quasar | 19f0abf0648c4c993b02b50b4e35224b64ff45b9748dd9dc36c68cf1b42dcbdd

Analysis

max time kernel
142s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
27-05-2024 06:45

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General

Target

783dde94a3c4fdad4663bc9e370e9de8_JaffaCakes118.exe
Size

610KB
MD5

783dde94a3c4fdad4663bc9e370e9de8
SHA1

262fa6fe51d779ae988d6b99ac8ee37d71c75064
SHA256

19f0abf0648c4c993b02b50b4e35224b64ff45b9748dd9dc36c68cf1b42dcbdd
SHA512

a41f2f23272e55d9b275f868439758618f96c30fe47fd433431b07322f135fcbba3c43be199aba86160abe5e362e44ce9aa862bbf48cd0a33b716b278ec565b8
SSDEEP

12288:KU+xqEiGfCnAUfyg1Dv1wH/umXwyTWlxHsgL7A26:TETCnX5Dv+bhTWlxH1L

Score

10^/10

quasar venomrat svhost evasion rat rootkit spyware stealer trojan

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

svhost

myconect.ddns.net:6606

Mutex

VNM_MUTEX_rHOHbrAQKctPD4d68w

Attributes

encryption_key
rDFwhCyuKMqXO7llDpB2
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Venom Client Startup
subdirectory
SubDir

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.

Processes:

resource	yara_rule
behavioral2/files/0x0008000000023420-10.dat	disable_win_def
behavioral2/memory/2892-19-0x00000000004C0000-0x000000000056A000-memory.dmp	disable_win_def

Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs

evasion trojan

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

Processes:

Pnabmtbcti.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection	Pnabmtbcti.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	Pnabmtbcti.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	Pnabmtbcti.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	Pnabmtbcti.exe

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

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/files/0x0008000000023420-10.dat	family_quasar
behavioral2/memory/2892-19-0x00000000004C0000-0x000000000056A000-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

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

Pnabmtbcti.exe783dde94a3c4fdad4663bc9e370e9de8_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	Pnabmtbcti.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	783dde94a3c4fdad4663bc9e370e9de8_JaffaCakes118.exe

Executes dropped EXE 3 IoCs

Processes:

Pnabmtbcti.exeClient.exePnabmtbcti.exe

pid	Process
2892	Pnabmtbcti.exe
4504	Client.exe
4652	Pnabmtbcti.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

Pnabmtbcti.exe

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

Processes:

flow	ioc
14	ip-api.com

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

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/Job

T1053

Processes:

schtasks.exeschtasks.exe

pid	Process
4828	schtasks.exe
2948	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

Processes:

PING.EXE

pid	Process
1748	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

Processes:

powershell.exePnabmtbcti.exePnabmtbcti.exe

pid	Process
3004	powershell.exe
3004	powershell.exe
2892	Pnabmtbcti.exe
2892	Pnabmtbcti.exe
2892	Pnabmtbcti.exe
2892	Pnabmtbcti.exe
2892	Pnabmtbcti.exe
2892	Pnabmtbcti.exe
2892	Pnabmtbcti.exe
2892	Pnabmtbcti.exe
4652	Pnabmtbcti.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

Pnabmtbcti.exepowershell.exeClient.exePnabmtbcti.exe

description	pid	Process
Token: SeDebugPrivilege	2892	Pnabmtbcti.exe
Token: SeDebugPrivilege	3004	powershell.exe
Token: SeDebugPrivilege	4504	Client.exe
Token: SeDebugPrivilege	4504	Client.exe
Token: SeDebugPrivilege	4652	Pnabmtbcti.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid	Process
4504	Client.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

783dde94a3c4fdad4663bc9e370e9de8_JaffaCakes118.exePnabmtbcti.exeClient.execmd.execmd.exe

description	pid	Process	procid_target
PID 2776 wrote to memory of 2892	2776	783dde94a3c4fdad4663bc9e370e9de8_JaffaCakes118.exe	84
PID 2776 wrote to memory of 2892	2776	783dde94a3c4fdad4663bc9e370e9de8_JaffaCakes118.exe	84
PID 2776 wrote to memory of 2892	2776	783dde94a3c4fdad4663bc9e370e9de8_JaffaCakes118.exe	84
PID 2892 wrote to memory of 4828	2892	Pnabmtbcti.exe	88
PID 2892 wrote to memory of 4828	2892	Pnabmtbcti.exe	88
PID 2892 wrote to memory of 4828	2892	Pnabmtbcti.exe	88
PID 2892 wrote to memory of 4504	2892	Pnabmtbcti.exe	90
PID 2892 wrote to memory of 4504	2892	Pnabmtbcti.exe	90
PID 2892 wrote to memory of 4504	2892	Pnabmtbcti.exe	90
PID 2892 wrote to memory of 3004	2892	Pnabmtbcti.exe	91
PID 2892 wrote to memory of 3004	2892	Pnabmtbcti.exe	91
PID 2892 wrote to memory of 3004	2892	Pnabmtbcti.exe	91
PID 4504 wrote to memory of 2948	4504	Client.exe	94
PID 4504 wrote to memory of 2948	4504	Client.exe	94
PID 4504 wrote to memory of 2948	4504	Client.exe	94
PID 2892 wrote to memory of 4908	2892	Pnabmtbcti.exe	101
PID 2892 wrote to memory of 4908	2892	Pnabmtbcti.exe	101
PID 2892 wrote to memory of 4908	2892	Pnabmtbcti.exe	101
PID 4908 wrote to memory of 4736	4908	cmd.exe	103
PID 4908 wrote to memory of 4736	4908	cmd.exe	103
PID 4908 wrote to memory of 4736	4908	cmd.exe	103
PID 2892 wrote to memory of 1388	2892	Pnabmtbcti.exe	108
PID 2892 wrote to memory of 1388	2892	Pnabmtbcti.exe	108
PID 2892 wrote to memory of 1388	2892	Pnabmtbcti.exe	108
PID 1388 wrote to memory of 1668	1388	cmd.exe	110
PID 1388 wrote to memory of 1668	1388	cmd.exe	110
PID 1388 wrote to memory of 1668	1388	cmd.exe	110
PID 1388 wrote to memory of 1748	1388	cmd.exe	111
PID 1388 wrote to memory of 1748	1388	cmd.exe	111
PID 1388 wrote to memory of 1748	1388	cmd.exe	111
PID 1388 wrote to memory of 4652	1388	cmd.exe	114
PID 1388 wrote to memory of 4652	1388	cmd.exe	114
PID 1388 wrote to memory of 4652	1388	cmd.exe	114

C:\Users\Admin\AppData\Local\Temp\783dde94a3c4fdad4663bc9e370e9de8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\783dde94a3c4fdad4663bc9e370e9de8_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2776
- C:\Users\Admin\AppData\Local\Temp\Pnabmtbcti.exe
  "C:\Users\Admin\AppData\Local\Temp\Pnabmtbcti.exe"
  2⤵
  - Modifies Windows Defender Real-time Protection settings
  - Checks computer location settings
  - Executes dropped EXE
  - Windows security modification
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2892
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Venom Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Pnabmtbcti.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:4828
- - C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
    "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4504
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks" /create /tn "Venom Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
      4⤵
      Creates scheduled task(s)
      PID:2948
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Get-MpPreference -verbose
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3004
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k start /b del /q/f/s %TEMP%\* & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4908
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /K del /q/f/s C:\Users\Admin\AppData\Local\Temp\*
      4⤵
      PID:4736
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\NNgARlylElH1.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1388
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      PID:1668
  - - C:\Windows\SysWOW64\PING.EXE
      ping -n 10 localhost
      4⤵
      Runs ping.exe
      PID:1748
  - - C:\Users\Admin\AppData\Local\Temp\Pnabmtbcti.exe
      "C:\Users\Admin\AppData\Local\Temp\Pnabmtbcti.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4652

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

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

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Downloads

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

Filesize
1KB

MD5
10eab9c2684febb5327b6976f2047587

SHA1
a12ed54146a7f5c4c580416aecb899549712449e

SHA256
f49dbd55029bfbc15134f7c6a4f967d6c39142c63f2e8f1f8c78fab108a2c928

SHA512
7e5fd90fffae723bd0c662a90e0730b507805f072771ee673d1d8c262dbf60c8a03ba5fe088f699a97c2e886380de158b2ccd59ee62e3d012dd6dd14ea9d0e50

Download Submit
C:\Users\Admin\AppData\Local\Temp\Joqnjogev.jpg

Filesize
72KB

MD5
277f0e029298e0dffee3f8820726c6e3

SHA1
df2cdaa12ccc9e0eb0de1871c9fa12cec9f575a2

SHA256
f7ede3780d2e6789dfd5aaf99d8613040e6150f44ab547116817dc2f7ad442a8

SHA512
b2fc83d2e4d682007109be8b33aff144af3ad8f6466b911c6f48516fde5530234ed964d12a82e1e10a4a79130ee59fdc2076106d4f7460e036cdd0454da90272

Download Submit
C:\Users\Admin\AppData\Local\Temp\NNgARlylElH1.bat

Filesize
207B

MD5
b3d18533605e931d66418ff37f04cf58

SHA1
aa39056ba8b2d6d62c8648dd72812432b290e5ea

SHA256
9aee914bc1d1bb723107e4634e9c3008fa69162534f8087605ed9e96ec68b0a1

SHA512
728b4ac8209e713ff82f885ffc9d7177b6ef1bd9b5a4dd76ff5b891568bfbbe08e2b8247991767a964700a81047f9a2dada6d0909e308519b4cbcb820129a537

Download Submit
C:\Users\Admin\AppData\Local\Temp\Pnabmtbcti.exe

Filesize
655KB

MD5
43e5556cab3ba9cd353b0c6cf1548d75

SHA1
64cf51c0d612cb6276e59639071406c1d2e86702

SHA256
286ea33997e28cad2651bc27c091e45c3502c4c7f69e4f28965bf846cf9528b8

SHA512
edde4a5af40e65afbe4e212e356879277f9641e4b8d46950fed33397754fe87ff81a337623e6c5202776e1636cefcd58f0ed94a212e8dd25ba427a017fcb2bdf

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jsxbh4rn.zib.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2776-5-0x00000000747A0000-0x0000000074F50000-memory.dmp

Filesize
7.7MB

Download
memory/2776-3-0x0000000004E90000-0x0000000004F22000-memory.dmp

Filesize
584KB

Download
memory/2776-0-0x00000000747AE000-0x00000000747AF000-memory.dmp

Filesize
4KB

Download
memory/2776-71-0x00000000747AE000-0x00000000747AF000-memory.dmp

Filesize
4KB

Download
memory/2776-4-0x0000000004F80000-0x0000000004F8A000-memory.dmp

Filesize
40KB

Download
memory/2776-72-0x00000000747A0000-0x0000000074F50000-memory.dmp

Filesize
7.7MB

Download
memory/2776-1-0x0000000000400000-0x000000000049E000-memory.dmp

Filesize
632KB

Download
memory/2776-2-0x00000000048E0000-0x0000000004E84000-memory.dmp

Filesize
5.6MB

Download
memory/2892-20-0x00000000747A0000-0x0000000074F50000-memory.dmp

Filesize
7.7MB

Download
memory/2892-23-0x00000000060A0000-0x00000000060DC000-memory.dmp

Filesize
240KB

Download
memory/2892-22-0x00000000053B0000-0x00000000053C2000-memory.dmp

Filesize
72KB

Download
memory/2892-78-0x00000000747A0000-0x0000000074F50000-memory.dmp

Filesize
7.7MB

Download
memory/2892-73-0x00000000747A0000-0x0000000074F50000-memory.dmp

Filesize
7.7MB

Download
memory/2892-21-0x0000000004F00000-0x0000000004F66000-memory.dmp

Filesize
408KB

Download
memory/2892-19-0x00000000004C0000-0x000000000056A000-memory.dmp

Filesize
680KB

Download
memory/2892-18-0x00000000747A0000-0x0000000074F50000-memory.dmp

Filesize
7.7MB

Download
memory/3004-44-0x0000000005F80000-0x0000000005FCC000-memory.dmp

Filesize
304KB

Download
memory/3004-46-0x0000000006F20000-0x0000000006F52000-memory.dmp

Filesize
200KB

Download
memory/3004-57-0x0000000006510000-0x000000000652E000-memory.dmp

Filesize
120KB

Download
memory/3004-58-0x0000000007160000-0x0000000007203000-memory.dmp

Filesize
652KB

Download
memory/3004-59-0x00000000078C0000-0x0000000007F3A000-memory.dmp

Filesize
6.5MB

Download
memory/3004-60-0x0000000007270000-0x000000000728A000-memory.dmp

Filesize
104KB

Download
memory/3004-61-0x00000000072E0000-0x00000000072EA000-memory.dmp

Filesize
40KB

Download
memory/3004-62-0x00000000074F0000-0x0000000007586000-memory.dmp

Filesize
600KB

Download
memory/3004-63-0x0000000007470000-0x0000000007481000-memory.dmp

Filesize
68KB

Download
memory/3004-64-0x00000000074A0000-0x00000000074AE000-memory.dmp

Filesize
56KB

Download
memory/3004-65-0x00000000074B0000-0x00000000074C4000-memory.dmp

Filesize
80KB

Download
memory/3004-66-0x00000000075B0000-0x00000000075CA000-memory.dmp

Filesize
104KB

Download
memory/3004-67-0x0000000007590000-0x0000000007598000-memory.dmp

Filesize
32KB

Download
memory/3004-47-0x000000006E740000-0x000000006E78C000-memory.dmp

Filesize
304KB

Download
memory/3004-43-0x0000000005F50000-0x0000000005F6E000-memory.dmp

Filesize
120KB

Download
memory/3004-42-0x0000000005910000-0x0000000005C64000-memory.dmp

Filesize
3.3MB

Download
memory/3004-31-0x0000000004FA0000-0x0000000004FC2000-memory.dmp

Filesize
136KB

Download
memory/3004-32-0x00000000057B0000-0x0000000005816000-memory.dmp

Filesize
408KB

Download
memory/3004-30-0x0000000005080000-0x00000000056A8000-memory.dmp

Filesize
6.2MB

Download
memory/3004-29-0x0000000002620000-0x0000000002656000-memory.dmp

Filesize
216KB

Download