General
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Target
Client-built.exe
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Size
3.1MB
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MD5
b382cc9bd6743631d202ee9388196981
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SHA1
ada683921b83da1066f4c20d2b20731d529c873f
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SHA256
5101cb04c38770287a16423f43e9ce5fdd8aa8511f4b0f464df1f3fcc9bb0a80
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SHA512
165f09922121dceffbf6af969038bc6a320a3a7dc7ba95f8369a23a43f905c885942b0ad707c98ade09da9a6ca479e4d3fe1e859bcc8c94c11d95f59bb4a98d1
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SSDEEP
49152:mvht62XlaSFNWPjljiFa2RoUYIFkxT1v1LoGQPTHHB72eh2NT:mvL62XlaSFNWPjljiFXRoUYIFkxH
Malware Config
Extracted
quasar
1.4.1
Test
127.0.0.1:4782
bd6c3b1d-6aa7-4e42-9f88-ac99d54904d9
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encryption_key
63667F73F7CDD8FC0A2474F0D1CB5D2D071D6D70
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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
SystemFile
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 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