quasar | 8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28

General

Target

8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28.exe
Size

3.1MB
MD5

1167ed297153d69816e2e8446ecc3507
SHA1

26258abcbb54f6b51b74516b9fedbbbf7c7ffbbf
SHA256

8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28
SHA512

1d1270ea6c217a27ac04b1a3dec63454f43a83f1ae86d0591868a68b1b762ac2592e71fe687751d1b8be6fbca9dd4138c1d48f16f251c0420001a44c5864ac27
SSDEEP

49152:CvvY52fyaSZOrPWluWBuGG5g5hVZ/qBxnLoGde9THHB72eh2NT:CvA52fyaSZOrPWluWBDG5g5h7/SO

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

127.0.0.1:80

Mutex

1c12234f-7765-40ab-aaf0-bb1cc31f293c

Attributes

encryption_key
D1A7DEB6F1ABF47AB3D04E42414608718783685B
install_name
000.exe
log_directory
Logs
reconnect_delay
3000
startup_key
000
subdirectory
000

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/2924-1-0x0000000000A10000-0x0000000000D34000-memory.dmp	family_quasar
behavioral2/files/0x0007000000023cb2-4.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
1692	000.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\000\000.exe	8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28.exe
File created	C:\Program Files\000\000.exe	8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28.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
3664	schtasks.exe
2572	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2924	8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28.exe
Token: SeDebugPrivilege	1692	000.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1692	000.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1692	000.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2924 wrote to memory of 3664	2924	8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28.exe	83
PID 2924 wrote to memory of 3664	2924	8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28.exe	83
PID 2924 wrote to memory of 1692	2924	8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28.exe	85
PID 2924 wrote to memory of 1692	2924	8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28.exe	85
PID 1692 wrote to memory of 2572	1692	000.exe	86
PID 1692 wrote to memory of 2572	1692	000.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\8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28.exe
"C:\Users\Admin\AppData\Local\Temp\8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2924
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "000" /sc ONLOGON /tr "C:\Program Files\000\000.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3664
- C:\Program Files\000\000.exe
  "C:\Program Files\000\000.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:1692
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "000" /sc ONLOGON /tr "C:\Program Files\000\000.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2572

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:\Program Files\000\000.exe

Filesize
3.1MB

MD5
1167ed297153d69816e2e8446ecc3507

SHA1
26258abcbb54f6b51b74516b9fedbbbf7c7ffbbf

SHA256
8e66d22baca31883f715287e49c4d505a026a78c45c213dc409e523a95aeed28

SHA512
1d1270ea6c217a27ac04b1a3dec63454f43a83f1ae86d0591868a68b1b762ac2592e71fe687751d1b8be6fbca9dd4138c1d48f16f251c0420001a44c5864ac27

Download Submit
memory/1692-8-0x00007FFD56C40000-0x00007FFD57701000-memory.dmp

Filesize
10.8MB

Download
memory/1692-10-0x00007FFD56C40000-0x00007FFD57701000-memory.dmp

Filesize
10.8MB

Download
memory/1692-11-0x000000001C260000-0x000000001C2B0000-memory.dmp

Filesize
320KB

Download
memory/1692-12-0x000000001C370000-0x000000001C422000-memory.dmp

Filesize
712KB

Download
memory/1692-13-0x00007FFD56C40000-0x00007FFD57701000-memory.dmp

Filesize
10.8MB

Download
memory/2924-0-0x00007FFD56C43000-0x00007FFD56C45000-memory.dmp

Filesize
8KB

Download
memory/2924-1-0x0000000000A10000-0x0000000000D34000-memory.dmp

Filesize
3.1MB

Download
memory/2924-2-0x00007FFD56C40000-0x00007FFD57701000-memory.dmp

Filesize
10.8MB

Download
memory/2924-9-0x00007FFD56C40000-0x00007FFD57701000-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