Behavioral task
behavioral1
Sample
runtimebroker.exe
Resource
win7-20240903-en
General
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Target
runtimebroker.exe
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Size
3.1MB
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MD5
a29d070abe87b2be24892421e0c763bb
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SHA1
383104c7c6956a98ae5f63c743250f737700f509
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SHA256
00bdef606eb20070701dfc27ed4578c25f5e3357e969ef25ba07ab251450c636
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SHA512
6d2a161e8193ed3e05443bd76652b958990f01d2cc2452185f58a5bff3031d268e2fe71c009fa4938ac1cbc914ba2163133079f8218f1c67b0758f594a67f969
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SSDEEP
49152:Pvht62XlaSFNWPjljiFa2RoUYIygJCKI/nwoGdYTHHB72eh2NT:PvL62XlaSFNWPjljiFXRoUYIygJCi
Malware Config
Extracted
quasar
1.4.1
Office04
interestingsigma.hopto.org:20
11bbf22e-826e-486b-b024-adbd86228a9e
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encryption_key
7A589EDBC6A581E125BF830EF0D05FC74BB75E30
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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
ctfmon
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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 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