Behavioral task
behavioral1
Sample
RuntimeBroker.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
RuntimeBroker.exe
Resource
win10v2004-20241007-en
General
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Target
RuntimeBroker.exe
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Size
3.1MB
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MD5
82761cf21801c5a88775b5b82bce7dcd
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SHA1
8e4bb300478b689915d241a18b8a9da5ba21b2b9
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SHA256
e170577ede5b14116b8e2b3f4ccfa7865927aac68613cfd2676eef4f43819ddf
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SHA512
2c45966635f2cc9bc53af8bb9070c4bd3f7d403f81fc40f58c0a0f2b04bfcd0a150092ae7a78971a9596ae0499cff98df0748eae8caacfabdfd522141b967425
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SSDEEP
98304:bvNL26AaNeWgPhlmVqkQ7XSK46lRJ6jzr:Tb4SY2
Malware Config
Extracted
quasar
1.4.1
RuntimeBroker
dovefey735-52034.portmap.host:52034
c1457435-328d-4da4-8379-23c8e51865c6
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encryption_key
BEDD596FBA59B01D6913DA83A0452739FD858DE1
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install_name
RuntimeBroker.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
RuntimeBroker
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subdirectory
a7
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 RuntimeBroker.exe
Files
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RuntimeBroker.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