General
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Target
client.exe
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Size
3.1MB
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MD5
3923567323be44b3a3955f8b69585396
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SHA1
c2db51125c1d664ac02e9ea28fbe4fb6fc47e59a
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SHA256
f6fe8fbbafb40ded2572c45d74740d6aa5a7bd6149e2ec2ddedf9030b7411228
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SHA512
5d410bfeb594674195c46dbd228c4967e5df07bd3b6fe3d16a8be48690d58354d4448e35b9fc7a99bca720ed104d6e24be8fd8d8abc31392ccd55a556da14dca
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SSDEEP
49152:KvBt62XlaSFNWPjljiFa2RoUYIx8pnrTFvJKuoGdNTHHB72eh2NT:Kvr62XlaSFNWPjljiFXRoUYI6Tl
Malware Config
Extracted
quasar
1.4.1
watchdog
142.115.43.143:8080
1c1f3ace-a14c-4361-99eb-65aedb6d50fd
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encryption_key
3FAEE4D5FC9BC245D4CA5F4165EAFD34E8D5FE16
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install_name
watchdog.exe
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log_directory
logs
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reconnect_delay
3000
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startup_key
watchdog
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subdirectory
drivers
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.exe
Files
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client.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