quasar | ff1208db06c1a0514442ebf5bd2b328f087ef8327d4bea9da55399850d23da7e

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12-12-2024 09:34

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General

Target

Purchase Order-9765456-export23....exe
Size

174KB
MD5

90b63162f613ec7e392c15dbcc844750
SHA1

64acb9112424b2937dd3724d4460d64b5b418dbd
SHA256

4c5ae8b60005526d81508706a1dfc6e491a3d51bc2b0dbe2d26d2b53a25cfe50
SHA512

7f3057d6496895317acfadc40c620438709087f1dd61fc88ae210cb27ea036192e591287c295457c10080a380319ff98aee790264d5864668fc7f7d248e1d70b
SSDEEP

3072:c7DOEKsy8Jg6IlXjK1p8rlHfbbxfwIphhup6gma8f5tUzpTnZO+hOeH:H8JfcjW8rlHjb9/pXu8nOnE+N

Score

10^/10

quasar onye discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

onye

winera.ydns.eu:6298

Mutex

4d79333b-1758-4ff2-8d36-e4612bbfd878

Attributes

encryption_key
799E5C34BA6EC18D72E269D0C5CF1A5AC1AD9277
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
settings
subdirectory
SubDir

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
Quasar family
quasar

Quasar payload 1 IoCs

resource	yara_rule
behavioral2/memory/4136-1201-0x0000000000B00000-0x0000000000E24000-memory.dmp	family_quasar

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 2928 created 3536	2928	Purchase Order-9765456-export23....exe	56

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\CustomAttributes.vbs	Purchase Order-9765456-export23....exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2928 set thread context of 4136	2928	Purchase Order-9765456-export23....exe	83

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Purchase Order-9765456-export23....exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4556	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2928	Purchase Order-9765456-export23....exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2928	Purchase Order-9765456-export23....exe
Token: SeDebugPrivilege	2928	Purchase Order-9765456-export23....exe
Token: SeDebugPrivilege	4136	InstallUtil.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4136	InstallUtil.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2928 wrote to memory of 4136	2928	Purchase Order-9765456-export23....exe	83
PID 2928 wrote to memory of 4136	2928	Purchase Order-9765456-export23....exe	83
PID 2928 wrote to memory of 4136	2928	Purchase Order-9765456-export23....exe	83
PID 2928 wrote to memory of 4136	2928	Purchase Order-9765456-export23....exe	83
PID 2928 wrote to memory of 4136	2928	Purchase Order-9765456-export23....exe	83
PID 2928 wrote to memory of 4136	2928	Purchase Order-9765456-export23....exe	83
PID 2928 wrote to memory of 4136	2928	Purchase Order-9765456-export23....exe	83
PID 2928 wrote to memory of 4136	2928	Purchase Order-9765456-export23....exe	83
PID 4136 wrote to memory of 4556	4136	InstallUtil.exe	88
PID 4136 wrote to memory of 4556	4136	InstallUtil.exe	88
PID 4136 wrote to memory of 4556	4136	InstallUtil.exe	88

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3536
- C:\Users\Admin\AppData\Local\Temp\Purchase Order-9765456-export23....exe
  "C:\Users\Admin\AppData\Local\Temp\Purchase Order-9765456-export23....exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Drops startup file
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2928
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4136
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "settings" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4556

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2928-0-0x000000007516E000-0x000000007516F000-memory.dmp

Filesize
4KB

Download
memory/2928-1-0x00000000002A0000-0x00000000002D2000-memory.dmp

Filesize
200KB

Download
memory/2928-2-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/2928-3-0x0000000002590000-0x0000000002598000-memory.dmp

Filesize
32KB

Download
memory/2928-4-0x00000000054C0000-0x00000000056CE000-memory.dmp

Filesize
2.1MB

Download
memory/2928-12-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-14-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-30-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-56-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-62-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-60-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-68-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-66-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-64-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-58-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-54-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-52-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-50-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-48-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-46-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-44-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-42-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-40-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-38-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-36-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-34-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-32-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-28-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-26-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-24-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-22-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-20-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-18-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-16-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-10-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-9-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-6-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-5-0x00000000054C0000-0x00000000056C8000-memory.dmp

Filesize
2.0MB

Download
memory/2928-1181-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/2928-1182-0x0000000005A80000-0x0000000005BFE000-memory.dmp

Filesize
1.5MB

Download
memory/2928-1183-0x00000000058E0000-0x000000000592C000-memory.dmp

Filesize
304KB

Download
memory/2928-1184-0x0000000007430000-0x00000000079D4000-memory.dmp

Filesize
5.6MB

Download
memory/2928-1185-0x00000000059C0000-0x0000000005A14000-memory.dmp

Filesize
336KB

Download
memory/2928-1190-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/2928-1193-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/2928-1195-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/2928-1194-0x000000007516E000-0x000000007516F000-memory.dmp

Filesize
4KB

Download
memory/2928-1197-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/2928-1200-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/2928-1198-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/4136-1201-0x0000000000B00000-0x0000000000E24000-memory.dmp

Filesize
3.1MB

Download
memory/4136-1199-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/4136-1203-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/4136-1202-0x0000000005340000-0x00000000053D2000-memory.dmp

Filesize
584KB

Download
memory/4136-1204-0x00000000054D0000-0x00000000054DA000-memory.dmp

Filesize
40KB

Download
memory/4136-1205-0x0000000006740000-0x0000000006D58000-memory.dmp

Filesize
6.1MB

Download
memory/4136-1206-0x00000000062C0000-0x0000000006310000-memory.dmp

Filesize
320KB

Download
memory/4136-1207-0x0000000006530000-0x00000000065E2000-memory.dmp

Filesize
712KB

Download
memory/4136-1210-0x0000000007860000-0x0000000007872000-memory.dmp

Filesize
72KB

Download
memory/4136-1211-0x00000000078C0000-0x00000000078FC000-memory.dmp

Filesize
240KB

Download
memory/4136-1212-0x0000000007970000-0x00000000079D6000-memory.dmp

Filesize
408KB

Download
memory/4136-1213-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download