General
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Target
Client-built.exe
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Size
3.1MB
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MD5
147e42e7769c05ba777c4e80bbe31424
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SHA1
170757cbabc7a082b6c014c543a72d5ae0743bf6
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SHA256
478f33c02c47611c02cde31796a1b424767d91d068b4cf8b61921f63a0d2922c
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SHA512
6593045da84de018fa2575771520936aadac7526f0b0d492e9e4f93e07281390eac8c4bd59b03b6bdbfff95bb1ad6a659a146136c2478b2a572ca81cde331bd5
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SSDEEP
49152:KvTI22SsaNYfdPBldt698dBcjHX8zmoGdZCTHHB72eh2NT:Kvs22SsaNYfdPBldt6+dBcjHX8q
Malware Config
Extracted
quasar
1.4.1
Office04
128973e6as8d.hopto.org:4782
d1668909-ba2b-415e-9c5e-76baaf1a9e83
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encryption_key
DD486A5776EEE0C1CA18FA5BADCEE991151ED181
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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