Static task
static1
Behavioral task
behavioral1
Sample
Rusher Hack/Data/Installer.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
Rusher Hack/Data/Installer.exe
Resource
win10v2004-20220414-en
Behavioral task
behavioral3
Sample
Rusher Hack/RusherHackInstaller.exe
Resource
win7-20220414-en
General
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Target
08fb091d9d284795239c1ffd5f06f339b8b6db726198f5325f4ae55c77199402
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Size
798KB
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MD5
99ecc057418a2cb4973f91b94fcc3aa2
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SHA1
d0db89df21526c8da958112040e8370d8fd2f2b3
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SHA256
08fb091d9d284795239c1ffd5f06f339b8b6db726198f5325f4ae55c77199402
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SHA512
7addf85566e779271189de062b1b852001f908efc6a6cc7b8c8b1f0cf6850241e4a7609945f73391b42be1d89f8a359e99ba886d3667b1dff42197ff5c45ba9c
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SSDEEP
24576:S1qO3fmOet6/11hUpsGBoKeDermjHKwHChRH/RK:SL3OO5JUspermj/HyRH/RK
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
tfNbPwosWP6IOHXzQKKG
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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 2 IoCs
A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.
Processes:
resource yara_rule static1/unpack001/Rusher Hack/Data/Installer.dll disable_win_def static1/unpack001/Rusher Hack/RusherHackInstaller.exe disable_win_def -
Quasar Payload 2 IoCs
Processes:
resource yara_rule static1/unpack001/Rusher Hack/Data/Installer.dll family_quasar static1/unpack001/Rusher Hack/RusherHackInstaller.exe family_quasar -
Quasar family
Files
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08fb091d9d284795239c1ffd5f06f339b8b6db726198f5325f4ae55c77199402.zip
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Rusher Hack/Data/Installer.dll.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
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Rusher Hack/RusherHackInstaller.exe.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