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General
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Target
WindowsDefender.exe
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Size
3.3MB
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MD5
1448aa339fc327144c92d9ab75f67dc0
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SHA1
59a0f2ae25765dd3201b34967807ef3512b8dd96
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SHA256
a1c8c48ee50425a76c78a1fc0dce9ca76f3ac4ea36e5a7f8ec553e5a348f88a0
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SHA512
918c0bbb6c0359d3c180a5dcee661d18ebf909d7d65e6795d55c7abbdcade5cb10f3d39d709195b345324656bcc7d1952852203e35db577cd8ff55df19d33775
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SSDEEP
49152:WvDhBYjCO4Dt2d5aKCuVPzlEmVQL0wvwkaxxOEMkxk/JxCoGdWKTHHB72eh2NT:Wvbt2d5aKCuVPzlEmVQ0wvwfxxcwG
Malware Config
Extracted
quasar
1.4.1
Office04
general-later.gl.at.ply.gg:6227
e8e985a7-62a2-410d-91ea-7249972738eb
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encryption_key
578EFB451288E8CFFF8CB67C63A1530F061DDBCD
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install_name
WindowsDefender.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Windows.Defender.exe
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subdirectory
SubDir
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 WindowsDefender.exe
Files
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WindowsDefender.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: 169KB - Virtual size: 169KB
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