Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240708-es
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
0e7400b7962021524550a5736d4c568d
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SHA1
517654e75ee5ac6581efdebf7ac55ffb4961452f
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SHA256
de51a9e30c97ce174b36d20b3dcadd6f5b3ed330491413373244813d36e6d3d5
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SHA512
f7ba6f8ee3b4ba0b119691876c1c8db8064dbe72e7dc8225192d6d70ce7f35837a8fed25d168a8d0cb23f53c1034de3eb1e6d3eab5d60b66b40ff10739cebe8d
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SSDEEP
49152:CvilL26AaNeWgPhlmVqvMQ7XSKi1RJ6JbR3LoGdM4THHB72eh2NT:CvaL26AaNeWgPhlmVqkQ7XSKi1RJ6L
Malware Config
Extracted
quasar
1.4.1
Office04
23.84.85.170:3389
23.84.85.170:2032
91e4434c-ab59-4a1a-931f-bd0739545abc
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encryption_key
043DA72868D75E77D6E7D6B34CDE151E7FD08F30
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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