General
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Target
Client-built.exe
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Size
3.1MB
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MD5
caf5dead17145386269ae8b5d3003443
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SHA1
f8391c3484f228f7ec2dfa4058aef05e26e4b54e
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SHA256
4950eae245a264978ae47609ceab1373a6ae422dcb1b394e6760c4a2c55ef64b
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SHA512
cbbb580d7ea9dc372c541b8768f8975f9b5c971eeecd98830f74b905c9abfd90552bedb2e11f3b3068233989a1717dac4a87c5291c957a58458b35d3643bde4b
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SSDEEP
49152:mvEt62XlaSFNWPjljiFa2RoUYIkCH1JMLoGdjTHHB72eh2NT:mvY62XlaSFNWPjljiFXRoUYIkCK
Malware Config
Extracted
quasar
1.4.1
Office04
10.0.2.15:4782
a9c99f43-f3a5-48e9-8571-13fe9681f6a3
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encryption_key
A925763DFC4341C00AED353212B5C1AE07840A6A
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install_name
Client.exe
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log_directory
Logs
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reconnect_delay
1000
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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