quasar | 4e217e2407d26687d8d2f12ad07d7013a5c0c236db79ab72b402e7fe18b0e987

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
16-12-2024 12:01

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General

Target

4e217e2407d26687d8d2f12ad07d7013a5c0c236db79ab72b402e7fe18b0e987.exe
Size

3.1MB
MD5

cbad8ccc75f88cd7c6b5ab3ec70f2e2c
SHA1

b38fe0e24043d3867de1beac829297650c8b1fda
SHA256

4e217e2407d26687d8d2f12ad07d7013a5c0c236db79ab72b402e7fe18b0e987
SHA512

0dec15040dc1b60892ac2330a593891bb5d0e4fdf77075fdacaac9034d53cafebaff4a362236f350ae93cd67ed4a45c1dea8d75b126fc205037780b23322224c
SSDEEP

49152:KvQt62XlaSFNWPjljiFa2RoUYI1HRJ6bbR3LoGdt5ZTHHB72eh2NT:Kvc62XlaSFNWPjljiFXRoUYI1HRJ6tr

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

104.251.123.245:23600

Mutex

4119a2e0-4ae4-4843-8534-99af91a2475d

Attributes

encryption_key
DF6316067206E09C1F85138FCEBD56F5D94BF6AE
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Startup
subdirectory
SubDir

Signatures

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

Quasar payload 1 IoCs

resource	yara_rule
behavioral1/memory/2308-1-0x0000000000FF0000-0x0000000001314000-memory.dmp	family_quasar

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
588	schtasks.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2308	4e217e2407d26687d8d2f12ad07d7013a5c0c236db79ab72b402e7fe18b0e987.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2308	4e217e2407d26687d8d2f12ad07d7013a5c0c236db79ab72b402e7fe18b0e987.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2308	4e217e2407d26687d8d2f12ad07d7013a5c0c236db79ab72b402e7fe18b0e987.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2308	4e217e2407d26687d8d2f12ad07d7013a5c0c236db79ab72b402e7fe18b0e987.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2308 wrote to memory of 588	2308	4e217e2407d26687d8d2f12ad07d7013a5c0c236db79ab72b402e7fe18b0e987.exe	31
PID 2308 wrote to memory of 588	2308	4e217e2407d26687d8d2f12ad07d7013a5c0c236db79ab72b402e7fe18b0e987.exe	31
PID 2308 wrote to memory of 588	2308	4e217e2407d26687d8d2f12ad07d7013a5c0c236db79ab72b402e7fe18b0e987.exe	31

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\4e217e2407d26687d8d2f12ad07d7013a5c0c236db79ab72b402e7fe18b0e987.exe
"C:\Users\Admin\AppData\Local\Temp\4e217e2407d26687d8d2f12ad07d7013a5c0c236db79ab72b402e7fe18b0e987.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2308
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:588

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2308-0-0x000007FEF57B3000-0x000007FEF57B4000-memory.dmp

Filesize
4KB

Download
memory/2308-1-0x0000000000FF0000-0x0000000001314000-memory.dmp

Filesize
3.1MB

Download
memory/2308-2-0x000007FEF57B0000-0x000007FEF619C000-memory.dmp

Filesize
9.9MB

Download
memory/2308-3-0x000007FEF57B3000-0x000007FEF57B4000-memory.dmp

Filesize
4KB

Download
memory/2308-4-0x000007FEF57B0000-0x000007FEF619C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads