quasar | 300bad38953dd87cda952bb60f1999a5ea1f9c0f64a3f0f842633b982b15194b

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19-12-2024 23:55

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General

Target

Windows-Activation.exe
Size

3.1MB
MD5

ae747de0584eeab55957aa8ec12ba488
SHA1

41483b8e1ff488a546e08de74ac09300fe63c80b
SHA256

300bad38953dd87cda952bb60f1999a5ea1f9c0f64a3f0f842633b982b15194b
SHA512

f744156f05ebe0adbbe0e3973783e60e0d2b98ea8c33a147f0e1afe1cdd749b994453b7da4f8c45c73af0569453f85dacddde57820aa1f9a94e3f7350445b68c
SSDEEP

49152:evBt62XlaSFNWPjljiFa2RoUYIRetwHBxjooGd33THHB72eh2NT:evr62XlaSFNWPjljiFXRoUYIyw4

Score

10^/10

quasar svchost.exe spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Svchost.exe

192.168.1.190:4782

Mutex

75ec4d04-9201-465b-9d52-07fbf8901610

Attributes

encryption_key
BC9F0EB6E1FA6B8559DDF8DE0AEF08110EBCF8E5
install_name
Svchostt.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Svchostt.exe

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/3940-1-0x00000000008D0000-0x0000000000BF4000-memory.dmp	family_quasar
behavioral2/files/0x0008000000023c94-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3468	Svchostt.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\system32\Svchostt.exe	Windows-Activation.exe
File opened for modification	C:\Windows\system32\Svchostt.exe	Windows-Activation.exe
File opened for modification	C:\Windows\system32\Svchostt.exe	Svchostt.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
1044	schtasks.exe
3096	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3940	Windows-Activation.exe
Token: SeDebugPrivilege	3468	Svchostt.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3468	Svchostt.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3940 wrote to memory of 1044	3940	Windows-Activation.exe	83
PID 3940 wrote to memory of 1044	3940	Windows-Activation.exe	83
PID 3940 wrote to memory of 3468	3940	Windows-Activation.exe	85
PID 3940 wrote to memory of 3468	3940	Windows-Activation.exe	85
PID 3468 wrote to memory of 3096	3468	Svchostt.exe	86
PID 3468 wrote to memory of 3096	3468	Svchostt.exe	86

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\Windows-Activation.exe
"C:\Users\Admin\AppData\Local\Temp\Windows-Activation.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3940
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Svchostt.exe" /sc ONLOGON /tr "C:\Windows\system32\Svchostt.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1044
- C:\Windows\system32\Svchostt.exe
  "C:\Windows\system32\Svchostt.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3468
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "Svchostt.exe" /sc ONLOGON /tr "C:\Windows\system32\Svchostt.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3096

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

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Downloads

C:\Windows\System32\Svchostt.exe

Filesize
3.1MB

MD5
ae747de0584eeab55957aa8ec12ba488

SHA1
41483b8e1ff488a546e08de74ac09300fe63c80b

SHA256
300bad38953dd87cda952bb60f1999a5ea1f9c0f64a3f0f842633b982b15194b

SHA512
f744156f05ebe0adbbe0e3973783e60e0d2b98ea8c33a147f0e1afe1cdd749b994453b7da4f8c45c73af0569453f85dacddde57820aa1f9a94e3f7350445b68c

Download Submit
memory/3468-9-0x00007FFD0BD50000-0x00007FFD0C811000-memory.dmp

Filesize
10.8MB

Download
memory/3468-11-0x00007FFD0BD50000-0x00007FFD0C811000-memory.dmp

Filesize
10.8MB

Download
memory/3468-12-0x000000001BA00000-0x000000001BA50000-memory.dmp

Filesize
320KB

Download
memory/3468-13-0x000000001C330000-0x000000001C3E2000-memory.dmp

Filesize
712KB

Download
memory/3468-14-0x00007FFD0BD50000-0x00007FFD0C811000-memory.dmp

Filesize
10.8MB

Download
memory/3940-0-0x00007FFD0BD53000-0x00007FFD0BD55000-memory.dmp

Filesize
8KB

Download
memory/3940-1-0x00000000008D0000-0x0000000000BF4000-memory.dmp

Filesize
3.1MB

Download
memory/3940-2-0x00007FFD0BD50000-0x00007FFD0C811000-memory.dmp

Filesize
10.8MB

Download
memory/3940-10-0x00007FFD0BD50000-0x00007FFD0C811000-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