General
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Target
quasar.exe
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Size
3.1MB
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MD5
8b0270a1fe2e8b6d98bd29ce11d18f9c
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SHA1
a64f7a329f2e741d6ce6a3dd3a66023e4885f8c7
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SHA256
e3c05e377bb3d08792a47d2d04488df5048549e96939a7207c5ef14015d2c329
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SHA512
52e7f3ace9b489729fa8a0434dd362f88e5af8ec34c36b8f40f05fa8fcbc8316ec1e578d8cc6ea2ae9a1e7c7b06ace205f354562988b4428f34066f17589d168
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SSDEEP
49152:Xv9z92YpaQI6oPZlhP3ReybewoMdRJ6XbR3LoGdasTHHB72eh2NT:XvV92YpaQI6oPZlhP3YybewoMdRJ6pK
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.56.1:4782
93.35.198.71:4782
7.tcp.eu.ngrok.io:14313:25565
63eac64e-75b2-49ce-8a2e-3d1114815132
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encryption_key
4C728E4D527117B7094ADC3922AFF7A3BF47EF70
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install_name
WinSysUpdate.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Quasar Client Startup
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subdirectory
WinSysAnalisis
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 quasar.exe
Files
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quasar.exe.exe windows 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: 3KB - Virtual size: 2KB
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