General
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Target
ClientX.exe
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Size
3.4MB
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MD5
8142104d55fc9ffeb5e79b5639ac2f2b
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SHA1
2e9c324236f682ad4dbe7b5ee967676a2f40635c
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SHA256
d26249928948f80fb0d520d8515473e343eec4bec3e45a5dfd2f3db7e518ffd2
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SHA512
33142888451fa4f1fd0967da541683c63d75adb74a9839f08d1d2540c6db3d3e38a05edb58745240c9c7868ffa8405bf8f975b7d94be52cccc4b3c17e06bbd0c
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SSDEEP
49152:LvPlL26AaNeWgPhlmVqvMQ7XSKK+xNESEok/ilLoGdUeTHHB72eh2NT:LvdL26AaNeWgPhlmVqkQ7XSKHxf9
Malware Config
Extracted
quasar
1.4.1
ClientX
o0p2e195m0-34052.portmap.host:34052
b0299f3a-cce4-49aa-845a-55429d915187
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encryption_key
CFE2CEC16AA74627FAD2363341BA64A4E9D48B7B
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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
Client
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 ClientX.exe
Files
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ClientX.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: 267KB - Virtual size: 266KB
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