Behavioral task
behavioral1
Sample
tmp.exe
Resource
win7-20231023-en
General
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Target
tmp
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Size
3.1MB
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MD5
cac610eeae60d8291a852ad9dda90c81
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SHA1
d97afeabdc465c60ba040becfbc5abde19ec9326
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SHA256
7fbdff8ee9930b76ae1ca9310f493ae700e1f7c9aa1b32c47fca64a240317ed4
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SHA512
887edd3ac530c3014aea7d8aab97756aabf250c5cecf01c837a19787403ca6dcb0ed1e84a6842af69c4418e14e7bd9327762db228344229df24ff536ae81d2e5
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SSDEEP
49152:uvct62XlaSFNWPjljiFa2RoUYIy6RJ6LbR3LoGduTHHB72eh2NT:uvg62XlaSFNWPjljiFXRoUYIy6RJ6d
Malware Config
Extracted
quasar
1.4.1
Office04
127.0.0.1:7777
e74501e4-0d13-44ea-ab56-f5adb400d53b
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encryption_key
122EFF89481AC09109CB9613ECDFDD3EE770EBD3
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install_name
Client.exe
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log_directory
Logs
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reconnect_delay
300000
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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
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource tmp
Files
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tmp.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