General
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Target
Client-built.exe
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Size
3.1MB
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MD5
cbde5eebe0d834674dce996c8f098b2b
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SHA1
7908dec1fa5b0d9d2b47a647816dd248b0780207
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SHA256
d67ab910ad56e070b5d3cf3d10f0e3a1713f16adc505695685aa9d6c9a6fe790
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SHA512
5ab1f2887686bb1d644acb12bd3a446a6dcae20d66ef1ac24a6c1a5749707d520529fd101ec81e2a81d22a5f1f0ea5c02357bac992fc36253307ebf511969348
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SSDEEP
49152:Pvkt62XlaSFNWPjljiFa2RoUYIwGDkE2Htk/im4oGdmcTHHB72eh2NT:Pv462XlaSFNWPjljiFXRoUYIwGDq1W
Malware Config
Extracted
quasar
1.4.1
Office04
98.218.3.74:4782
e0e3b913-88fa-46a6-b43f-30a7a87602bd
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encryption_key
6F9C27EEE52A9297584149E44D98C7DF193B4BC6
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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
Bob
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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