General
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Target
MainBuild.exe
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Size
3.1MB
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MD5
3bbe6fc1601a30703de700e53c6f072f
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SHA1
e59be8b17dde867d5dd52d563f6c115149f4473a
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SHA256
96e859dad002f1e69e810c5f6ac60926f71a5ec03b4a7bde6cb9935f2927fbc3
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SHA512
197a18f9d5d01cee50c160450b23e60b3a770e4140462b032efe44cfd9e9b2a6fa513ada7bef341624e20fd6760ca1e492de4fd2b359da660735dafc518c3ce0
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SSDEEP
49152:Gvkt62XlaSFNWPjljiFa2RoUYIYxrEDkGk/JxfoGdOTHHB72eh2NT:Gv462XlaSFNWPjljiFXRoUYIYx31
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.56.1:4782
25d56285-d107-418c-8a2b-195563744f12
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encryption_key
612E594137626EF1C1C6346882A826EBAFFC773E
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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
System 32
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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 MainBuild.exe
Files
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MainBuild.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