General
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Target
Client-built.exe
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Size
502KB
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MD5
4b84ba6fb64643df80a50b4351368a7c
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SHA1
0c45bb4d28399f09e5a92c341f544e7141e371e0
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SHA256
c976e871fc4a85df9b709fde9715ac426fb6796e1a4e097230799a1381f9247c
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SHA512
6b1207eb35f55b903f59f966ebda8e1a0dfbd552a24a9d999bdfe520f1d40a48ba74574274d1ab526708708635a20f0babadc2f1c9006772be4e947d1703f197
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SSDEEP
6144:VTEgdc0YmX7IxUpGREW7dBdTED8KdDkQfocEBOb8F9r8Hc1ecTR32:VTEgdfYnxUJJDkRpBPecd2
Malware Config
Extracted
quasar
1.4.0
Office04
147.185.221.19:6401
0623266f-d360-4056-9f63-ed81b7a11fdf
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encryption_key
CAC47E124130EBD3A11EBA5B8DAA79439482A0B5
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install_name
Roblox.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
123
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subdirectory
Roblox
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: 498KB - Virtual size: 497KB
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