Behavioral task
behavioral1
Sample
Rat.exe
Resource
win7-20231020-en
General
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Target
Rat.exe
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Size
3.1MB
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MD5
568d2c9150438d4acc8e4b53b6ce70a2
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SHA1
4906af8218e049b73dcf8cf036b193c3da013b70
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SHA256
9a92c27447113d83d81208169d6c000808a584b9a3223f90a2db04e0bab41272
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SHA512
127bf3bc191ce3c4fb0515ceaa18975ba1d24f1b5dd219d6fa0a905f31b0538fb22d8c255c2c12f7e0f56810ba4cf0f54f3fc2db867143a4c286193da7054b8b
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SSDEEP
49152:uvbI22SsaNYfdPBldt698dBcjHCFvXE/sekCqILohd96THHB72eh2NT:uvk22SsaNYfdPBldt6+dBcjHCFvrm
Malware Config
Extracted
quasar
1.4.1
Office04
95.148.114.81:3074
438705a4-4f8c-4da4-ae1a-091d6679f4fc
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encryption_key
AD7FCF7C9C76D3C7D6730075A1E1EB444D205087
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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 Rat.exe
Files
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Rat.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