Behavioral task
behavioral1
Sample
qqsarbuilder.exe
Resource
win7-20240704-en
General
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Target
qqsarbuilder.exe
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Size
3.1MB
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MD5
ea1ab6ce5932a3718821475f19feefea
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SHA1
5ab97ce62532976abd93ed2cf56662b8ec15606c
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SHA256
27f1a7bab299f2c36793116723e05be58c6edff36c07ba24a2703903cbdd6048
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SHA512
e66fa91097b2f725503206bd7e92da486ffd17a9c8fab221387c1d3795e59afedae4fb791b9c530e2e25272a642964e63dc15fe081faed29289c332db8523838
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SSDEEP
49152:fvSI22SsaNYfdPBldt698dBcjHvSZxNESEJk/ijLoGdLqiTHHB72eh2NT:fv/22SsaNYfdPBldt6+dBcjHvUxAv7
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.174.129:4782
4642d254-5910-430f-8e8f-b944ab72b6fd
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encryption_key
F0F78B2B4A3D25098C1C1557DC99FDA4D204F27D
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install_name
windwsupdater.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
windwsupdater
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subdirectory
SubDir
Signatures
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Quasar family
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Quasar payload 1 IoCs
Processes:
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource qqsarbuilder.exe
Files
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qqsarbuilder.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