General
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Target
Client-built.exe
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Size
3.1MB
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MD5
956bf4b33cb9f9652392ba30be4d8d70
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SHA1
e56884f22c4ca45176cdb01d936fd982b461807a
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SHA256
548088bf8bf48ba7183eb61368fc76fdcbbd6079ca903d72d595a32853121ddd
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SHA512
27b77712d01af6840ed441b1616674155363786f88e4750255eb4e9e735de99c3da1b0b4f4052c6b68c4be712c117314032a760db3f323d0fde6e2acabe308e8
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SSDEEP
49152:nvbI22SsaNYfdPBldt698dBcjHQxiCuBeALoGq2THHB72eh2NT:nvk22SsaNYfdPBldt6+dBcjHbCY
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.81.128:2200
5e22b217-1068-4670-8825-0d956644bffb
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encryption_key
2EEA324C975DB97EE9BDD19003D70E04CD74BAF2
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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 Client Startup
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subdirectory
SubDir
Signatures
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Quasar family
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Quasar payload 1 IoCs
Processes:
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
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_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