General
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Target
aa.exe
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Size
3.1MB
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MD5
3e8cdd629813c4e75a1b2e6d6c46d39f
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SHA1
98a6b4bcfe37ffc5a8a2884d8b0b1f9b0e5f1444
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SHA256
d12e1428a758363be465222740a635e1cce61d4dda7373cfdce035f3051aeccd
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SHA512
42491a72c8a60c566b73a15afe67e667242991124fff3420f66d7e8444dc995893fa79a1f32f91d29611410be4c0c651e701e815b01f3d5fbc72ac3e0c048466
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SSDEEP
49152:CvUt62XlaSFNWPjljiFa2RoUYIbNRJ6qbR3LoGdpTHHB72eh2NT:CvI62XlaSFNWPjljiFXRoUYIbNRJ6E
Malware Config
Extracted
quasar
1.4.1
Office04
193.161.193.99:1194
37c3d2aa-6a36-4ee8-a4be-f1c3187fbd03
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encryption_key
E9EE5B51F341491A9CE8837BE89BB18191B86C1E
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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
python
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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 aa.exe
Files
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aa.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