General
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Target
AimStar.Exe
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Size
3.2MB
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MD5
34d6020f06919259e84e0b072e92f3f0
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SHA1
9936e39d8e0175171fdc8a2d2306ed0339e5509b
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SHA256
ce2f7f25b02ba2ec74cdd197b43d2092f65afbc45bff0cf182d8cc990db38353
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SHA512
28f2662ee3f2df4017e4abc7868bf928cd1c47243b8ab0f799d2e12a5e87a9f849f7b686a9d3ef3d259da259da8a75648a9d51e3ce774bb77cb66bdb9f588508
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SSDEEP
49152:NvXI22SsaNYfdPBldt698dBcjHxkxNESEtk/iNLoGdxITHHB72eh2NTu:NvY22SsaNYfdPBldt6+dBcjHOxgFK
Malware Config
Extracted
quasar
1.4.1
AimStar
192.168.213.173:4782
a4442fa9-47e3-4cba-8113-28e413cbe49a
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encryption_key
FA7D47CCD0B133B746F884F4AAB2C5963E40A167
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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 Security
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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 AimStar.Exe
Files
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AimStar.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: 56KB - Virtual size: 55KB
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