quasar | b8494a5132217091e54397571abe6d1ee07b4e136105b834b9dbf3c4edc8ee99

Analysis

max time kernel
94s
max time network
101s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16-12-2024 00:36

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

b8494a5132217091e54397571abe6d1ee07b4e136105b834b9dbf3c4edc8ee99N.exe
Size

5KB
MD5

dbfaaadeb507446fe65aa09ffc3570d0
SHA1

84ee588f8db2217b56e3c20a13ecf161318c56ca
SHA256

b8494a5132217091e54397571abe6d1ee07b4e136105b834b9dbf3c4edc8ee99
SHA512

fd6d89450b312b26fda6070a5b14dedc801b7299c70f8a022a3fa17855650316e0ab0f9e6bb727ad058c8fd8a38e299926e78adadbda966e3312f818c2b1b1c8
SSDEEP

96:AT6gFs60Dctksx+3NqjH+EsUbmPfAFzNt:4kz+ToN6eEsUyK

Score

10^/10

quasar team discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

TEAM

win32updates.DUCKDNS.ORG:12

Mutex

QSR_MUTEX_4XlJYd3sYkHLvFZyoo

Attributes

encryption_key
i5XqKfOlwBlh9rS0kdDD
install_name
winrar.exe
log_directory
Logs
reconnect_delay
3000
startup_key
winrar
subdirectory
winrar

Signatures

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

Quasar payload 1 IoCs

resource	yara_rule
behavioral2/memory/2096-1201-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 2648 created 3396	2648	b8494a5132217091e54397571abe6d1ee07b4e136105b834b9dbf3c4edc8ee99N.exe	56

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\asexe.vbs	b8494a5132217091e54397571abe6d1ee07b4e136105b834b9dbf3c4edc8ee99N.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
25	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2648 set thread context of 2096	2648	b8494a5132217091e54397571abe6d1ee07b4e136105b834b9dbf3c4edc8ee99N.exe	96

System Location Discovery: System Language Discovery 1 TTPs 2 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	b8494a5132217091e54397571abe6d1ee07b4e136105b834b9dbf3c4edc8ee99N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2648	b8494a5132217091e54397571abe6d1ee07b4e136105b834b9dbf3c4edc8ee99N.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2648	b8494a5132217091e54397571abe6d1ee07b4e136105b834b9dbf3c4edc8ee99N.exe
Token: SeDebugPrivilege	2648	b8494a5132217091e54397571abe6d1ee07b4e136105b834b9dbf3c4edc8ee99N.exe
Token: SeDebugPrivilege	2096	InstallUtil.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2096	InstallUtil.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2648 wrote to memory of 2096	2648	b8494a5132217091e54397571abe6d1ee07b4e136105b834b9dbf3c4edc8ee99N.exe	96
PID 2648 wrote to memory of 2096	2648	b8494a5132217091e54397571abe6d1ee07b4e136105b834b9dbf3c4edc8ee99N.exe	96
PID 2648 wrote to memory of 2096	2648	b8494a5132217091e54397571abe6d1ee07b4e136105b834b9dbf3c4edc8ee99N.exe	96
PID 2648 wrote to memory of 2096	2648	b8494a5132217091e54397571abe6d1ee07b4e136105b834b9dbf3c4edc8ee99N.exe	96
PID 2648 wrote to memory of 2096	2648	b8494a5132217091e54397571abe6d1ee07b4e136105b834b9dbf3c4edc8ee99N.exe	96
PID 2648 wrote to memory of 2096	2648	b8494a5132217091e54397571abe6d1ee07b4e136105b834b9dbf3c4edc8ee99N.exe	96
PID 2648 wrote to memory of 2096	2648	b8494a5132217091e54397571abe6d1ee07b4e136105b834b9dbf3c4edc8ee99N.exe	96
PID 2648 wrote to memory of 2096	2648	b8494a5132217091e54397571abe6d1ee07b4e136105b834b9dbf3c4edc8ee99N.exe	96

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3396
- C:\Users\Admin\AppData\Local\Temp\b8494a5132217091e54397571abe6d1ee07b4e136105b834b9dbf3c4edc8ee99N.exe
  "C:\Users\Admin\AppData\Local\Temp\b8494a5132217091e54397571abe6d1ee07b4e136105b834b9dbf3c4edc8ee99N.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Drops startup file
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2648
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2096

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2096-1200-0x00000000746A0000-0x0000000074E50000-memory.dmp

Filesize
7.7MB

Download
memory/2096-1201-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2096-1202-0x0000000005780000-0x0000000005812000-memory.dmp

Filesize
584KB

Download
memory/2096-1203-0x00000000746A0000-0x0000000074E50000-memory.dmp

Filesize
7.7MB

Download
memory/2096-1204-0x00000000056E0000-0x0000000005746000-memory.dmp

Filesize
408KB

Download
memory/2096-1209-0x00000000746A0000-0x0000000074E50000-memory.dmp

Filesize
7.7MB

Download
memory/2096-1208-0x0000000006DE0000-0x0000000006DEA000-memory.dmp

Filesize
40KB

Download
memory/2096-1206-0x0000000006A80000-0x0000000006ABC000-memory.dmp

Filesize
240KB

Download
memory/2096-1205-0x0000000006640000-0x0000000006652000-memory.dmp

Filesize
72KB

Download
memory/2648-33-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-19-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-51-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-67-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-66-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-63-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-61-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-59-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-57-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-55-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-53-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-49-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-47-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-45-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-43-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-41-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-39-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-38-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-35-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-4-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-32-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-29-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-27-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-25-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-21-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-23-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-17-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-15-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-13-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-11-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-10-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-7-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-5-0x0000000005330000-0x000000000543B000-memory.dmp

Filesize
1.0MB

Download
memory/2648-1180-0x00000000746A0000-0x0000000074E50000-memory.dmp

Filesize
7.7MB

Download
memory/2648-1181-0x0000000005580000-0x0000000005602000-memory.dmp

Filesize
520KB

Download
memory/2648-1182-0x0000000005600000-0x000000000564C000-memory.dmp

Filesize
304KB

Download
memory/2648-1183-0x00000000746AE000-0x00000000746AF000-memory.dmp

Filesize
4KB

Download
memory/2648-1184-0x00000000746A0000-0x0000000074E50000-memory.dmp

Filesize
7.7MB

Download
memory/2648-1185-0x00000000746A0000-0x0000000074E50000-memory.dmp

Filesize
7.7MB

Download
memory/2648-1186-0x0000000005F60000-0x0000000006504000-memory.dmp

Filesize
5.6MB

Download
memory/2648-1187-0x0000000005800000-0x0000000005854000-memory.dmp

Filesize
336KB

Download
memory/2648-3-0x0000000005330000-0x0000000005442000-memory.dmp

Filesize
1.1MB

Download
memory/2648-2-0x00000000746A0000-0x0000000074E50000-memory.dmp

Filesize
7.7MB

Download
memory/2648-1-0x0000000000010000-0x0000000000018000-memory.dmp

Filesize
32KB

Download
memory/2648-0-0x00000000746AE000-0x00000000746AF000-memory.dmp

Filesize
4KB

Download
memory/2648-1192-0x00000000746A0000-0x0000000074E50000-memory.dmp

Filesize
7.7MB

Download
memory/2648-1196-0x00000000746A0000-0x0000000074E50000-memory.dmp

Filesize
7.7MB

Download
memory/2648-1194-0x00000000746A0000-0x0000000074E50000-memory.dmp

Filesize
7.7MB

Download
memory/2648-1197-0x00000000746A0000-0x0000000074E50000-memory.dmp

Filesize
7.7MB

Download
memory/2648-1199-0x00000000746A0000-0x0000000074E50000-memory.dmp

Filesize
7.7MB

Download