quasar | cc0d6761367830ea42949aad6b71ad8c7594f3f78761729abf09c5c033eba097

General

Target

FlashingSoftwarePRO.exe
Size

3.1MB
MD5

d608c278bb35e4d55f2eeaecc8ece49d
SHA1

93370de0c6c6b4d8bffc5404c21957abef47cf89
SHA256

cc0d6761367830ea42949aad6b71ad8c7594f3f78761729abf09c5c033eba097
SHA512

be06f91ab0e0b219c533cf42e2b2bcae79decf394bb323cb95cef17684bea1159e6ef7d0afce189160ca0fee941d4f3846bdcf42630b4f0cc8c28f9b6520c5c5
SSDEEP

49152:wv5go2QSaNpzyPllgamb0CZof/JWlxNESERk/iOLoGdeGETHHB72eh2NT:wv6o2QSaNpzyPllgamYCZof/J8xAwu

Score

10^/10

quasar svchost discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

svchost

C2

7.tcp.eu.ngrok.io:10771

7.tcp.eu.ngrok.io:4782

4.tcp.eu.ngrok.io:4782

4.tcp.eu.ngrok.io:11979

4.tcp.eu.ngrok.io:12435

Mutex

4a2cf556-ea4e-4232-8c01-04513a7e9154

Attributes

encryption_key
BDB44181C868606DFCA1741A69056AAA62DADEFC
install_name
svchost.exe
log_directory
Logs
reconnect_delay
300
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/764-1-0x0000000000840000-0x0000000000B64000-memory.dmp	family_quasar
behavioral1/files/0x00280000000461a9-3.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-1-5-21-3506525125-3566313221-3651816328-1000\Control Panel\International\Geo\Nation	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1092	svchost.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
14	7.tcp.eu.ngrok.io
25	4.tcp.eu.ngrok.io

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
3972	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3972	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
1880	schtasks.exe
3948	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	764	FlashingSoftwarePRO.exe
Token: SeDebugPrivilege	1092	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1092	svchost.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 764 wrote to memory of 1880	764	FlashingSoftwarePRO.exe	84
PID 764 wrote to memory of 1880	764	FlashingSoftwarePRO.exe	84
PID 764 wrote to memory of 1092	764	FlashingSoftwarePRO.exe	86
PID 764 wrote to memory of 1092	764	FlashingSoftwarePRO.exe	86
PID 1092 wrote to memory of 3948	1092	svchost.exe	89
PID 1092 wrote to memory of 3948	1092	svchost.exe	89
PID 1092 wrote to memory of 2344	1092	svchost.exe	97
PID 1092 wrote to memory of 2344	1092	svchost.exe	97
PID 1092 wrote to memory of 468	1092	svchost.exe	99
PID 1092 wrote to memory of 468	1092	svchost.exe	99
PID 468 wrote to memory of 1828	468	cmd.exe	101
PID 468 wrote to memory of 1828	468	cmd.exe	101
PID 468 wrote to memory of 3972	468	cmd.exe	102
PID 468 wrote to memory of 3972	468	cmd.exe	102

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:764
- 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:1880
- 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:1092
- - 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:3948
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /delete /tn "RuntimeBroker" /f
    3⤵
    PID:2344
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\6JGSWDYRfAtW.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:468
  - - C:\Windows\system32\chcp.com
      chcp 65001
      4⤵
      PID:1828
  - - C:\Windows\system32\PING.EXE
      ping -n 10 localhost
      4⤵
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:3972

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

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\6JGSWDYRfAtW.bat

Filesize
203B

MD5
6aa98983eda57b0a812b789047233331

SHA1
84929ae3f75f1a016d9c06b6dd8cd869ade77878

SHA256
31dd681d04abd821479a11d0f359cdb6c3ba881760e8700bb29282dd362386d9

SHA512
c496f40cd7124801a60e7ca65d293705e911bf0bceba12e0ab77e9cb0d4bc52877fea86865552f29fcdbfbfa9c48fc3f3b93fc7f1b7abc96875745304c1d1798

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

Filesize
3.1MB

MD5
d608c278bb35e4d55f2eeaecc8ece49d

SHA1
93370de0c6c6b4d8bffc5404c21957abef47cf89

SHA256
cc0d6761367830ea42949aad6b71ad8c7594f3f78761729abf09c5c033eba097

SHA512
be06f91ab0e0b219c533cf42e2b2bcae79decf394bb323cb95cef17684bea1159e6ef7d0afce189160ca0fee941d4f3846bdcf42630b4f0cc8c28f9b6520c5c5

Download Submit
memory/764-0-0x00007FF922163000-0x00007FF922165000-memory.dmp

Filesize
8KB

Download
memory/764-1-0x0000000000840000-0x0000000000B64000-memory.dmp

Filesize
3.1MB

Download
memory/764-2-0x00007FF922160000-0x00007FF922C22000-memory.dmp

Filesize
10.8MB

Download
memory/764-6-0x00007FF922160000-0x00007FF922C22000-memory.dmp

Filesize
10.8MB

Download
memory/1092-7-0x000000001CE50000-0x000000001CEA0000-memory.dmp

Filesize
320KB

Download
memory/1092-8-0x000000001CF60000-0x000000001D012000-memory.dmp

Filesize
712KB

Download
memory/1092-9-0x00007FF922160000-0x00007FF922C22000-memory.dmp

Filesize
10.8MB

Download
memory/1092-10-0x000000001C5C0000-0x000000001C5D2000-memory.dmp

Filesize
72KB

Download
memory/1092-11-0x000000001CEE0000-0x000000001CF1C000-memory.dmp

Filesize
240KB

Download
memory/1092-5-0x00007FF922160000-0x00007FF922C22000-memory.dmp

Filesize
10.8MB

Download
memory/1092-20-0x00007FF922160000-0x00007FF922C22000-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