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General
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Target
Client-built.exe
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Size
3.1MB
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MD5
621755714a193b4d557c2477c185a080
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SHA1
0fa113b4ee92a92274d85ef8b5bccced70f96b74
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SHA256
de5fdd1c4eab3b2ac4281b03fc7a1b24bd815f6b12bce909755fe2738ab94c44
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SHA512
b53972b855f6249ce277cd212933a9bb2f795c1e2e263fec62a6a7068ab9b4541ea99a82b5c3443c3a29486f4f6615f03b7721b7747a46b503a75e342b155ce6
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SSDEEP
98304:6vI62XlaSFNWPjljiFXRoUYID9RJ61Zf:MAZYcY
Malware Config
Extracted
quasar
1.4.1
Office04
10.0.2.15:4782
e5b62a3f-1d76-4ce3-b145-c4738e342ae6
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encryption_key
5A573CB681082703764120F09BB1C9929732AAD8
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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
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