Analysis
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max time kernel
149s -
max time network
156s -
platform
windows10-1703_x64 -
resource
win10-20240611-en -
resource tags
arch:x64arch:x86image:win10-20240611-enlocale:en-usos:windows10-1703-x64system -
submitted
29-06-2024 11:27
Behavioral task
behavioral1
Sample
normal.exe
Resource
win10-20240611-en
Behavioral task
behavioral2
Sample
normal.exe
Resource
win10v2004-20240508-en
General
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Target
normal.exe
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Size
45KB
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MD5
24de871a8fa5bc8a878ae2b76ccf7081
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SHA1
c31b38ed40a3e89d2c156851740cf50c6b42441e
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SHA256
659a6386bb99408c651bbadc023de111e967f887c92e66f83d38208f8eee3afc
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SHA512
9bfad714aa138a4de3c568540ae07ea65c57f4230748d74561a18dc125de1e47bb1fa27c4fb30b1d52d554e240c48435e60d2c46989453fffa8fe1930195e859
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SSDEEP
768:yu1a71T3EiJfWUzDydmo2qzh58SIkOPILzjb5gs3i+uROUHVnloBDZ7x:yu1a71T3xq2sNF3L3bWsS+yHVlOd7x
Malware Config
Extracted
asyncrat
0.5.8
Default
dzacwFnyvZFC
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delay
3
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install
true
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install_file
update.exe
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install_folder
%AppData%
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pastebin_config
https://pastebin.com/raw/K16mDJV5
Signatures
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Async RAT payload 1 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Roaming\update.exe family_asyncrat -
Executes dropped EXE 1 IoCs
Processes:
update.exepid process 3144 update.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 28 IoCs
Processes:
flow ioc 17 pastebin.com 20 pastebin.com 41 pastebin.com 19 pastebin.com 32 pastebin.com 34 pastebin.com 37 pastebin.com 40 pastebin.com 42 pastebin.com 44 pastebin.com 16 pastebin.com 18 pastebin.com 21 pastebin.com 24 pastebin.com 38 pastebin.com 13 pastebin.com 14 pastebin.com 25 pastebin.com 31 pastebin.com 29 pastebin.com 30 pastebin.com 35 pastebin.com 23 pastebin.com 43 pastebin.com 22 pastebin.com 33 pastebin.com 36 pastebin.com 39 pastebin.com -
Drops file in Windows directory 2 IoCs
Processes:
taskmgr.exedescription ioc process File created C:\Windows\rescache\_merged\4183903823\2290032291.pri taskmgr.exe File created C:\Windows\rescache\_merged\1601268389\715946058.pri taskmgr.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
Processes:
taskmgr.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000 taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A taskmgr.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName taskmgr.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
taskmgr.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 taskmgr.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString taskmgr.exe -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 4664 timeout.exe -
Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.
Processes:
ipconfig.exepid process 4468 ipconfig.exe -
Modifies registry class 1 IoCs
Processes:
taskmgr.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-1453213197-474736321-1741884505-1000_Classes\Local Settings taskmgr.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 45 IoCs
Processes:
normal.exetaskmgr.exepid process 2584 normal.exe 2584 normal.exe 2584 normal.exe 2584 normal.exe 2584 normal.exe 2584 normal.exe 2584 normal.exe 2584 normal.exe 2584 normal.exe 2584 normal.exe 2584 normal.exe 2584 normal.exe 2584 normal.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe -
Suspicious use of AdjustPrivilegeToken 7 IoCs
Processes:
normal.exeupdate.exetaskmgr.exedescription pid process Token: SeDebugPrivilege 2584 normal.exe Token: SeDebugPrivilege 3144 update.exe Token: SeDebugPrivilege 1280 taskmgr.exe Token: SeSystemProfilePrivilege 1280 taskmgr.exe Token: SeCreateGlobalPrivilege 1280 taskmgr.exe Token: 33 1280 taskmgr.exe Token: SeIncBasePriorityPrivilege 1280 taskmgr.exe -
Suspicious use of FindShellTrayWindow 57 IoCs
Processes:
taskmgr.exepid process 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe -
Suspicious use of SendNotifyMessage 57 IoCs
Processes:
taskmgr.exepid process 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe 1280 taskmgr.exe -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
normal.execmd.execmd.execmd.exedescription pid process target process PID 2584 wrote to memory of 2784 2584 normal.exe cmd.exe PID 2584 wrote to memory of 2784 2584 normal.exe cmd.exe PID 2584 wrote to memory of 2784 2584 normal.exe cmd.exe PID 2584 wrote to memory of 4720 2584 normal.exe cmd.exe PID 2584 wrote to memory of 4720 2584 normal.exe cmd.exe PID 2584 wrote to memory of 4720 2584 normal.exe cmd.exe PID 4720 wrote to memory of 4664 4720 cmd.exe timeout.exe PID 4720 wrote to memory of 4664 4720 cmd.exe timeout.exe PID 4720 wrote to memory of 4664 4720 cmd.exe timeout.exe PID 2784 wrote to memory of 4248 2784 cmd.exe schtasks.exe PID 2784 wrote to memory of 4248 2784 cmd.exe schtasks.exe PID 2784 wrote to memory of 4248 2784 cmd.exe schtasks.exe PID 4720 wrote to memory of 3144 4720 cmd.exe update.exe PID 4720 wrote to memory of 3144 4720 cmd.exe update.exe PID 4720 wrote to memory of 3144 4720 cmd.exe update.exe PID 5020 wrote to memory of 4468 5020 cmd.exe ipconfig.exe PID 5020 wrote to memory of 4468 5020 cmd.exe ipconfig.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\normal.exe"C:\Users\Admin\AppData\Local\Temp\normal.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2584 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "update" /tr '"C:\Users\Admin\AppData\Roaming\update.exe"' & exit2⤵
- Suspicious use of WriteProcessMemory
PID:2784 -
C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "update" /tr '"C:\Users\Admin\AppData\Roaming\update.exe"'3⤵
- Scheduled Task/Job: Scheduled Task
PID:4248 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpE772.tmp.bat""2⤵
- Suspicious use of WriteProcessMemory
PID:4720 -
C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
PID:4664 -
C:\Users\Admin\AppData\Roaming\update.exe"C:\Users\Admin\AppData\Roaming\update.exe"3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3144
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Drops file in Windows directory
- Checks SCSI registry key(s)
- Checks processor information in registry
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1280
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:4316
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:5020 -
C:\Windows\system32\ipconfig.exeipconfig2⤵
- Gathers network information
PID:4468
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
150B
MD55e2719daf60432c9227c2112e48b0b90
SHA1de96bf8cdda01a98d94419ae38ca9d6363ee918e
SHA25619ab6ab1d7f4bcec1ef25bb05eb219a16e5ee6cf97507cd3152cf4869151a344
SHA512e22f37479e85d22224c206d400784b726c7ae4ac4d6a4d90685c9d272b0218c68442804521e38b261a266f40005af8de80d7d00e6249bd4a961f498a24556280
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Filesize
45KB
MD524de871a8fa5bc8a878ae2b76ccf7081
SHA1c31b38ed40a3e89d2c156851740cf50c6b42441e
SHA256659a6386bb99408c651bbadc023de111e967f887c92e66f83d38208f8eee3afc
SHA5129bfad714aa138a4de3c568540ae07ea65c57f4230748d74561a18dc125de1e47bb1fa27c4fb30b1d52d554e240c48435e60d2c46989453fffa8fe1930195e859