Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240705-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
8b390eb4d2dc32a82c6b8047504fa532
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SHA1
5c6d6b99771b1301002a2a89e8567c8e5d8149d4
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SHA256
aeeedbe5a56241a34a9761b5517a8648cadee5d583b2fe77d7beb1f030b0c9c3
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SHA512
3586923bedc527240bcb6b23d5a55bd55922dc4a2d3a6f7b68bda00d34abb3d473c34ef161199e2515bb8e82536ffc666b91f35f96101395ab6620b20ab13a27
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SSDEEP
49152:pHobtR1o2PmNXo7WCr5sN4Rw8IgXrYdSBewTHHB72eh2NT:pHmRvmNXo7WCr5lw8tVB
Malware Config
Extracted
quasar
1.4.1
Office04
147.185.221.20:18563
147.185.221.20:9835
c2e1b18a-ce93-436d-ad8b-21bf89015e19
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encryption_key
9E968F05BD874BA1BE086FD1774A027473823F49
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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
Processes:
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
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