General
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Target
Client-built.exe
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Size
3.1MB
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MD5
7a2b52c45786b1b63b5ce07eb1ae0865
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SHA1
21c47fca7b0278e93d79dec401f8f2640540e946
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SHA256
dbf2303343fab0a78ce528e1b9f553ab86b4693fb4bcfc585fefa7a20038fbd3
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SHA512
75e71497a49636967398da0547aa643f03ce6003892ded04aed111fd7771523c9ea0e8de37d07e07b4313373e98c6f4dc05345bb2cc49802db074c8419ebc50f
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SSDEEP
49152:yvnI22SsaNYfdPBldt698dBcjH69QaEf/rk/M59oGdWTHHB72eh2NT:yvI22SsaNYfdPBldt6+dBcjH69QPr
Malware Config
Extracted
quasar
1.4.1
Office04
98.218.3.74:4782
db685ca2-37a4-4b0f-a77e-669dd933618e
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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
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