Behavioral task
behavioral1
Sample
a.exe
Resource
win7-20230831-en
General
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Target
a.exe
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Size
3.1MB
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MD5
cc3ea796575dfcf9944dc2b100b88030
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SHA1
1af5febda7a5380c9be9b56d9552b38427a1b3a4
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SHA256
ea38cf7b0c86d4ac03a1f48d1675c0ee227dcbed89d073b3a67f65774c7f956d
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SHA512
3c97296a50022b5d8ff7ab1811521d1da02a47691197ea1fb3a61160c02f19658f051216bcd81bbaf6e4929a9643e96451febdcc34e4d4c85430fb3572f964aa
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SSDEEP
49152:uv0t62XlaSFNWPjljiFa2RoUYIFxPEak5k/LCtoGdNTHHB72eh2NT:uvo62XlaSFNWPjljiFXRoUYIFxbo
Malware Config
Extracted
quasar
1.4.1
1st
172.234.16.71:4444
0af47b97-43c7-4ab0-95a1-8d9a9a8f797f
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encryption_key
B60DF71C950D2BE72D00A583D2E2E6202680FD45
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install_name
Client.exe
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log_directory
Logs
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reconnect_delay
10
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startup_key
gg
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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 a.exe
Files
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a.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