quasar | abf8b023e573531ffcc497ce0141928188a1f8e29ab6e50b69fef1c59763ff97

Analysis

max time kernel
132s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-fr
resource tags

arch:x64arch:x86image:win10v2004-20241007-frlocale:fr-fros:windows10-2004-x64systemwindows
submitted
14-11-2024 18:30

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

cracked_ZaraSpoofer.exe
Size

3.1MB
MD5

5694059fd726fd2ff5687e3257092279
SHA1

aaa56d97d2bdc600aa14ac8ce894298e61dcec62
SHA256

abf8b023e573531ffcc497ce0141928188a1f8e29ab6e50b69fef1c59763ff97
SHA512

68732bba3bcdff1900d4b19b5111fa04652b3d05e3233d0161909fa9b9d380ed44e2ee96ded1a6174f33b933679eb6415cda0f33e6efc53bc86878bd6e2f78b0
SSDEEP

49152:3vrI22SsaNYfdPBldt698dBcjHJeRJ6bbR3LoGdZzZTHHB72eh2NT:3vU22SsaNYfdPBldt6+dBcjHJeRJ6t

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

192.168.1.110:4782

Mutex

2454d0cd-c644-4609-8683-6aab631f9863

Attributes

encryption_key
FD4EF95F6CB56E93508D8CA32BFC18A6C471584D
install_name
Client.exe
log_directory
Logs
reconnect_delay
50
startup_key
Quasar Client Startup
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
behavioral1/memory/4052-1-0x0000000000620000-0x0000000000944000-memory.dmp	family_quasar
behavioral1/files/0x0008000000023c97-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3324	Client.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
2364	schtasks.exe
2864	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4052	cracked_ZaraSpoofer.exe
Token: SeDebugPrivilege	3324	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3324	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4052 wrote to memory of 2864	4052	cracked_ZaraSpoofer.exe	86
PID 4052 wrote to memory of 2864	4052	cracked_ZaraSpoofer.exe	86
PID 4052 wrote to memory of 3324	4052	cracked_ZaraSpoofer.exe	88
PID 4052 wrote to memory of 3324	4052	cracked_ZaraSpoofer.exe	88
PID 3324 wrote to memory of 2364	3324	Client.exe	90
PID 3324 wrote to memory of 2364	3324	Client.exe	90

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\cracked_ZaraSpoofer.exe
"C:\Users\Admin\AppData\Local\Temp\cracked_ZaraSpoofer.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4052
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2864
- 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 SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3324
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2364

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
3.1MB

MD5
5694059fd726fd2ff5687e3257092279

SHA1
aaa56d97d2bdc600aa14ac8ce894298e61dcec62

SHA256
abf8b023e573531ffcc497ce0141928188a1f8e29ab6e50b69fef1c59763ff97

SHA512
68732bba3bcdff1900d4b19b5111fa04652b3d05e3233d0161909fa9b9d380ed44e2ee96ded1a6174f33b933679eb6415cda0f33e6efc53bc86878bd6e2f78b0

Download Submit
memory/3324-10-0x00007FFF47680000-0x00007FFF48141000-memory.dmp

Filesize
10.8MB

Download
memory/3324-11-0x00007FFF47680000-0x00007FFF48141000-memory.dmp

Filesize
10.8MB

Download
memory/3324-12-0x000000001B2A0000-0x000000001B2F0000-memory.dmp

Filesize
320KB

Download
memory/3324-13-0x000000001BB40000-0x000000001BBF2000-memory.dmp

Filesize
712KB

Download
memory/3324-14-0x00007FFF47680000-0x00007FFF48141000-memory.dmp

Filesize
10.8MB

Download
memory/4052-0-0x00007FFF47683000-0x00007FFF47685000-memory.dmp

Filesize
8KB

Download
memory/4052-1-0x0000000000620000-0x0000000000944000-memory.dmp

Filesize
3.1MB

Download
memory/4052-2-0x00007FFF47680000-0x00007FFF48141000-memory.dmp

Filesize
10.8MB

Download
memory/4052-9-0x00007FFF47680000-0x00007FFF48141000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads