Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240903-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
fd50d9f285fcc9fc27f372120e7fecbb
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SHA1
2a07c56ff7273e0cf6d83b17a538501d32718763
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SHA256
4dcca1869bcc8aa5695f31f26a57f0fb23ba930b83be0ce25a04ceed6bef62ef
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SHA512
885338c24fe5ffdfc8d789556bf7534ce7ae793f0c7b13de91e0af1e756dc07371b2b36f96e2aa32d56834cb2b0a883cd5d057e4d57d1a97961dc02693791961
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SSDEEP
49152:6vbI22SsaNYfdPBldt698dBcjHvXyN1JAIoGdUgTHHB72eh2NT:6vk22SsaNYfdPBldt6+dBcjHvXyv
Malware Config
Extracted
quasar
1.4.1
Office04
193.161.193.99:43991
0078aebf-454a-4862-8d16-b94bd8465d38
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encryption_key
3833C35AA932103E67A3C2ED814028BCDAEA8E15
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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
Processes:
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource Client-built.exe
Files
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Client-built.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