General
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Target
Client-built.exe
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Size
3.4MB
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MD5
92ef6e944f11d3582ef138ffd0cd5b37
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SHA1
3e94571815b703aec95efd4bf9e88085f4d12abd
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SHA256
6f123aca70739fbbe50ebadddf7fa7a5d43c660997d99089d8934e20a10c89eb
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SHA512
70ce8a7f79af32c64a4519b75e5e4de00f960b1f7188c4a54a6c4305f999cd8dc4ffe4eb61dd6f430362bd97d7b5c348d20a2980cd9be8c75922599ccff33382
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SSDEEP
98304:DvuL26AaNeWgPhlmVqkQ7XSKEQQupn5RpW34fW+BxKSWv:ru4S+Q+0I3BYX
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.56.1:4782
192.168.1.93:4782
e9b5a8e3-2ffb-4d65-856a-8802f3e906e2
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encryption_key
171BABC024DB8B81031E32E5C02FCD5588448502
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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
Password: afe43
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: 267KB - Virtual size: 266KB
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