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Analysis
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max time kernel
90s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
31/10/2022, 00:10
Static task
static1
Behavioral task
behavioral1
Sample
f2d300d8fb1ef1812db6c63ce75f419e4092742a123bb0ffb7e6c257d53a6b49.exe
Resource
win10v2004-20220901-en
General
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Target
f2d300d8fb1ef1812db6c63ce75f419e4092742a123bb0ffb7e6c257d53a6b49.exe
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Size
390KB
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MD5
2ef5b41a3b40b87a252ad568fe74bb53
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SHA1
57a38efa35497026fa81dec9d0a6e56dd3118fdc
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SHA256
f2d300d8fb1ef1812db6c63ce75f419e4092742a123bb0ffb7e6c257d53a6b49
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SHA512
9dfc0614f3ad919cf279da8f45218b4dee8c17c96089ef36a312f498906b64272f3769127c3540af79ac2349dd5431ff66d370eeb33f006d644694bb8fe4e728
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SSDEEP
6144:ZhvVlLB7RJ2IBsISG7WwEDQrYSZ5QRhv48aqHLrwtc7ITsq:ZhvfN7RgIeIr7W4YEQHQ8aq/l7
Malware Config
Signatures
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Blocklisted process makes network request 1 IoCs
flow pid Process 19 4456 rundll32.exe -
Loads dropped DLL 1 IoCs
pid Process 4456 rundll32.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 6 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\10.0\Outlook\Profiles\Outlook rundll32.exe Key opened \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\11.0\Outlook\Profiles\Outlook rundll32.exe Key opened \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\12.0\Outlook\Profiles\Outlook rundll32.exe Key opened \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook rundll32.exe Key opened \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook rundll32.exe Key opened \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook rundll32.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
pid Process 3752 f2d300d8fb1ef1812db6c63ce75f419e4092742a123bb0ffb7e6c257d53a6b49.exe 3752 f2d300d8fb1ef1812db6c63ce75f419e4092742a123bb0ffb7e6c257d53a6b49.exe 3752 f2d300d8fb1ef1812db6c63ce75f419e4092742a123bb0ffb7e6c257d53a6b49.exe -
Program crash 2 IoCs
pid pid_target Process procid_target 4188 3752 WerFault.exe 76 1536 4456 WerFault.exe 86 -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4456 rundll32.exe 4456 rundll32.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 3752 wrote to memory of 4456 3752 f2d300d8fb1ef1812db6c63ce75f419e4092742a123bb0ffb7e6c257d53a6b49.exe 86 PID 3752 wrote to memory of 4456 3752 f2d300d8fb1ef1812db6c63ce75f419e4092742a123bb0ffb7e6c257d53a6b49.exe 86 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook rundll32.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook rundll32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f2d300d8fb1ef1812db6c63ce75f419e4092742a123bb0ffb7e6c257d53a6b49.exe"C:\Users\Admin\AppData\Local\Temp\f2d300d8fb1ef1812db6c63ce75f419e4092742a123bb0ffb7e6c257d53a6b49.exe"1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of WriteProcessMemory
PID:3752 -
C:\Windows\system32\rundll32.exe"C:\Users\Admin\AppData\Roaming\nsis_unse56c931.dll",PrintUIEntry |5CQkOhiAAAA|1TKr5GsMwYD|67sDqg8OAAl|xYmwxC0TNSO|1k8B3tZkgiyf2sAZQByAG4XAP9sADMAMgAuAOVkHwBs8|AtBUwAS|4fADkAVQBCAFi|AEQAUgB6GQB67wBKAGstAllIg||sKOgEAgAASP+DxCjDzMzMTP+JRCQYSIlUJL8QSIlMJAhZAUj|i0QkMEiJBCT2fQE4SGsACEjHRNskEC0B6w59ARBI14PAAYsBEH0BQEjtOZIAcyWbA4sMJP9IA8hIi8FIi|VMpwFUdwAD0UiLf8qKCYgI68FiBb9lSIsEJWDz8DP|yUiLUBhIO9H|dDZIg8IgSIv|Akg7wnQqZoP|eEgYdRpMi0D|UGZBgzhrdAfuDRFLdQgNEHgQLv90BUiLAOvVSOuLSPkAwWYAQFNV|1ZXQVRBVUFW+0FXWQFmgTlNWv9Ni|hMi|JIi+|ZD4X8NQFjSTz|QYE8CVBFAAD3D4Xq8|BBi4QJ|Yjz8IXASI08AfcPhNZmEYO8CYzuLQEPhMfz8ESLZ|8gRItfHIt3JP9Ei08YTAPhTP8D2UgD8TPJRd+FyQ+EpPPwTYv|xEGLEEUz0kj|A9OKAoTAdB1|QcHKDQ++wPYA7wFEA9C7EXXsQf+B+qr8DXx0Dv+DwQFJg8AEQf87yXNp68aLwf8PtwxORYssi39MA+t0WDPtphDfdFFBixS9ANMz|8mKAkyLwusP28HJxBEDyOEQAUH7igDREO0zwDP2z0E7DLbcEKIAg8b|AYP4CHLu6wr|SIvLQf|VSYnvBPeDxeAQxAQ7728Ycq9iAUFfQf9eQV1BXF9eXX1bLxdIgexgAWAA|4vp6Gb+||9I34XAD4SZcSBMjfqrAYsnEMgz|+ib|nkgjV8ETI1FQv8z0ovL|1QkaH58IEyL4A+EbHEgvUWkEDPAi9ONIEiviXwkIKIgcHwgSJ+L8A+ETHEgoiBQ|0iNVghEjUdA70iNjCSBEUiL2HfofP16II1WSNogtRDeIczz8Ohn6yBEn4sGjVcIPSCiIFhexiGJhCSAgxLd8|B7iw7WIFiJjCRtEewDMI0g6DHrIEyLXXc6i6wpMkiLnBYy|0yJZCQ4RI1n32xJO+xIhiAwTLuJXIABhCTcgxGG6Y7jId8g8KwTSIvTt+jn|AEwipxzMkj7jYRzMkGA8yFJ34vMRDAYoAKD6d8BdfOBvHMyIVL|ZXh1SouEJPTuHjGUJPjz8APCSP876HI1QTvUdv8wRI1JQEkr1KdBuACUAKIgQMYi+Od0F0S0ML4xSI1TfWyNIE0rxOhsgDD3SIvOoiB4SIX|53QUTIwwFzFIjUzvJEC6A|Pw|9dIM4HEcCFdJAAA2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Accesses Microsoft Outlook profiles
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- outlook_office_path
- outlook_win_path
PID:4456 -
C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 4456 -s 5323⤵
- Program crash
PID:1536
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3752 -s 6802⤵
- Program crash
PID:4188
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 3752 -ip 37521⤵PID:1812
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -pss -s 468 -p 4456 -ip 44561⤵PID:1360
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
58KB
MD5664e46926466a2d4c9b87540f4853c39
SHA1b172d1c2bde331770b0a944fcf6a9e2d75ded66b
SHA25692a7c3296a561fb39798f821173e69d1feff44ff3a84caa4c6bb890945e79488
SHA5121490ee65220c71a9f445df4b0f34d0c7bd3ece2e58253cfa3194d34e813843e0f71ea7bce0f0ae562a620334fdf3589262ca2f3209414936aa28a365db64ff03
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Filesize
58KB
MD5664e46926466a2d4c9b87540f4853c39
SHA1b172d1c2bde331770b0a944fcf6a9e2d75ded66b
SHA25692a7c3296a561fb39798f821173e69d1feff44ff3a84caa4c6bb890945e79488
SHA5121490ee65220c71a9f445df4b0f34d0c7bd3ece2e58253cfa3194d34e813843e0f71ea7bce0f0ae562a620334fdf3589262ca2f3209414936aa28a365db64ff03