General
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Target
Client-built.exe
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Size
3.1MB
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MD5
ddb9be2280da0aa84032337e4005227b
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SHA1
b8ccd5083c07b07da088b5054ec5ea11d40b1b47
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SHA256
a41c08b7b8320f0b124f0d4485ad82865aeb167b5f4a169fa6eec4c6fcd5fe6a
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SHA512
1f334849f9749373bf9c613b89065e9737fd1be71f079977a07abc34a5ce0e90c21d41f391882d5107f6570ccbce7c33dc14be777d37a910d27bf7758be0f1c9
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SSDEEP
49152:DvDI22SsaNYfdPBldt698dBcjHZvpLbR5xLoGdbTHHB72eh2NT:Dv822SsaNYfdPBldt6+dBcjHZvpTB
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.56.1:4782
aefdb81a-dcd3-4fd0-b102-f376a4417273
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encryption_key
5D054695799BF01C75E09A3F46A1A4F139A4F864
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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