quasar | e3c19cd3fdd9b983f5202ac7c09873c42ce22cc4828770a1c5d8ac31efcdc676

Analysis

max time kernel
147s
max time network
92s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
26-12-2024 02:13

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General

Target

updtae.exe
Size

3.1MB
MD5

7c44cc7c86f90a8d5f3a29166e0d85b6
SHA1

e1c3402fd0e1fe1dc91d4a61029e1a871e986524
SHA256

e3c19cd3fdd9b983f5202ac7c09873c42ce22cc4828770a1c5d8ac31efcdc676
SHA512

4215cc55b74db28c43aeb233ab9f16efd2cc64e7d9a0d7d5bfb8cd4d06f922114f2400da948daba893609489512185ddc5852343e7f0eb1650b790be81355a3a
SSDEEP

49152:kv4go2QSaNpzyPllgamb0CZof/JQqxNESEpk/iPLoGdqTHHB72eh2NT:kvpo2QSaNpzyPllgamYCZof/JNxoT

Score

10^/10

quasar something cool spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

something cool

desktop-ukmnq5d-quasar-client.at.remote.it:33010

desktop-ukmnq5d-quasar-client.at.remote.it:4242

Mutex

182d06ff-972f-4a96-b344-59a01694d374

Attributes

encryption_key
C5904FDD788EA00F921C538B9FE80C0B0A0DE728
install_name
MinecraftUpdater.exe
log_directory
Logs
reconnect_delay
3000
startup_key
MinecraftUpdater
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/3108-1-0x0000000000C70000-0x0000000000F94000-memory.dmp	family_quasar
behavioral2/files/0x001c00000002aadd-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
1388	MinecraftUpdater.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
4992	schtasks.exe
5072	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3108	updtae.exe
Token: SeDebugPrivilege	1388	MinecraftUpdater.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1388	MinecraftUpdater.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3108 wrote to memory of 5072	3108	updtae.exe	77
PID 3108 wrote to memory of 5072	3108	updtae.exe	77
PID 3108 wrote to memory of 1388	3108	updtae.exe	79
PID 3108 wrote to memory of 1388	3108	updtae.exe	79
PID 1388 wrote to memory of 4992	1388	MinecraftUpdater.exe	80
PID 1388 wrote to memory of 4992	1388	MinecraftUpdater.exe	80

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\updtae.exe
"C:\Users\Admin\AppData\Local\Temp\updtae.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3108
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "MinecraftUpdater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\MinecraftUpdater.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:5072
- C:\Users\Admin\AppData\Roaming\SubDir\MinecraftUpdater.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\MinecraftUpdater.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1388
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "MinecraftUpdater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\MinecraftUpdater.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4992

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

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Downloads

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

Filesize
3.1MB

MD5
7c44cc7c86f90a8d5f3a29166e0d85b6

SHA1
e1c3402fd0e1fe1dc91d4a61029e1a871e986524

SHA256
e3c19cd3fdd9b983f5202ac7c09873c42ce22cc4828770a1c5d8ac31efcdc676

SHA512
4215cc55b74db28c43aeb233ab9f16efd2cc64e7d9a0d7d5bfb8cd4d06f922114f2400da948daba893609489512185ddc5852343e7f0eb1650b790be81355a3a

Download Submit
memory/1388-10-0x00007FF87A490000-0x00007FF87AF52000-memory.dmp

Filesize
10.8MB

Download
memory/1388-11-0x00007FF87A490000-0x00007FF87AF52000-memory.dmp

Filesize
10.8MB

Download
memory/1388-12-0x000000001BA50000-0x000000001BAA0000-memory.dmp

Filesize
320KB

Download
memory/1388-13-0x000000001C180000-0x000000001C232000-memory.dmp

Filesize
712KB

Download
memory/1388-14-0x00007FF87A490000-0x00007FF87AF52000-memory.dmp

Filesize
10.8MB

Download
memory/3108-0-0x00007FF87A493000-0x00007FF87A495000-memory.dmp

Filesize
8KB

Download
memory/3108-1-0x0000000000C70000-0x0000000000F94000-memory.dmp

Filesize
3.1MB

Download
memory/3108-2-0x00007FF87A490000-0x00007FF87AF52000-memory.dmp

Filesize
10.8MB

Download
memory/3108-9-0x00007FF87A490000-0x00007FF87AF52000-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