Analysis
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max time kernel
42s -
max time network
80s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
21-05-2022 02:07
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20220414-en
General
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Target
file.exe
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Size
460KB
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MD5
7753b2e80f90c21024a33e9d6dd8804c
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SHA1
3760b58f20b36c1945475458a0425de2edf682db
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SHA256
a314527c483746231794e1c087529350230c74562a776f78319086f92e164418
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SHA512
75e9f6d6e0456d6cf724a9c02d09aa9a6d6df7a478382051c57d39cbbc53af883b72fc44cdafda724fddb868ce01fee93e887afb99e319eaf21fafd53ac55733
Malware Config
Signatures
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Looks for VirtualBox Guest Additions in registry 2 TTPs
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ReZer0 packer 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
Processes:
resource yara_rule behavioral1/memory/1644-57-0x0000000000720000-0x0000000000760000-memory.dmp rezer0 -
Looks for VMWare Tools registry key 2 TTPs
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Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
file.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion file.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion file.exe -
Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
file.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum file.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 file.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 1384 1644 WerFault.exe file.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
file.exedescription pid process Token: SeDebugPrivilege 1644 file.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
file.exedescription pid process target process PID 1644 wrote to memory of 1384 1644 file.exe WerFault.exe PID 1644 wrote to memory of 1384 1644 file.exe WerFault.exe PID 1644 wrote to memory of 1384 1644 file.exe WerFault.exe PID 1644 wrote to memory of 1384 1644 file.exe WerFault.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1644 -s 9082⤵
- Program crash
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/1384-58-0x0000000000000000-mapping.dmp
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memory/1644-54-0x0000000000900000-0x000000000097A000-memory.dmpFilesize
488KB
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memory/1644-55-0x0000000075841000-0x0000000075843000-memory.dmpFilesize
8KB
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memory/1644-56-0x0000000000380000-0x0000000000388000-memory.dmpFilesize
32KB
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memory/1644-57-0x0000000000720000-0x0000000000760000-memory.dmpFilesize
256KB