General
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Target
Client-built.exe
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Size
875KB
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MD5
8c2785d34b3a6e6fbce972117228a9b4
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SHA1
673b9eb1f253903c45834dcba09afcef718599e4
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SHA256
6a960757025813729fa37ab51a6a7db9c8439d429e078f79717008fc2796b141
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SHA512
c2f184d9a265425b190bc3a900083112a46436bc09907ded7baeaa83c9202f66e73bf036dc2738eac35ca41d049d80f77daf3519e9fe23ed2754264314f2497a
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SSDEEP
24576:EGcC7Tt+PSWHIPbcNK0KKfaOwI55l2Sszls1j5:XcC7TmEgKKHwCBsza
Malware Config
Extracted
quasar
1.5.0
Office04
Javv-46764.portmap.host:46764
c236c7b5-e333-43a3-a991-954c61518c46
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encryption_key
F5F31C46BB15BEDDB643667BC441A55E746DE4B8
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install_name
Client.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Quasar Modded Client Startup
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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 Client-built.exe
Files
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Client-built.exe.exe windows:4 windows x86 arch:x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
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_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 871KB - Virtual size: 870KB
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