quasar | ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86

Analysis

max time kernel
181s
max time network
206s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
20-05-2022 05:06

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe
Size

534KB
MD5

45d84deec92077d7fdbd7f56091ed5ef
SHA1

f6be7aa7a72ed5c03cf25312833dc19db1c9eb76
SHA256

ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86
SHA512

3dc25114f43e73bd6fa8d8a06d41f2eebdfc55adffbfb1e4571f536f82b4677421400986e47883ca5a485aada4b61553a1e8b1b5bbbae1fe667205d3ea8769e8

Score

10^/10

quasar venomrat fadedrat evasion persistence rat rootkit spyware stealer trojan

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

FadedRAT

66.191.218.42:6606

Mutex

VNM_MUTEX_vy60sMeB6q8c2CPqmk

Attributes

encryption_key
tI07nGR3B89O88FLmj05
install_name
zncodec.exe
log_directory
Logs
reconnect_delay
3000
startup_key
zncodec
subdirectory
rrcodex

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/memory/8-130-0x00000000008D0000-0x000000000095C000-memory.dmp	disable_win_def
behavioral2/files/0x000600000002315e-137.dat	disable_win_def
behavioral2/files/0x000600000002315e-138.dat	disable_win_def

Modifies Windows Defender Real-time Protection settings 3 TTPs
evasion trojan

Modify Registry
T1112

Modify Existing Service
T1031

Disabling Security Tools
T1089

Quasar Payload 3 IoCs

resource	yara_rule
behavioral2/memory/8-130-0x00000000008D0000-0x000000000095C000-memory.dmp	family_quasar
behavioral2/files/0x000600000002315e-137.dat	family_quasar
behavioral2/files/0x000600000002315e-138.dat	family_quasar

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
VenomRAT
VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.
rat rootkit stealer venomrat

Executes dropped EXE 1 IoCs

pid	Process
4728	zncodec.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\zncodec = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe\""	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\zncodec = "\"C:\\Windows\\SysWOW64\\rrcodex\\zncodec.exe\""	zncodec.exe

Looks up external IP address via web service 3 IoCs

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

flow	ioc
25	ip-api.com
35	api.ipify.org
54	api.ipify.org

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rrcodex\zncodec.exe	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe
File opened for modification	C:\Windows\SysWOW64\rrcodex\zncodec.exe	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe
File created	C:\Windows\SysWOW64\rrcodex\r77-x64.dll	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
3976	schtasks.exe
4744	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3016	PING.EXE

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
100	powershell.exe
100	powershell.exe
8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe
8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe
8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe
8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe
8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe
8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe
8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe
4724	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe
Token: SeDebugPrivilege	4728	zncodec.exe
Token: SeDebugPrivilege	100	powershell.exe
Token: SeDebugPrivilege	4728	zncodec.exe
Token: SeDebugPrivilege	4724	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4728	zncodec.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 8 wrote to memory of 3976	8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe	84
PID 8 wrote to memory of 3976	8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe	84
PID 8 wrote to memory of 3976	8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe	84
PID 8 wrote to memory of 4728	8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe	86
PID 8 wrote to memory of 4728	8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe	86
PID 8 wrote to memory of 4728	8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe	86
PID 8 wrote to memory of 100	8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe	87
PID 8 wrote to memory of 100	8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe	87
PID 8 wrote to memory of 100	8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe	87
PID 4728 wrote to memory of 4744	4728	zncodec.exe	89
PID 4728 wrote to memory of 4744	4728	zncodec.exe	89
PID 4728 wrote to memory of 4744	4728	zncodec.exe	89
PID 8 wrote to memory of 1776	8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe	91
PID 8 wrote to memory of 1776	8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe	91
PID 8 wrote to memory of 1776	8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe	91
PID 1776 wrote to memory of 2804	1776	cmd.exe	93
PID 1776 wrote to memory of 2804	1776	cmd.exe	93
PID 1776 wrote to memory of 2804	1776	cmd.exe	93
PID 8 wrote to memory of 3448	8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe	94
PID 8 wrote to memory of 3448	8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe	94
PID 8 wrote to memory of 3448	8	ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe	94
PID 3448 wrote to memory of 2276	3448	cmd.exe	96
PID 3448 wrote to memory of 2276	3448	cmd.exe	96
PID 3448 wrote to memory of 2276	3448	cmd.exe	96
PID 3448 wrote to memory of 3016	3448	cmd.exe	97
PID 3448 wrote to memory of 3016	3448	cmd.exe	97
PID 3448 wrote to memory of 3016	3448	cmd.exe	97
PID 3448 wrote to memory of 4724	3448	cmd.exe	98
PID 3448 wrote to memory of 4724	3448	cmd.exe	98
PID 3448 wrote to memory of 4724	3448	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe
"C:\Users\Admin\AppData\Local\Temp\ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe"
1⤵
- Checks computer location settings
- Windows security modification
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:8
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks" /create /tn "zncodec" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe" /rl HIGHEST /f
  2⤵
  - Creates scheduled task(s)
  PID:3976
- C:\Windows\SysWOW64\rrcodex\zncodec.exe
  "C:\Windows\SysWOW64\rrcodex\zncodec.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4728
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "zncodec" /sc ONLOGON /tr "C:\Windows\SysWOW64\rrcodex\zncodec.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:4744
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell" Get-MpPreference -verbose
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:100
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k start /b del /q/f/s %TEMP%\* & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1776
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /K del /q/f/s C:\Users\Admin\AppData\Local\Temp\*
    3⤵
    PID:2804
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\SsXK6Lgp5eP4.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3448
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:2276
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 10 localhost
    3⤵
    - Runs ping.exe
    PID:3016
- - C:\Users\Admin\AppData\Local\Temp\ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe
    "C:\Users\Admin\AppData\Local\Temp\ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4724

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Disabling Security Tools

T1089

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86.exe.log

Filesize
1KB

MD5
8013ca45a4b68a281377f2c7b517ac8a

SHA1
aff79b7c8f408e5ae6f00cf9d83e2fd95d9affc3

SHA256
234381ea204c431d0936c4141a38381629938e4f5d40dd0ef01de6a282abbae7

SHA512
428305df713c12d2165303a9b0433c83a0e3f3088a9551deb6403e9351814c38c2377e7c22ede57bcd23ca764e02fce431c52aba6bf4b998b89a518129fda2d6

Download Submit
C:\Users\Admin\AppData\Local\Temp\SsXK6Lgp5eP4.bat

Filesize
261B

MD5
3dc0c7f3ba6c3a9895d44293bfc7ec82

SHA1
9dfcf15ca4af7aea699275b94131eaecbf65dc89

SHA256
f7de29d147bc094bdfc34f429dc694da65f57ddc18bac4b97a4d90525e20cfca

SHA512
073572ecca4c604dd6b00047905307d524df994b13960ae768f67df7a1c8553b374b37f6d67df219c54239d54c2301d7892a761d436e68bfe1c719d9006a152c

Download Submit
C:\Windows\SysWOW64\rrcodex\zncodec.exe

Filesize
534KB

MD5
45d84deec92077d7fdbd7f56091ed5ef

SHA1
f6be7aa7a72ed5c03cf25312833dc19db1c9eb76

SHA256
ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86

SHA512
3dc25114f43e73bd6fa8d8a06d41f2eebdfc55adffbfb1e4571f536f82b4677421400986e47883ca5a485aada4b61553a1e8b1b5bbbae1fe667205d3ea8769e8

Download Submit
C:\Windows\SysWOW64\rrcodex\zncodec.exe

Filesize
534KB

MD5
45d84deec92077d7fdbd7f56091ed5ef

SHA1
f6be7aa7a72ed5c03cf25312833dc19db1c9eb76

SHA256
ecbe1cbab7710a6b7c33166eeeb192b981047c7fa0989fe6e0e403f79cb1dc86

SHA512
3dc25114f43e73bd6fa8d8a06d41f2eebdfc55adffbfb1e4571f536f82b4677421400986e47883ca5a485aada4b61553a1e8b1b5bbbae1fe667205d3ea8769e8

Download Submit
memory/8-130-0x00000000008D0000-0x000000000095C000-memory.dmp

Filesize
560KB

Download
memory/8-131-0x0000000005950000-0x0000000005EF4000-memory.dmp

Filesize
5.6MB

Download
memory/8-132-0x00000000053A0000-0x0000000005432000-memory.dmp

Filesize
584KB

Download
memory/8-133-0x0000000005740000-0x00000000057A6000-memory.dmp

Filesize
408KB

Download
memory/8-134-0x0000000006440000-0x0000000006452000-memory.dmp

Filesize
72KB

Download
memory/100-146-0x00000000700B0000-0x00000000700FC000-memory.dmp

Filesize
304KB

Download
memory/100-152-0x0000000007B50000-0x0000000007B5E000-memory.dmp

Filesize
56KB

Download
memory/100-141-0x0000000005730000-0x0000000005D58000-memory.dmp

Filesize
6.2MB

Download
memory/100-142-0x0000000005660000-0x0000000005682000-memory.dmp

Filesize
136KB

Download
memory/100-143-0x0000000005ED0000-0x0000000005F36000-memory.dmp

Filesize
408KB

Download
memory/100-144-0x0000000006610000-0x000000000662E000-memory.dmp

Filesize
120KB

Download
memory/100-145-0x0000000006BD0000-0x0000000006C02000-memory.dmp

Filesize
200KB

Download
memory/100-147-0x0000000006BA0000-0x0000000006BBE000-memory.dmp

Filesize
120KB

Download
memory/100-148-0x0000000007F50000-0x00000000085CA000-memory.dmp

Filesize
6.5MB

Download
memory/100-149-0x0000000007910000-0x000000000792A000-memory.dmp

Filesize
104KB

Download
memory/100-150-0x0000000007980000-0x000000000798A000-memory.dmp

Filesize
40KB

Download
memory/100-151-0x0000000007BA0000-0x0000000007C36000-memory.dmp

Filesize
600KB

Download
memory/100-140-0x0000000002D00000-0x0000000002D36000-memory.dmp

Filesize
216KB

Download
memory/100-153-0x0000000007C60000-0x0000000007C7A000-memory.dmp

Filesize
104KB

Download
memory/100-154-0x0000000007C40000-0x0000000007C48000-memory.dmp

Filesize
32KB

Download
memory/4728-156-0x0000000006540000-0x000000000654A000-memory.dmp

Filesize
40KB

Download