quasar | 6d47dc0e0136fd3d0fa3d604727ef9302a55405a14edfbc2e6070ad547290237

General

Target

6d47dc0e0136fd3d0fa3d604727ef9302a55405a14edfbc2e6070ad547290237N.exe
Size

3.1MB
MD5

c9b1b0f1caf30d788f7d5e8e7bbf2630
SHA1

0701ea60ddd7fb7cc4b86722562313bf340632a9
SHA256

6d47dc0e0136fd3d0fa3d604727ef9302a55405a14edfbc2e6070ad547290237
SHA512

82bda10e77e1977b9afbb77c1c6ce4884c20e0e3cc28894a8990131773a6d58c3896f6ba0bc4386eea3fc05d486f83c20caa30b7a2ae503fd9b90df2c929d3ed
SSDEEP

49152:Svht62XlaSFNWPjljiFa2RoUYIQv7RBBxihoGdtJTHHB72eh2NT:SvL62XlaSFNWPjljiFXRoUYIIRK

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.168.1.125:4782

Mutex

18900002-3d71-4d3d-a3e4-f1b8ae453173

Attributes

encryption_key
F964335D77161C935F99410F722D66D3032FFF56
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
client
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/1972-1-0x0000000000E30000-0x0000000001154000-memory.dmp	family_quasar
behavioral1/files/0x0008000000016c9d-6.dat	family_quasar
behavioral1/memory/2032-8-0x00000000000D0000-0x00000000003F4000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2032	Client.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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
3024	schtasks.exe
1428	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1972	6d47dc0e0136fd3d0fa3d604727ef9302a55405a14edfbc2e6070ad547290237N.exe
Token: SeDebugPrivilege	2032	Client.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2032	Client.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2032	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2032	Client.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 3024	1972	6d47dc0e0136fd3d0fa3d604727ef9302a55405a14edfbc2e6070ad547290237N.exe	30
PID 1972 wrote to memory of 3024	1972	6d47dc0e0136fd3d0fa3d604727ef9302a55405a14edfbc2e6070ad547290237N.exe	30
PID 1972 wrote to memory of 3024	1972	6d47dc0e0136fd3d0fa3d604727ef9302a55405a14edfbc2e6070ad547290237N.exe	30
PID 1972 wrote to memory of 2032	1972	6d47dc0e0136fd3d0fa3d604727ef9302a55405a14edfbc2e6070ad547290237N.exe	32
PID 1972 wrote to memory of 2032	1972	6d47dc0e0136fd3d0fa3d604727ef9302a55405a14edfbc2e6070ad547290237N.exe	32
PID 1972 wrote to memory of 2032	1972	6d47dc0e0136fd3d0fa3d604727ef9302a55405a14edfbc2e6070ad547290237N.exe	32
PID 2032 wrote to memory of 1428	2032	Client.exe	33
PID 2032 wrote to memory of 1428	2032	Client.exe	33
PID 2032 wrote to memory of 1428	2032	Client.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\6d47dc0e0136fd3d0fa3d604727ef9302a55405a14edfbc2e6070ad547290237N.exe
"C:\Users\Admin\AppData\Local\Temp\6d47dc0e0136fd3d0fa3d604727ef9302a55405a14edfbc2e6070ad547290237N.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1972
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "client" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3024
- 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:2032
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "client" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1428

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

Filesize
3.1MB

MD5
c9b1b0f1caf30d788f7d5e8e7bbf2630

SHA1
0701ea60ddd7fb7cc4b86722562313bf340632a9

SHA256
6d47dc0e0136fd3d0fa3d604727ef9302a55405a14edfbc2e6070ad547290237

SHA512
82bda10e77e1977b9afbb77c1c6ce4884c20e0e3cc28894a8990131773a6d58c3896f6ba0bc4386eea3fc05d486f83c20caa30b7a2ae503fd9b90df2c929d3ed

Download Submit
memory/1972-0-0x000007FEF5463000-0x000007FEF5464000-memory.dmp

Filesize
4KB

Download
memory/1972-1-0x0000000000E30000-0x0000000001154000-memory.dmp

Filesize
3.1MB

Download
memory/1972-2-0x000007FEF5460000-0x000007FEF5E4C000-memory.dmp

Filesize
9.9MB

Download
memory/1972-9-0x000007FEF5460000-0x000007FEF5E4C000-memory.dmp

Filesize
9.9MB

Download
memory/2032-8-0x00000000000D0000-0x00000000003F4000-memory.dmp

Filesize
3.1MB

Download
memory/2032-11-0x000007FEF5460000-0x000007FEF5E4C000-memory.dmp

Filesize
9.9MB

Download
memory/2032-10-0x000007FEF5460000-0x000007FEF5E4C000-memory.dmp

Filesize
9.9MB

Download
memory/2032-12-0x000007FEF5460000-0x000007FEF5E4C000-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