General
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Target
Client-built.exe
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Size
3.1MB
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MD5
f4b0be81680b72bae9c31f3225149616
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SHA1
12dca5c6e3c2e7a91ba8e30ec4e56a888d3bfa8e
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SHA256
5900b0e5f972927db833977bee140aa7f10863eeb40c8f7e4742c6c8bd3a3063
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SHA512
1aeb4459bb0d558194033c451f631cfd75c9941a16c33aace8808816e36ddc3322a5e17152629594014d8e9f50b6335edc673dcbc67f3a3a32d272d233107d17
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SSDEEP
49152:3vflL26AaNeWgPhlmVqvMQ7XSKwYEb6LxpeoGddLTHHB72eh2NT:3vtL26AaNeWgPhlmVqkQ7XSKwYEbPN
Malware Config
Extracted
quasar
1.4.1
Client
192.168.2.106:9845
886f65bf-be67-4863-9244-e6f9bebe60cf
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encryption_key
4723FE2DBDCD0127EBB880CBCA3A5D063F882349
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install_name
WindowsUpdateConsole.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
WindowsSystemRun
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subdirectory
SubDir
Signatures
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Quasar family
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Quasar payload 1 IoCs
Processes:
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource Client-built.exe
Files
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Client-built.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