General
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Target
Client-built.exe
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Size
3.1MB
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MD5
8b69f38fbe039877a0468cab8a53eced
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SHA1
44905cc9d4be84171ef26dce302c1b7d02b83f35
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SHA256
f62fafcc66422f441f4c34706f0b0e0a5acc1c01d8ee313a6663b9e4a927706e
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SHA512
9b3e3b15e9e1fac7131cdbdc81ac2bae52dece5202d853d0e9b1c51129b31a08de9f6e4cc994dcda2fe2f5f69477459fc73eb3b3a720846abc6c8e71218011cd
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SSDEEP
49152:3veI22SsaNYfdPBldt698dBcjHR10GbRSLoGdvITHHB72eh2NT:3vT22SsaNYfdPBldt6+dBcjHR10L
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.100.213:4782
cf7698f7-6984-4327-a3ad-0cf3f7a5f85c
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encryption_key
B84D867DF2B37D5B2F9AC9A779D84549AFC6AD79
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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