Analysis
- max time kernel
149s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
10/09/2026, 05:58
Behavioral task
behavioral1
Sample
openinfo.se.exe
Resource
win10v2004-20260513-en
11 signatures
150 seconds
General
- Target openinfo.se.exe
- Size 3.1MB
- Sample260910-gpf5pshj2y
- SHA256 b301312086cb5cee898cc97fd172bb46c489c0e318243e37d5bcb0672ecafd41
- MD5 4f0f2958bb1c9c3b0c493c058a259343
- SHA1 bb9a41150ef5fcf14e9f68a6feba30b00ef79410
- SHA512 40b6508b9ce7165509bd009349148eae1ecd7cb5cb184c9ddec1c244afd4d7d5bd22828d1efcee59a354156c1dbc6738b7ca792617ac1901d8e8679374506dad
- SSDEEP 49152:Tv/e821/aQWl8P0lSk3aKA3Z+nzERJ6IbR3LoGdPTHHB72eh2NT:Tv2821/aQWl8P0lSk3DA3Z+nzERJ6i
- TLSH T131E56B143BF85E27E1BBE677E5B0041267F0FC1AB363EB0B2581677A1C53B5098426A7
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Extracted
Family
-
quasar
Version
-
1.4.1
Botnet
-
Office04
C2
-
openinfo.se:443
-
www.openinfo.se:443
-
openinfo.se:80
-
www.openinfo.se:80
Mutex
-
c97b94d2-818f-4e42-9c63-b6892eaaa769
Attributes
-
encryption_key
ED3227F773701D05083B11A65776F95F93EEEF5E
-
install_name
Client.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Quasar payload 2 IoCs
resource yara_rule behavioral2/memory/1320-1-0x0000000000460000-0x0000000000784000-memory.dmp family_quasar behavioral2/files/0x000300000000043e-15.dat family_quasar - Executes dropped EXE 2 IoCs
pid Process 5028 Client.exe 2036 Client.exe - 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 4780 schtasks.exe 2640 schtasks.exe - Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 1320 openinfo.se.exe Token: SeDebugPrivilege 5028 Client.exe Token: SeDebugPrivilege 2036 Client.exe - Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1320 wrote to memory of 4780 1320 openinfo.se.exe 89 PID 1320 wrote to memory of 5028 1320 openinfo.se.exe 91 PID 5028 wrote to memory of 2640 5028 Client.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\openinfo.se.exe"C:\Users\Admin\AppData\Local\Temp\openinfo.se.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1320 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
PID:4780
-
-
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5028 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
PID:2640
-
-
-
C:\Users\Admin\AppData\Roaming\SubDir\Client.exeC:\Users\Admin\AppData\Roaming\SubDir\Client.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2036
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
- Size 3.1MB
- SHA256 b301312086cb5cee898cc97fd172bb46c489c0e318243e37d5bcb0672ecafd41
- MD5 4f0f2958bb1c9c3b0c493c058a259343
- SHA1 bb9a41150ef5fcf14e9f68a6feba30b00ef79410
- SHA512 40b6508b9ce7165509bd009349148eae1ecd7cb5cb184c9ddec1c244afd4d7d5bd22828d1efcee59a354156c1dbc6738b7ca792617ac1901d8e8679374506dad
- SSDEEP 49152:Tv/e821/aQWl8P0lSk3aKA3Z+nzERJ6IbR3LoGdPTHHB72eh2NT:Tv2821/aQWl8P0lSk3DA3Z+nzERJ6i
- TLSH T131E56B143BF85E27E1BBE677E5B0041267F0FC1AB363EB0B2581677A1C53B5098426A7
- MD5 SHA1 SHA512 SSDEEP TLSH