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General
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Target
Update.exe
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Size
413KB
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MD5
d0564fc7770410d9c9efddfe4318fe40
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SHA1
70e9c65c95ef79a8fb412d4b5baa747be19f358f
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SHA256
926ca6246cafb2f73a2a44325a1c2c9a5e136f109cf5fc1beecfe2611adc95e8
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SHA512
0dbad5c423b060dc3122c8b1d351e6fd519526de74ff01c17997e05ec88b91cb2c9e9267ed406f0f652cd82c788318ca671e7bf6fc6b4b810f780a04521bc37d
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SSDEEP
12288:t1TVVfbfGyO2NHb64vVEWiFjwqLlShatH1GK:9NeyO2NHb64vVEZjbLlS0D
Malware Config
Extracted
quasar
3.1.5
Office04
217.254.98.158:4782
$Sxr-0AJKEcQg2SeZyXPT01
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encryption_key
YCpmQrQIUT3FKePhT9Ax
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install_name
rat_client.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
SeroXen 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 Update.exe
Files
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Update.exe.exe windows:4 windows x86 arch:x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
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: 409KB - Virtual size: 409KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 2KB - 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