Behavioral task
behavioral1
Sample
pcbooster.exe
Resource
win7-20231215-en
General
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Target
pcbooster.exe
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Size
3.4MB
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MD5
5fae96a9a0f8a934d8fc56ede3b30ad7
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SHA1
e04a96b9de1c31f32ab1f2d32cd0e3f003b6df0a
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SHA256
920ae043ad00115f54ea6d7b8a30b9768d6242c513a408dcbded137d308dd834
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SHA512
95c91d8a12fa319fc5a9476e215192e916b5ebbcaa3c5e835d233f86d613a29ba1a6f38ed7ab834e4ab9b46973509c47c0dc3b1d467f215b4b81be403b1bc0f6
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SSDEEP
49152:GvjI22SsaNYfdPBldt698dBcjHcx4oHrfQvJcZoGd0AzTHHB72eh2NT:Gvc22SsaNYfdPBldt6+dBcjHYXfVEA
Malware Config
Extracted
quasar
1.4.1
pcbooster
pcbooster.hopto.org:4782
187767b0-8705-4028-a3a1-471aa7bda4f5
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encryption_key
64B6EEBB3B20A5053B02DBB9AEC41BF6FA634758
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install_name
manager.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Windows User
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subdirectory
Microsoft Software
Signatures
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Quasar family
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Quasar payload 1 IoCs
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource pcbooster.exe
Files
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pcbooster.exe.exe windows:4 windows x86 arch:x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 3.1MB - Virtual size: 3.1MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 255KB - Virtual size: 255KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 12B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ