General
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Target
MSOffice.exe
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Size
3.1MB
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MD5
d962a3473bbf13cd28f3d628dda8c054
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SHA1
a5d84db2838faed0bc502cbcaa649af2dab479a5
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SHA256
32f4e97e192a8d521ed9d5c032259ccc7a0ff2544f910b7d7e049ba32698acf0
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SHA512
7f8ba863e77f4eedcd02814fc900fab34bf299ad19cacdddbbef4d8d345e47f8b978984ffbbe1ad21e2b6b4ec99ac154598b976b8d28e2d23eb25cae607c1ba0
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SSDEEP
49152:SviI22SsaNYfdPBldt698dBcjHRa6RBxfnoGdcTHHB72eh2NT:Svv22SsaNYfdPBldt6+dBcjHE6t
Malware Config
Extracted
quasar
1.4.1
Office
82.4.176.218:4782
e08db72a-bc9f-47f8-83ab-d3164532926f
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encryption_key
EBB5DB520CED0DD2E92EEBA7FCF2822D0E934292
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install_name
sys12A.exe
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log_directory
Security SAFX
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reconnect_delay
3000
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startup_key
System Interupts
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subdirectory
SysArm
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 MSOffice.exe
Files
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MSOffice.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