Behavioral task
behavioral1
Sample
nut.exe
Resource
win7-20240319-en
General
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Target
nut.exe
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Size
3.1MB
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MD5
232e7b89f4be6cbc0c706f8520b1c647
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SHA1
359e0860271fc42c64f2a94593515c4111be62b0
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SHA256
df1a4fc766fde3ad56195e192c5f0e33bd0ef088128cca6c95f10e3135669963
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SHA512
a91c1eff2bc646bafb0b9999431c456196d8c558cce8bd11f30d9d4b74593ff96d4981794a825460ee5a74a027e1b7780ac1e6e7bab8871869870256d0c99d1a
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SSDEEP
49152:vvjlL26AaNeWgPhlmVqvMQ7XSK1zbeLDBpXWoGdYTHHB72eh2NT:vvZL26AaNeWgPhlmVqkQ7XSK1Xeq
Malware Config
Extracted
quasar
1.4.1
flyud
45.45.238.213:4782
play.funpass.services:4782
a89e48a0-4af2-4df4-8993-c5a3c3b6d1f7
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encryption_key
CEAEA9FD2F3E18352164BB4D9A6F56EFF5E2D896
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install_name
MusNotifyIcon.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Update
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subdirectory
System32
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 nut.exe
Files
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nut.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