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General
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Target
polrthujk.exe
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Size
3.1MB
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MD5
cb838b6eafe658027d563c2a67adbd37
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SHA1
422e0bcc834cca0e8d349e08725b2ac4499fbd86
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SHA256
4d9705a277ea2a8de918dd0d05efa543f6e3efc0ddd6aa37ae140fdd028338fc
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SHA512
6c0eefaee665a2fc2f2b9b53995bafeae1959d5d356d2214a208fbe117cf676a0bc8352ffbfa390c6bf7148a34c3a58c34f7c81ed3b5c264602e5ef6ecfa3b99
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SSDEEP
49152:evUt62XlaSFNWPjljiFa2RoUYIdlzfD4OdoGsbbTHHB72eh2NT:evI62XlaSFNWPjljiFXRoUYIdlzn
Malware Config
Extracted
quasar
1.4.1
Office04
127.0.0.1:4040
e51e2b65-e963-4051-9736-67d57ed46798
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encryption_key
AEA258EF65BF1786F0F767C0BE2497ECC304C46F
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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 polrthujk.exe
Files
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polrthujk.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