General
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Target
Client-built.exe
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Size
3.1MB
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MD5
0e3a741ba36201716079c915282ce457
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SHA1
0b46da777889b26338525adcc5f1a0fc2c1f27e3
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SHA256
bc9d7ab160ae768a0d7cddd828e23c7d97dacae1f0adf71f86f3157931c2575c
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SHA512
1beeb0fe665b0a236a142132f47d2d248f2b825d9e600e8d9a3ad5f3691aa982a93dc7828c4b06ee84e7fe40b6447c79da887f98e200304a04ef1f103ff7237c
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SSDEEP
49152:bv2I22SsaNYfdPBldt698dBcjHkhCmYmzUloGdYITHHB72eh2NT:bvb22SsaNYfdPBldt6+dBcjHkhCmA
Malware Config
Extracted
quasar
1.4.1
Víctima
crismulticuenta-30512.portmap.host:30512
d7480f6f-e85f-4b68-8813-8279e2e6cb96
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encryption_key
8497DDBEB7064872EF356A0D1A58DE488578E1E0
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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
Windows Updater
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subdirectory
SubDir
Signatures
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Quasar family
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Quasar payload 1 IoCs
Processes:
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
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