quasar | f9bf98b2e090d49b4830760b942d9208c33169ccd43814fc2a38955d74df15ab

General

Target

FlashingSoftwarePRO.exe
Size

3.1MB
MD5

c76ab36150bf9a2c72e7b1c3d2440f30
SHA1

a3719eabbb7f6da523650a9f606fda7f34f9305c
SHA256

f9bf98b2e090d49b4830760b942d9208c33169ccd43814fc2a38955d74df15ab
SHA512

c493f8553797411eefddfc4ffb448c61e3610bea9a3e774aea0048dc46359d61092b5e71bb957cdcc4affa766cb0692bbb8126e084967f00516cf66288232114
SSDEEP

49152:sv5go2QSaNpzyPllgamb0CZof/JfaN9ETJDh+ueoGdoZdTHHB72eh2NT:sv6o2QSaNpzyPllgamYCZof/JfaN6T6

Score

10^/10

quasar svchost 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

6bc3b1f8-4e29-4c42-b638-2062ec672f6f

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 3 IoCs

resource	yara_rule
behavioral1/memory/2408-1-0x0000000001280000-0x00000000015A4000-memory.dmp	family_quasar
behavioral1/files/0x0008000000016875-5.dat	family_quasar
behavioral1/memory/1712-7-0x0000000000E80000-0x00000000011A4000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
1712	svchost.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 6 IoCs

Web Service

T1102

flow	ioc
2	7.tcp.eu.ngrok.io
5	4.tcp.eu.ngrok.io
7	4.tcp.eu.ngrok.io
11	7.tcp.eu.ngrok.io
15	4.tcp.eu.ngrok.io
19	7.tcp.eu.ngrok.io

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	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
File created	C:\Windows\system32\System32\svchost.exe	FlashingSoftwarePRO.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
1416	schtasks.exe
780	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2408	FlashingSoftwarePRO.exe
Token: SeDebugPrivilege	1712	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1712	svchost.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2408 wrote to memory of 1416	2408	FlashingSoftwarePRO.exe	30
PID 2408 wrote to memory of 1416	2408	FlashingSoftwarePRO.exe	30
PID 2408 wrote to memory of 1416	2408	FlashingSoftwarePRO.exe	30
PID 2408 wrote to memory of 1712	2408	FlashingSoftwarePRO.exe	32
PID 2408 wrote to memory of 1712	2408	FlashingSoftwarePRO.exe	32
PID 2408 wrote to memory of 1712	2408	FlashingSoftwarePRO.exe	32
PID 1712 wrote to memory of 780	1712	svchost.exe	33
PID 1712 wrote to memory of 780	1712	svchost.exe	33
PID 1712 wrote to memory of 780	1712	svchost.exe	33

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:2408
- 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:1416
- C:\Windows\system32\System32\svchost.exe
  "C:\Windows\system32\System32\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1712
- - 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:780

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

1

T1012

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

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

Filesize
3.1MB

MD5
c76ab36150bf9a2c72e7b1c3d2440f30

SHA1
a3719eabbb7f6da523650a9f606fda7f34f9305c

SHA256
f9bf98b2e090d49b4830760b942d9208c33169ccd43814fc2a38955d74df15ab

SHA512
c493f8553797411eefddfc4ffb448c61e3610bea9a3e774aea0048dc46359d61092b5e71bb957cdcc4affa766cb0692bbb8126e084967f00516cf66288232114

Download Submit
memory/1712-7-0x0000000000E80000-0x00000000011A4000-memory.dmp

Filesize
3.1MB

Download
memory/1712-10-0x000007FEF52A0000-0x000007FEF5C8C000-memory.dmp

Filesize
9.9MB

Download
memory/1712-9-0x000007FEF52A0000-0x000007FEF5C8C000-memory.dmp

Filesize
9.9MB

Download
memory/1712-11-0x000007FEF52A0000-0x000007FEF5C8C000-memory.dmp

Filesize
9.9MB

Download
memory/2408-0-0x000007FEF52A3000-0x000007FEF52A4000-memory.dmp

Filesize
4KB

Download
memory/2408-1-0x0000000001280000-0x00000000015A4000-memory.dmp

Filesize
3.1MB

Download
memory/2408-2-0x000007FEF52A0000-0x000007FEF5C8C000-memory.dmp

Filesize
9.9MB

Download
memory/2408-8-0x000007FEF52A0000-0x000007FEF5C8C000-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