General
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Target
Client-built.exe
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Size
3.1MB
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MD5
1fc150ca8d96e8cfccdbcc73dcc91f1e
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SHA1
84a7512da60a13ffa44ece35a882a124abe15b38
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SHA256
3963fc0a539aff38363c40398e825669c36293b20ecac08baa05bcf69b7f785f
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SHA512
2ff46cd3ea3724c3fa32891ffa391cc10d11f7157d003f8cde97597071508b1d4de33fd9014582120ad12a11c72bdb553c39fbbabe251bf85843ba8a309f90bb
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SSDEEP
49152:HvyI22SsaNYfdPBldt698dBcjHWARJ6FbR3LoGduyTHHB72eh2NT:Hvf22SsaNYfdPBldt6+dBcjHWARJ6X
Malware Config
Extracted
quasar
1.4.1
Office04
98.218.3.74:4782
3808ff71-c2df-4538-8d66-6459677347c3
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encryption_key
24BCF759F51AE66E5C4BF0A521BA79747D6F977F
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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 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