General
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Target
Client-built.exe
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Size
3.1MB
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MD5
273f9c44dded57447cf91a3310159af6
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SHA1
439c1158fdd311dc4a5b688cff83bfa9a285a862
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SHA256
0bde72f7fac05fa3604180b474d3690c73e792274f9c56d967e47345eef17c3b
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SHA512
37659fa009e1dc208699f92db4283bfc1175bfee2ab9a8442f572a47ee87625992370d943d2b7fbce479a3790a6f541c7093ec6c25b3f3e35ad927386e80b4c1
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SSDEEP
49152:CvbI22SsaNYfdPBldt698dBcjHXs/6VoJdvIM9sTHHB72eh2NT:Cvk22SsaNYfdPBldt6+dBcjHXs/4DM
Malware Config
Extracted
quasar
1.4.1
Office04
37.216.22.195:8888
331c4a74-ae06-4cbd-b2f0-d55ca25c7830
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encryption_key
E25714CA4A028950408436B93E869C1C1E0812ED
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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 Client-built.exe
Files
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Client-built.exe.exe windows:4 windows 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