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Analysis
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max time kernel
60s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
21/05/2022, 11:55
Static task
static1
Behavioral task
behavioral1
Sample
Payment AF 6252020_PDF.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
Payment AF 6252020_PDF.exe
Resource
win10v2004-20220414-en
General
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Target
Payment AF 6252020_PDF.exe
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Size
901KB
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MD5
462d64b8cccac090d2d32c835ce36f32
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SHA1
54b3ecf7515d602cf00ad219594e071bb874cc92
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SHA256
be5e5be8981ef261f24b21b1d6b67f5041d10ecc3eb3697a67142d43e71c7ece
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SHA512
cf53f6df2b445b1eb0b3b0309a5b5cd1a37f5e90135a161cbeb80eb662b6d95104d9083e62c4145203277b4fcfe45607fc07a7f80bc4fdced6c44f10cb751c43
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Temp\79FE0CC911\Log.txt
masslogger
Signatures
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MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
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MassLogger Main Payload 6 IoCs
resource yara_rule behavioral1/memory/2024-61-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2024-62-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2024-63-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2024-66-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2024-64-0x00000000004A2E6E-mapping.dmp family_masslogger behavioral1/memory/2024-68-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger -
MassLogger log file 1 IoCs
Detects a log file produced by MassLogger.
yara_rule masslogger_log_file -
ReZer0 packer 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
resource yara_rule behavioral1/memory/1564-57-0x0000000005290000-0x000000000533E000-memory.dmp rezer0 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation Payment AF 6252020_PDF.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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Accesses Microsoft Outlook profiles 1 TTPs 15 IoCs
description ioc Process Key queried \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Payment AF 6252020_PDF.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook Payment AF 6252020_PDF.exe Key queried \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook Payment AF 6252020_PDF.exe Key queried \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Payment AF 6252020_PDF.exe Key queried \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook Payment AF 6252020_PDF.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Payment AF 6252020_PDF.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook Payment AF 6252020_PDF.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook Payment AF 6252020_PDF.exe Key queried \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Payment AF 6252020_PDF.exe Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Payment AF 6252020_PDF.exe Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Payment AF 6252020_PDF.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Payment AF 6252020_PDF.exe Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Payment AF 6252020_PDF.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Payment AF 6252020_PDF.exe Key queried \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook Payment AF 6252020_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.
flow ioc 4 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1564 set thread context of 2024 1564 Payment AF 6252020_PDF.exe 27 -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2024 Payment AF 6252020_PDF.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2024 Payment AF 6252020_PDF.exe 2024 Payment AF 6252020_PDF.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2024 Payment AF 6252020_PDF.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2024 Payment AF 6252020_PDF.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 1564 wrote to memory of 2024 1564 Payment AF 6252020_PDF.exe 27 PID 1564 wrote to memory of 2024 1564 Payment AF 6252020_PDF.exe 27 PID 1564 wrote to memory of 2024 1564 Payment AF 6252020_PDF.exe 27 PID 1564 wrote to memory of 2024 1564 Payment AF 6252020_PDF.exe 27 PID 1564 wrote to memory of 2024 1564 Payment AF 6252020_PDF.exe 27 PID 1564 wrote to memory of 2024 1564 Payment AF 6252020_PDF.exe 27 PID 1564 wrote to memory of 2024 1564 Payment AF 6252020_PDF.exe 27 PID 1564 wrote to memory of 2024 1564 Payment AF 6252020_PDF.exe 27 PID 1564 wrote to memory of 2024 1564 Payment AF 6252020_PDF.exe 27 -
outlook_office_path 1 IoCs
description ioc Process Key queried \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Payment AF 6252020_PDF.exe -
outlook_win_path 1 IoCs
description ioc Process Key queried \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Payment AF 6252020_PDF.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Payment AF 6252020_PDF.exe"C:\Users\Admin\AppData\Local\Temp\Payment AF 6252020_PDF.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1564 -
C:\Users\Admin\AppData\Local\Temp\Payment AF 6252020_PDF.exe"{path}"2⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:2024
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