quasar | 0843b3401463c5ec1d098feb0f33e90915d2a1c382fe9589f0a833b873b76e96

Analysis

max time kernel
147s
max time network
149s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
25-12-2024 19:30

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General

Target

a.exe
Size

3.1MB
MD5

23dea2d97e82e240eb41104632e0dc33
SHA1

51cd110e871d3b57a7ec26cef6cdda2d18c9a1df
SHA256

0843b3401463c5ec1d098feb0f33e90915d2a1c382fe9589f0a833b873b76e96
SHA512

c7a7c9f3cfd49ac21efeb22980c6e548316ba51818e52057febbc03d6638947f01c9bbcf3a658d71aa7be4afe56bfe5bbbde25e0ee3132351548e53e15080f55
SSDEEP

49152:DvtD/2oga6ctePEl3s3jn7HZkgl4mxmzKLoGd3uTHHB72eh2NT:DvR/2oga6ctePEl3s3L7HZkgl4m9

Score

10^/10

quasar minecraft_updater spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

minecraft_updater

desktop-ukmnq5d-tcp.at.remote.it:65535

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/1096-1-0x00000000000E0000-0x0000000000404000-memory.dmp	family_quasar
behavioral2/files/0x001a00000002ab81-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
1192	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
4600	schtasks.exe
4908	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1096	a.exe
Token: SeDebugPrivilege	1192	MinecraftUpdater.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1192	MinecraftUpdater.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1096 wrote to memory of 4600	1096	a.exe	78
PID 1096 wrote to memory of 4600	1096	a.exe	78
PID 1096 wrote to memory of 1192	1096	a.exe	80
PID 1096 wrote to memory of 1192	1096	a.exe	80
PID 1192 wrote to memory of 4908	1192	MinecraftUpdater.exe	81
PID 1192 wrote to memory of 4908	1192	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\a.exe
"C:\Users\Admin\AppData\Local\Temp\a.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1096
- 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:4600
- 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:1192
- - 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:4908

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
23dea2d97e82e240eb41104632e0dc33

SHA1
51cd110e871d3b57a7ec26cef6cdda2d18c9a1df

SHA256
0843b3401463c5ec1d098feb0f33e90915d2a1c382fe9589f0a833b873b76e96

SHA512
c7a7c9f3cfd49ac21efeb22980c6e548316ba51818e52057febbc03d6638947f01c9bbcf3a658d71aa7be4afe56bfe5bbbde25e0ee3132351548e53e15080f55

Download Submit
memory/1096-0-0x00007FFF84F13000-0x00007FFF84F15000-memory.dmp

Filesize
8KB

Download
memory/1096-1-0x00000000000E0000-0x0000000000404000-memory.dmp

Filesize
3.1MB

Download
memory/1096-2-0x00007FFF84F10000-0x00007FFF859D2000-memory.dmp

Filesize
10.8MB

Download
memory/1096-10-0x00007FFF84F10000-0x00007FFF859D2000-memory.dmp

Filesize
10.8MB

Download
memory/1192-9-0x00007FFF84F10000-0x00007FFF859D2000-memory.dmp

Filesize
10.8MB

Download
memory/1192-11-0x00007FFF84F10000-0x00007FFF859D2000-memory.dmp

Filesize
10.8MB

Download
memory/1192-12-0x00000000026D0000-0x0000000002720000-memory.dmp

Filesize
320KB

Download
memory/1192-13-0x000000001BCF0000-0x000000001BDA2000-memory.dmp

Filesize
712KB

Download
memory/1192-14-0x00007FFF84F10000-0x00007FFF859D2000-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