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General
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Target
Client-built.exe
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Size
3.1MB
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MD5
71237ace600401ba52dfea1b658e9edf
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SHA1
b437fd48edf8700d0d873f8670c93ec787562d1c
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SHA256
cc92d78ae16a55b1f74cf051ae5098e5cee90949202ebf2272573c1cd9e915bf
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SHA512
7b560206139607b7f901c5b2126ca0d0e232e32a22b995c79a1df8a645a8ebf3f33e83136a563073b4606b76a80f4e2ba7b4edd41d3353e694120385d72d0efe
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SSDEEP
49152:DvnI22SsaNYfdPBldt698dBcjH0WrWqbartOoGdYTHHB72eh2NT:DvI22SsaNYfdPBldt6+dBcjHdiqb
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.178.56:4782
0552115c-2459-453f-980d-c60aebb9957e
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encryption_key
1DEED326568BA39A5A6D6473414A146E2A7F5724
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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