General
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Target
Client-built.exe
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Size
3.1MB
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MD5
8002dc8117cbe6ebcbfaf36bb28e88e3
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SHA1
efe5eed3bc761e1e62f08ebc92805e9654b6aa24
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SHA256
d6965856129d06addc58a24ddb896794c70ce2bd207c196ab9dc48dafc68b37f
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SHA512
cefb48180f95e4b7d1405e64cfe0f18e94052a52d63b7c2a38a183fab158327a1e49cdb83d04646f7f19fd4bb8f6b36f1c19baef85813b77887f6b38b775ede1
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SSDEEP
49152:XvrlL26AaNeWgPhlmVqvMQ7XSKqIYKjhtzoGd5THHB72eh2NT:XvRL26AaNeWgPhlmVqkQ7XSKqIYy
Malware Config
Extracted
quasar
1.4.1
Office04
techfor1-59332.portmap.host::59332
52632e42-8a63-4ed3-95d3-0a19933df815
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encryption_key
6CA76EF64E195310669632231B8ED203A85BDDA1
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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