quasar | 7c5919ffcd3234d3c520120fbbeb9204e11ca3adfbfc175175a1e087492cbbba

Analysis

max time kernel
3s
max time network
4s
platform
windows11-21h2_x64
resource
win11-20251231-en
resource tags

arch:x64arch:x86image:win11-20251231-enlocale:en-usos:windows11-21h2-x64system
submitted
18/01/2026, 15:07

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Reason

Machine shutdown

General

Target
2lz.exe
Size 5.9MB
Sample260118-shbgesgv7d
SHA256 7c5919ffcd3234d3c520120fbbeb9204e11ca3adfbfc175175a1e087492cbbba
MD5 12f9b68ed66fed9a1e3c1c2319c837c6
SHA1 e423cbd003c718b6fa268de83806dae6a9fe88c3
SHA512 b649639d2363f135f694f8d5968a6b7adabd76ef793a3fb9313b1c142a0e749be33a5831c4d0cbc32ea170a2100f693755b378280f252dd50bd1ddf008b1ba53
SSDEEP 98304:pMI+LjNr86mjj/UYviu26bbyKS2myX0rPgIh:p8Vmj72wblTmyEgG
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

windows security discovery execution quasar venomrat persistence rat rootkit spyware stealer trojan

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

windows security

quasarrat220-24487.portmap.io:24487

Mutex

VNM_MUTEX_mOPqShedZxvAqgLrWL

Attributes

encryption_key
7mvA2TfKjvMIY0zZeMKF
install_name
Client.exe
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
log_directory
Logs
reconnect_delay
3000
startup_key
Venom Client Startup
subdirectory
SubDir

Signatures

Contains code to disable Windows Defender 3 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

resource	yara_rule
behavioral2/files/0x001e00000002b2dd-20.dat	disable_win_def
behavioral2/memory/2624-22-0x00000000001F0000-0x000000000027C000-memory.dmp	disable_win_def
behavioral2/memory/2624-30-0x0000000004BE0000-0x0000000004BF0000-memory.dmp	disable_win_def

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/files/0x001e00000002b2dd-20.dat	family_quasar
behavioral2/memory/2624-22-0x00000000001F0000-0x000000000027C000-memory.dmp	family_quasar

VenomRAT
VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.
rat rootkit stealer venomrat
Venomrat family
venomrat

Executes dropped EXE 2 IoCs

pid	Process
5416	PAYPAL.EXE
2624	WINDOWS SECURITY.EXE

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
1	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4376	2624	WerFault.exe	78

System Location Discovery: System Language Discovery 1 TTPs 7 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2lz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PAYPAL.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WINDOWS SECURITY.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
336	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
336	PING.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
2204	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2624	WINDOWS SECURITY.EXE
Token: SeDebugPrivilege	2624	WINDOWS SECURITY.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5416	PAYPAL.EXE
2624	WINDOWS SECURITY.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4760 wrote to memory of 5416	4760	2lz.exe	77
PID 4760 wrote to memory of 2624	4760	2lz.exe	78
PID 2624 wrote to memory of 2204	2624	WINDOWS SECURITY.EXE	80
PID 2624 wrote to memory of 2944	2624	WINDOWS SECURITY.EXE	82
PID 2944 wrote to memory of 2700	2944	cmd.exe	86
PID 2944 wrote to memory of 336	2944	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\2lz.exe
"C:\Users\Admin\AppData\Local\Temp\2lz.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4760
- C:\Users\Admin\AppData\Local\Temp\PAYPAL.EXE
  "C:\Users\Admin\AppData\Local\Temp\PAYPAL.EXE"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:5416
- C:\Users\Admin\AppData\Local\Temp\WINDOWS SECURITY.EXE
  "C:\Users\Admin\AppData\Local\Temp\WINDOWS SECURITY.EXE"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2624
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Venom Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\WINDOWS SECURITY.EXE" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2204
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\XEwSIyWfdT7m.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2944
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      System Location Discovery: System Language Discovery
      PID:2700
  - - C:\Windows\SysWOW64\PING.EXE
      ping -n 10 localhost
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:336
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2624 -s 2244
    3⤵
    - Program crash
    PID:4376

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2624 -ip 2624
1⤵
PID:5024

Network

MITRE ATT&CK Enterprise v16

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

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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PAYPAL.EXE

Path C:\Users\Admin\AppData\Local\Temp\PAYPAL.EXE
Size 5.3MB
SHA256 9a579053ee79c9ee45e29ac1887aba8cb87936c01026b5f3d830456547adc441
MD5 341b34b571af06277c2f3b4156bd86df
SHA1 ba120240400cc6dcf0e92e732d4f460f3763102b
SHA512 2cbb482d2e087e18b7461c9a317aa249adf12821de17d6dd59f3c17e01394047df31e875a551d23d32a64a46f8db46003c2feced7e967dd159bc65d3bff76e66
SSDEEP 98304:CI+LjNr86mjj/UYviu26bbyKS2myX0rPv:WVmj72wblTmyEv
TLSH
T15646AE62B644247FC05B1A355827EF599D3FBBA12A1A8D8767F04C4CCF7A580393B60B
MD5 SHA1 SHA512 SSDEEP TLSH

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WINDOWS SECURITY.EXE

Path C:\Users\Admin\AppData\Local\Temp\WINDOWS SECURITY.EXE
Size 534KB
SHA256 d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e
MD5 9e14775490cee79c73cb45c2f24f7a73
SHA1 ddd6c7485a5e64a66a0a7598777abdafa7a63950
SHA512 1c0aec61a64400bcf18f6f0e5a950c68b7a25492b07290e3793a759f616c1b361ed6472d260d0f379b691567216a1f9e53af53b2dc89711df618a4463c8d0317
SSDEEP 12288:ijxIhDXIsMzz2ze1gejMd3mD88i2i3PdjfAag06:i9+IsM55O3glgPO
TLSH
T11CC46C10B7E48E6AE2EE1B3EF03149118B71FC467766F74B0E8654AD2D32345AD41BA3
MD5 SHA1 SHA512 SSDEEP TLSH

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XEwSIyWfdT7m.bat

Path C:\Users\Admin\AppData\Local\Temp\XEwSIyWfdT7m.bat
Size 213B
SHA256 41d382a2c593aca0440279404c19497166f6600e2369812f2819cf76cc0f0324
MD5 f5ed6ad74ca5fa6fbe12adaf95abbb3d
SHA1 d00cbe198acac7cf754e95032a651054c4bdeccc
SHA512 10dbf7b4a62b978398c3115139cc6453aa1f20281d9ee7917ec4c14aeb99b2b5a2e1319624c90bfd0735c0a1be14c8c367dabc1d9945ae127124ce34afba4af6
TLSH
T19CD023415745C95E05004C0B59A5624CF0A9249D1F4CFE638500889C03C7D4DF597743
MD5 SHA1 SHA512 TLSH

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memory/2624-30-0x0000000004BE0000-0x0000000004BF0000-memory.dmp

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memory/2624-22-0x00000000001F0000-0x000000000027C000-memory.dmp

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memory/2624-35-0x00000000061D0000-0x00000000061DA000-memory.dmp

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memory/2624-28-0x0000000005290000-0x0000000005836000-memory.dmp

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memory/2624-33-0x0000000005E70000-0x0000000005EAC000-memory.dmp

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memory/2624-32-0x0000000005260000-0x0000000005272000-memory.dmp

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memory/2624-31-0x0000000004C60000-0x0000000004CC6000-memory.dmp

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memory/2624-29-0x0000000004CE0000-0x0000000004D72000-memory.dmp

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memory/5416-23-0x00000000028E0000-0x00000000028E1000-memory.dmp

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memory/5416-24-0x0000000002D00000-0x0000000002D53000-memory.dmp

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memory/5416-25-0x0000000002D60000-0x0000000002D8D000-memory.dmp

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memory/5416-26-0x0000000002D90000-0x0000000002DFA000-memory.dmp

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memory/5416-27-0x0000000002B70000-0x0000000002B92000-memory.dmp

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memory/5416-21-0x0000000000400000-0x0000000000B2B000-memory.dmp

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Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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