quasar | b64b141eb3b3fa67f6605eb99b0e6f78eb5df7d483a2a0889821ccfac71a7a96

Analysis

max time kernel
127s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-12-2024 04:23

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General

Target

b64b141eb3b3fa67f6605eb99b0e6f78eb5df7d483a2a0889821ccfac71a7a96.exe
Size

288KB
MD5

d0d7ce7681200387de77c7ab2e2841cd
SHA1

8b6c4315e260954b6c33f450ad3baa9f79fe72e2
SHA256

b64b141eb3b3fa67f6605eb99b0e6f78eb5df7d483a2a0889821ccfac71a7a96
SHA512

bc3cfac3450cbc17ce8c9758f10c7e4034764f40a6797edd4a8eb6e95d6db9c5f46a46487a6e483ef0eed23243e9f92c0ea391a0416ebbc6854e2b9914ad9788
SSDEEP

6144:w7zO0LSclT6FOwEP5Kq+SMv0VGb7bDcllbk9n:OlJtTF9zVGkllbkh

Score

10^/10

quasar office discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.0.0

Botnet

Office

82.117.243.110:5173

Mutex

yfsS9ida0wX8mgpdJC

Attributes

encryption_key
KDNBgA8jiBeGX1rj1dDt
install_name
csrss.exe
log_directory
Logs
reconnect_delay
3000
startup_key
NET framework
subdirectory
SubDir

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/2124-1-0x0000000000E50000-0x0000000000E9E000-memory.dmp	family_quasar

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
10	ip-api.com

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	b64b141eb3b3fa67f6605eb99b0e6f78eb5df7d483a2a0889821ccfac71a7a96.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
1916	schtasks.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2124	b64b141eb3b3fa67f6605eb99b0e6f78eb5df7d483a2a0889821ccfac71a7a96.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2124	b64b141eb3b3fa67f6605eb99b0e6f78eb5df7d483a2a0889821ccfac71a7a96.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 1916	2124	b64b141eb3b3fa67f6605eb99b0e6f78eb5df7d483a2a0889821ccfac71a7a96.exe	84
PID 2124 wrote to memory of 1916	2124	b64b141eb3b3fa67f6605eb99b0e6f78eb5df7d483a2a0889821ccfac71a7a96.exe	84
PID 2124 wrote to memory of 1916	2124	b64b141eb3b3fa67f6605eb99b0e6f78eb5df7d483a2a0889821ccfac71a7a96.exe	84

C:\Users\Admin\AppData\Local\Temp\b64b141eb3b3fa67f6605eb99b0e6f78eb5df7d483a2a0889821ccfac71a7a96.exe
"C:\Users\Admin\AppData\Local\Temp\b64b141eb3b3fa67f6605eb99b0e6f78eb5df7d483a2a0889821ccfac71a7a96.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2124
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks" /create /tn "NET framework" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\b64b141eb3b3fa67f6605eb99b0e6f78eb5df7d483a2a0889821ccfac71a7a96.exe" /rl HIGHEST /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1916

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2124-0-0x0000000074B0E000-0x0000000074B0F000-memory.dmp

Filesize
4KB

Download
memory/2124-1-0x0000000000E50000-0x0000000000E9E000-memory.dmp

Filesize
312KB

Download
memory/2124-2-0x0000000005E30000-0x00000000063D4000-memory.dmp

Filesize
5.6MB

Download
memory/2124-3-0x0000000005920000-0x00000000059B2000-memory.dmp

Filesize
584KB

Download
memory/2124-4-0x0000000074B00000-0x00000000752B0000-memory.dmp

Filesize
7.7MB

Download
memory/2124-5-0x00000000059F0000-0x0000000005A56000-memory.dmp

Filesize
408KB

Download
memory/2124-6-0x0000000006700000-0x0000000006712000-memory.dmp

Filesize
72KB

Download
memory/2124-7-0x0000000006C40000-0x0000000006C7C000-memory.dmp

Filesize
240KB

Download
memory/2124-9-0x0000000006FB0000-0x0000000006FBA000-memory.dmp

Filesize
40KB

Download
memory/2124-10-0x0000000074B0E000-0x0000000074B0F000-memory.dmp

Filesize
4KB

Download
memory/2124-11-0x0000000074B00000-0x00000000752B0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads