General
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Target
23.exe
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Size
3.1MB
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MD5
144d3b5632872c61d0be1861fa4c3c7d
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SHA1
20e825bec3e0108e9b242b2602867dc2594a630d
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SHA256
7d08d10fad5d4d6413efa3b18184c69504bd74885fdc802f17affc23fe5c7fb4
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SHA512
3d271204d3c4643d8c1a748bb47eebac93fbe8341cf7f097ff41ccbd76b420fc0a46d8500f8fe8326ea407750f146a8d97b51912b013ff2d9bd6b682a09953bc
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SSDEEP
49152:qvaY52fyaSZOrPWluWBuGG5g5h6HDkE2HLk/+FQoGdt2t/mTHHB72eh2NT:qvv52fyaSZOrPWluWBDG5g5h6HD0u
Malware Config
Extracted
quasar
1.4.1
Office04
127.0.0.1:4782
010f90d3-bc5a-4a00-80c8-0b8991560621
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encryption_key
359E5B38592F18B9661E8E541FA9852445E51C46
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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
Kokiki
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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 23.exe
Files
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23.exe.exe windows:4 windows 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