General
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Target
Client-built.exe
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Size
3.1MB
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MD5
fef7fc18a56919307292dad1b0481e8e
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SHA1
1b4cc3b74a2c5c43cad76cf12f7b03dafe6dad3a
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SHA256
d2422e4e839fa1da5bdb80a4762ba07c26c6134eb9f00e691894ec5312024c83
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SHA512
6fd9b368c64364b28e35a972fe5dc25f3afc3ce13ab4bb8764c9a80018bf97b1c6e13b2026750dc5dc08909a3f7054b85c5d23ef59217489f1d7807e3132e568
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SSDEEP
49152:Gv3I22SsaNYfdPBldt698dBcjHPsRJ6ObR3LoGdbrTHHB72eh2NT:Gv422SsaNYfdPBldt6+dBcjHPsRJ6Ir
Malware Config
Extracted
quasar
1.4.1
Office04
10.127.1.127:4782
27b4bceb-071c-49a0-8bca-3a989c114a17
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encryption_key
EAEDFD6C6C0EA0BF7F7A63603931D231453DE1D6
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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