General
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Target
aa.exe
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Size
3.1MB
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MD5
a1b18584a5906f5be41db7dd83325caa
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SHA1
749e349a70fb0a2778900fceb15ff7f3ed033196
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SHA256
ef2c6cf5a0ba1b81ab22164b7820f49761de4f6feb8fa4e5c64a1bfad369cc74
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SHA512
037e7b94ccea547a113304aa73fb940401c18a8e1d3df5681a191b0f9292769419f48bf8fe1f6f69534f320f34fabac638735d2e3ea2ff12039518193dca4ede
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SSDEEP
49152:Wv7I22SsaNYfdPBldt698dBcjHqHfkfXvjjLoGlvTHHB72eh2NT:WvE22SsaNYfdPBldt6+dBcjHLfj
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.254.152:4782
180.190.63.111:8080
37c3d2aa-6a36-4ee8-a4be-f1c3187fbd03
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encryption_key
E9EE5B51F341491A9CE8837BE89BB18191B86C1E
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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
python
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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 aa.exe
Files
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aa.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