Behavioral task
behavioral1
Sample
qsr.exe
Resource
win7-20240221-en
General
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Target
qsr.exe
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Size
3.1MB
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MD5
ac7b7f68066cbc718aa2a67f10de5efb
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SHA1
4707a795092858e307d628e51504e06543f9e43b
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SHA256
0ff20c4d06d7f5d2a258515572f7fc1c9e25580b44e4e6469444bd0adffa142a
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SHA512
0016adeffb28c687a11588aa3b002080b0ff9e7f575df358f4ef1a162de1845f14190de5cd948c829b86762c3d81a7802ed1f02af3646313e832cea82ed85884
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SSDEEP
49152:CvfI22SsaNYfdPBldt698dBcjH2CD1JuLoGdNTHHB72eh2NT:Cvw22SsaNYfdPBldt6+dBcjH2C0
Malware Config
Extracted
quasar
1.4.1
faggot04
192.168.1.1:4782
35d8d0ac-1d82-4d57-b8b2-283b0f5da10a
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encryption_key
31FA6EEF03F17469692032E8114E0AE50F34D046
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install_name
Client.exe
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log_directory
Program Files (x64)
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reconnect_delay
3000
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startup_key
Update
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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 qsr.exe
Files
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qsr.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