quasar | e14fe9800b600ce61b06794233aa47d6fbbc20d18dbb1e531c5deaac995bbca8

Analysis

max time kernel
129s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
26-09-2024 07:12

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General

Target

f7d70adb404cf63562d6541fce16ee94_JaffaCakes118.exe
Size

590KB
MD5

f7d70adb404cf63562d6541fce16ee94
SHA1

7c855ae562c54c6747c682f9403ff902308deeb1
SHA256

e14fe9800b600ce61b06794233aa47d6fbbc20d18dbb1e531c5deaac995bbca8
SHA512

aed0a69aa45018197f04eec259ab4954f0ecd6f0e309a745346282cc46efd4e6567f920a3cfa39326082abff40de6ad932150ae5f6207e1a580d87343410d519
SSDEEP

6144:kU9/iRCAm9wyitWVSIyIXQR3YQJrjYPUotecWo7vMyYp5lQj64cmX3Hrv9Otawza:i3ynm3RsPj7WYUxp+TvotLzAFLBz8LS

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_gdy9bWxR0te3WgTRnI

Attributes

encryption_key
MDXzdQumRqZGIeya7nG9
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.

resource	yara_rule
behavioral2/files/0x00090000000233e4-7.dat	disable_win_def
behavioral2/memory/3888-17-0x00000000009C0000-0x0000000000A4C000-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

description	ioc	Process
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
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection	Windows Defender Security.exe

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/files/0x00090000000233e4-7.dat	family_quasar
behavioral2/memory/3888-17-0x00000000009C0000-0x0000000000A4C000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	f7d70adb404cf63562d6541fce16ee94_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	Windows Defender Security.exe

Executes dropped EXE 3 IoCs

pid	Process
3888	Windows Defender Security.exe
1520	Windows Defender Security.exe
2316	Windows Defender Security.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

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

flow	ioc
12	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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f7d70adb404cf63562d6541fce16ee94_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Windows Defender Security.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Windows Defender Security.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	cmd.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
2708	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2708	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
3728	schtasks.exe
3632	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
3504	powershell.exe
3504	powershell.exe
3888	Windows Defender Security.exe
3888	Windows Defender Security.exe
3888	Windows Defender Security.exe
3888	Windows Defender Security.exe
3888	Windows Defender Security.exe
3888	Windows Defender Security.exe
3888	Windows Defender Security.exe
2316	Windows Defender Security.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	3888	Windows Defender Security.exe
Token: SeDebugPrivilege	3504	powershell.exe
Token: SeDebugPrivilege	1520	Windows Defender Security.exe
Token: SeDebugPrivilege	1520	Windows Defender Security.exe
Token: SeDebugPrivilege	2316	Windows Defender Security.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1520	Windows Defender Security.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 920 wrote to memory of 3888	920	f7d70adb404cf63562d6541fce16ee94_JaffaCakes118.exe	83
PID 920 wrote to memory of 3888	920	f7d70adb404cf63562d6541fce16ee94_JaffaCakes118.exe	83
PID 920 wrote to memory of 3888	920	f7d70adb404cf63562d6541fce16ee94_JaffaCakes118.exe	83
PID 3888 wrote to memory of 3728	3888	Windows Defender Security.exe	85
PID 3888 wrote to memory of 3728	3888	Windows Defender Security.exe	85
PID 3888 wrote to memory of 3728	3888	Windows Defender Security.exe	85
PID 3888 wrote to memory of 1520	3888	Windows Defender Security.exe	87
PID 3888 wrote to memory of 1520	3888	Windows Defender Security.exe	87
PID 3888 wrote to memory of 1520	3888	Windows Defender Security.exe	87
PID 3888 wrote to memory of 3504	3888	Windows Defender Security.exe	88
PID 3888 wrote to memory of 3504	3888	Windows Defender Security.exe	88
PID 3888 wrote to memory of 3504	3888	Windows Defender Security.exe	88
PID 1520 wrote to memory of 3632	1520	Windows Defender Security.exe	90
PID 1520 wrote to memory of 3632	1520	Windows Defender Security.exe	90
PID 1520 wrote to memory of 3632	1520	Windows Defender Security.exe	90
PID 3888 wrote to memory of 2920	3888	Windows Defender Security.exe	92
PID 3888 wrote to memory of 2920	3888	Windows Defender Security.exe	92
PID 3888 wrote to memory of 2920	3888	Windows Defender Security.exe	92
PID 2920 wrote to memory of 4956	2920	cmd.exe	94
PID 2920 wrote to memory of 4956	2920	cmd.exe	94
PID 2920 wrote to memory of 4956	2920	cmd.exe	94
PID 3888 wrote to memory of 2924	3888	Windows Defender Security.exe	101
PID 3888 wrote to memory of 2924	3888	Windows Defender Security.exe	101
PID 3888 wrote to memory of 2924	3888	Windows Defender Security.exe	101
PID 2924 wrote to memory of 4904	2924	cmd.exe	103
PID 2924 wrote to memory of 4904	2924	cmd.exe	103
PID 2924 wrote to memory of 4904	2924	cmd.exe	103
PID 2924 wrote to memory of 2708	2924	cmd.exe	104
PID 2924 wrote to memory of 2708	2924	cmd.exe	104
PID 2924 wrote to memory of 2708	2924	cmd.exe	104
PID 2924 wrote to memory of 2316	2924	cmd.exe	107
PID 2924 wrote to memory of 2316	2924	cmd.exe	107
PID 2924 wrote to memory of 2316	2924	cmd.exe	107

C:\Users\Admin\AppData\Local\Temp\f7d70adb404cf63562d6541fce16ee94_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f7d70adb404cf63562d6541fce16ee94_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:920
- 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:3888
- - 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:3728
- - 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:1520
  - - 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:3632
- - 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:3504
- - 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:2920
  - - 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:4956
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\LU10cNgBx71j.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2924
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      System Location Discovery: System Language Discovery
      PID:4904
  - - 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:2708
  - - 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:2316

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

Replay Monitor

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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\LU10cNgBx71j.bat

Filesize
219B

MD5
d2cc99b155abfd1dfa36d7f78460ca76

SHA1
eb2daf21bd8a6cbff05bb593f33c2e9a08dbae7a

SHA256
df55af02258a355c4271808d6e914ae92184a8d102a10a85ea305fba5c790b75

SHA512
0b12ea67fe1429acb92f8dfae6a1f30ab7b0e585f9dac580c27242067649937228b5ac5ec593140cea8aa761dfdc1355b4996d4ea442e22fb03f79fad9f41879

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1o2ky5js.xjw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
535KB

MD5
6f3b107a20b18244efb6473bae2544b1

SHA1
dc02ec107547c515bffeadcd87e6308c3bdfd390

SHA256
2b23c8f0299f92a4ba0f7d4eea26316cf2ffae2eaf41767ce452464c9951b2a0

SHA512
318b51a7bc6a37f9a4d2ee528d66124b541c9d3f2002ad7a15456071fe090cdb264f6439dbc3fa5471200d2faf5217d01af56b3eafa2830917480b080d31161c

Download Submit
memory/920-1-0x0000000074EF0000-0x00000000754A1000-memory.dmp

Filesize
5.7MB

Download
memory/920-2-0x0000000074EF0000-0x00000000754A1000-memory.dmp

Filesize
5.7MB

Download
memory/920-16-0x0000000074EF0000-0x00000000754A1000-memory.dmp

Filesize
5.7MB

Download
memory/920-0-0x0000000074EF2000-0x0000000074EF3000-memory.dmp

Filesize
4KB

Download
memory/1520-29-0x00000000720C0000-0x0000000072870000-memory.dmp

Filesize
7.7MB

Download
memory/1520-74-0x00000000720C0000-0x0000000072870000-memory.dmp

Filesize
7.7MB

Download
memory/1520-47-0x00000000068B0000-0x00000000068BA000-memory.dmp

Filesize
40KB

Download
memory/3504-64-0x0000000007B00000-0x0000000007B96000-memory.dmp

Filesize
600KB

Download
memory/3504-60-0x00000000077A0000-0x0000000007843000-memory.dmp

Filesize
652KB

Download
memory/3504-69-0x0000000007BA0000-0x0000000007BA8000-memory.dmp

Filesize
32KB

Download
memory/3504-30-0x0000000004FF0000-0x0000000005026000-memory.dmp

Filesize
216KB

Download
memory/3504-31-0x0000000005660000-0x0000000005C88000-memory.dmp

Filesize
6.2MB

Download
memory/3504-32-0x00000000055B0000-0x00000000055D2000-memory.dmp

Filesize
136KB

Download
memory/3504-33-0x0000000005D90000-0x0000000005DF6000-memory.dmp

Filesize
408KB

Download
memory/3504-68-0x0000000007BC0000-0x0000000007BDA000-memory.dmp

Filesize
104KB

Download
memory/3504-43-0x0000000006000000-0x0000000006354000-memory.dmp

Filesize
3.3MB

Download
memory/3504-44-0x0000000006550000-0x000000000656E000-memory.dmp

Filesize
120KB

Download
memory/3504-45-0x0000000006AF0000-0x0000000006B3C000-memory.dmp

Filesize
304KB

Download
memory/3504-67-0x0000000007AC0000-0x0000000007AD4000-memory.dmp

Filesize
80KB

Download
memory/3504-48-0x0000000007560000-0x0000000007592000-memory.dmp

Filesize
200KB

Download
memory/3504-49-0x00000000701A0000-0x00000000701EC000-memory.dmp

Filesize
304KB

Download
memory/3504-59-0x0000000007520000-0x000000000753E000-memory.dmp

Filesize
120KB

Download
memory/3504-66-0x0000000007AB0000-0x0000000007ABE000-memory.dmp

Filesize
56KB

Download
memory/3504-61-0x0000000007ED0000-0x000000000854A000-memory.dmp

Filesize
6.5MB

Download
memory/3504-62-0x0000000007880000-0x000000000789A000-memory.dmp

Filesize
104KB

Download
memory/3504-63-0x00000000078F0000-0x00000000078FA000-memory.dmp

Filesize
40KB

Download
memory/3504-65-0x0000000007A80000-0x0000000007A91000-memory.dmp

Filesize
68KB

Download
memory/3888-19-0x00000000054C0000-0x0000000005552000-memory.dmp

Filesize
584KB

Download
memory/3888-23-0x00000000067A0000-0x00000000067DC000-memory.dmp

Filesize
240KB

Download
memory/3888-20-0x00000000720C0000-0x0000000072870000-memory.dmp

Filesize
7.7MB

Download
memory/3888-21-0x0000000005430000-0x0000000005496000-memory.dmp

Filesize
408KB

Download
memory/3888-22-0x0000000006260000-0x0000000006272000-memory.dmp

Filesize
72KB

Download
memory/3888-72-0x00000000720CE000-0x00000000720CF000-memory.dmp

Filesize
4KB

Download
memory/3888-73-0x00000000720C0000-0x0000000072870000-memory.dmp

Filesize
7.7MB

Download
memory/3888-18-0x0000000005A70000-0x0000000006014000-memory.dmp

Filesize
5.6MB

Download
memory/3888-17-0x00000000009C0000-0x0000000000A4C000-memory.dmp

Filesize
560KB

Download
memory/3888-79-0x00000000720C0000-0x0000000072870000-memory.dmp

Filesize
7.7MB

Download
memory/3888-15-0x00000000720CE000-0x00000000720CF000-memory.dmp

Filesize
4KB

Download