quasar | eb46d0e15cd35a1864d8937e2d4df8943db939ee477e9966abe21697c5cd15bf

Analysis

max time kernel
147s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11/03/2024, 17:28

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General

Target

Client-built.exe
Size

3.1MB
MD5

8a0a8b83da8dbe8dfb6dae64556d39d7
SHA1

d3dd4e87ea883b4084240b923f2f80c9aadfed14
SHA256

eb46d0e15cd35a1864d8937e2d4df8943db939ee477e9966abe21697c5cd15bf
SHA512

6b268804a5811dfaa4476b40097c7edab76484859ac2fdfa387d94ee78ac9d9998da9eb5163495085e16ccf60f1842a895cc4c58be3faae5a5241631ad9863c7
SSDEEP

49152:/vRuf2NUaNmwzPWlvdaKM7ZxTwD3RJ6CbR3LoGdjQxTHHB72eh2NT:/vsf2NUaNmwzPWlvdaB7ZxTwD3RJ68

Score

10^/10

quasar getratted spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

GetRatted

uk2.localto.net:443

uk2.localto.net:32941

uk2.localto.net:4782

Mutex

994c2285-849b-4fdc-b619-27d9587c3b49

Attributes

encryption_key
7AE765C52213CCEA26FAE79A12777B2DAB755385
install_name
Minecraft.exe
log_directory
Steam WebHelper
reconnect_delay
3000
startup_key
Steam WebHelper
subdirectory
SubDir

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/2360-0-0x0000000000FB0000-0x00000000012D4000-memory.dmp	family_quasar
behavioral2/files/0x0008000000023215-8.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3768	Minecraft.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
4792	schtasks.exe
4384	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2360	Client-built.exe
Token: SeDebugPrivilege	3768	Minecraft.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3768	Minecraft.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2360 wrote to memory of 4792	2360	Client-built.exe	91
PID 2360 wrote to memory of 4792	2360	Client-built.exe	91
PID 2360 wrote to memory of 3768	2360	Client-built.exe	93
PID 2360 wrote to memory of 3768	2360	Client-built.exe	93
PID 3768 wrote to memory of 4384	3768	Minecraft.exe	94
PID 3768 wrote to memory of 4384	3768	Minecraft.exe	94

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\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2360
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Steam WebHelper" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Minecraft.exe" /rl HIGHEST /f
  2⤵
  - Creates scheduled task(s)
  PID:4792
- C:\Users\Admin\AppData\Roaming\SubDir\Minecraft.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Minecraft.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3768
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Steam WebHelper" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Minecraft.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:4384

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

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\Minecraft.exe

Filesize
3.1MB

MD5
8a0a8b83da8dbe8dfb6dae64556d39d7

SHA1
d3dd4e87ea883b4084240b923f2f80c9aadfed14

SHA256
eb46d0e15cd35a1864d8937e2d4df8943db939ee477e9966abe21697c5cd15bf

SHA512
6b268804a5811dfaa4476b40097c7edab76484859ac2fdfa387d94ee78ac9d9998da9eb5163495085e16ccf60f1842a895cc4c58be3faae5a5241631ad9863c7

Download Submit
memory/2360-9-0x00007FFFA0E50000-0x00007FFFA1911000-memory.dmp

Filesize
10.8MB

Download
memory/2360-2-0x0000000003410000-0x0000000003420000-memory.dmp

Filesize
64KB

Download
memory/2360-1-0x00007FFFA0E50000-0x00007FFFA1911000-memory.dmp

Filesize
10.8MB

Download
memory/2360-0-0x0000000000FB0000-0x00000000012D4000-memory.dmp

Filesize
3.1MB

Download
memory/3768-10-0x00007FFFA0E50000-0x00007FFFA1911000-memory.dmp

Filesize
10.8MB

Download
memory/3768-11-0x000000001BF10000-0x000000001BF20000-memory.dmp

Filesize
64KB

Download
memory/3768-12-0x000000001C660000-0x000000001C6B0000-memory.dmp

Filesize
320KB

Download
memory/3768-13-0x000000001C770000-0x000000001C822000-memory.dmp

Filesize
712KB

Download
memory/3768-16-0x000000001C6D0000-0x000000001C6E2000-memory.dmp

Filesize
72KB

Download
memory/3768-17-0x000000001C730000-0x000000001C76C000-memory.dmp

Filesize
240KB

Download
memory/3768-18-0x00007FFFA0E50000-0x00007FFFA1911000-memory.dmp

Filesize
10.8MB

Download
memory/3768-19-0x000000001BF10000-0x000000001BF20000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads