Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20240226-en
General
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Target
file.exe
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Size
3.1MB
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MD5
cded3e935b1541f8e930f07e8829f551
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SHA1
e7fc4bc9525e5b04b6877ed362ecfcec83fa2d8c
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SHA256
7402de539089b009b82d0d643d7b78234c792407d18ab99fd68de78493dede31
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SHA512
dd979da2ee725fcdb49a094617fd8e41a283f3dbd809fd939c009ff5609a29e0042be7c6d92cf30c1219b0a9d56ee406a865d1e32ef5b56fdc1f3580bce83d05
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SSDEEP
49152:rvSI22SsaNYfdPBldt698dBcjHPCbm9mz6yoGdBTHHB72eh2NT:rv/22SsaNYfdPBldt6+dBcjHabmw
Malware Config
Extracted
quasar
1.4.1
vcruntime140
192.168.178.57:4782
b358e7e9-0f3b-4d47-8e56-2ccc087705cb
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encryption_key
B1736A0DDBD7AF739BB0E3FE61B51CEFF7F8DDB3
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install_name
vcruntime140.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
vcruntime140
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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 file.exe
Files
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file.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