General
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Target
Client-built.exe
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Size
3.1MB
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MD5
505980efda9ada79088eaeb7153bf499
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SHA1
4ac3357921729be0cb412a36ef05981f238ee282
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SHA256
6f9f48561da4625b4380b746281cfbd0c1aa0ac5375b7fa163532ecf349b9dca
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SHA512
07dbbf7726a1415c2a8cf2eee32c95b09648e5ac13a3f7c65b6f6638c56f3ef5ccad059ea4e54bb1f15b6ab7b9c14ceecbd39c85d23937fde57ae2ba2c47538c
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SSDEEP
49152:Dvkt62XlaSFNWPjljiFa2RoUYIQH5vbR4jLoGdB7h5STHHB72eh2NT:Dv462XlaSFNWPjljiFXRoUYIQH5Sv7
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.0.198:4782
58015483-f2bb-4ecb-8cbc-2827a3e8b3ff
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encryption_key
B4F9F61B9E113BD06BCF4194DF575CF573E0F621
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install_name
Client.exe
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log_directory
windows-logs
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reconnect_delay
3000
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startup_key
krampus
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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