Behavioral task
behavioral1
Sample
yuhhhh.exe
Resource
win7-20231215-en
General
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Target
yuhhhh.exe
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Size
3.1MB
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MD5
9e2d05b883671e1d8589b50b6873cca8
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SHA1
9d968484c903c50e1b59c6bdec81b1578c3e9d8c
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SHA256
8bcdc64f24d7395452c8e7e5a5445c8efda805eaa426b3bde6e3a86de3723906
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SHA512
35e93ef1ed516d54fdfa28d5143325275ff277e1057f9c9385b425167b83bc43f99d808df44cd82de3df944ae2234da874d07cec03436b9424be9385247d8276
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SSDEEP
49152:2vyI22SsaNYfdPBldt698dBcjHyCb1J7LoGdsTHHB72eh2NT:2vf22SsaNYfdPBldt6+dBcjHyCD
Malware Config
Extracted
quasar
1.4.1
yes
myhost20299.ddns.net:4782
c3ac9125-d714-4e57-8c8f-43bc57a74419
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encryption_key
0A1738892DDD413E4509E6D72C566BB7E2E77F43
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install_name
Client.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 yuhhhh.exe
Files
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yuhhhh.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