quasar | 808136ad53607bb49ddb6e8b812f5453b76ac03f67516e8fca307988004aa0e1

General

Target

spoofermocanici.exe
Size

3.1MB
MD5

85afad3d1ab11bde450710e04b2bc7bf
SHA1

438b38a8ccb6669af2be72948f64326a3b2e2bab
SHA256

808136ad53607bb49ddb6e8b812f5453b76ac03f67516e8fca307988004aa0e1
SHA512

570dc7aae1638c8c92029c379693353a488c8acfda0de81bce090f2542da4b56b63a4535f9f28b7a0e18c1f79e511f6030babdf89444a8f8996993216611d818
SSDEEP

49152:mvqY52fyaSZOrPWluWBuGG5g5hEilgaoGbPDsTHHB72eh2NT:mvf52fyaSZOrPWluWBDG5g5htlH

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

127.0.0:4782

Mutex

2a14aaf7-39b0-4b94-800b-6f0f7acc64fe

Attributes

encryption_key
BC1663FC1151FCE3A5D92266466BB47745C9FF47
install_name
spoofer.exe
log_directory
Logs
reconnect_delay
3000
startup_key
spoofer
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/2528-1-0x0000000000FC0000-0x00000000012E4000-memory.dmp	family_quasar
behavioral1/files/0x00070000000193f7-6.dat	family_quasar
behavioral1/memory/2412-10-0x00000000000C0000-0x00000000003E4000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2412	spoofer.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
2864	schtasks.exe
2944	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2528	spoofermocanici.exe
Token: SeDebugPrivilege	2412	spoofer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2412	spoofer.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2412	spoofer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2412	spoofer.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2528 wrote to memory of 2944	2528	spoofermocanici.exe	29
PID 2528 wrote to memory of 2944	2528	spoofermocanici.exe	29
PID 2528 wrote to memory of 2944	2528	spoofermocanici.exe	29
PID 2528 wrote to memory of 2412	2528	spoofermocanici.exe	31
PID 2528 wrote to memory of 2412	2528	spoofermocanici.exe	31
PID 2528 wrote to memory of 2412	2528	spoofermocanici.exe	31
PID 2412 wrote to memory of 2864	2412	spoofer.exe	32
PID 2412 wrote to memory of 2864	2412	spoofer.exe	32
PID 2412 wrote to memory of 2864	2412	spoofer.exe	32

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\spoofermocanici.exe
"C:\Users\Admin\AppData\Local\Temp\spoofermocanici.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2528
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "spoofer" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\spoofer.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2944
- C:\Users\Admin\AppData\Roaming\SubDir\spoofer.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\spoofer.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:2412
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "spoofer" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\spoofer.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2864

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
3.1MB

MD5
85afad3d1ab11bde450710e04b2bc7bf

SHA1
438b38a8ccb6669af2be72948f64326a3b2e2bab

SHA256
808136ad53607bb49ddb6e8b812f5453b76ac03f67516e8fca307988004aa0e1

SHA512
570dc7aae1638c8c92029c379693353a488c8acfda0de81bce090f2542da4b56b63a4535f9f28b7a0e18c1f79e511f6030babdf89444a8f8996993216611d818

Download Submit
memory/2412-8-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

Filesize
9.9MB

Download
memory/2412-10-0x00000000000C0000-0x00000000003E4000-memory.dmp

Filesize
3.1MB

Download
memory/2412-11-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

Filesize
9.9MB

Download
memory/2412-12-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

Filesize
9.9MB

Download
memory/2528-0-0x000007FEF5E93000-0x000007FEF5E94000-memory.dmp

Filesize
4KB

Download
memory/2528-1-0x0000000000FC0000-0x00000000012E4000-memory.dmp

Filesize
3.1MB

Download
memory/2528-2-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

Filesize
9.9MB

Download
memory/2528-9-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads