Behavioral task
behavioral1
Sample
WindowsFIXER.exe
Resource
win7-20231215-en
General
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Target
WindowsFIXER.exe
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Size
3.1MB
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MD5
eb7c0c245d9c32ddfa0cffe466731afd
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SHA1
ce3f7cd2d1a275b3dad3574ae3eba2b05231b780
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SHA256
f8a5493df8d1fd882db658e6bc9bc73a95c127084a208ac16b81908789326ddb
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SHA512
7fdec13a5de316723df92c7f50b6660db1dc0eea218c613f55e92e0c6aa598944a02ed357bb6b1ab651d14f8c191e94baedac6ff939e281997af89fc72f7ae96
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SSDEEP
49152:vvaI22SsaNYfdPBldt698dBcjHC1QaEf/zk/M5foGdYHTHHB72eh2NT:vvX22SsaNYfdPBldt6+dBcjHC1Qnt
Malware Config
Extracted
quasar
1.4.1
zoey
192.168.0.107:4782
4249aade-5a88-4333-a688-2a45abbb4402
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encryption_key
4005B48363BCB620C625DB389EC6C97F0F12EBE3
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install_name
WindowsF1XR.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
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource WindowsFIXER.exe
Files
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WindowsFIXER.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