General
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Target
k.exe
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Size
3.1MB
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MD5
3496aafb518d56e7b703d35f05f30d81
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SHA1
29aa1b9c975ee094d271e2048569667c32a07ca4
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SHA256
ccb745604be1d8cfc578d2540f5d8e230fae74513a1ed5887bc492145b0cc8d0
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SHA512
e3712523ebef6c867a7c037ba929e8dd45d452ab8ebc80dcb80df138a5420e574007e3ff0fdfc72496e24cb53756f0e2c3bb565fcc72c4cade130ece935b5bf7
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SSDEEP
49152:KvyI22SsaNYfdPBldt698dBcjHA4fvXoGmqTHHB72eh2NT:Kvf22SsaNYfdPBldt6+dBcjHVfv
Malware Config
Extracted
quasar
1.4.1
Office04
190.104.116.8:139
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
Processes:
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource k.exe
Files
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k.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