General
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Target
Client-built.exe
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Size
3.1MB
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MD5
315d1cfdb960ac2abbfba65f441596c2
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SHA1
ef213f4d924e3aad26b9dc39df27192c08010128
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SHA256
fea859332ec7e2edc26ed67dbd978175b907be65764a0a182b4d8030f937f097
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SHA512
7dfbc72a5606dd9e2a69b37d6c4a367f84d17b2f483ff1fd5298a77ff810596709be7d28adf988ee26e38f983f75f91b979b306404b7a338b7999c28e9f3de52
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SSDEEP
49152:fv8I22SsaNYfdPBldt698dBcjH4Cg1JWLoGd7THHB72eh2NT:fvx22SsaNYfdPBldt6+dBcjH4CP
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.0.95:4784
22cde6ff-54f2-4dc0-8fc4-916ba8e69579
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encryption_key
2E5C5C80E2A9C06EEE2316240AFAE1589FCF20C3
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install_name
Client.exe
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log_directory
Logs
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reconnect_delay
80
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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