quasar | c6820f426b28b93295ca3b768780e8b372424fb72e94b5d0c094b030f53d4721

Reason

Machine shutdown

General

Target

ItroublveTSC.exe
Size

2.0MB
MD5

7c2da2ae36228b8b66ec5e5029e90d08
SHA1

d636baf89fd305a1f694611097ac6e7bcb1f244c
SHA256

c6820f426b28b93295ca3b768780e8b372424fb72e94b5d0c094b030f53d4721
SHA512

93cbc698211b0ab0f96ab3f0eb8d393bcd04580418e08fc6df9b935a7cdd091b619a0edab4771b4c887264b0eef6846e6e08a7be24a8681848a1885206a29960
SSDEEP

49152:DL+qgtiXBVLcHD/QmJqRsVEzCeePMAnUD:OzcBVYHDjcyVMukAUD

Score

10^/10

quasar venomrat office04 discovery rat rootkit spyware stealer trojan

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

Office04

C2

zaidtheboii-50153.portmap.host:50153

Mutex

VNM_MUTEX_fNWmZ9wa8oprRXUo73

Attributes

encryption_key
PJRTtGrfOi1c09c0GCYT
install_name
OneDrive.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Microsoft One Drive
subdirectory
Microsoft One Drive

Signatures

Contains code to disable Windows Defender 2 IoCs

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

resource	yara_rule
behavioral1/files/0x00080000000281bc-21.dat	disable_win_def
behavioral1/memory/3396-36-0x0000000000E50000-0x0000000000EE0000-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
behavioral1/files/0x00080000000281bc-21.dat	family_quasar
behavioral1/memory/3396-36-0x0000000000E50000-0x0000000000EE0000-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

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-1-5-21-809364120-1453366396-340093129-1000\Control Panel\International\Geo\Nation	ItroublveTSC.exe

Executes dropped EXE 2 IoCs

pid	Process
4356	ItroublveTSC.exe
3396	Microsoft OneDrive.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
17	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
2464	1072	WerFault.exe	90

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	ItroublveTSC.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ItroublveTSC.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Microsoft OneDrive.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
3028	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3028	PING.EXE

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
5164	schtasks.exe
5040	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4356	ItroublveTSC.exe
Token: SeDebugPrivilege	3396	Microsoft OneDrive.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4356	ItroublveTSC.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
4356	ItroublveTSC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 812 wrote to memory of 4356	812	ItroublveTSC.exe	83
PID 812 wrote to memory of 4356	812	ItroublveTSC.exe	83
PID 812 wrote to memory of 4356	812	ItroublveTSC.exe	83
PID 812 wrote to memory of 3396	812	ItroublveTSC.exe	84
PID 812 wrote to memory of 3396	812	ItroublveTSC.exe	84
PID 812 wrote to memory of 3396	812	ItroublveTSC.exe	84

C:\Users\Admin\AppData\Local\Temp\ItroublveTSC.exe
"C:\Users\Admin\AppData\Local\Temp\ItroublveTSC.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:812
- C:\Users\Admin\AppData\Roaming\ItroublveTSC.exe
  "C:\Users\Admin\AppData\Roaming\ItroublveTSC.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:4356
- C:\Users\Admin\AppData\Local\Temp\Microsoft OneDrive.exe
  "C:\Users\Admin\AppData\Local\Temp\Microsoft OneDrive.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:3396
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Microsoft One Drive" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Microsoft OneDrive.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:5164
- - C:\Windows\SysWOW64\Microsoft One Drive\OneDrive.exe
    "C:\Windows\SysWOW64\Microsoft One Drive\OneDrive.exe"
    3⤵
    PID:1072
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks" /create /tn "Microsoft One Drive" /sc ONLOGON /tr "C:\Windows\SysWOW64\Microsoft One Drive\OneDrive.exe" /rl HIGHEST /f
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:5040
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\O41tj0Xt3QQs.bat" "
      4⤵
      PID:1996
    - - C:\Windows\SysWOW64\chcp.com
        
        chcp 65001
        5⤵
        
        PID:1316
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping -n 10 localhost
        5⤵
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:3028
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1072 -s 2216
      4⤵
      Program crash
      PID:2464
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Get-MpPreference -verbose
    3⤵
    PID:4948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 1072 -ip 1072
1⤵
PID:2392

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Microsoft OneDrive.exe

Filesize
550KB

MD5
3fce051fde9fbd1302b4ee16f604553b

SHA1
e137d2e6fa0007ddd0bf3a1215a68b37ef2ed653

SHA256
a34954a87d0f4354a21e40ea0e9a9eee4420f47987d40be854ea7b98d6d36226

SHA512
cb07f753043b7705b0e32bbf4e1ae8ddf6176851562dea567e75a4715b1beb4031d35a43b6bf0bc45d5b2da7430be0d87b6ae61b5b2e07c7c8950bb0247e4a5c

Download Submit
C:\Users\Admin\AppData\Local\Temp\O41tj0Xt3QQs.bat

Filesize
211B

MD5
0a70eb10d8fcbce201b2a2436597e374

SHA1
9d5ae1918bd395a5672142d4518b293ebb32a8aa

SHA256
a2ecaaec625e8e6e1c4b004e2d554a541fabb46175c95c7f0b79eab9ccf8d892

SHA512
dc4a5316a991002d295024b742bb78e250c83effac30cb85a5f8f8f8d51e5bd3af1328f91552957cc91461b248c3d745461c5dd07671f4dab7992e993bfc13b9

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_z4z2vu1n.4vp.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\ItroublveTSC.exe

Filesize
3.9MB

MD5
53f43b1e9d99d6a356a332d9073b4736

SHA1
71e6c5a216a66b2b523b1b022d44c10b276c6195

SHA256
584bf67e7c8e93629e175733fe42907e60916047e68f1b4973d4cbf3dd2c22d6

SHA512
e7c5e4b26309e38dd1dd52b4f509c94fb9f50453e4d5c2ba895b02c48457a15c384866fdeb57185b628f10873ed6a6e6936ad170827f4855c9c5eca15ab8f959

Download Submit
memory/812-33-0x0000000074D10000-0x00000000752C1000-memory.dmp

Filesize
5.7MB

Download
memory/812-0-0x0000000074D12000-0x0000000074D13000-memory.dmp

Filesize
4KB

Download
memory/812-1-0x0000000074D10000-0x00000000752C1000-memory.dmp

Filesize
5.7MB

Download
memory/812-2-0x0000000074D10000-0x00000000752C1000-memory.dmp

Filesize
5.7MB

Download
memory/3396-44-0x0000000005DB0000-0x0000000005DC2000-memory.dmp

Filesize
72KB

Download
memory/3396-37-0x0000000005DE0000-0x0000000006386000-memory.dmp

Filesize
5.6MB

Download
memory/3396-39-0x0000000071E80000-0x0000000072631000-memory.dmp

Filesize
7.7MB

Download
memory/3396-43-0x00000000057A0000-0x0000000005806000-memory.dmp

Filesize
408KB

Download
memory/3396-35-0x0000000071E80000-0x0000000072631000-memory.dmp

Filesize
7.7MB

Download
memory/3396-45-0x00000000069B0000-0x00000000069EC000-memory.dmp

Filesize
240KB

Download
memory/3396-36-0x0000000000E50000-0x0000000000EE0000-memory.dmp

Filesize
576KB

Download
memory/4356-34-0x0000000000950000-0x0000000000D36000-memory.dmp

Filesize
3.9MB

Download
memory/4356-38-0x0000000005610000-0x00000000056A2000-memory.dmp

Filesize
584KB

Download
memory/4356-41-0x0000000071E80000-0x0000000072631000-memory.dmp

Filesize
7.7MB

Download
memory/4356-40-0x00000000055F0000-0x00000000055FA000-memory.dmp

Filesize
40KB

Download
memory/4356-42-0x0000000071E80000-0x0000000072631000-memory.dmp

Filesize
7.7MB

Download
memory/4356-32-0x0000000071E8E000-0x0000000071E8F000-memory.dmp

Filesize
4KB

Download
memory/4948-47-0x0000000002AC0000-0x0000000002AF6000-memory.dmp

Filesize
216KB

Download
memory/4948-54-0x0000000005D60000-0x0000000005D82000-memory.dmp

Filesize
136KB

Download
memory/4948-59-0x0000000005F00000-0x0000000005F66000-memory.dmp

Filesize
408KB

Download
memory/4948-60-0x0000000006050000-0x00000000063A7000-memory.dmp

Filesize
3.3MB

Download
memory/4948-61-0x0000000006490000-0x00000000064AE000-memory.dmp

Filesize
120KB

Download
memory/4948-62-0x0000000006540000-0x000000000658C000-memory.dmp

Filesize
304KB

Download
memory/4948-48-0x0000000005690000-0x0000000005D5A000-memory.dmp

Filesize
6.8MB

Download
memory/4948-71-0x0000000007630000-0x0000000007662000-memory.dmp

Filesize
200KB

Download
memory/4948-72-0x000000006F890000-0x000000006F8DC000-memory.dmp

Filesize
304KB

Download
memory/4948-82-0x0000000007690000-0x00000000076AE000-memory.dmp

Filesize
120KB

Download
memory/4948-83-0x00000000076C0000-0x0000000007763000-memory.dmp

Filesize
652KB

Download
memory/4948-84-0x0000000007E40000-0x00000000084BA000-memory.dmp

Filesize
6.5MB

Download
memory/4948-85-0x0000000007800000-0x000000000781A000-memory.dmp

Filesize
104KB

Download
memory/4948-86-0x0000000007860000-0x000000000786A000-memory.dmp

Filesize
40KB

Download
memory/4948-87-0x0000000007A70000-0x0000000007B06000-memory.dmp

Filesize
600KB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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