quasar | eebe90526e43666cbcc8e62f138cc17fb3a11e5fc6c553b1ba73361cabcd5829

General

Target

FlashingSoftwarePRO.exe
Size

3.1MB
MD5

fe32c6ee65da2e4e98d4ce1c355f55d0
SHA1

511b2e427433d6424eac156345e014df1f06dc27
SHA256

eebe90526e43666cbcc8e62f138cc17fb3a11e5fc6c553b1ba73361cabcd5829
SHA512

c17d2f342f8f28f23fe4d7f5822b6130e00e44291ffcecf4f14198cb13716d07af4724951502fb5b5f306bae91c8d8028b230b91194d7d6760db05b128243e3f
SSDEEP

49152:PvJuf2NUaNmwzPWlvdaKM7ZxTwcxDk9hGvJQLoGdTITHHB72eh2NT:Pvkf2NUaNmwzPWlvdaB7ZxTwDhV

Score

10^/10

quasar svchost discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

svchost

C2

air-specials.gl.at.ply.gg:4782

air-specials.gl.at.ply.gg:38318

Mutex

bd7b6fc7-5465-4c8c-b9fc-771a94c5bf3b

Attributes

encryption_key
BDB44181C868606DFCA1741A69056AAA62DADEFC
install_name
svchost.exe
log_directory
Logs
reconnect_delay
3000
startup_key
RuntimeBroker
subdirectory
System32

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral1/memory/3108-1-0x0000000000C60000-0x0000000000F84000-memory.dmp	family_quasar
behavioral1/files/0x0028000000046117-3.dat	family_quasar

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1798060429-1844192857-3165087720-1000\Control Panel\International\Geo\Nation	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2568	svchost.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\system32\System32\svchost.exe	FlashingSoftwarePRO.exe
File opened for modification	C:\Windows\system32\System32	FlashingSoftwarePRO.exe
File opened for modification	C:\Windows\system32\System32	svchost.exe

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

System Information Discovery
T1082

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3188	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3188	PING.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
376	schtasks.exe
2668	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3108	FlashingSoftwarePRO.exe
Token: SeDebugPrivilege	2568	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2568	svchost.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3108 wrote to memory of 376	3108	FlashingSoftwarePRO.exe	82
PID 3108 wrote to memory of 376	3108	FlashingSoftwarePRO.exe	82
PID 3108 wrote to memory of 2568	3108	FlashingSoftwarePRO.exe	84
PID 3108 wrote to memory of 2568	3108	FlashingSoftwarePRO.exe	84
PID 2568 wrote to memory of 2668	2568	svchost.exe	86
PID 2568 wrote to memory of 2668	2568	svchost.exe	86
PID 2568 wrote to memory of 3400	2568	svchost.exe	96
PID 2568 wrote to memory of 3400	2568	svchost.exe	96
PID 2568 wrote to memory of 4016	2568	svchost.exe	98
PID 2568 wrote to memory of 4016	2568	svchost.exe	98
PID 4016 wrote to memory of 2812	4016	cmd.exe	100
PID 4016 wrote to memory of 2812	4016	cmd.exe	100
PID 4016 wrote to memory of 3188	4016	cmd.exe	101
PID 4016 wrote to memory of 3188	4016	cmd.exe	101

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\FlashingSoftwarePRO.exe
"C:\Users\Admin\AppData\Local\Temp\FlashingSoftwarePRO.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3108
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "RuntimeBroker" /sc ONLOGON /tr "C:\Windows\system32\System32\svchost.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:376
- C:\Windows\system32\System32\svchost.exe
  "C:\Windows\system32\System32\svchost.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2568
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "RuntimeBroker" /sc ONLOGON /tr "C:\Windows\system32\System32\svchost.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2668
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /delete /tn "RuntimeBroker" /f
    3⤵
    PID:3400
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\UD3FPiNOfVQo.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4016
  - - C:\Windows\system32\chcp.com
      chcp 65001
      4⤵
      PID:2812
  - - C:\Windows\system32\PING.EXE
      ping -n 10 localhost
      4⤵
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:3188

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

Discovery

Query Registry

2

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\UD3FPiNOfVQo.bat

Filesize
203B

MD5
3a28ba1ffb8688388f053bf6dfdd5f77

SHA1
cfef2612b3621db8391463aa0bdbf61e927b6a5e

SHA256
4c19203406ad1edc3c3cd0712aebbcf326bb82c467c2b1ddd527f01b6eb75634

SHA512
f2887922327e36ae5a08817eab48726b7055be603ac7238726fe0de154c2f0c23a842c1a5a8fc982b7b921c6af1530a331d6f21c869a4e2ebbad81c3ada6c800

Download Submit
C:\Windows\System32\System32\svchost.exe

Filesize
3.1MB

MD5
fe32c6ee65da2e4e98d4ce1c355f55d0

SHA1
511b2e427433d6424eac156345e014df1f06dc27

SHA256
eebe90526e43666cbcc8e62f138cc17fb3a11e5fc6c553b1ba73361cabcd5829

SHA512
c17d2f342f8f28f23fe4d7f5822b6130e00e44291ffcecf4f14198cb13716d07af4724951502fb5b5f306bae91c8d8028b230b91194d7d6760db05b128243e3f

Download Submit
memory/2568-7-0x000000001C340000-0x000000001C390000-memory.dmp

Filesize
320KB

Download
memory/2568-5-0x00007FFCCDB10000-0x00007FFCCE5D2000-memory.dmp

Filesize
10.8MB

Download
memory/2568-8-0x000000001CCC0000-0x000000001CD72000-memory.dmp

Filesize
712KB

Download
memory/2568-9-0x00007FFCCDB10000-0x00007FFCCE5D2000-memory.dmp

Filesize
10.8MB

Download
memory/2568-12-0x000000001C3C0000-0x000000001C3D2000-memory.dmp

Filesize
72KB

Download
memory/2568-13-0x000000001CC40000-0x000000001CC7C000-memory.dmp

Filesize
240KB

Download
memory/2568-21-0x00007FFCCDB10000-0x00007FFCCE5D2000-memory.dmp

Filesize
10.8MB

Download
memory/3108-2-0x00007FFCCDB10000-0x00007FFCCE5D2000-memory.dmp

Filesize
10.8MB

Download
memory/3108-6-0x00007FFCCDB10000-0x00007FFCCE5D2000-memory.dmp

Filesize
10.8MB

Download
memory/3108-0-0x00007FFCCDB13000-0x00007FFCCDB15000-memory.dmp

Filesize
8KB

Download
memory/3108-1-0x0000000000C60000-0x0000000000F84000-memory.dmp

Filesize
3.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads