Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240903-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
84f03f8b89bb599361ebf000c3fd13ce
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SHA1
5507081e72e26ec9bc2d25dec2a14714f7b03318
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SHA256
f0992e9e2ea5d5796c8c5c622f7da893d8151d14c46de8b1847a62d7afd08c6d
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SHA512
09e5bc0b31a2980a3f1e51dc5964c67147aa16bc7124a5f06e237f79b5436810868f7326afbb35ab25ee1559c531ca15e10f8262aa1a061ac45737a42599f464
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SSDEEP
49152:b+KL12toaDsbQPUl+DvccTzVPWj1GTiQjq3Q8Z4IoGtpTHHB72eh2NTd:b+Y12toaDsbQPUl+DvZzVPWjQS7Zl
Malware Config
Extracted
quasar
1.4.1
Slave
85.209.133.13:111
ec2a0662-37ce-47bc-80e5-416bb4627d9b
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encryption_key
D55A711D57A556B5F8341D90111BDC78FB07B322
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install_name
System.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
system
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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