Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20231023-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
60e569fdc26a5ebd61c55b18db940fa9
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SHA1
c2ad1128f8c71f9df6fb74866666bb4f8d0ff3ee
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SHA256
2021bf97c6d6a200867c82fe27f31a4e01961e7efb8bd0fe4d857467f5ca3542
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SHA512
d42d660c76a5e7af6070c7b0953c9a882a05ba56607a07c770427b082c2147a32a23c0125b4857dad7859f04f4aba5c1b8f86c5baf1bfaeafa1dbdd3c757dadc
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SSDEEP
49152:mvbI22SsaNYfdPBldt698dBcjHORqwbRNLoGd9PTHHB72eh2NT:mvk22SsaNYfdPBldt6+dBcjHORqUN
Malware Config
Extracted
quasar
1.4.1
Office04
rattata.ddns.net:4782
d6708ec5-ed6f-420d-af48-db9ff459fc59
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encryption_key
08EF2E54E0B00F8210FCC8BAF01B8C73CA04E630
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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