Static task
static1
Behavioral task
behavioral1
Sample
bfc55cb35294fba322924cd2fe7ab9e79875b2cca66419ee5ef6d675b895349c.exe
Resource
win7-20220414-en
General
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Target
bfc55cb35294fba322924cd2fe7ab9e79875b2cca66419ee5ef6d675b895349c
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Size
683KB
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MD5
a8b9706ed1ca326d4673b88fed84db23
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SHA1
72fb18cdcd67d83fe1484b8ff93ba477e8082f7d
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SHA256
bfc55cb35294fba322924cd2fe7ab9e79875b2cca66419ee5ef6d675b895349c
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SHA512
89c5706bba41e6b25ad1f4431eba26df9145c2292f0c42c64c688851c1882004814bf4444f8013efc1504b4bb2bbb4d11896fec7c2e42088604eedadd28ebb9b
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SSDEEP
12288:SjxIhDXIsMEYNH4TCS6bIOe164YqUy1T2GRR:S9+IsMV1IO9vyjR
Malware Config
Extracted
quasar
2.1.0.0
$77systemtelemtry
192.168.0.44:80
67.61.188.107:80
VNM_MUTEX_OplgS6EDrflEgnBXyU
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encryption_key
6opnJj4VnPTLLOS9SdTg
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install_name
windowsrc.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Windows Registry Handler
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subdirectory
bin
Signatures
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Contains code to disable Windows Defender 1 IoCs
A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.
Processes:
resource yara_rule sample disable_win_def -
Quasar Payload 1 IoCs
Processes:
resource yara_rule sample family_quasar -
Quasar family
Files
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bfc55cb35294fba322924cd2fe7ab9e79875b2cca66419ee5ef6d675b895349c.exe 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: 531KB - Virtual size: 531KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 150KB - Virtual size: 150KB
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