Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240729-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
b45a77a2cdaca1dbaf0ebeec34178a95
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SHA1
4b43a29635df7b060ec3c7696c45446bf37c8150
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SHA256
76ba8ec8222df3a96263d57d284c0acd8f62a604e2a46e86e8a5b46d6018607c
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SHA512
cdfbe90b1ad02b69a5bfcb577d1cd8c12d055df2e370716d0faccf65364edecf5c8103f55355daa11a8d845a24d453b78c6e49f06242043ffa1a0a9d8e7d052d
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SSDEEP
49152:Dv+lL26AaNeWgPhlmVqvMQ7XSKeCxNESErk/i8LoGdlETHHB72eh2NT:DvuL26AaNeWgPhlmVqkQ7XSKrxaC
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.1.28:4782
180b92ba-98f1-484b-b54f-264758c8d7f4
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encryption_key
E2AD968D101B25448614267CCA174D53CE1050BA
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install_name
BootstrapperV1.11.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
BootstrapperV1.11
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subdirectory
SubDir
Signatures
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Quasar family
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Quasar payload 1 IoCs
Processes:
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
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