General
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Target
Client-built.exe
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Size
3.1MB
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MD5
eaa441e4d0edee03e52abb82be8c4881
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SHA1
d05a9823cb5d9be9a550622661f7a50cd3dee01c
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SHA256
4825406c53522ffb00ea46a845867eb95332fc165ecbb1402ef168cdf7e9e142
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SHA512
c89f369abd308ab935cf308fe45434e44931c438205dc677f5a4eeb1c12345181f6449f70022d40658f1d0aafda536a0c3c250571d9f7e007597992930ba43b9
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SSDEEP
49152:CvOI22SsaNYfdPBldt698dBcjH8Cg1JnIoGd0THHB72eh2NT:Cvj22SsaNYfdPBldt6+dBcjH8C7
Malware Config
Extracted
quasar
1.4.1
Office04
84.238.229.126:4782
83440351-00e6-4afb-86ed-2408fdde238c
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encryption_key
42B5B1CE9BE00ED0E01B1A1B5F4016B4410B15B6
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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