Behavioral task
behavioral1
Sample
Client.exe
Resource
win7-20231215-en
General
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Target
Client.exe
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Size
3.1MB
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MD5
f80e59ad6fe7288ef7bfdb69bcdd65e2
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SHA1
f6e03063015301b634e80d8b8acc7e434665b579
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SHA256
8533eb5e96e42716117402dca726d5742e5e9f638908e4cf587cfece90f4cd50
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SHA512
1942691b088c102057bdd2d779c237380850363837c91eaac7c0eb3e408b8cee4dc694b9ababb966a95e17c19a85a4dc26385f9b6e671ed9bc106743e0b385c4
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SSDEEP
49152:evRt62XlaSFNWPjljiFa2RoUYICXRJ6VbR3LoGdvGETHHB72eh2NT:evb62XlaSFNWPjljiFXRoUYICXRJ6n
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.54.1:4782
eb71685b-028d-44d4-bfa8-fe69f35658bf
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encryption_key
A6013FFE97B071ECE46CCB149CA289A9E48E29AE
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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
Java Updater
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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.exe
Files
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Client.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