Analysis
- max time kernel
148s - 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
04/08/2026, 04:22
Behavioral task
behavioral1
Sample
vsbet.reisen.exe
Resource
win10v2004-20260513-en
9 signatures
150 seconds
General
- Target vsbet.reisen.exe
- Size 3.1MB
- Sample260804-ezmzwsch32
- SHA256 b2c989daf3539911dfc536dae6a25c404e0235d8a6896e23dc60c012f48a876b
- MD5 251fda4987731852797c9b94ed16c7e0
- SHA1 f8d6246fe7d5809cace77a9c95ef841e33989370
- SHA512 8fc8bf71429e91459ba586f61caf67c0c720f4a9ae2d57dbe0d56e760226df8dfac802aa2f9b133dbe48d1c8f55a4412acf2be6119259a20532ac0a0bbba62ce
- SSDEEP 49152:rvre821/aQWl8P0lSk3aKA3Z+n+2RJ6IbR3LoGduTHHB72eh2NT:rvK821/aQWl8P0lSk3DA3Z+n+2RJ6i
- TLSH T1C5E56B143BF85E27E1BBE677E5B0041267F0FC1AB363EB0B6581677A1C53B5098026A7
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Extracted
Family
-
quasar
Version
-
1.4.1
Botnet
-
Office04
C2
-
vsbet.reisen:4782
Mutex
-
849be0f8-eec9-4660-8f33-8dd6a03f76cf
Attributes
-
encryption_key
8E95A44086A2AAEBB99953C0805F8B1BE3318987
-
install_name
vortex-ar-platform-2026.2.0-universal-installer.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/4544-1-0x0000000000B80000-0x0000000000EA4000-memory.dmp family_quasar behavioral2/files/0x000d00000001c53b-12.dat family_quasar - Executes dropped EXE 1 IoCs
pid Process 3008 vortex-ar-platform-2026.2.0-universal-installer.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4544 vsbet.reisen.exe Token: SeDebugPrivilege 3008 vortex-ar-platform-2026.2.0-universal-installer.exe - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3008 vortex-ar-platform-2026.2.0-universal-installer.exe - Suspicious use of SendNotifyMessage 1 IoCs
pid Process 3008 vortex-ar-platform-2026.2.0-universal-installer.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4544 wrote to memory of 3008 4544 vsbet.reisen.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\vsbet.reisen.exe"C:\Users\Admin\AppData\Local\Temp\vsbet.reisen.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4544 -
C:\Users\Admin\AppData\Roaming\SubDir\vortex-ar-platform-2026.2.0-universal-installer.exe"C:\Users\Admin\AppData\Roaming\SubDir\vortex-ar-platform-2026.2.0-universal-installer.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:3008
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\SubDir\vortex-ar-platform-2026.2.0-universal-installer.exe
- Size 3.1MB
- SHA256 b2c989daf3539911dfc536dae6a25c404e0235d8a6896e23dc60c012f48a876b
- MD5 251fda4987731852797c9b94ed16c7e0
- SHA1 f8d6246fe7d5809cace77a9c95ef841e33989370
- SHA512 8fc8bf71429e91459ba586f61caf67c0c720f4a9ae2d57dbe0d56e760226df8dfac802aa2f9b133dbe48d1c8f55a4412acf2be6119259a20532ac0a0bbba62ce
- SSDEEP 49152:rvre821/aQWl8P0lSk3aKA3Z+n+2RJ6IbR3LoGduTHHB72eh2NT:rvK821/aQWl8P0lSk3DA3Z+n+2RJ6i
- TLSH T1C5E56B143BF85E27E1BBE677E5B0041267F0FC1AB363EB0B6581677A1C53B5098026A7
- MD5 SHA1 SHA512 SSDEEP TLSH