kernel
152s -
max time network
160s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
26-11-2022 14:05
Static task
static1
Behavioral task
behavioral1
Sample
5f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9.exe
Resource
win7-20220812-en
General
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Target
5f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9.exe
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Size
856KB
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MD5
6796097989ff8aa921d83d2a3553bb21
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SHA1
ccd7805053b00b3e14b703517662a0036f95acbb
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SHA256
5f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9
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SHA512
12262825e17afac04f28ff4eb986aaccf0f615f010fd9e8e043f423c65be64ad8a2508b9bce1da901e20d5770a97af447a384d5c9a76d162d19ba51a288747ae
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SSDEEP
24576:rEe1hYtljbiiIq9r+EpPinL6dTVUnCzoChg9:oeI/jvIq9v86dTVUnCzoCc
Malware Config
Signatures
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NirSoft MailPassView 5 IoCs
Password recovery tool for various email clients
Processes:
resource yara_rule behavioral2/memory/4840-142-0x0000000000400000-0x000000000048C000-memory.dmp MailPassView behavioral2/memory/3372-147-0x0000000000000000-mapping.dmp MailPassView behavioral2/memory/3372-148-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral2/memory/3372-150-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral2/memory/3372-151-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView -
NirSoft WebBrowserPassView 6 IoCs
Password recovery tool for various web browsers
Processes:
resource yara_rule behavioral2/memory/4840-142-0x0000000000400000-0x000000000048C000-memory.dmp WebBrowserPassView behavioral2/memory/3480-152-0x0000000000000000-mapping.dmp WebBrowserPassView behavioral2/memory/3480-153-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/3480-155-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/3480-156-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/3480-158-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView -
Nirsoft 10 IoCs
Processes:
resource yara_rule behavioral2/memory/4840-142-0x0000000000400000-0x000000000048C000-memory.dmp Nirsoft behavioral2/memory/3372-147-0x0000000000000000-mapping.dmp Nirsoft behavioral2/memory/3372-148-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/3372-150-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/3372-151-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/3480-152-0x0000000000000000-mapping.dmp Nirsoft behavioral2/memory/3480-153-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/3480-155-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/3480-156-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/3480-158-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft -
Executes dropped EXE 2 IoCs
Processes:
PcHealth.exePcHealth.exepid process 4336 PcHealth.exe 4840 PcHealth.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
5f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation 5f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9.exe -
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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Uses the VBS compiler for execution 1 TTPs
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Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
Processes:
vbc.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts vbc.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 19 whatismyipaddress.com -
Maps connected drives based on registry 3 TTPs 4 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
5f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9.exePcHealth.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum 5f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 5f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum PcHealth.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 PcHealth.exe -
Suspicious use of SetThreadContext 3 IoCs
Processes:
PcHealth.exePcHealth.exedescription pid process target process PID 4336 set thread context of 4840 4336 PcHealth.exe PcHealth.exe PID 4840 set thread context of 3372 4840 PcHealth.exe vbc.exe PID 4840 set thread context of 3480 4840 PcHealth.exe vbc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
5f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9.exePcHealth.exevbc.exePcHealth.exepid process 3228 5f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 3480 vbc.exe 3480 vbc.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4840 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe 4336 PcHealth.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
5f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9.exePcHealth.exePcHealth.exedescription pid process Token: SeDebugPrivilege 3228 5f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9.exe Token: SeDebugPrivilege 4336 PcHealth.exe Token: SeDebugPrivilege 4840 PcHealth.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
PcHealth.exepid process 4840 PcHealth.exe -
Suspicious use of WriteProcessMemory 35 IoCs
Processes:
5f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9.execmd.exePcHealth.exePcHealth.exedescription pid process target process PID 3228 wrote to memory of 4512 3228 5f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9.exe cmd.exe PID 3228 wrote to memory of 4512 3228 5f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9.exe cmd.exe PID 3228 wrote to memory of 4512 3228 5f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9.exe cmd.exe PID 4512 wrote to memory of 1492 4512 cmd.exe reg.exe PID 4512 wrote to memory of 1492 4512 cmd.exe reg.exe PID 4512 wrote to memory of 1492 4512 cmd.exe reg.exe PID 3228 wrote to memory of 4336 3228 5f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9.exe PcHealth.exe PID 3228 wrote to memory of 4336 3228 5f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9.exe PcHealth.exe PID 3228 wrote to memory of 4336 3228 5f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9.exe PcHealth.exe PID 4336 wrote to memory of 4840 4336 PcHealth.exe PcHealth.exe PID 4336 wrote to memory of 4840 4336 PcHealth.exe PcHealth.exe PID 4336 wrote to memory of 4840 4336 PcHealth.exe PcHealth.exe PID 4336 wrote to memory of 4840 4336 PcHealth.exe PcHealth.exe PID 4336 wrote to memory of 4840 4336 PcHealth.exe PcHealth.exe PID 4336 wrote to memory of 4840 4336 PcHealth.exe PcHealth.exe PID 4336 wrote to memory of 4840 4336 PcHealth.exe PcHealth.exe PID 4336 wrote to memory of 4840 4336 PcHealth.exe PcHealth.exe PID 4840 wrote to memory of 3372 4840 PcHealth.exe vbc.exe PID 4840 wrote to memory of 3372 4840 PcHealth.exe vbc.exe PID 4840 wrote to memory of 3372 4840 PcHealth.exe vbc.exe PID 4840 wrote to memory of 3372 4840 PcHealth.exe vbc.exe PID 4840 wrote to memory of 3372 4840 PcHealth.exe vbc.exe PID 4840 wrote to memory of 3372 4840 PcHealth.exe vbc.exe PID 4840 wrote to memory of 3372 4840 PcHealth.exe vbc.exe PID 4840 wrote to memory of 3372 4840 PcHealth.exe vbc.exe PID 4840 wrote to memory of 3372 4840 PcHealth.exe vbc.exe PID 4840 wrote to memory of 3480 4840 PcHealth.exe vbc.exe PID 4840 wrote to memory of 3480 4840 PcHealth.exe vbc.exe PID 4840 wrote to memory of 3480 4840 PcHealth.exe vbc.exe PID 4840 wrote to memory of 3480 4840 PcHealth.exe vbc.exe PID 4840 wrote to memory of 3480 4840 PcHealth.exe vbc.exe PID 4840 wrote to memory of 3480 4840 PcHealth.exe vbc.exe PID 4840 wrote to memory of 3480 4840 PcHealth.exe vbc.exe PID 4840 wrote to memory of 3480 4840 PcHealth.exe vbc.exe PID 4840 wrote to memory of 3480 4840 PcHealth.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\5f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9.exe"C:\Users\Admin\AppData\Local\Temp\5f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9.exe"1⤵
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3228 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c reg add "HKCU\Software\Microsoft\WindowsNT\CurrentVersion\Windows" /f /v "Load" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\PcHealth.exe" & exit2⤵
- Suspicious use of WriteProcessMemory
PID:4512 -
C:\Windows\SysWOW64\reg.exereg add "HKCU\Software\Microsoft\WindowsNT\CurrentVersion\Windows" /f /v "Load" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\PcHealth.exe"3⤵PID:1492
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C:\Users\Admin\AppData\Roaming\PcHealth.exe"C:\Users\Admin\AppData\Roaming\PcHealth.exe"2⤵
- Executes dropped EXE
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4336 -
C:\Users\Admin\AppData\Roaming\PcHealth.exe"C:\Users\Admin\AppData\Roaming\PcHealth.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4840 -
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exeC:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"4⤵
- Accesses Microsoft Outlook accounts
PID:3372
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exeC:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3480
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3KB
MD5f94dc819ca773f1e3cb27abbc9e7fa27
SHA19a7700efadc5ea09ab288544ef1e3cd876255086
SHA256a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92
SHA51272a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196
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Filesize
856KB
MD56796097989ff8aa921d83d2a3553bb21
SHA1ccd7805053b00b3e14b703517662a0036f95acbb
SHA2565f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9
SHA51212262825e17afac04f28ff4eb986aaccf0f615f010fd9e8e043f423c65be64ad8a2508b9bce1da901e20d5770a97af447a384d5c9a76d162d19ba51a288747ae
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Filesize
856KB
MD56796097989ff8aa921d83d2a3553bb21
SHA1ccd7805053b00b3e14b703517662a0036f95acbb
SHA2565f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9
SHA51212262825e17afac04f28ff4eb986aaccf0f615f010fd9e8e043f423c65be64ad8a2508b9bce1da901e20d5770a97af447a384d5c9a76d162d19ba51a288747ae
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Filesize
856KB
MD56796097989ff8aa921d83d2a3553bb21
SHA1ccd7805053b00b3e14b703517662a0036f95acbb
SHA2565f81c6852cc89916688dd380bf23185a1fcf2cd7fb5a93da32d22644ef0769c9
SHA51212262825e17afac04f28ff4eb986aaccf0f615f010fd9e8e043f423c65be64ad8a2508b9bce1da901e20d5770a97af447a384d5c9a76d162d19ba51a288747ae