General
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Target
RichExecutor.exe
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Size
3.2MB
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MD5
3e259987fd830f752a6ca1b303eaab66
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SHA1
c49cb58d9c40654fd6bc1e334edc413796242fb3
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SHA256
76914f3b3fe9bd7f1b26246c82b84d20154d31708a3c79b0119c001d54003642
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SHA512
589d35702cfa51afb53539b44d4e2aed4aa3f6a66f533af63fd2f5b141ecbba0c75512fd7c09555aa42a05d453c8315ee29c47b18246953293c7789d18fc7794
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SSDEEP
49152:DvqlL26AaNeWgPhlmVqvMQ7XSK1r6kBxfMoGdSPTHHB72eh2NT:DvSL26AaNeWgPhlmVqkQ7XSK16fC
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.1.212:4782
5c88d3df-67a5-43bd-aea9-9582dd701a3d
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encryption_key
261C8D2C07C00AB3DF0B1ABF37A28F8A97554D73
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install_name
RIchExecutor.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 RichExecutor.exe
Files
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RichExecutor.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: 57KB - Virtual size: 57KB
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