quasar | 29533c09c2ca85885835c2c3cbe3cba61b4310f14c170cc52bfc0d1bbf1779f5

Analysis

max time kernel
130s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
27-07-2024 01:19

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General

Target

76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.exe
Size

615KB
MD5

76869ef841f2820d0bbadddc46fc3c9a
SHA1

e827d9b426e4ef75f31e6e9d81f47e70da3ac3a2
SHA256

29533c09c2ca85885835c2c3cbe3cba61b4310f14c170cc52bfc0d1bbf1779f5
SHA512

582047f529fae9eacf9b4c762904b21c1d430d219e77b9bc65730e89c00be5f666a452f95cd1b0af067480eb9abd4446bf9431aa4afe2a4f68ad8226d1c11995
SSDEEP

6144:QYhWwTVvvVDzRW1BHH3g1NWT+AKYEM+gW4SmSMX0zCVsVwX+v456/bT8GoaEKwae:dhHTVXFRW1ZpK2bNV0CgwuX8GmkAh

Score

10^/10

quasar venomrat rat discovery evasion rat rootkit spyware stealer trojan

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

RAT

23.105.131.178:7812

Mutex

VNM_MUTEX_It9SqdFDNndEItXfKp

Attributes

encryption_key
txgQXKaATimN7DY8jnPH
install_name
Windows Defender Security.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Windows Update
subdirectory
Microsoft

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/0x00090000000233db-7.dat	disable_win_def
behavioral2/memory/4928-17-0x00000000009D0000-0x0000000000A5C000-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:

Windows Defender Security.exe

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

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

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/files/0x00090000000233db-7.dat	family_quasar
behavioral2/memory/4928-17-0x00000000009D0000-0x0000000000A5C000-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:

Windows Defender Security.exe76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2636447293-1148739154-93880854-1000\Control Panel\International\Geo\Nation	Windows Defender Security.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2636447293-1148739154-93880854-1000\Control Panel\International\Geo\Nation	76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.exe

Executes dropped EXE 3 IoCs

Processes:

Windows Defender Security.exeWindows Defender Security.exeWindows Defender Security.exe

pid	Process
4928	Windows Defender Security.exe
4892	Windows Defender Security.exe
3664	Windows Defender Security.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

Windows Defender Security.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	Windows Defender Security.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features	Windows Defender Security.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
11	ip-api.com

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 12 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

Processes:

Windows Defender Security.exe76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.execmd.execmd.execmd.exeschtasks.exechcp.comPING.EXEWindows Defender Security.exeschtasks.exeWindows Defender Security.exepowershell.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Windows Defender Security.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Windows Defender Security.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Windows Defender Security.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.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

Processes:

PING.EXE

pid	Process
2576	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

Processes:

PING.EXE

pid	Process
2576	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

Processes:

schtasks.exeschtasks.exe

pid	Process
2312	schtasks.exe
3936	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

powershell.exeWindows Defender Security.exeWindows Defender Security.exe

pid	Process
5064	powershell.exe
5064	powershell.exe
4928	Windows Defender Security.exe
4928	Windows Defender Security.exe
4928	Windows Defender Security.exe
4928	Windows Defender Security.exe
4928	Windows Defender Security.exe
4928	Windows Defender Security.exe
4928	Windows Defender Security.exe
3664	Windows Defender Security.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

Windows Defender Security.exepowershell.exeWindows Defender Security.exeWindows Defender Security.exe

description	pid	Process
Token: SeDebugPrivilege	4928	Windows Defender Security.exe
Token: SeDebugPrivilege	5064	powershell.exe
Token: SeDebugPrivilege	4892	Windows Defender Security.exe
Token: SeDebugPrivilege	4892	Windows Defender Security.exe
Token: SeDebugPrivilege	3664	Windows Defender Security.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Windows Defender Security.exe

pid	Process
4892	Windows Defender Security.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.exeWindows Defender Security.exeWindows Defender Security.execmd.execmd.exe

description	pid	Process	procid_target
PID 3704 wrote to memory of 4928	3704	76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.exe	86
PID 3704 wrote to memory of 4928	3704	76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.exe	86
PID 3704 wrote to memory of 4928	3704	76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.exe	86
PID 4928 wrote to memory of 2312	4928	Windows Defender Security.exe	90
PID 4928 wrote to memory of 2312	4928	Windows Defender Security.exe	90
PID 4928 wrote to memory of 2312	4928	Windows Defender Security.exe	90
PID 4928 wrote to memory of 4892	4928	Windows Defender Security.exe	92
PID 4928 wrote to memory of 4892	4928	Windows Defender Security.exe	92
PID 4928 wrote to memory of 4892	4928	Windows Defender Security.exe	92
PID 4928 wrote to memory of 5064	4928	Windows Defender Security.exe	93
PID 4928 wrote to memory of 5064	4928	Windows Defender Security.exe	93
PID 4928 wrote to memory of 5064	4928	Windows Defender Security.exe	93
PID 4892 wrote to memory of 3936	4892	Windows Defender Security.exe	97
PID 4892 wrote to memory of 3936	4892	Windows Defender Security.exe	97
PID 4892 wrote to memory of 3936	4892	Windows Defender Security.exe	97
PID 4928 wrote to memory of 4196	4928	Windows Defender Security.exe	100
PID 4928 wrote to memory of 4196	4928	Windows Defender Security.exe	100
PID 4928 wrote to memory of 4196	4928	Windows Defender Security.exe	100
PID 4196 wrote to memory of 3196	4196	cmd.exe	102
PID 4196 wrote to memory of 3196	4196	cmd.exe	102
PID 4196 wrote to memory of 3196	4196	cmd.exe	102
PID 4928 wrote to memory of 4848	4928	Windows Defender Security.exe	106
PID 4928 wrote to memory of 4848	4928	Windows Defender Security.exe	106
PID 4928 wrote to memory of 4848	4928	Windows Defender Security.exe	106
PID 4848 wrote to memory of 4128	4848	cmd.exe	108
PID 4848 wrote to memory of 4128	4848	cmd.exe	108
PID 4848 wrote to memory of 4128	4848	cmd.exe	108
PID 4848 wrote to memory of 2576	4848	cmd.exe	109
PID 4848 wrote to memory of 2576	4848	cmd.exe	109
PID 4848 wrote to memory of 2576	4848	cmd.exe	109
PID 4848 wrote to memory of 3664	4848	cmd.exe	112
PID 4848 wrote to memory of 3664	4848	cmd.exe	112
PID 4848 wrote to memory of 3664	4848	cmd.exe	112

C:\Users\Admin\AppData\Local\Temp\76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3704
- C:\Users\Admin\AppData\Roaming\Windows Defender Security.exe
  "C:\Users\Admin\AppData\Roaming\Windows Defender Security.exe"
  2⤵
  - Modifies Windows Defender Real-time Protection settings
  - Checks computer location settings
  - Executes dropped EXE
  - Windows security modification
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4928
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows Defender Security.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2312
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows Defender Security.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows Defender Security.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4892
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Windows Defender Security.exe" /rl HIGHEST /f
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:3936
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Get-MpPreference -verbose
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5064
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k start /b del /q/f/s %TEMP%\* & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4196
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /K del /q/f/s C:\Users\Admin\AppData\Local\Temp\*
      4⤵
      System Location Discovery: System Language Discovery
      PID:3196
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\rI3EHTyJ89cy.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4848
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      System Location Discovery: System Language Discovery
      PID:4128
  - - C:\Windows\SysWOW64\PING.EXE
      ping -n 10 localhost
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:2576
  - - C:\Users\Admin\AppData\Roaming\Windows Defender Security.exe
      "C:\Users\Admin\AppData\Roaming\Windows Defender Security.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3664

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

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

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Windows Defender Security.exe.log

Filesize
1KB

MD5
10eab9c2684febb5327b6976f2047587

SHA1
a12ed54146a7f5c4c580416aecb899549712449e

SHA256
f49dbd55029bfbc15134f7c6a4f967d6c39142c63f2e8f1f8c78fab108a2c928

SHA512
7e5fd90fffae723bd0c662a90e0730b507805f072771ee673d1d8c262dbf60c8a03ba5fe088f699a97c2e886380de158b2ccd59ee62e3d012dd6dd14ea9d0e50

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_50fzcwqq.fbx.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\rI3EHTyJ89cy.bat

Filesize
219B

MD5
7f101d01c35d507b20c78749a3b40c7f

SHA1
1b982ef132e1d738032ca889ec7054114178d322

SHA256
4362d8fb26d8bf754953ec68def21af2231edcb9a4763872f6a0fc9974643651

SHA512
61cd553a2bd6ee766af10494c0d58cff3afb5c6c763ecd9e0fccb4748992be7dd66c9e71cbc9b2654e0ba740b443eedac93de4a2766d2913d90fdf25a5556c79

Download Submit
C:\Users\Admin\AppData\Roaming\Windows Defender Security.exe

Filesize
535KB

MD5
0bd3018c9c566328497be54c7d882159

SHA1
8d90c23ee373ab935ba930f25c96374762c4a5a6

SHA256
026971c3fba531247627dd9f3f7d51c566d8df28a52332bd3d0eb8ca55d96176

SHA512
90cfde84ae14de5151c4950b8f8fe05d108a9716f3e0c104e2793a9c8bbb6a4385fe24a1bd9bc020cd061a128bb258ef44ef8679ac4b0e8a280107b22ed9e8cc

Download Submit
memory/3704-1-0x0000000074B80000-0x0000000075131000-memory.dmp

Filesize
5.7MB

Download
memory/3704-2-0x0000000074B80000-0x0000000075131000-memory.dmp

Filesize
5.7MB

Download
memory/3704-0-0x0000000074B82000-0x0000000074B83000-memory.dmp

Filesize
4KB

Download
memory/3704-16-0x0000000074B80000-0x0000000075131000-memory.dmp

Filesize
5.7MB

Download
memory/4892-29-0x0000000071D50000-0x0000000072500000-memory.dmp

Filesize
7.7MB

Download
memory/4892-74-0x0000000071D50000-0x0000000072500000-memory.dmp

Filesize
7.7MB

Download
memory/4892-56-0x0000000006BF0000-0x0000000006BFA000-memory.dmp

Filesize
40KB

Download
memory/4928-21-0x0000000005570000-0x00000000055D6000-memory.dmp

Filesize
408KB

Download
memory/4928-23-0x0000000006810000-0x000000000684C000-memory.dmp

Filesize
240KB

Download
memory/4928-22-0x00000000062D0000-0x00000000062E2000-memory.dmp

Filesize
72KB

Download
memory/4928-20-0x0000000071D50000-0x0000000072500000-memory.dmp

Filesize
7.7MB

Download
memory/4928-80-0x0000000071D50000-0x0000000072500000-memory.dmp

Filesize
7.7MB

Download
memory/4928-19-0x0000000005460000-0x00000000054F2000-memory.dmp

Filesize
584KB

Download
memory/4928-18-0x0000000005B20000-0x00000000060C4000-memory.dmp

Filesize
5.6MB

Download
memory/4928-17-0x00000000009D0000-0x0000000000A5C000-memory.dmp

Filesize
560KB

Download
memory/4928-73-0x0000000071D50000-0x0000000072500000-memory.dmp

Filesize
7.7MB

Download
memory/4928-15-0x0000000071D5E000-0x0000000071D5F000-memory.dmp

Filesize
4KB

Download
memory/4928-72-0x0000000071D5E000-0x0000000071D5F000-memory.dmp

Filesize
4KB

Download
memory/5064-45-0x0000000005EF0000-0x0000000005F3C000-memory.dmp

Filesize
304KB

Download
memory/5064-48-0x000000006FE30000-0x000000006FE7C000-memory.dmp

Filesize
304KB

Download
memory/5064-47-0x0000000006490000-0x00000000064C2000-memory.dmp

Filesize
200KB

Download
memory/5064-59-0x0000000007080000-0x000000000709E000-memory.dmp

Filesize
120KB

Download
memory/5064-60-0x00000000070B0000-0x0000000007153000-memory.dmp

Filesize
652KB

Download
memory/5064-61-0x0000000007820000-0x0000000007E9A000-memory.dmp

Filesize
6.5MB

Download
memory/5064-62-0x00000000071E0000-0x00000000071FA000-memory.dmp

Filesize
104KB

Download
memory/5064-63-0x0000000007250000-0x000000000725A000-memory.dmp

Filesize
40KB

Download
memory/5064-64-0x0000000007460000-0x00000000074F6000-memory.dmp

Filesize
600KB

Download
memory/5064-65-0x00000000073E0000-0x00000000073F1000-memory.dmp

Filesize
68KB

Download
memory/5064-66-0x0000000007410000-0x000000000741E000-memory.dmp

Filesize
56KB

Download
memory/5064-67-0x0000000007420000-0x0000000007434000-memory.dmp

Filesize
80KB

Download
memory/5064-68-0x0000000007520000-0x000000000753A000-memory.dmp

Filesize
104KB

Download
memory/5064-69-0x0000000007500000-0x0000000007508000-memory.dmp

Filesize
32KB

Download
memory/5064-44-0x0000000005EB0000-0x0000000005ECE000-memory.dmp

Filesize
120KB

Download
memory/5064-43-0x0000000005AC0000-0x0000000005E14000-memory.dmp

Filesize
3.3MB

Download
memory/5064-38-0x0000000005800000-0x0000000005866000-memory.dmp

Filesize
408KB

Download
memory/5064-32-0x0000000004F10000-0x0000000004F32000-memory.dmp

Filesize
136KB

Download
memory/5064-31-0x0000000004FA0000-0x00000000055C8000-memory.dmp

Filesize
6.2MB

Download
memory/5064-30-0x00000000025B0000-0x00000000025E6000-memory.dmp

Filesize
216KB

Download