Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240708-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
30fe4e7e33259e52666ca6cd6eb12ee3
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SHA1
c5c8506ba00e9416197d39149394fceacf3551ac
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SHA256
e190f4cc54506973f7c38fa2cf39148e7bf38887467694d57ae10fc356cd863b
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SHA512
67647d16e50623fc2019a0c88295c7d1dfe715b00cce6d3e15098f2b668e55dfc3e62a1d27cdf8f68f2c2a770b1f83c8d7ec28c03fa627f03e9984f62ef46bd8
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SSDEEP
49152:rvbI22SsaNYfdPBldt698dBcjHidimwmzstoGdaTHHB72eh2NT:rvk22SsaNYfdPBldt6+dBcjHWim+
Malware Config
Extracted
quasar
1.4.1
Office04
184.98.230.97:4545
381fb32a-fd3f-4701-8fca-4b51cb0abac7
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encryption_key
9D21D822B3655AB7418E123B9807F485C0122440
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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
Windows Antivirus
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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 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