Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20241010-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
bee705cc59266d8ab855c591599b0f09
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SHA1
cb2ab1afc9bee0d41786559505abb7220b7f83c8
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SHA256
28a1b5a0e4840bd853d1a9e8f4a48f36af3fd4f38c5cb8273a5fb3df67afcb04
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SHA512
6971cb2c3ee9efad0e14b162a074b10820a3d0e49f27aeead26302b3e74413033512eb502447b39f0e5776f21c72b8feacd0d0035fefcdbfab72a805eb7d423b
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SSDEEP
49152:rvyI22SsaNYfdPBldt698dBcjHctflEmLek/znLVGdn7FTHHB72eh2NT:rvf22SsaNYfdPBldt6+dBcjHctfhLA7
Malware Config
Extracted
quasar
1.4.1
Office04
98.218.3.74:4782
3808ff71-c2df-4538-8d66-6459677347c3
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encryption_key
24BCF759F51AE66E5C4BF0A521BA79747D6F977F
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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