General
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Target
Client-built.exe
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Size
3.4MB
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MD5
637ad5fbde71ea392ff51a41d67294f7
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SHA1
9c17f422e262670a2a8fd7f480e10aa036c0ce5c
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SHA256
0881a94471f5148f76f74e081734c782cad12d26350f90f3b9574d6f482cfbcb
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SHA512
b53273488520c6ea4143d039dcff6777064785ddbe59aa5e6375808318b83724bf164c2a800546d621640efcac71caf75faa40d125f08f55ae7cc6d71ad1791f
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SSDEEP
49152:wmEnyhcFEEfm1CW2tQlmcX6vWbd02eH3THHB72eh2NTDDW:wmLhcSEfm1CW2tQlmcX6gmu
Malware Config
Extracted
quasar
1.4.1
skid
147.185.221.20:18563
147.185.221.20:9835
8c5e43cd-634d-4936-adda-ab19ce84f977
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encryption_key
9E968F05BD874BA1BE086FD1774A027473823F49
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install_name
Windows Host Process.exe
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log_directory
WindowsLogs
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reconnect_delay
3000
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startup_key
Windows Host Process
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subdirectory
Windows
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: 215KB - Virtual size: 215KB
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