quasar | 0ffa441a13f140ff08492899f44d4d30288f193e68a1affcc0d62e617d1532cd

General

Target

0ffa441a13f140ff08492899f44d4d30288f193e68a1affcc0d62e617d1532cd.exe
Size

502KB
MD5

aebbee96c927750b5c6eec97940acc19
SHA1

fea20780c2b137ecea31544aa089f67ba4672ffd
SHA256

0ffa441a13f140ff08492899f44d4d30288f193e68a1affcc0d62e617d1532cd
SHA512

8f865a6381329cfcf5715366de9a6cce6fbb83b02643b816ea78cfe8f31b5b67bea4bce0b25d181268c3637853137f2b866f407047a5d66575c90547ccdd9af0
SSDEEP

6144:hTEgdc0Y2X7IxUpGREW8MIdTEDdKbDkQfocEiOb8F9rd9wkbIcTR3C:hTEgdfYXxUe2DkSpxwkbIcdC

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.0

Botnet

Office04

C2

93.177.102.208:1337

Mutex

b1f80fe6-27eb-4a1c-bb91-851d5cd8d500

Attributes

encryption_key
9C554DBE5929DA2C3E389A9DF35A30153D68038C
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Java Updater
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/2628-1-0x0000000000E60000-0x0000000000EE4000-memory.dmp	family_quasar
behavioral1/memory/1752-7-0x00000000008E0000-0x0000000000964000-memory.dmp	family_quasar
behavioral1/files/0x0009000000015d2a-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
1752	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
1736	schtasks.exe
2780	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2628	0ffa441a13f140ff08492899f44d4d30288f193e68a1affcc0d62e617d1532cd.exe
Token: SeDebugPrivilege	1752	Client.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1752	Client.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1752	Client.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2628 wrote to memory of 1736	2628	0ffa441a13f140ff08492899f44d4d30288f193e68a1affcc0d62e617d1532cd.exe	30
PID 2628 wrote to memory of 1736	2628	0ffa441a13f140ff08492899f44d4d30288f193e68a1affcc0d62e617d1532cd.exe	30
PID 2628 wrote to memory of 1736	2628	0ffa441a13f140ff08492899f44d4d30288f193e68a1affcc0d62e617d1532cd.exe	30
PID 2628 wrote to memory of 1752	2628	0ffa441a13f140ff08492899f44d4d30288f193e68a1affcc0d62e617d1532cd.exe	32
PID 2628 wrote to memory of 1752	2628	0ffa441a13f140ff08492899f44d4d30288f193e68a1affcc0d62e617d1532cd.exe	32
PID 2628 wrote to memory of 1752	2628	0ffa441a13f140ff08492899f44d4d30288f193e68a1affcc0d62e617d1532cd.exe	32
PID 1752 wrote to memory of 2780	1752	Client.exe	33
PID 1752 wrote to memory of 2780	1752	Client.exe	33
PID 1752 wrote to memory of 2780	1752	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\0ffa441a13f140ff08492899f44d4d30288f193e68a1affcc0d62e617d1532cd.exe
"C:\Users\Admin\AppData\Local\Temp\0ffa441a13f140ff08492899f44d4d30288f193e68a1affcc0d62e617d1532cd.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2628
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "Java Updater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\0ffa441a13f140ff08492899f44d4d30288f193e68a1affcc0d62e617d1532cd.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1736
- 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 WriteProcessMemory
  PID:1752
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "Java Updater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2780

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
502KB

MD5
aebbee96c927750b5c6eec97940acc19

SHA1
fea20780c2b137ecea31544aa089f67ba4672ffd

SHA256
0ffa441a13f140ff08492899f44d4d30288f193e68a1affcc0d62e617d1532cd

SHA512
8f865a6381329cfcf5715366de9a6cce6fbb83b02643b816ea78cfe8f31b5b67bea4bce0b25d181268c3637853137f2b866f407047a5d66575c90547ccdd9af0

Download Submit
memory/1752-7-0x00000000008E0000-0x0000000000964000-memory.dmp

Filesize
528KB

Download
memory/1752-8-0x000007FEF55E0000-0x000007FEF5FCC000-memory.dmp

Filesize
9.9MB

Download
memory/1752-10-0x000007FEF55E0000-0x000007FEF5FCC000-memory.dmp

Filesize
9.9MB

Download
memory/1752-11-0x000007FEF55E0000-0x000007FEF5FCC000-memory.dmp

Filesize
9.9MB

Download
memory/1752-12-0x000007FEF55E0000-0x000007FEF5FCC000-memory.dmp

Filesize
9.9MB

Download
memory/2628-0-0x000007FEF55E3000-0x000007FEF55E4000-memory.dmp

Filesize
4KB

Download
memory/2628-1-0x0000000000E60000-0x0000000000EE4000-memory.dmp

Filesize
528KB

Download
memory/2628-2-0x000007FEF55E0000-0x000007FEF5FCC000-memory.dmp

Filesize
9.9MB

Download
memory/2628-9-0x000007FEF55E0000-0x000007FEF5FCC000-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