Analysis
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max time kernel
165s -
max time network
178s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 12:28
Static task
static1
Behavioral task
behavioral1
Sample
sampl request.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
sampl request.exe
Resource
win10v2004-20220414-en
General
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Target
sampl request.exe
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Size
879KB
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MD5
b9f272bf7b71dd282dc1b7f60ce75dfe
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SHA1
a9b1ccf8e78165bd891ef9d78fb9d39946e35901
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SHA256
bec0a2fe9590afbf0a4c5fd15568c59dddd36978769900624c67785e9b0e4363
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SHA512
5b1cdbaa9c8a01b6157d414fed83dc5e19eec225fa2cb911c5dfdcdd245e0bd81ab8d042eb70a96a483a88e053a92c8a2914faf6f5c0b9b2b45f3cc620263083
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Temp\8236ADF044\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 log file 1 IoCs
Detects a log file produced by MassLogger.
Processes:
yara_rule masslogger_log_file -
Modifies visibility of file extensions in Explorer 2 TTPs
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
sampl request.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation sampl request.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 18 IoCs
Processes:
sampl request.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 sampl request.exe Key queried \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook sampl request.exe Key queried \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 sampl request.exe Key queried \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 sampl request.exe Key created \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 sampl request.exe Key created \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 sampl request.exe Key queried \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook sampl request.exe Key created \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 sampl request.exe Key created \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 sampl request.exe Key queried \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 sampl request.exe Key opened \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 sampl request.exe Key created \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook sampl request.exe Key created \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 sampl request.exe Key opened \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 sampl request.exe Key opened \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 sampl request.exe Key created \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook sampl request.exe Key queried \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook sampl request.exe Key created \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook sampl request.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 30 api.ipify.org -
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: AddClipboardFormatListener 1 IoCs
Processes:
sampl request.exepid process 1816 sampl request.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
sampl request.exepid process 1816 sampl request.exe 1816 sampl request.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
sampl request.exedescription pid process Token: SeDebugPrivilege 1816 sampl request.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
sampl request.exepid process 1816 sampl request.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
sampl request.exedescription pid process target process PID 1816 wrote to memory of 4772 1816 sampl request.exe schtasks.exe PID 1816 wrote to memory of 4772 1816 sampl request.exe schtasks.exe PID 1816 wrote to memory of 4772 1816 sampl request.exe schtasks.exe -
outlook_office_path 1 IoCs
Processes:
sampl request.exedescription ioc process Key queried \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 sampl request.exe -
outlook_win_path 1 IoCs
Processes:
sampl request.exedescription ioc process Key queried \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 sampl request.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\sampl request.exe"C:\Users\Admin\AppData\Local\Temp\sampl request.exe"1⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DAkYduing" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7D4E.tmp"2⤵
- Creates scheduled task(s)
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp7D4E.tmpFilesize
1KB
MD52384b7c6aab5267c8ff17c4d89ce8407
SHA1ff850654dd1029e613993a2d95c09daca36fcf61
SHA256c1ea2f60ec699b2d1f91f755e660fd261aca6bbac206ca5c91213540bd788696
SHA512abdd10304afe160fc0ab08242316c5696e8c83926f0d2504767762338212a78ed1af99654c18630cf563526bd1379e7c479be385994d8a79e7ceb74fb9c19971
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memory/1816-131-0x0000000000D20000-0x0000000000E02000-memory.dmpFilesize
904KB
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memory/1816-132-0x00000000081B0000-0x0000000008754000-memory.dmpFilesize
5.6MB
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memory/1816-133-0x0000000007CA0000-0x0000000007D32000-memory.dmpFilesize
584KB
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memory/1816-134-0x0000000008D90000-0x0000000008E2C000-memory.dmpFilesize
624KB
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memory/1816-137-0x0000000008B30000-0x0000000008B96000-memory.dmpFilesize
408KB
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memory/1816-138-0x000000000A350000-0x000000000A35A000-memory.dmpFilesize
40KB
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memory/1816-139-0x000000000B170000-0x000000000B1C0000-memory.dmpFilesize
320KB
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memory/4772-135-0x0000000000000000-mapping.dmp