Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240903-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
2b94149c3f189fcfeb12bb357a5ef826
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SHA1
3ab132c97840bbd3295b9ebb5432d4996bda7c60
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SHA256
ccd7a66e3fcf6461917a355c88b073598686a1f7e987378c0a271ee322eadb68
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SHA512
1a713e26af54a3e8967002a6f8a5f9d27305ce9908106fd919ba2c6cd6709901d1555fe49fc42e41095aff7b4a4374ab12b2e1baa660751fce05ecd83bfd847d
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SSDEEP
49152:uvCI22SsaNYfdPBldt698dBcjHY3a0h2arW6oGdESTHHB72eh2NT:uvP22SsaNYfdPBldt6+dBcjH81hf
Malware Config
Extracted
quasar
1.4.1
exe
192.168.4.70:4782
20b94a11-6f09-4a42-b723-e2b3fc07ea20
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encryption_key
85087DC59010C3D9E4749A15AB7F44397E834804
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install_name
Client.exe
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log_directory
Logs
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reconnect_delay
1
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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