quasar | 38abc237a0a005086295963847b69882b9ad53b2e548696bddb5f70e5853772f

Analysis

max time kernel
147s
max time network
152s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
18-12-2024 22:48

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General

Target

run.exe
Size

3.1MB
MD5

7addbb3efb5f86150a4dc255c26096a4
SHA1

c039e2e4563d76db4c55a6a650d7f13450c1d04d
SHA256

38abc237a0a005086295963847b69882b9ad53b2e548696bddb5f70e5853772f
SHA512

9c55300fe1329746bf74b82aeb227e3065452e9afa8f990476d58e5f511fe6533ce59f61adc0e45170be2340aa96c4e3369c568105aa057c038301933461cb07
SSDEEP

49152:jvtD/2oga6ctePEl3s3jn7HZkgoAxNESEwk/ikLoGdHTHHB72eh2NT:jvR/2oga6ctePEl3s3L7HZkgnxrq

Score

10^/10

quasar minecraft_updater spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

minecraft_updater

yeswasdwasdwasd-26675.portmap.host:26675

Mutex

41d2bdc9-23fd-4d55-9a9e-6e2156bb0a9a

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/1440-1-0x0000000000820000-0x0000000000B44000-memory.dmp	family_quasar
behavioral2/files/0x001d00000002ab43-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3732	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
3012	schtasks.exe
4228	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1440	run.exe
Token: SeDebugPrivilege	3732	MinecraftUpdater.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3732	MinecraftUpdater.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1440 wrote to memory of 3012	1440	run.exe	78
PID 1440 wrote to memory of 3012	1440	run.exe	78
PID 1440 wrote to memory of 3732	1440	run.exe	80
PID 1440 wrote to memory of 3732	1440	run.exe	80
PID 3732 wrote to memory of 4228	3732	MinecraftUpdater.exe	81
PID 3732 wrote to memory of 4228	3732	MinecraftUpdater.exe	81

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\run.exe
"C:\Users\Admin\AppData\Local\Temp\run.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1440
- 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:3012
- 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:3732
- - 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:4228

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

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Downloads

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

Filesize
3.1MB

MD5
7addbb3efb5f86150a4dc255c26096a4

SHA1
c039e2e4563d76db4c55a6a650d7f13450c1d04d

SHA256
38abc237a0a005086295963847b69882b9ad53b2e548696bddb5f70e5853772f

SHA512
9c55300fe1329746bf74b82aeb227e3065452e9afa8f990476d58e5f511fe6533ce59f61adc0e45170be2340aa96c4e3369c568105aa057c038301933461cb07

Download Submit
memory/1440-0-0x00007FFDFC233000-0x00007FFDFC235000-memory.dmp

Filesize
8KB

Download
memory/1440-1-0x0000000000820000-0x0000000000B44000-memory.dmp

Filesize
3.1MB

Download
memory/1440-2-0x00007FFDFC230000-0x00007FFDFCCF2000-memory.dmp

Filesize
10.8MB

Download
memory/1440-10-0x00007FFDFC230000-0x00007FFDFCCF2000-memory.dmp

Filesize
10.8MB

Download
memory/3732-9-0x00007FFDFC230000-0x00007FFDFCCF2000-memory.dmp

Filesize
10.8MB

Download
memory/3732-11-0x00007FFDFC230000-0x00007FFDFCCF2000-memory.dmp

Filesize
10.8MB

Download
memory/3732-12-0x000000001BD70000-0x000000001BDC0000-memory.dmp

Filesize
320KB

Download
memory/3732-13-0x000000001C9D0000-0x000000001CA82000-memory.dmp

Filesize
712KB

Download
memory/3732-14-0x00007FFDFC230000-0x00007FFDFCCF2000-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