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
b77d847b1d41cde07f81168c7addbb10
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SHA1
2d5c614efdef7ab59fa5fb665d6ed1a79502b97f
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SHA256
492a651e5ae2020b3b7fd51861adf68402089d050e083c3a9ef1a9866256000c
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SHA512
6fff7c253c543e370dcb459f0cc66003f57fbc35f40af5744deca97a2c593bf0881f96c845bbc15963e9eb81a652aec78a500ea41f2d1af5fbb5f0ec04c6c9f6
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SSDEEP
49152:nvelL26AaNeWgPhlmVqvMQ7XSKqaRJ61bR3LoGdEjTHHB72eh2NT:nvOL26AaNeWgPhlmVqkQ7XSKqaRJ6H
Malware Config
Extracted
quasar
1.4.1
RuntimeBroker
siembonik-44853.portmap.host:44853
df483a08-855b-4bf5-bdcb-174788919889
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encryption_key
A8573AD4438B1D5F6207F7C03CCC7F1E2D4B13DF
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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
am1
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