General
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Target
Client-built.exe
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Size
3.1MB
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MD5
b716ab719873217e4d3f85d454577a03
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SHA1
af59131607bfeb77602000e46ec163cb65a325e8
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SHA256
5f874bd4798246dccd821a4a3f8dd4e3e3c50d520800836c8dd5104353e60d48
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SHA512
cf7bb84d521737a734241e6621e36b7475018c6da07ef92aeb8eb75f9fab399d10fc04d84b7f8cb8283d2d4aae405c71f448d03bb3c858864505e8f58e2fe970
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SSDEEP
49152:uvmI22SsaNYfdPBldt698dBcjHOCHYmzfqoGdOTHHB72eh2NT:uvr22SsaNYfdPBldt6+dBcjHOCHw
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.1.31:4782
192.168.1.31:80
e18445cb-5308-47c6-b465-eb872a625887
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encryption_key
68C4F9407798BEF02DB63AC6B0C80ACB1B3451E8
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install_name
insomnia.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
insomnia driver
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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