General
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Target
Client-built.exe
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Size
348KB
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MD5
f13e96cdc731b22a9cc74d9c6ed168e0
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SHA1
8e0cf2aa358f8e0055348e28a149cfbb2344710d
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SHA256
7ccf4d4fb3d20aa355f8ced13e9f4d1f02568964c7e0d026e8a307e08d79429e
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SHA512
7cfe74deca11ed4343f3f952bdad506e23c81539a2599c2980afd56e86d64ac9ea98ac0687c14647f21ef10abe73429ed05826deb62989996a108923b6b5a1b6
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SSDEEP
6144:yFIDkAT6QSkszJqxlLXut4bVVbVz0o/bf8upxuunbU5xq+:i6iksIRXujowuplQ5xq+
Malware Config
Extracted
quasar
1.3.0.0
penis
torbrowser-39837.portmap.host:39837
QSR_MUTEX_l5C5izeTNSIAxx35Fg
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encryption_key
qEyEf0WJT0W987UALat6
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install_name
WindowsSound.exe
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log_directory
Logs
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reconnect_delay
200
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startup_key
WindowsSound
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subdirectory
SystemSoundClient
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: 345KB - Virtual size: 344KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 2KB - 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