Analysis
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max time kernel
99s -
max time network
100s -
platform
windows10-ltsc 2021_x64 -
resource
win10ltsc2021-20241023-en -
resource tags
arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system -
submitted
07/12/2024, 14:36
Behavioral task
behavioral1
Sample
Client.exe
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
15 signatures
150 seconds
General
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Target
Client.exe
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Size
48KB
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MD5
0b1d82dcae9ef015991a691b3f9d2530
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SHA1
3578a68865f09b7a0aa3239e4a564c44847d46ac
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SHA256
2bd95dc32d31cbccea67492b6520d361f1c386be53a63c52fa6aafd9b7326afe
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SHA512
017d4b715c9d5dfcd1d8a4a0b6c9ee01d428884c0b2ca4203edc7ea9d7fa065a7aeb00fe51dbf2448b504258d3eb388b888fbaf398e515bcd63e2ec1f0af6f5f
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SSDEEP
768:6ZAVhIL9JfD+5iUtelDSN+iV08YbygepG6x/WvEgK/JUZVc6KN:6ZH1UtKDs4zb1F6x/WnkJUZVclN
Malware Config
Extracted
Family
asyncrat
Version
1.0.7
Botnet
Default
C2
127.0.0.1:8848
127.0.0.1:60073
dfsgmnhsrf23456623423456-60073.portmap.host:8848
dfsgmnhsrf23456623423456-60073.portmap.host:60073
Mutex
DcRatMutex_qwqdanchunxinsfd,mhbm gdfvg
Attributes
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delay
1
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install
true
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install_file
windows defender firewall required.exe
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install_folder
%Temp%
aes.plain
Signatures
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Asyncrat family
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Async RAT payload 1 IoCs
resource yara_rule behavioral1/files/0x0029000000045052-10.dat family_asyncrat -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3495501434-311648039-2993076821-1000\Control Panel\International\Geo\Nation Client.exe -
Executes dropped EXE 1 IoCs
pid Process 772 windows defender firewall required.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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000 taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A taskmgr.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName taskmgr.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 680 timeout.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1152 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 472 Client.exe 472 Client.exe 472 Client.exe 472 Client.exe 472 Client.exe 472 Client.exe 472 Client.exe 472 Client.exe 472 Client.exe 472 Client.exe 472 Client.exe 472 Client.exe 472 Client.exe 472 Client.exe 472 Client.exe 472 Client.exe 472 Client.exe 472 Client.exe 472 Client.exe 472 Client.exe 472 Client.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe -
Suspicious use of AdjustPrivilegeToken 7 IoCs
description pid Process Token: SeDebugPrivilege 472 Client.exe Token: SeDebugPrivilege 892 taskmgr.exe Token: SeSystemProfilePrivilege 892 taskmgr.exe Token: SeCreateGlobalPrivilege 892 taskmgr.exe Token: SeDebugPrivilege 772 windows defender firewall required.exe Token: 33 892 taskmgr.exe Token: SeIncBasePriorityPrivilege 892 taskmgr.exe -
Suspicious use of FindShellTrayWindow 64 IoCs
pid Process 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe -
Suspicious use of SendNotifyMessage 64 IoCs
pid Process 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe 892 taskmgr.exe -
Suspicious use of WriteProcessMemory 10 IoCs
description pid Process procid_target PID 472 wrote to memory of 1856 472 Client.exe 80 PID 472 wrote to memory of 1856 472 Client.exe 80 PID 472 wrote to memory of 2368 472 Client.exe 82 PID 472 wrote to memory of 2368 472 Client.exe 82 PID 2368 wrote to memory of 680 2368 cmd.exe 84 PID 2368 wrote to memory of 680 2368 cmd.exe 84 PID 1856 wrote to memory of 1152 1856 cmd.exe 85 PID 1856 wrote to memory of 1152 1856 cmd.exe 85 PID 2368 wrote to memory of 772 2368 cmd.exe 90 PID 2368 wrote to memory of 772 2368 cmd.exe 90 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\Client.exe"C:\Users\Admin\AppData\Local\Temp\Client.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:472 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "windows defender firewall required" /tr '"C:\Users\Admin\AppData\Local\Temp\windows defender firewall required.exe"' & exit2⤵
- Suspicious use of WriteProcessMemory
PID:1856 -
C:\Windows\system32\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "windows defender firewall required" /tr '"C:\Users\Admin\AppData\Local\Temp\windows defender firewall required.exe"'3⤵
- Scheduled Task/Job: Scheduled Task
PID:1152
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9AB9.tmp.bat""2⤵
- Suspicious use of WriteProcessMemory
PID:2368 -
C:\Windows\system32\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
PID:680
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C:\Users\Admin\AppData\Local\Temp\windows defender firewall required.exe"C:\Users\Admin\AppData\Local\Temp\windows defender firewall required.exe"3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:772
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /01⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:892
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
181B
MD5d040c22c1c95bbdfa44fc6bb62ee89bf
SHA12d5131ac17cdd6d4c275920084d8af0b7246240b
SHA256cb75da1f6e017b850835eaf1d84939af7d0f71ee756ed94799d7f33e8663d301
SHA512cd7a67416ab2540ec11c0d49bf698debc1ed24e8156834907a469fdffdff549dae61a24bfcf5e28b95242041c1c245c347114ad60f64c9b30e3486c10618468d
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Filesize
48KB
MD50b1d82dcae9ef015991a691b3f9d2530
SHA13578a68865f09b7a0aa3239e4a564c44847d46ac
SHA2562bd95dc32d31cbccea67492b6520d361f1c386be53a63c52fa6aafd9b7326afe
SHA512017d4b715c9d5dfcd1d8a4a0b6c9ee01d428884c0b2ca4203edc7ea9d7fa065a7aeb00fe51dbf2448b504258d3eb388b888fbaf398e515bcd63e2ec1f0af6f5f