General
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Target
Client-built.exe
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Size
3.1MB
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MD5
dc5a70257c7c9fa081b965fd3e374e4d
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SHA1
431695b3d0c067911938647db95b6ebe437dc475
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SHA256
966f15e926103d221b54f1a0952ce8249d13b3ee2df1cff051bd8498e8122c88
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SHA512
2ec5fe1c8c053004d32df89659703a538a0c134255bf89e9ac83b59bf62479b21e7f28b5504849df09e2db832bcac557faaec9463b97dc1cc92aaa19a30b94de
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SSDEEP
49152:mvkt62XlaSFNWPjljiFa2RoUYI3QdxNESE1k/iqLoGdNTHHB72eh2NT:mv462XlaSFNWPjljiFXRoUYI3KxUU
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.26.230:4782
8abf5b6b-5423-41c5-b608-867d81b01289
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encryption_key
08843B9267E60170339102520D9ADAD908F901C1
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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
WindowsHealth
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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