quasar | ffb50e35763c41066a9e59e539c4fd1dc6c8c265fe226ea816399504fc6b35ee

General

Target

tool.exe
Size

3.1MB
MD5

ea20f6c991b2a0f4dd78128337d36323
SHA1

4b558eb513af2ca5596fa74a8fe8d93eec911a36
SHA256

ffb50e35763c41066a9e59e539c4fd1dc6c8c265fe226ea816399504fc6b35ee
SHA512

a8eadc8ec65e27f95ef210d0a8ac3dcaa4be613e84b15b188817f352a5ea976923e4a615a51b70c2ab3372ad8bb002144043bd2d2deb9e355d905f2d897c10a5
SSDEEP

49152:3v2I22SsaNYfdPBldt698dBcjHkO4GdrmuvJ40oGdRflTHHB72eh2NT:3vb22SsaNYfdPBldt6+dBcjHPjmep

Score

10^/10

quasar conneceted spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

conneceted

C2

Quassar53-43603.portmap.host:43603

Mutex

8a838901-c620-4fc2-b1d4-479e4991a09c

Attributes

encryption_key
9724C7B5B016EA213AD7D853F171C6F39394F96A
install_name
six.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Runtime Broker
subdirectory
six

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral1/memory/3752-1-0x0000000000D00000-0x0000000001024000-memory.dmp	family_quasar
behavioral1/files/0x000f00000002811b-3.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2232	six.exe

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

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName	taskmgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000	taskmgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A	taskmgr.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
5628	schtasks.exe
2896	schtasks.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2972	taskmgr.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3752	tool.exe
Token: SeDebugPrivilege	2232	six.exe
Token: SeDebugPrivilege	2336	tool.exe
Token: SeDebugPrivilege	2972	taskmgr.exe
Token: SeSystemProfilePrivilege	2972	taskmgr.exe
Token: SeCreateGlobalPrivilege	2972	taskmgr.exe

Suspicious use of FindShellTrayWindow 22 IoCs

pid	Process
2232	six.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe

Suspicious use of SendNotifyMessage 22 IoCs

pid	Process
2232	six.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe
2972	taskmgr.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3752 wrote to memory of 5628	3752	tool.exe	81
PID 3752 wrote to memory of 5628	3752	tool.exe	81
PID 3752 wrote to memory of 2232	3752	tool.exe	83
PID 3752 wrote to memory of 2232	3752	tool.exe	83
PID 2232 wrote to memory of 2896	2232	six.exe	86
PID 2232 wrote to memory of 2896	2232	six.exe	86

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\tool.exe
"C:\Users\Admin\AppData\Local\Temp\tool.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3752
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Runtime Broker" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\six\six.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:5628
- C:\Users\Admin\AppData\Roaming\six\six.exe
  "C:\Users\Admin\AppData\Roaming\six\six.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2232
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Runtime Broker" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\six\six.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2896

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4152

C:\Users\Admin\AppData\Local\Temp\tool.exe
"C:\Users\Admin\AppData\Local\Temp\tool.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2336

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2972

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

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\tool.exe.log

Filesize
1KB

MD5
b08c36ce99a5ed11891ef6fc6d8647e9

SHA1
db95af417857221948eb1882e60f98ab2914bf1d

SHA256
cc9248a177495f45ec70b86c34fc5746c56730af36ace98ac7eb365dbafda674

SHA512
07e62581eace395b0a9699d727761648103180c21155d84ea09140f9e1c9690705c419118545aa67a564334bbde32710225fe3aa92b0b4b4210cb91f0058b1ea

Download Submit
C:\Users\Admin\AppData\Roaming\six\six.exe

Filesize
3.1MB

MD5
ea20f6c991b2a0f4dd78128337d36323

SHA1
4b558eb513af2ca5596fa74a8fe8d93eec911a36

SHA256
ffb50e35763c41066a9e59e539c4fd1dc6c8c265fe226ea816399504fc6b35ee

SHA512
a8eadc8ec65e27f95ef210d0a8ac3dcaa4be613e84b15b188817f352a5ea976923e4a615a51b70c2ab3372ad8bb002144043bd2d2deb9e355d905f2d897c10a5

Download Submit
memory/2232-8-0x000000001CAA0000-0x000000001CAF0000-memory.dmp

Filesize
320KB

Download
memory/2232-10-0x00007FFAB3150000-0x00007FFAB3C12000-memory.dmp

Filesize
10.8MB

Download
memory/2232-5-0x00007FFAB3150000-0x00007FFAB3C12000-memory.dmp

Filesize
10.8MB

Download
memory/2232-9-0x000000001CBB0000-0x000000001CC62000-memory.dmp

Filesize
712KB

Download
memory/2232-7-0x00007FFAB3150000-0x00007FFAB3C12000-memory.dmp

Filesize
10.8MB

Download
memory/2972-24-0x0000023984850000-0x0000023984851000-memory.dmp

Filesize
4KB

Download
memory/2972-21-0x0000023984850000-0x0000023984851000-memory.dmp

Filesize
4KB

Download
memory/2972-18-0x0000023984850000-0x0000023984851000-memory.dmp

Filesize
4KB

Download
memory/2972-19-0x0000023984850000-0x0000023984851000-memory.dmp

Filesize
4KB

Download
memory/2972-13-0x0000023984850000-0x0000023984851000-memory.dmp

Filesize
4KB

Download
memory/2972-14-0x0000023984850000-0x0000023984851000-memory.dmp

Filesize
4KB

Download
memory/2972-12-0x0000023984850000-0x0000023984851000-memory.dmp

Filesize
4KB

Download
memory/2972-20-0x0000023984850000-0x0000023984851000-memory.dmp

Filesize
4KB

Download
memory/2972-23-0x0000023984850000-0x0000023984851000-memory.dmp

Filesize
4KB

Download
memory/2972-22-0x0000023984850000-0x0000023984851000-memory.dmp

Filesize
4KB

Download
memory/3752-0-0x00007FFAB3153000-0x00007FFAB3155000-memory.dmp

Filesize
8KB

Download
memory/3752-6-0x00007FFAB3150000-0x00007FFAB3C12000-memory.dmp

Filesize
10.8MB

Download
memory/3752-1-0x0000000000D00000-0x0000000001024000-memory.dmp

Filesize
3.1MB

Download
memory/3752-2-0x00007FFAB3150000-0x00007FFAB3C12000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads