quasar | 667cb53091bf9a62035df268e681af5be5c10cdc77d05c546d27aac3684a1a1d

Analysis

max time kernel
147s
max time network
151s
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 18:27

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General

Target

j.exe
Size

3.1MB
MD5

e0bb76d13de0c501243d320c86f279b2
SHA1

d8560283584c4ef6e86dcdb13edb6f5c57122c15
SHA256

667cb53091bf9a62035df268e681af5be5c10cdc77d05c546d27aac3684a1a1d
SHA512

a15d6a19b19ba8a335aff5b6a8e97af84658d52b16d74cf6a26662eff0cf0736b8cef64ae10dc0b2f09cc590fde79a9e01d885dee626047516d088fc47bb5ca3
SSDEEP

49152:fv9z92YpaQI6oPZlhP3ReybewozSRJ6ubR3LoGdcTHHB72eh2NT:fvV92YpaQI6oPZlhP3YybewozSRJ6o

Score

10^/10

quasar something cool spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

something cool

aahahaha123122-40548.portmap.host:40548

aahahaha123122-40548.portmap.host:4782

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
behavioral3/memory/2352-1-0x0000000000100000-0x0000000000424000-memory.dmp	family_quasar
behavioral3/files/0x001e00000002ab03-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2468	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
4828	schtasks.exe
3156	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2352	j.exe
Token: SeDebugPrivilege	2468	MinecraftUpdater.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2468	MinecraftUpdater.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2352 wrote to memory of 3156	2352	j.exe	78
PID 2352 wrote to memory of 3156	2352	j.exe	78
PID 2352 wrote to memory of 2468	2352	j.exe	80
PID 2352 wrote to memory of 2468	2352	j.exe	80
PID 2468 wrote to memory of 4828	2468	MinecraftUpdater.exe	81
PID 2468 wrote to memory of 4828	2468	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\j.exe
"C:\Users\Admin\AppData\Local\Temp\j.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2352
- 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:3156
- 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:2468
- - 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:4828

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
e0bb76d13de0c501243d320c86f279b2

SHA1
d8560283584c4ef6e86dcdb13edb6f5c57122c15

SHA256
667cb53091bf9a62035df268e681af5be5c10cdc77d05c546d27aac3684a1a1d

SHA512
a15d6a19b19ba8a335aff5b6a8e97af84658d52b16d74cf6a26662eff0cf0736b8cef64ae10dc0b2f09cc590fde79a9e01d885dee626047516d088fc47bb5ca3

Download Submit
memory/2352-0-0x00007FFB676F3000-0x00007FFB676F5000-memory.dmp

Filesize
8KB

Download
memory/2352-1-0x0000000000100000-0x0000000000424000-memory.dmp

Filesize
3.1MB

Download
memory/2352-2-0x00007FFB676F0000-0x00007FFB681B2000-memory.dmp

Filesize
10.8MB

Download
memory/2352-13-0x00007FFB676F0000-0x00007FFB681B2000-memory.dmp

Filesize
10.8MB

Download
memory/2468-9-0x00007FFB676F0000-0x00007FFB681B2000-memory.dmp

Filesize
10.8MB

Download
memory/2468-10-0x00007FFB676F0000-0x00007FFB681B2000-memory.dmp

Filesize
10.8MB

Download
memory/2468-11-0x000000001C830000-0x000000001C880000-memory.dmp

Filesize
320KB

Download
memory/2468-12-0x000000001C940000-0x000000001C9F2000-memory.dmp

Filesize
712KB

Download
memory/2468-14-0x00007FFB676F0000-0x00007FFB681B2000-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