quasar | 7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178

General

Target

7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.exe
Size

3.1MB
MD5

878be87c49bd5b989fbf5464d225430a
SHA1

40149c47a14f317807fa3926318c6c975bba92d8
SHA256

7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178
SHA512

9756cb149de4fbc267b82dc0a6dc0fa1724091ce04676568c1874896d4876c79533f234b74566b676edd0a3fd1a609c9e8b9530ce60bb04ce1766befadf365fe
SSDEEP

49152:iv/t62XlaSFNWPjljiFa2RoUYIg5vZEfoEkCqMZo8d1THHB72eh2NT:ivV62XlaSFNWPjljiFXRoUYIg5v30

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

havucmarul.duckdns.org:1604

Mutex

5caac049-af48-4152-a892-2f06b763f213

Attributes

encryption_key
B161C821508495BDAF45580C87E8251AF93A155C
install_name
svchost.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Services
subdirectory
Windows

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/2128-1-0x0000000000F20000-0x0000000001244000-memory.dmp	family_quasar
behavioral1/files/0x00070000000193f7-6.dat	family_quasar
behavioral1/memory/2368-8-0x0000000000C90000-0x0000000000FB4000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2368	svchost.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
2328	schtasks.exe
2844	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2128	7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.exe
Token: SeDebugPrivilege	2368	svchost.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2368	svchost.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2368	svchost.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 2328	2128	7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.exe	29
PID 2128 wrote to memory of 2328	2128	7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.exe	29
PID 2128 wrote to memory of 2328	2128	7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.exe	29
PID 2128 wrote to memory of 2368	2128	7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.exe	31
PID 2128 wrote to memory of 2368	2128	7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.exe	31
PID 2128 wrote to memory of 2368	2128	7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.exe	31
PID 2368 wrote to memory of 2844	2368	svchost.exe	32
PID 2368 wrote to memory of 2844	2368	svchost.exe	32
PID 2368 wrote to memory of 2844	2368	svchost.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\7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.exe
"C:\Users\Admin\AppData\Local\Temp\7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "Services" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows\svchost.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2328
- C:\Users\Admin\AppData\Roaming\Windows\svchost.exe
  "C:\Users\Admin\AppData\Roaming\Windows\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2368
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "Services" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows\svchost.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2844

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\Windows\svchost.exe

Filesize
3.1MB

MD5
878be87c49bd5b989fbf5464d225430a

SHA1
40149c47a14f317807fa3926318c6c975bba92d8

SHA256
7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178

SHA512
9756cb149de4fbc267b82dc0a6dc0fa1724091ce04676568c1874896d4876c79533f234b74566b676edd0a3fd1a609c9e8b9530ce60bb04ce1766befadf365fe

Download Submit
memory/2128-0-0x000007FEF5E93000-0x000007FEF5E94000-memory.dmp

Filesize
4KB

Download
memory/2128-1-0x0000000000F20000-0x0000000001244000-memory.dmp

Filesize
3.1MB

Download
memory/2128-2-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

Filesize
9.9MB

Download
memory/2128-9-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

Filesize
9.9MB

Download
memory/2368-8-0x0000000000C90000-0x0000000000FB4000-memory.dmp

Filesize
3.1MB

Download
memory/2368-10-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

Filesize
9.9MB

Download
memory/2368-11-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

Filesize
9.9MB

Download
memory/2368-12-0x000007FEF5E90000-0x000007FEF687C000-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