quasar | cc0f5f9d52d3ac24ccd19022dc321b06829989282d2203ab863318a9af4dc9d4

General

Target

WaveWindows.exe
Size

3.1MB
MD5

a95757da3319d6c993cbe1afe723a2dd
SHA1

2c5d531c008088359135f71d17ccc1438036a1a9
SHA256

cc0f5f9d52d3ac24ccd19022dc321b06829989282d2203ab863318a9af4dc9d4
SHA512

3af286fffbc38907b3c3abfc68bdcea45c1dc2592c0f773746dccec6e70e0bf280397b571f169e2bab23adc3a5d8387aefb6663a119c1346b1883690dc136218
SSDEEP

49152:fv7I22SsaNYfdPBldt698dBcjHH2RJ6QbR3LoGdhwTHHB72eh2NT:fvE22SsaNYfdPBldt6+dBcjHH2RJ6q

Score

10^/10

quasar wompwomp credential_access spyware stealer trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

wompwomp

C2

dani1023-39611.portmap.io:39611

Mutex

0d89942c-a954-4a2f-acbe-8fe1bc1a8045

Attributes

encryption_key
EF35ED3B18159C718A45B88BBAFEB8BBE615824D
install_name
VSREDIST.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Steam
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/452-1-0x0000000000ED0000-0x00000000011F4000-memory.dmp	family_quasar
behavioral2/files/0x00070000000234ed-5.dat	family_quasar

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Executes dropped EXE 1 IoCs

pid	Process
1512	VSREDIST.exe

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

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
3524	schtasks.exe
4560	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	452	WaveWindows.exe
Token: SeDebugPrivilege	1512	VSREDIST.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 452 wrote to memory of 3524	452	WaveWindows.exe	87
PID 452 wrote to memory of 3524	452	WaveWindows.exe	87
PID 452 wrote to memory of 1512	452	WaveWindows.exe	89
PID 452 wrote to memory of 1512	452	WaveWindows.exe	89
PID 1512 wrote to memory of 4560	1512	VSREDIST.exe	90
PID 1512 wrote to memory of 4560	1512	VSREDIST.exe	90

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\WaveWindows.exe
"C:\Users\Admin\AppData\Local\Temp\WaveWindows.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:452
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Steam" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\VSREDIST.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3524
- C:\Users\Admin\AppData\Roaming\SubDir\VSREDIST.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\VSREDIST.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1512
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Steam" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\VSREDIST.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4560

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

2

T1552

Credentials In Files

1

T1552.001

Credentials in Registry

1

T1552.002

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\VSREDIST.exe

Filesize
3.1MB

MD5
a95757da3319d6c993cbe1afe723a2dd

SHA1
2c5d531c008088359135f71d17ccc1438036a1a9

SHA256
cc0f5f9d52d3ac24ccd19022dc321b06829989282d2203ab863318a9af4dc9d4

SHA512
3af286fffbc38907b3c3abfc68bdcea45c1dc2592c0f773746dccec6e70e0bf280397b571f169e2bab23adc3a5d8387aefb6663a119c1346b1883690dc136218

Download Submit
memory/452-8-0x00007FFD378A0000-0x00007FFD38361000-memory.dmp

Filesize
10.8MB

Download
memory/452-1-0x0000000000ED0000-0x00000000011F4000-memory.dmp

Filesize
3.1MB

Download
memory/452-2-0x00007FFD378A0000-0x00007FFD38361000-memory.dmp

Filesize
10.8MB

Download
memory/452-0-0x00007FFD378A3000-0x00007FFD378A5000-memory.dmp

Filesize
8KB

Download
memory/1512-10-0x00007FFD378A0000-0x00007FFD38361000-memory.dmp

Filesize
10.8MB

Download
memory/1512-9-0x00007FFD378A0000-0x00007FFD38361000-memory.dmp

Filesize
10.8MB

Download
memory/1512-11-0x000000001BB40000-0x000000001BB90000-memory.dmp

Filesize
320KB

Download
memory/1512-12-0x000000001C190000-0x000000001C242000-memory.dmp

Filesize
712KB

Download
memory/1512-15-0x000000001BB90000-0x000000001BBA2000-memory.dmp

Filesize
72KB

Download
memory/1512-16-0x000000001C110000-0x000000001C14C000-memory.dmp

Filesize
240KB

Download
memory/1512-17-0x00007FFD378A0000-0x00007FFD38361000-memory.dmp

Filesize
10.8MB

Download
memory/1512-18-0x00007FFD378A0000-0x00007FFD38361000-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