quasar | 09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10

General

Target

09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10.exe
Size

3.3MB
MD5

8350e37c293e2ae2e47d6ebd5500d59f
SHA1

391aab53fedd3c3425353d0042e8e3dcc3da3867
SHA256

09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10
SHA512

b71b2ba575fa296d50112c8ccfc9bf2daf294d8d62547ca7813ebbfb04d96f144aa3ad9221aa29fe5807bbb24005ebcc16a58ad9a489ba59d15bf4a09f70046a
SSDEEP

49152:4vCI22SsaNYfdPBldt698dBcjHeEXpE+LVk/tMeoGdVTHHB72eh2NTiwD:4vP22SsaNYfdPBldt6+dBcjHeEXa5NG

Score

10^/10

quasar deoxyz spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

deoxyz

C2

deoxyz1234-43577.portmap.host:43577

Mutex

ab79c5b4-561c-4221-9d19-8127b03be663

Attributes

encryption_key
71BF3C0F14270AD8DDE655D1E8D71855D54DDD5B
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
System
subdirectory
SubDir

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/2332-1-0x0000000000BA0000-0x0000000000EF2000-memory.dmp	family_quasar
behavioral1/files/0x000900000001678f-5.dat	family_quasar
behavioral1/memory/2216-9-0x0000000000E20000-0x0000000001172000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2216	Client.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
2340	schtasks.exe
2776	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2332	09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10.exe
Token: SeDebugPrivilege	2216	Client.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2216	Client.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2216	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2216	Client.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2332 wrote to memory of 2340	2332	09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10.exe	31
PID 2332 wrote to memory of 2340	2332	09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10.exe	31
PID 2332 wrote to memory of 2340	2332	09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10.exe	31
PID 2332 wrote to memory of 2216	2332	09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10.exe	33
PID 2332 wrote to memory of 2216	2332	09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10.exe	33
PID 2332 wrote to memory of 2216	2332	09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10.exe	33
PID 2216 wrote to memory of 2776	2216	Client.exe	34
PID 2216 wrote to memory of 2776	2216	Client.exe	34
PID 2216 wrote to memory of 2776	2216	Client.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\09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10.exe
"C:\Users\Admin\AppData\Local\Temp\09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2332
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "System" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2340
- C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2216
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "System" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2776

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\SubDir\Client.exe

Filesize
3.3MB

MD5
8350e37c293e2ae2e47d6ebd5500d59f

SHA1
391aab53fedd3c3425353d0042e8e3dcc3da3867

SHA256
09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10

SHA512
b71b2ba575fa296d50112c8ccfc9bf2daf294d8d62547ca7813ebbfb04d96f144aa3ad9221aa29fe5807bbb24005ebcc16a58ad9a489ba59d15bf4a09f70046a

Download Submit
memory/2216-8-0x000007FEF5D00000-0x000007FEF66EC000-memory.dmp

Filesize
9.9MB

Download
memory/2216-9-0x0000000000E20000-0x0000000001172000-memory.dmp

Filesize
3.3MB

Download
memory/2216-10-0x000007FEF5D00000-0x000007FEF66EC000-memory.dmp

Filesize
9.9MB

Download
memory/2216-11-0x000007FEF5D00000-0x000007FEF66EC000-memory.dmp

Filesize
9.9MB

Download
memory/2332-0-0x000007FEF5D03000-0x000007FEF5D04000-memory.dmp

Filesize
4KB

Download
memory/2332-1-0x0000000000BA0000-0x0000000000EF2000-memory.dmp

Filesize
3.3MB

Download
memory/2332-2-0x000007FEF5D00000-0x000007FEF66EC000-memory.dmp

Filesize
9.9MB

Download
memory/2332-7-0x000007FEF5D00000-0x000007FEF66EC000-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