General
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Target
hello.exe
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Size
3.1MB
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MD5
5ea0b798b2a63a8cc91ad44b17a0fe91
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SHA1
8eb91782057dc16a4006d70314db6613b3a5d04e
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SHA256
3b39f69d0f4a6940599449eb78a958207e36ede726fc6d4c158cdf321b68523b
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SHA512
0086a59004d47d78152c3672a655e95aca238c8960551416aee262d373009fc4ecf15f94b254887fc93951650fd463dd61094d18a1ba245945ef1f9239253122
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SSDEEP
49152:OvbI22SsaNYfdPBldt698dBcjHo94n4Zjhm7oGdZTHHB72eh2NT:Ovk22SsaNYfdPBldt6+dBcjHo94n4I
Malware Config
Extracted
quasar
1.4.1
Office04
79.185.109.198:4782
53790885-f84e-49fe-b0f5-533bcec24786
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encryption_key
3428C8CDB24FFC56DF6BBDDEC9905C3058F7B092
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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 hello.exe
Files
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hello.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