Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20241010-en
General
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Target
Client-built.exe
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Size
3.2MB
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MD5
986dc7301d3af14a13e54ee6b3963451
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SHA1
4b110fb4248b17b92aa3b3010bc31bb0bd4d1b10
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SHA256
06c4c62665a3434d66fae0cbaebdb2a5f6905bba8ccc333205059ea13e99b135
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SHA512
60f454f655c69d047f901eb4abfe8667e98176ba4c51bc4ab9389c714a610d0c7c2b1d2fe80ed7e4db86e4230e2e5de8efc899647788bb5e3a101e762d6281d2
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SSDEEP
49152:mv+lL26AaNeWgPhlmVqvMQ7XSK7K63Lar/LoGdlTHHB72eh2NTS:mvuL26AaNeWgPhlmVqkQ7XSKT3Ub
Malware Config
Extracted
quasar
1.4.1
t254
t2558628-45777.portmap.host:45777
932c65d6-da03-4072-adb9-2376e00c0a8e
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encryption_key
236980CA68F0687D520534421E23683400294B98
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install_name
Client.exe
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log_directory
Windows_Logs
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reconnect_delay
3000
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startup_key
Windows defender startup client
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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: 105KB - Virtual size: 105KB
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