quasar | 9365b6cee47eecc6eab2c6d138f0d5714c31ff1473143ce14ce874eb896f01b3

General

Target

0x000600000001946e-14.exe
Size

556KB
MD5

85410a49050c880d856c15b4c958d86d
SHA1

f520f25b5cd537b1060d8ca66f53bac745f8f8fa
SHA256

9365b6cee47eecc6eab2c6d138f0d5714c31ff1473143ce14ce874eb896f01b3
SHA512

94ac76b3fb61b14f39b9cc9848d530842c834ae32efede2da7c5ce3d062940a788391d7b22e888ec5b024dba7437ef043ee11554fe62509e1f71ee202791f7d5
SSDEEP

12288:QusTy3x2mUEiLYStKT7yFPb2bNRZGU6rCUk:Qq3nUIStKHIPbcNREo

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.5.0

Botnet

Office04

C2

movies-concerning.gl.at.ply.gg:12712

Mutex

5f7b0195-4eaf-4ae9-b4f8-cc2f6f6c4eb3

Attributes

encryption_key
27AAC11A05508545506D258070495FCDA9A82735
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Modded Client Startup
subdirectory
SubDir

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
Quasar family
quasar

Quasar payload 4 IoCs

resource	yara_rule
behavioral1/memory/2544-1-0x0000000000010000-0x00000000000A0000-memory.dmp	family_quasar
behavioral1/memory/2544-2-0x0000000000200000-0x0000000000218000-memory.dmp	family_quasar
behavioral1/files/0x00090000000167e3-6.dat	family_quasar
behavioral1/memory/2936-8-0x0000000000880000-0x0000000000910000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2936	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
2040	schtasks.exe
2856	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2936	Client.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2544	0x000600000001946e-14.exe
Token: SeDebugPrivilege	2936	Client.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2544 wrote to memory of 2040	2544	0x000600000001946e-14.exe	31
PID 2544 wrote to memory of 2040	2544	0x000600000001946e-14.exe	31
PID 2544 wrote to memory of 2040	2544	0x000600000001946e-14.exe	31
PID 2544 wrote to memory of 2936	2544	0x000600000001946e-14.exe	33
PID 2544 wrote to memory of 2936	2544	0x000600000001946e-14.exe	33
PID 2544 wrote to memory of 2936	2544	0x000600000001946e-14.exe	33
PID 2936 wrote to memory of 2856	2936	Client.exe	34
PID 2936 wrote to memory of 2856	2936	Client.exe	34
PID 2936 wrote to memory of 2856	2936	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\0x000600000001946e-14.exe
"C:\Users\Admin\AppData\Local\Temp\0x000600000001946e-14.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2544
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "Quasar Modded Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2040
- C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2936
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "Quasar Modded Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2856

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
556KB

MD5
85410a49050c880d856c15b4c958d86d

SHA1
f520f25b5cd537b1060d8ca66f53bac745f8f8fa

SHA256
9365b6cee47eecc6eab2c6d138f0d5714c31ff1473143ce14ce874eb896f01b3

SHA512
94ac76b3fb61b14f39b9cc9848d530842c834ae32efede2da7c5ce3d062940a788391d7b22e888ec5b024dba7437ef043ee11554fe62509e1f71ee202791f7d5

Download Submit
memory/2544-0-0x000007FEF60D3000-0x000007FEF60D4000-memory.dmp

Filesize
4KB

Download
memory/2544-1-0x0000000000010000-0x00000000000A0000-memory.dmp

Filesize
576KB

Download
memory/2544-2-0x0000000000200000-0x0000000000218000-memory.dmp

Filesize
96KB

Download
memory/2544-3-0x000007FEF60D0000-0x000007FEF6ABC000-memory.dmp

Filesize
9.9MB

Download
memory/2544-9-0x000007FEF60D0000-0x000007FEF6ABC000-memory.dmp

Filesize
9.9MB

Download
memory/2936-8-0x0000000000880000-0x0000000000910000-memory.dmp

Filesize
576KB

Download
memory/2936-10-0x000007FEF60D0000-0x000007FEF6ABC000-memory.dmp

Filesize
9.9MB

Download
memory/2936-11-0x000007FEF60D0000-0x000007FEF6ABC000-memory.dmp

Filesize
9.9MB

Download
memory/2936-12-0x0000000000800000-0x000000000084E000-memory.dmp

Filesize
312KB

Download
memory/2936-13-0x000007FEF60D0000-0x000007FEF6ABC000-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