General
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Target
Client-built.exe
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Size
3.1MB
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MD5
4b7c599b895a9fa0dda7e55d9c13376d
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SHA1
4c8b7e05cfe4b53ea335db96931c8031c6ceebdb
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SHA256
a8a97fe89cfb912227c5e40cc288fcd816b52c273d160843db984e9e51bb6667
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SHA512
7fb7c6cb49cbd7fdf4436c74c108d5438c37ddf505252fe9aea18549672a9f48d1987fe9396d1c16b20258ff353805cf96f7aa5b2a0ad2c63b8745e3afcb76e3
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SSDEEP
49152:rvylL26AaNeWgPhlmVqvMQ7XSKJkYC1JrBoGdq/THHB72eh2NT:rvqL26AaNeWgPhlmVqkQ7XSKJkYY
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.100.213:4782
26.129.198.185:4782
cf7698f7-6984-4327-a3ad-0cf3f7a5f85c
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encryption_key
B84D867DF2B37D5B2F9AC9A779D84549AFC6AD79
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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
Processes:
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
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