General
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Target
Client-built.exe
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Size
3.1MB
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MD5
19984e015fa1a640a86c1daec54fdabc
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SHA1
d3823156228804226ce7592f45e24ffe8f964602
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SHA256
56553e9d3cddfdc387221ea8c7e0e205420adbcb0cff285535f822aa7c627521
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SHA512
31f12193ff5dc1de5af27661e47641dbcb1d6d056dc25080a1514c0aee8e3ffa1bbc9c2f2b94c56379aec615bb9b70b1b31a7fc6cb596e6479c93c840c29d3c5
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SSDEEP
49152:3vbI22SsaNYfdPBldt698dBcjHQfmh1J5WoGdCtTHHB72eh2NT:3vk22SsaNYfdPBldt6+dBcjHQfmm
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.0.6:4782
536deaa9-57d2-448a-ae01-b604426d7fa6
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encryption_key
DBB529B3F56F6D23695F8D7AC9BA28484A0D6D0F
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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
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: 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