Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
Client-built.exe
Resource
win10v2004-20241007-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
e95dbcf6b36ef995310b6eaf26ebe3f7
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SHA1
34fab34a2311b2c67ca62e17f368a9e45390e32a
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SHA256
d28acb4d213710a1244890036bdf80713c4a33584e8036d379802c1881e90f24
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SHA512
87064ecafbd5c2bf2d3c2d5944568b6c8860d62081210fc8f1000269b4d280958e96ece246379c7de43c83c28aabd59463777a7056d93f6de026d8d2c61c85e4
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SSDEEP
49152:bvyI22SsaNYfdPBldt698dBcjHlVSl1J/CoGdPTHHB72eh2NT:bvf22SsaNYfdPBldt6+dBcjHlVS0
Malware Config
Extracted
quasar
1.4.1
Myscasmmer
192.168.0.26:4782
eb08c9a6-9a1e-4b9d-a7ab-8e6e44c6fc66
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encryption_key
2E42F13569D1CAF4CA99640EB8D8A7A5AA13B260
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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 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