quasar | 5420cbc5d6be7831ccd48e8c7860f7d5c1060db80ed82063258f81c777aca8f1

Analysis

max time kernel
149s
max time network
151s
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 06:34

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General

Target

negarque.exe
Size

3.1MB
MD5

2fd750229aa6122c30607bb59293a909
SHA1

0feb9d22c13e6c2d19942788a49721db23e48d35
SHA256

5420cbc5d6be7831ccd48e8c7860f7d5c1060db80ed82063258f81c777aca8f1
SHA512

772b515f3efcff2a0fde47c125f9531d50028394a6c758e45e54743298714d118edaa94c6a67034a8a1cdce06f68342acee5b0fc0bc5ca610d28e8b8a6f52dec
SSDEEP

49152:Dvht62XlaSFNWPjljiFa2RoUYImsRJ6abR3LoGdlTHHB72eh2NT:DvL62XlaSFNWPjljiFXRoUYImsRJ60

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

0.tcp.us-cal-1.ngrok.io:11837

Mutex

11bbf22e-826e-486b-b024-adbd86228a9e

Attributes

encryption_key
7A589EDBC6A581E125BF830EF0D05FC74BB75E30
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
ctfmon
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/4700-1-0x0000000000240000-0x0000000000564000-memory.dmp	family_quasar
behavioral2/files/0x000b000000023b61-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
1992	Client.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
13	0.tcp.us-cal-1.ngrok.io
50	0.tcp.us-cal-1.ngrok.io
65	0.tcp.us-cal-1.ngrok.io

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

System Information Discovery
T1082

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
3020	schtasks.exe
2708	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4700	negarque.exe
Token: SeDebugPrivilege	1992	Client.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1992	Client.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1992	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1992	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4700 wrote to memory of 2708	4700	negarque.exe	83
PID 4700 wrote to memory of 2708	4700	negarque.exe	83
PID 4700 wrote to memory of 1992	4700	negarque.exe	85
PID 4700 wrote to memory of 1992	4700	negarque.exe	85
PID 1992 wrote to memory of 3020	1992	Client.exe	86
PID 1992 wrote to memory of 3020	1992	Client.exe	86

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\negarque.exe
"C:\Users\Admin\AppData\Local\Temp\negarque.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4700
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "ctfmon" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2708
- C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1992
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "ctfmon" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3020

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

Filesize
3.1MB

MD5
2fd750229aa6122c30607bb59293a909

SHA1
0feb9d22c13e6c2d19942788a49721db23e48d35

SHA256
5420cbc5d6be7831ccd48e8c7860f7d5c1060db80ed82063258f81c777aca8f1

SHA512
772b515f3efcff2a0fde47c125f9531d50028394a6c758e45e54743298714d118edaa94c6a67034a8a1cdce06f68342acee5b0fc0bc5ca610d28e8b8a6f52dec

Download Submit
memory/1992-10-0x00007FFCD5830000-0x00007FFCD62F1000-memory.dmp

Filesize
10.8MB

Download
memory/1992-11-0x00007FFCD5830000-0x00007FFCD62F1000-memory.dmp

Filesize
10.8MB

Download
memory/1992-12-0x000000001BFC0000-0x000000001C010000-memory.dmp

Filesize
320KB

Download
memory/1992-13-0x000000001C0D0000-0x000000001C182000-memory.dmp

Filesize
712KB

Download
memory/1992-14-0x00007FFCD5830000-0x00007FFCD62F1000-memory.dmp

Filesize
10.8MB

Download
memory/4700-0-0x00007FFCD5833000-0x00007FFCD5835000-memory.dmp

Filesize
8KB

Download
memory/4700-1-0x0000000000240000-0x0000000000564000-memory.dmp

Filesize
3.1MB

Download
memory/4700-2-0x00007FFCD5830000-0x00007FFCD62F1000-memory.dmp

Filesize
10.8MB

Download
memory/4700-9-0x00007FFCD5830000-0x00007FFCD62F1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads