Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20231129-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
34b6298d9defd63572face0b98890878
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SHA1
805169e5782b01b2681eb43de1900063fe06e590
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SHA256
aac3318a190c7dc53512c3b492cd1cd6849b5095fb1f112ba296f9c079194340
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SHA512
4aeed4a6c14f1ecc739eb70512f435f1c4ee9c9e1de936c6e6817e9c5281aec486c35eb71ad70d68b03a4c8e813706395c80250c5e4880e9dacba15065a9dd79
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SSDEEP
49152:uvbI22SsaNYfdPBldt698dBcjHUQxNESEpk/iKLoGdfTHHB72eh2NT:uvk22SsaNYfdPBldt6+dBcjH/xg0
Malware Config
Extracted
quasar
1.4.1
Office04
91.92.242.148:4782
19d192fd-6b6a-462a-816d-c6a2102fb462
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encryption_key
5E1B833088E17261392F4E2B5745DF67141AEEA1
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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 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