General
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Target
Client-built.exe
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Size
3.1MB
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MD5
bf26d70d3a38d05517c602b97e5a268a
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SHA1
f5f1575c40372830ab1371d5f1fbf82fe391d029
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SHA256
1a1444626a8922e75ae44bf78539dc24eb825ab23cb20990644b5d240760fae6
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SHA512
3af213fdd07b2a0ba0b2370bcc9cdb4faaf4236034dbaac4a30d979574ddff2819ec1164ced05726f4e767657a0565f3ea464b1ff40c56a4d837fe96f649a866
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SSDEEP
49152:3vyI22SsaNYfdPBldt698dBcjHOtRL6zbR3LoGdB9THHB72eh2NT:3vf22SsaNYfdPBldt6+dBcjHOtRL6l
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.10.100:4782
e638ff56-d6db-4da6-89c0-ce58d353c157
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encryption_key
19F344AAD00EBEB827834E88E18CABFF23285101
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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