quasar | d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e

General

Target

d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe
Size

534KB
MD5

9e14775490cee79c73cb45c2f24f7a73
SHA1

ddd6c7485a5e64a66a0a7598777abdafa7a63950
SHA256

d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e
SHA512

1c0aec61a64400bcf18f6f0e5a950c68b7a25492b07290e3793a759f616c1b361ed6472d260d0f379b691567216a1f9e53af53b2dc89711df618a4463c8d0317
SSDEEP

12288:ijxIhDXIsMzz2ze1gejMd3mD88i2i3PdjfAag06:i9+IsM55O3glgPO

Score

10^/10

quasar venomrat windows security rat rootkit spyware stealer trojan

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

windows security

C2

quasarrat220-24487.portmap.io:24487

Mutex

VNM_MUTEX_mOPqShedZxvAqgLrWL

Attributes

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

Signatures

Contains code to disable Windows Defender 1 IoCs

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

Processes:

resource	yara_rule
behavioral1/memory/1920-1-0x0000000001180000-0x000000000120C000-memory.dmp	disable_win_def

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

Quasar payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1920-1-0x0000000001180000-0x000000000120C000-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

Detects Windows executables referencing non-Windows User-Agents 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1920-1-0x0000000001180000-0x000000000120C000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1920-1-0x0000000001180000-0x000000000120C000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

Detects executables containing artifacts associated with disabling Widnows Defender 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1920-1-0x0000000001180000-0x000000000120C000-memory.dmp	INDICATOR_SUSPICIOUS_DisableWinDefender

Detects executables embedding registry key / value combination indicative of disabling Windows Defender features 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1920-1-0x0000000001180000-0x000000000120C000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_RegKeyComb_DisableWinDefender

Looks up external IP address via web service 1 IoCs

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

Processes:

flow	ioc
2	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

Processes:

WerFault.exe

pid	pid_target	Process	procid_target
2860	1920	WerFault.exe	27

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task/Job

T1053

Processes:

schtasks.exe

pid	Process
1428	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

Processes:

PING.EXE

pid	Process
1184	PING.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe

pid	Process
2492	d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exed53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe

description	pid	Process
Token: SeDebugPrivilege	1920	d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe
Token: SeDebugPrivilege	1920	d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe
Token: SeDebugPrivilege	2492	d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe

pid	Process
1920	d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.execmd.exe

description	pid	Process	procid_target
PID 1920 wrote to memory of 1428	1920	d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe	29
PID 1920 wrote to memory of 1428	1920	d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe	29
PID 1920 wrote to memory of 1428	1920	d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe	29
PID 1920 wrote to memory of 1428	1920	d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe	29
PID 1920 wrote to memory of 2692	1920	d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe	31
PID 1920 wrote to memory of 2692	1920	d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe	31
PID 1920 wrote to memory of 2692	1920	d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe	31
PID 1920 wrote to memory of 2692	1920	d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe	31
PID 1920 wrote to memory of 2860	1920	d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe	33
PID 1920 wrote to memory of 2860	1920	d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe	33
PID 1920 wrote to memory of 2860	1920	d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe	33
PID 1920 wrote to memory of 2860	1920	d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe	33
PID 2692 wrote to memory of 2668	2692	cmd.exe	34
PID 2692 wrote to memory of 2668	2692	cmd.exe	34
PID 2692 wrote to memory of 2668	2692	cmd.exe	34
PID 2692 wrote to memory of 2668	2692	cmd.exe	34
PID 2692 wrote to memory of 1184	2692	cmd.exe	35
PID 2692 wrote to memory of 1184	2692	cmd.exe	35
PID 2692 wrote to memory of 1184	2692	cmd.exe	35
PID 2692 wrote to memory of 1184	2692	cmd.exe	35
PID 2692 wrote to memory of 2492	2692	cmd.exe	36
PID 2692 wrote to memory of 2492	2692	cmd.exe	36
PID 2692 wrote to memory of 2492	2692	cmd.exe	36
PID 2692 wrote to memory of 2492	2692	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe
"C:\Users\Admin\AppData\Local\Temp\d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1920
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks" /create /tn "Venom Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe" /rl HIGHEST /f
  2⤵
  - Creates scheduled task(s)
  PID:1428
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\xv5zDqIJ4cZX.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2692
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:2668
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 10 localhost
    3⤵
    - Runs ping.exe
    PID:1184
- - C:\Users\Admin\AppData\Local\Temp\d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe
    "C:\Users\Admin\AppData\Local\Temp\d53df5b6b080ba24773ca16c7a8b70eeb783ead278712e0c5b44abc84805e60e.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2492
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1920 -s 1432
  2⤵
  - Program crash
  PID:2860

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\xv5zDqIJ4cZX.bat

Filesize
261B

MD5
0f8c5ab7cba2905b8fa14764f402eea1

SHA1
21354c57e47da18a4947d2e0db10016409e0036c

SHA256
08d3438ca69c35ac7b30ccb372c0cdf31363d87bcd21f5dc064c5789c7751591

SHA512
a5555b46c91ddfd165cfa83a8595d7ca90253ca15dd0d451a7a9f0b22727876d2de57d05b2ee950f82ca38c467c2e7c11a4fd1d970327139310169452152feb1

Download Submit
memory/1920-0-0x0000000073EFE000-0x0000000073EFF000-memory.dmp

Filesize
4KB

Download
memory/1920-1-0x0000000001180000-0x000000000120C000-memory.dmp

Filesize
560KB

Download
memory/1920-2-0x0000000073EF0000-0x00000000745DE000-memory.dmp

Filesize
6.9MB

Download
memory/1920-13-0x0000000073EFE000-0x0000000073EFF000-memory.dmp

Filesize
4KB

Download
memory/1920-14-0x0000000073EF0000-0x00000000745DE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads