Analysis
- max time kernel
150s - max time network
153s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
08/08/2026, 17:32
Behavioral task
behavioral1
Sample
ntmyebewekca.exe
Resource
win10v2004-20260513-en
9 signatures
150 seconds
General
- Target ntmyebewekca.exe
- Size 3.1MB
- Sample260808-v4k9vsv1cs
- SHA256 bc033453ae6a4965aac275ec154517bb55c428149ef4107951246ecf17e48674
- MD5 9ad05ac55acf8556d1ef76c52c59c026
- SHA1 88833ac1450538aebc616c95648fb9ebcc2f7610
- SHA512 3e0455138ebeeb971281c96c13f984f6b4f4133adce2002a8f6a97d1619e77f6fa217b53a8d70e2bc4623044673c5710712fa2a8c4daccfcbded65611ab09d9d
- SSDEEP 49152:Kwg1+vozUdzQyySgc8RPdb3aroGd4JTHHB72eh2NT:Kw1vozUdzQyySH8R4
- TLSH T161E56B1477F85E23E0ABE777D6F0001263F0F92AB763EB0B6591677A1C53B5088426A7
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Extracted
Family
-
quasar
Version
-
8.8.8.8:5347;
Botnet
-
ZZZ
C2
-
https://pastebin.com/raw/3Gsg7PXu
Mutex
-
cf45c407-5147-4b39-9110-15906cc0569f
Attributes
-
encryption_key
E0222642503FFF7C210982AA1382402C0824E92C
-
install_name
AggregatorHost.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
-
log_directory
Logs
-
reconnect_delay
1583
-
startup_key
Microsoft Aggregator Host
-
subdirectory
MPC-AH
Signatures
- Quasar payload 2 IoCs
resource yara_rule behavioral2/memory/3412-1-0x0000000000BE0000-0x0000000000F04000-memory.dmp family_quasar behavioral2/files/0x000d00000001c5d1-14.dat family_quasar - Executes dropped EXE 2 IoCs
pid Process 2544 AggregatorHost.exe 4444 AggregatorHost.exe - Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
flow ioc 1 pastebin.com 14 pastebin.com - Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 368 schtasks.exe 1512 schtasks.exe - Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 3412 ntmyebewekca.exe Token: SeDebugPrivilege 2544 AggregatorHost.exe Token: SeDebugPrivilege 4444 AggregatorHost.exe - Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3412 wrote to memory of 368 3412 ntmyebewekca.exe 89 PID 3412 wrote to memory of 2544 3412 ntmyebewekca.exe 91 PID 2544 wrote to memory of 1512 2544 AggregatorHost.exe 93 - 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
-
C:\Users\Admin\AppData\Local\Temp\ntmyebewekca.exe"C:\Users\Admin\AppData\Local\Temp\ntmyebewekca.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3412 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Microsoft Aggregator Host" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\MPC-AH\AggregatorHost.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
PID:368
-
-
C:\Users\Admin\AppData\Roaming\MPC-AH\AggregatorHost.exe"C:\Users\Admin\AppData\Roaming\MPC-AH\AggregatorHost.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2544 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Microsoft Aggregator Host" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\MPC-AH\AggregatorHost.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
PID:1512
-
-
-
C:\Users\Admin\AppData\Roaming\MPC-AH\AggregatorHost.exeC:\Users\Admin\AppData\Roaming\MPC-AH\AggregatorHost.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4444
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\MPC-AH\AggregatorHost.exe
- Size 3.1MB
- SHA256 bc033453ae6a4965aac275ec154517bb55c428149ef4107951246ecf17e48674
- MD5 9ad05ac55acf8556d1ef76c52c59c026
- SHA1 88833ac1450538aebc616c95648fb9ebcc2f7610
- SHA512 3e0455138ebeeb971281c96c13f984f6b4f4133adce2002a8f6a97d1619e77f6fa217b53a8d70e2bc4623044673c5710712fa2a8c4daccfcbded65611ab09d9d
- SSDEEP 49152:Kwg1+vozUdzQyySgc8RPdb3aroGd4JTHHB72eh2NT:Kw1vozUdzQyySH8R4
- TLSH T161E56B1477F85E23E0ABE777D6F0001263F0F92AB763EB0B6591677A1C53B5088426A7
- MD5 SHA1 SHA512 SSDEEP TLSH