General
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Target
Office16.exe
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Size
3.1MB
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MD5
3cd7c025949f441394b1ad89d3896387
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SHA1
ffb9cb3e7059082e96988295274fa7a5b6eff15b
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SHA256
b67eab6b528f625eaeb6f24c4b255f5fc608f2fd030887837b919f63062e173e
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SHA512
46450a37d37583f9fa718bc85987edf7d8f8bd269e8f4f7737d2584a784033fa4600b55e3e789e803b30facda8261c36327e1b007c8cbf933a4e7f38df2848c4
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SSDEEP
49152:UvHlL26AaNeWgPhlmVqvMQ7XSKp0RJ6cbR3LoGdGTHHB72eh2NT:UvFL26AaNeWgPhlmVqkQ7XSKp0RJ6m
Malware Config
Extracted
quasar
1.4.1
Office04
loletScript-55049.portmap.host:55049
83ccefa2-233e-4371-bd98-f84307d3d975
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encryption_key
237F842816ACAEB97B9536F65F6A1A362E20E605
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install_name
Sirhurt.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 Office16.exe
Files
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Office16.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: 29KB - Virtual size: 28KB
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