General
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Target
Client-built.exe
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Size
3.1MB
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MD5
0668c6f48996ea2227015977a6900bd1
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SHA1
9997d8dae20290055d755bc31f38a0dee0850ebe
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SHA256
ed54298bee516ba060f017e598e3ec93861bc85faf83e28af1298a6489345dcf
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SHA512
496cbce3d5cb45e59d4941f3d29528d52c0d246af9b086e40cfa88d7fdcaefca9ca41bab57b25d503a38782d04e28eb66ada4b9aee3b0a42c69c24f18fd70e20
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SSDEEP
49152:mvnI22SsaNYfdPBldt698dBcjHWKRJ6JbR3LoGdETHHB72eh2NT:mvI22SsaNYfdPBldt6+dBcjHWKRJ6L
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.1.92:4782
c952cb01-1f3f-40b6-8ddb-07cb976fd795
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encryption_key
F88FF8E3CD95445B1DA47F33DF3FD6B69DD8BD77
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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
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_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