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 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 3 IoCs

resource	yara_rule
behavioral1/memory/1476-1-0x0000000001050000-0x0000000001374000-memory.dmp	family_quasar
behavioral1/files/0x001d000000016cc4-5.dat	family_quasar
behavioral1/memory/2340-7-0x0000000000D10000-0x0000000001034000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2340	svchost.exe

Drops file in System32 directory 4 IoCs

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

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
2672	schtasks.exe
2368	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1476	FlashingSoftwarePRO.exe
Token: SeDebugPrivilege	2340	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2340	svchost.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1476 wrote to memory of 2368	1476	FlashingSoftwarePRO.exe	30
PID 1476 wrote to memory of 2368	1476	FlashingSoftwarePRO.exe	30
PID 1476 wrote to memory of 2368	1476	FlashingSoftwarePRO.exe	30
PID 1476 wrote to memory of 2340	1476	FlashingSoftwarePRO.exe	32
PID 1476 wrote to memory of 2340	1476	FlashingSoftwarePRO.exe	32
PID 1476 wrote to memory of 2340	1476	FlashingSoftwarePRO.exe	32
PID 2340 wrote to memory of 2672	2340	svchost.exe	33
PID 2340 wrote to memory of 2672	2340	svchost.exe	33
PID 2340 wrote to memory of 2672	2340	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:1476
- 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:2368
- 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:2340
- - 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:2672

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

Exfiltration

Impact

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Downloads

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

Filesize
3.1MB

MD5
fe32c6ee65da2e4e98d4ce1c355f55d0

SHA1
511b2e427433d6424eac156345e014df1f06dc27

SHA256
eebe90526e43666cbcc8e62f138cc17fb3a11e5fc6c553b1ba73361cabcd5829

SHA512
c17d2f342f8f28f23fe4d7f5822b6130e00e44291ffcecf4f14198cb13716d07af4724951502fb5b5f306bae91c8d8028b230b91194d7d6760db05b128243e3f

Download Submit
memory/1476-0-0x000007FEF5E73000-0x000007FEF5E74000-memory.dmp

Filesize
4KB

Download
memory/1476-1-0x0000000001050000-0x0000000001374000-memory.dmp

Filesize
3.1MB

Download
memory/1476-2-0x000007FEF5E70000-0x000007FEF685C000-memory.dmp

Filesize
9.9MB

Download
memory/1476-8-0x000007FEF5E70000-0x000007FEF685C000-memory.dmp

Filesize
9.9MB

Download
memory/2340-7-0x0000000000D10000-0x0000000001034000-memory.dmp

Filesize
3.1MB

Download
memory/2340-9-0x000007FEF5E70000-0x000007FEF685C000-memory.dmp

Filesize
9.9MB

Download
memory/2340-10-0x000007FEF5E70000-0x000007FEF685C000-memory.dmp

Filesize
9.9MB

Download
memory/2340-11-0x000007FEF5E70000-0x000007FEF685C000-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