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
546577b82dae1b84f1e939d92bde3111
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SHA1
12baf22aa0b2b9438ab0d20e6ac0e00da2db546b
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SHA256
48b966126397ec42808334da0b571deba74abab79815657e2e109733134deb5d
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SHA512
c4cc5b43001d0ffa9ddcf4185cfdfc879a4111a72b71506710c522aad4c3006ac4ba9c6f7b5e4d766c26974998baf4ce7ef0f7d886012b450ef572f76e684041
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SSDEEP
49152:KvBt62XlaSFNWPjljiFa2RoUYIUpRJ6HbR3LoGdI5zTHHB72eh2NT:Kvr62XlaSFNWPjljiFXRoUYIUpRJ6Za
Malware Config
Extracted
quasar
1.4.1
Client
192.168.1.6:4782
431bbcbe-cf7d-453f-ba50-bd46b2f6cf74
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encryption_key
4E5D97BF0C74F1FA2E743528CD7454B64E8F6942
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install_name
security.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Java Updater
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
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