quasar | 096f1692176785aa88872660aaefd08b995de5179f95947e3ab48e85158591af

Analysis

max time kernel
147s
max time network
150s
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 19:14

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General

Target

AAAHHHH.exe
Size

3.1MB
MD5

6088aaa8d0ba77fe7649c56226fcf79e
SHA1

43f7ac7827c3c57ac58b6093757bcaa637db7698
SHA256

096f1692176785aa88872660aaefd08b995de5179f95947e3ab48e85158591af
SHA512

c2f36efe8e5039d4c48a773c14a6925becb5ca30aaaa1d5249a4e9cc36799680e32f018d03a9ed01904751a1d15189b82eb90becc34e2aebde926ab18eb8727d
SSDEEP

49152:ov55E2VFatysqPFlLC24fdxyG5NJXheUMfcioGdEDTHHB72eh2NT:ovHE2VFatysqPFlLC2IdxyG5NJXheV

Score

10^/10

quasar minecraft_updater spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

minecraft_updater

169.254.197.237:139

192.168.7.110:139

127.0.0.1:139

0.0.0.0:139

98.97.12.133:139

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/3740-1-0x0000000000D70000-0x0000000001094000-memory.dmp	family_quasar
behavioral2/files/0x001e00000002ab3e-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3904	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
1652	schtasks.exe
3696	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3740	AAAHHHH.exe
Token: SeDebugPrivilege	3904	MinecraftUpdater.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3904	MinecraftUpdater.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3740 wrote to memory of 1652	3740	AAAHHHH.exe	78
PID 3740 wrote to memory of 1652	3740	AAAHHHH.exe	78
PID 3740 wrote to memory of 3904	3740	AAAHHHH.exe	80
PID 3740 wrote to memory of 3904	3740	AAAHHHH.exe	80
PID 3904 wrote to memory of 3696	3904	MinecraftUpdater.exe	81
PID 3904 wrote to memory of 3696	3904	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\AAAHHHH.exe
"C:\Users\Admin\AppData\Local\Temp\AAAHHHH.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3740
- 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:1652
- 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:3904
- - 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:3696

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
6088aaa8d0ba77fe7649c56226fcf79e

SHA1
43f7ac7827c3c57ac58b6093757bcaa637db7698

SHA256
096f1692176785aa88872660aaefd08b995de5179f95947e3ab48e85158591af

SHA512
c2f36efe8e5039d4c48a773c14a6925becb5ca30aaaa1d5249a4e9cc36799680e32f018d03a9ed01904751a1d15189b82eb90becc34e2aebde926ab18eb8727d

Download Submit
memory/3740-0-0x00007FF8EB653000-0x00007FF8EB655000-memory.dmp

Filesize
8KB

Download
memory/3740-1-0x0000000000D70000-0x0000000001094000-memory.dmp

Filesize
3.1MB

Download
memory/3740-2-0x00007FF8EB650000-0x00007FF8EC112000-memory.dmp

Filesize
10.8MB

Download
memory/3740-10-0x00007FF8EB650000-0x00007FF8EC112000-memory.dmp

Filesize
10.8MB

Download
memory/3904-9-0x00007FF8EB650000-0x00007FF8EC112000-memory.dmp

Filesize
10.8MB

Download
memory/3904-11-0x00007FF8EB650000-0x00007FF8EC112000-memory.dmp

Filesize
10.8MB

Download
memory/3904-12-0x000000001B140000-0x000000001B190000-memory.dmp

Filesize
320KB

Download
memory/3904-13-0x000000001BA80000-0x000000001BB32000-memory.dmp

Filesize
712KB

Download
memory/3904-14-0x00007FF8EB650000-0x00007FF8EC112000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads