quasar | f6a0a782d574de811fe66ecf6416c69b486f9ca20faf96cfc863a00063306338

General

Target

b94af11cca65c557d23559e978a49d18.exe
Size

3.1MB
MD5

b94af11cca65c557d23559e978a49d18
SHA1

0c3436d0c5df8e2e39bf4869bbe4413ca8d594b7
SHA256

f6a0a782d574de811fe66ecf6416c69b486f9ca20faf96cfc863a00063306338
SHA512

c1254360b2382957f043b8edcf36b28f13a93d0860dc9609d9b46eded81bc004e4149113e9eaad8b4d2cc18164942588bd4e97ecd8fce4f9afd8e537bc668b16
SSDEEP

49152:PvSI22SsaNYfdPBldt698dBcjHNGRJ67bR3LoGdGH3THHB72eh2NT:Pv/22SsaNYfdPBldt6+dBcjHNGRJ6N

Score

10^/10

quasar 28 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

28

C2

194.26.192.167:2768

Mutex

859d5f90-e2d0-4b2d-ba9f-5371df032ec2

Attributes

encryption_key
BE2B0B270E4DB19CAA5C42E9D2EBF64645A2D055
install_name
RuntimeBroker.exe
log_directory
Logs
reconnect_delay
3000
startup_key
RuntimeBroker
subdirectory
RuntimeBroker

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/2356-1-0x0000000001110000-0x0000000001434000-memory.dmp	family_quasar
behavioral1/files/0x00090000000167e3-6.dat	family_quasar
behavioral1/memory/588-8-0x0000000000AC0000-0x0000000000DE4000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
588	RuntimeBroker.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
2036	schtasks.exe
2844	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2356	b94af11cca65c557d23559e978a49d18.exe
Token: SeDebugPrivilege	588	RuntimeBroker.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
588	RuntimeBroker.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2356 wrote to memory of 2036	2356	b94af11cca65c557d23559e978a49d18.exe	31
PID 2356 wrote to memory of 2036	2356	b94af11cca65c557d23559e978a49d18.exe	31
PID 2356 wrote to memory of 2036	2356	b94af11cca65c557d23559e978a49d18.exe	31
PID 2356 wrote to memory of 588	2356	b94af11cca65c557d23559e978a49d18.exe	33
PID 2356 wrote to memory of 588	2356	b94af11cca65c557d23559e978a49d18.exe	33
PID 2356 wrote to memory of 588	2356	b94af11cca65c557d23559e978a49d18.exe	33
PID 588 wrote to memory of 2844	588	RuntimeBroker.exe	34
PID 588 wrote to memory of 2844	588	RuntimeBroker.exe	34
PID 588 wrote to memory of 2844	588	RuntimeBroker.exe	34

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\b94af11cca65c557d23559e978a49d18.exe
"C:\Users\Admin\AppData\Local\Temp\b94af11cca65c557d23559e978a49d18.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2356
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "RuntimeBroker" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\RuntimeBroker\RuntimeBroker.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2036
- C:\Users\Admin\AppData\Roaming\RuntimeBroker\RuntimeBroker.exe
  "C:\Users\Admin\AppData\Roaming\RuntimeBroker\RuntimeBroker.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:588
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "RuntimeBroker" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\RuntimeBroker\RuntimeBroker.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2844

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:\Users\Admin\AppData\Roaming\RuntimeBroker\RuntimeBroker.exe

Filesize
3.1MB

MD5
b94af11cca65c557d23559e978a49d18

SHA1
0c3436d0c5df8e2e39bf4869bbe4413ca8d594b7

SHA256
f6a0a782d574de811fe66ecf6416c69b486f9ca20faf96cfc863a00063306338

SHA512
c1254360b2382957f043b8edcf36b28f13a93d0860dc9609d9b46eded81bc004e4149113e9eaad8b4d2cc18164942588bd4e97ecd8fce4f9afd8e537bc668b16

Download Submit
memory/588-8-0x0000000000AC0000-0x0000000000DE4000-memory.dmp

Filesize
3.1MB

Download
memory/588-11-0x000007FEF60D0000-0x000007FEF6ABC000-memory.dmp

Filesize
9.9MB

Download
memory/588-10-0x000007FEF60D0000-0x000007FEF6ABC000-memory.dmp

Filesize
9.9MB

Download
memory/588-12-0x000007FEF60D0000-0x000007FEF6ABC000-memory.dmp

Filesize
9.9MB

Download
memory/2356-0-0x000007FEF60D3000-0x000007FEF60D4000-memory.dmp

Filesize
4KB

Download
memory/2356-1-0x0000000001110000-0x0000000001434000-memory.dmp

Filesize
3.1MB

Download
memory/2356-2-0x000007FEF60D0000-0x000007FEF6ABC000-memory.dmp

Filesize
9.9MB

Download
memory/2356-9-0x000007FEF60D0000-0x000007FEF6ABC000-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