Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
Client-built.exe
Resource
win10v2004-20240802-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
08ecb0b02bf859a82ab371aecbcd2edf
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SHA1
5ffe7ed25c92cf769ff916c11eede7515db94079
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SHA256
7b4f67b43afc6fa86782e199988edb41a81bd7d57a422529d8a6904c747a28d1
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SHA512
4f5cf6e244bc5bd98ac9d0c5015c9ad41300ccfd54201b6a749b8d493651bf2ad4d9d284d12fb68c6916a66e0c0861374dc10cdaee4339d35b8c958c93396d45
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SSDEEP
49152:OvVt62XlaSFNWPjljiFa2RoUYIaUxNESEtk/ivLoGdwTHHB72eh2NT:Ovn62XlaSFNWPjljiFXRoUYI9xYz
Malware Config
Extracted
quasar
1.4.1
Clientelle
169.254.209.234:4782
5e4ad9dc-6748-4f94-81d9-ed6e9f7f2bbd
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encryption_key
CA13683E28921B6940FAEC0047B5F326C73B8430
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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
Login 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