quasar | f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bd

General

Target

f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.exe
Size

3.1MB
MD5

fed9a2c4913364c73e04d7a2e818e5b0
SHA1

20cd6c16f76950da6cff2d638360cc4dd1959b96
SHA256

f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bd
SHA512

1484733be349db43da7eba830e130b9f3c1071982ba128536c0920eaa491339bfa30c7659a8de41c4696c784d195123d966fc1542370f831cf593dde7c7b5ffe
SSDEEP

49152:Wvht62XlaSFNWPjljiFa2RoUYIICh1JeLoGd2eTHHB72eh2NT:WvL62XlaSFNWPjljiFXRoUYIICi

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

adnan1453.duckdns.org:7000

Mutex

5dc678e1-94c3-4678-929d-93496063af39

Attributes

encryption_key
3A59215E830DCED5E8B222D0893FB53E5581C45B
install_name
System.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 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3480-1-0x0000000000DC0000-0x00000000010E4000-memory.dmp	family_quasar
behavioral2/files/0x0008000000023c01-5.dat	family_quasar

Executes dropped EXE 1 IoCs

Processes:

System.exe

pid	Process
5108	System.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

Processes:

schtasks.exeschtasks.exe

pid	Process
2420	schtasks.exe
2896	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.exeSystem.exe

description	pid	Process
Token: SeDebugPrivilege	3480	f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.exe
Token: SeDebugPrivilege	5108	System.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

System.exe

pid	Process
5108	System.exe

Suspicious use of SendNotifyMessage 1 IoCs

Processes:

System.exe

pid	Process
5108	System.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

System.exe

pid	Process
5108	System.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.exeSystem.exe

description	pid	Process	procid_target
PID 3480 wrote to memory of 2420	3480	f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.exe	85
PID 3480 wrote to memory of 2420	3480	f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.exe	85
PID 3480 wrote to memory of 5108	3480	f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.exe	87
PID 3480 wrote to memory of 5108	3480	f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.exe	87
PID 5108 wrote to memory of 2896	5108	System.exe	92
PID 5108 wrote to memory of 2896	5108	System.exe	92

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\f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.exe
"C:\Users\Admin\AppData\Local\Temp\f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3480
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "System" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\System.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2420
- C:\Users\Admin\AppData\Roaming\SubDir\System.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\System.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:5108
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "System" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\System.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2896

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\System.exe

Filesize
3.1MB

MD5
fed9a2c4913364c73e04d7a2e818e5b0

SHA1
20cd6c16f76950da6cff2d638360cc4dd1959b96

SHA256
f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bd

SHA512
1484733be349db43da7eba830e130b9f3c1071982ba128536c0920eaa491339bfa30c7659a8de41c4696c784d195123d966fc1542370f831cf593dde7c7b5ffe

Download Submit
memory/3480-0-0x00007FFC0DE63000-0x00007FFC0DE65000-memory.dmp

Filesize
8KB

Download
memory/3480-1-0x0000000000DC0000-0x00000000010E4000-memory.dmp

Filesize
3.1MB

Download
memory/3480-2-0x00007FFC0DE60000-0x00007FFC0E921000-memory.dmp

Filesize
10.8MB

Download
memory/3480-9-0x00007FFC0DE60000-0x00007FFC0E921000-memory.dmp

Filesize
10.8MB

Download
memory/5108-10-0x00007FFC0DE60000-0x00007FFC0E921000-memory.dmp

Filesize
10.8MB

Download
memory/5108-11-0x00007FFC0DE60000-0x00007FFC0E921000-memory.dmp

Filesize
10.8MB

Download
memory/5108-12-0x000000001C600000-0x000000001C650000-memory.dmp

Filesize
320KB

Download
memory/5108-13-0x000000001C710000-0x000000001C7C2000-memory.dmp

Filesize
712KB

Download
memory/5108-14-0x00007FFC0DE60000-0x00007FFC0E921000-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