quasar | 2cb24e62607d1f4eef2ee22dca37a4eda7b97ea9b3d96443102548fe90c3edc3

Analysis

max time kernel
147s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220718-en
resource tags

arch:x64arch:x86image:win10v2004-20220718-enlocale:en-usos:windows10-2004-x64system
submitted
19-07-2022 06:53

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General

Target

02962ce42a6b3910c33e9f9ace964bba.exe
Size

666KB
MD5

02962ce42a6b3910c33e9f9ace964bba
SHA1

565d1a5cc063503879c5bd0dffa2cfe4e5a2e627
SHA256

2cb24e62607d1f4eef2ee22dca37a4eda7b97ea9b3d96443102548fe90c3edc3
SHA512

96fd7e1a6cd7e2f87274af902c7c327d7f09b1c15861983691a6ddf6a44961175876f97cbf0e31e383a36037ebaac9350c0e96ac49b4940a5ef3cd24ce1a5969

Score

10^/10

quasar venomrat dcnitro01 rat rootkit spyware stealer suricata trojan

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

DCNITRO01

0.tcp.eu.ngrok.io:10352

Mutex

VNM_MUTEX_v9VGaskk4AIKeNY3U6

Attributes

encryption_key
UZHpvfEZMUzQVIJjvgWB
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
dc nitro(venom)
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
behavioral2/memory/4560-130-0x0000000000EF0000-0x0000000000F9C000-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
behavioral2/memory/4560-130-0x0000000000EF0000-0x0000000000F9C000-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
suricata: ET MALWARE Common RAT Connectivity Check Observed
suricata: ET MALWARE Common RAT Connectivity Check Observed
suricata

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
4	ip-api.com

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

T1053

Processes:

schtasks.exe

pid	Process
4540	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

02962ce42a6b3910c33e9f9ace964bba.exe

description	pid	Process
Token: SeDebugPrivilege	4560	02962ce42a6b3910c33e9f9ace964bba.exe
Token: SeDebugPrivilege	4560	02962ce42a6b3910c33e9f9ace964bba.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

02962ce42a6b3910c33e9f9ace964bba.exe

pid	Process
4560	02962ce42a6b3910c33e9f9ace964bba.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

02962ce42a6b3910c33e9f9ace964bba.exe

description	pid	Process	procid_target
PID 4560 wrote to memory of 4540	4560	02962ce42a6b3910c33e9f9ace964bba.exe	79
PID 4560 wrote to memory of 4540	4560	02962ce42a6b3910c33e9f9ace964bba.exe	79
PID 4560 wrote to memory of 4540	4560	02962ce42a6b3910c33e9f9ace964bba.exe	79

C:\Users\Admin\AppData\Local\Temp\02962ce42a6b3910c33e9f9ace964bba.exe
"C:\Users\Admin\AppData\Local\Temp\02962ce42a6b3910c33e9f9ace964bba.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4560
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks" /create /tn "dc nitro(venom)" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\02962ce42a6b3910c33e9f9ace964bba.exe" /rl HIGHEST /f
  2⤵
  - Creates scheduled task(s)
  PID:4540

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4540-136-0x0000000000000000-mapping.dmp

Download
memory/4560-130-0x0000000000EF0000-0x0000000000F9C000-memory.dmp

Filesize
688KB

Download
memory/4560-131-0x0000000005ED0000-0x0000000006474000-memory.dmp

Filesize
5.6MB

Download
memory/4560-132-0x00000000059C0000-0x0000000005A52000-memory.dmp

Filesize
584KB

Download
memory/4560-133-0x0000000005D80000-0x0000000005DE6000-memory.dmp

Filesize
408KB

Download
memory/4560-134-0x0000000006980000-0x0000000006992000-memory.dmp

Filesize
72KB

Download
memory/4560-135-0x0000000006DA0000-0x0000000006DDC000-memory.dmp

Filesize
240KB

Download
memory/4560-137-0x0000000007120000-0x000000000712A000-memory.dmp

Filesize
40KB

Download