Analysis
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max time kernel
125s -
max time network
129s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
25-09-2024 06:31
Static task
static1
Behavioral task
behavioral1
Sample
MCB_09252024.pdf.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
MCB_09252024.pdf.exe
Resource
win10v2004-20240802-en
General
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Target
MCB_09252024.pdf.exe
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Size
940KB
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MD5
d0ea74bc92edf6c15ec891218fa6ec82
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SHA1
9e16672d91e4eceb3ceb6c4592baba252ee56edf
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SHA256
a947fb714131dc2a3ebdbab989f241713e51d629e00b292b5e6111e8c1506ae3
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SHA512
d3e025fe052104b88970e3efbc7dd174bd0d0965b977f3f1a4274f7302a000b54c4f41824963ef2f393bcf30f0e0760e1f822cb02ffb7956f26a08a430b58d94
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SSDEEP
12288:83FQovvvDg6BCQC+5MnwNJhW3EFPwUpkFhCNQB4UOWTFqeUOlv/y/FUsjtzVbiSg:8GGvvM6RCwNNyEFPNOZOWTF32Usjj6
Malware Config
Extracted
vipkeylogger
Protocol: smtp- Host:
mail.leedelectronics.top - Port:
587 - Username:
[email protected] - Password:
7213575aceACE@@ - Email To:
[email protected]
Signatures
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Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
Processes:
MCB_09252024.pdf.exedescription pid Process procid_target PID 2484 created 3380 2484 MCB_09252024.pdf.exe 56 -
VIPKeylogger
VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
MCB_09252024.pdf.exedescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation MCB_09252024.pdf.exe -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
InstallUtil.exedescription ioc Process Key opened \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 InstallUtil.exe Key opened \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 InstallUtil.exe Key opened \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 InstallUtil.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
MCB_09252024.pdf.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Gxsnzuhetww = "C:\\Users\\Admin\\AppData\\Roaming\\Gxsnzuhetww.exe" MCB_09252024.pdf.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 22 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
MCB_09252024.pdf.exedescription pid Process procid_target PID 2484 set thread context of 4600 2484 MCB_09252024.pdf.exe 92 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
MCB_09252024.pdf.exepowershell.exeInstallUtil.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language MCB_09252024.pdf.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language InstallUtil.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
powershell.exeMCB_09252024.pdf.exeInstallUtil.exepid Process 2476 powershell.exe 2476 powershell.exe 2484 MCB_09252024.pdf.exe 4600 InstallUtil.exe 4600 InstallUtil.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
MCB_09252024.pdf.exepowershell.exeInstallUtil.exedescription pid Process Token: SeDebugPrivilege 2484 MCB_09252024.pdf.exe Token: SeDebugPrivilege 2476 powershell.exe Token: SeDebugPrivilege 2484 MCB_09252024.pdf.exe Token: SeDebugPrivilege 4600 InstallUtil.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
MCB_09252024.pdf.exedescription pid Process procid_target PID 2484 wrote to memory of 2476 2484 MCB_09252024.pdf.exe 90 PID 2484 wrote to memory of 2476 2484 MCB_09252024.pdf.exe 90 PID 2484 wrote to memory of 2476 2484 MCB_09252024.pdf.exe 90 PID 2484 wrote to memory of 4600 2484 MCB_09252024.pdf.exe 92 PID 2484 wrote to memory of 4600 2484 MCB_09252024.pdf.exe 92 PID 2484 wrote to memory of 4600 2484 MCB_09252024.pdf.exe 92 PID 2484 wrote to memory of 4600 2484 MCB_09252024.pdf.exe 92 PID 2484 wrote to memory of 4600 2484 MCB_09252024.pdf.exe 92 PID 2484 wrote to memory of 4600 2484 MCB_09252024.pdf.exe 92 PID 2484 wrote to memory of 4600 2484 MCB_09252024.pdf.exe 92 PID 2484 wrote to memory of 4600 2484 MCB_09252024.pdf.exe 92 -
outlook_office_path 1 IoCs
Processes:
InstallUtil.exedescription ioc Process Key opened \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 InstallUtil.exe -
outlook_win_path 1 IoCs
Processes:
InstallUtil.exedescription ioc Process Key opened \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 InstallUtil.exe
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:3380
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C:\Users\Admin\AppData\Local\Temp\MCB_09252024.pdf.exe"C:\Users\Admin\AppData\Local\Temp\MCB_09252024.pdf.exe"2⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2484 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc QQBkAGQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEMAOgBcAFUAcwBlAHIAcwBcAEEAZABtAGkAbgBcAEEAcABwAEQAYQB0AGEAXABMAG8AYwBhAGwAXABUAGUAbQBwAFwATQBDAEIAXwAwADkAMgA1ADIAMAAyADQALgBwAGQAZgAuAGUAeABlADsAIABBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAALQBFAHgAYwBsAHUAcwBpAG8AbgBQAHIAbwBjAGUAcwBzACAAQwA6AFwAVQBzAGUAcgBzAFwAQQBkAG0AaQBuAFwAQQBwAHAARABhAHQAYQBcAEwAbwBjAGEAbABcAFQAZQBtAHAAXABNAEMAQgBfADAAOQAyADUAMgAwADIANAAuAHAAZABmAC4AZQB4AGUAOwBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAALQBFAHgAYwBsAHUAcwBpAG8AbgBQAGEAdABoACAAQwA6AFwAVQBzAGUAcgBzAFwAQQBkAG0AaQBuAFwAQQBwAHAARABhAHQAYQBcAFIAbwBhAG0AaQBuAGcAXABHAHgAcwBuAHoAdQBoAGUAdAB3AHcALgBlAHgAZQA7ACAAQQBkAGQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUAByAG8AYwBlAHMAcwAgAEMAOgBcAFUAcwBlAHIAcwBcAEEAZABtAGkAbgBcAEEAcABwAEQAYQB0AGEAXABSAG8AYQBtAGkAbgBnAFwARwB4AHMAbgB6AHUAaABlAHQAdwB3AC4AZQB4AGUA3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2476
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"2⤵
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4600
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3828,i,6510295916244954942,10164894160290787457,262144 --variations-seed-version --mojo-platform-channel-handle=4092 /prefetch:81⤵PID:4344
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82