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General
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Target
Client-built.exe
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Size
3.1MB
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MD5
3436704fcaa032675bc4b8f1768f8ce2
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SHA1
f7c0bcd46e674c467402fc0b9019b0e25e7ca547
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SHA256
5f2520633846371a2777aeba2c39b8b22ba5f572d091dc9ad3aaa6a9da4c56c4
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SHA512
4476ff2394193be61a2287cb8a3c20597a88b8028361c4b216b24a121a99939f9a5a3b0a2d77cf4f1fb3c6c9977de8e1f0b930e30f6abf6ccf75d3e3de71d366
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SSDEEP
49152:DvXI22SsaNYfdPBldt698dBcjHou501vHLoDdftTHHB72eh2NT:DvY22SsaNYfdPBldt6+dBcjHou5K
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.0.24:4782
8778106a-0eb2-4d35-9617-d68276872dc3
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encryption_key
6705C9378B815AFF21AE90A8CD796479C7CB6028
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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
Windows Shell Experience
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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