Behavioral task
behavioral1
Sample
cmd.exe
Resource
win7-20240729-en
General
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Target
cmd.exe
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Size
3.1MB
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MD5
ca283d3c1cccde01d5fca1e37c3fddb6
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SHA1
bc9c7bdb87936f580871374b60ccb9392770594d
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SHA256
378d287411180c7a4a675116862bd810b8250a7c11a3c5fd04b04ef59e0e4cf8
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SHA512
31a49241bb2aa3b024e9f9076a4b6f0e275f92128f7e5d9e317c377a8783fbfceb1c06a8e658e3c25e9deb680fa4fdfa83120630e1abb5d3079b72ac4ba58413
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SSDEEP
49152:3vTlL26AaNeWgPhlmVqvMQ7XSK2uRJ6FbR3LoGdPTHHB72eh2NT:3vJL26AaNeWgPhlmVqkQ7XSK2uRJ6X
Malware Config
Extracted
quasar
1.4.1
Office04
10.109.9.184:4782
10.109.9.35:4782
1916cb83-b99a-4ecb-a054-4e009de2edc6
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encryption_key
CE28057C20C1DED27F22AD4254F5C2C5464D46B3
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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
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 cmd.exe
Files
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cmd.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