quasar | 4119dedd1d6408f80505394a374cde76124a736913f958c878f54c16c98986e3

General

Target

lmao.exe
Size

3.1MB
MD5

942d7d99678d584c4481278378741d51
SHA1

97efb624cfa34da0c5583e61a5982fd496de8e2d
SHA256

4119dedd1d6408f80505394a374cde76124a736913f958c878f54c16c98986e3
SHA512

0c1798628d5c90eaa6cf54277ab917408b5921e4f39ece0505510d9b7241df6748a365bc2a0a1cdaa24771f4ac56a9973a6515a0e32a14a66a9ed98c2871dfba
SSDEEP

49152:yvht62XlaSFNWPjljiFa2RoUYI4CZ1J5LoGdQPTHHB72eh2NT:yvL62XlaSFNWPjljiFXRoUYI4CT

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

4.tcp.us-cal-1.ngrok.io:18092

Mutex

11bbf22e-826e-486b-b024-adbd86228a9e

Attributes

encryption_key
7A589EDBC6A581E125BF830EF0D05FC74BB75E30
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
ctfmon
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/2412-1-0x0000000000AD0000-0x0000000000DF4000-memory.dmp	family_quasar
behavioral1/files/0x00070000000186d9-6.dat	family_quasar
behavioral1/memory/2684-10-0x0000000000CE0000-0x0000000001004000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2684	Client.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
2	4.tcp.us-cal-1.ngrok.io
10	4.tcp.us-cal-1.ngrok.io
20	4.tcp.us-cal-1.ngrok.io

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
2852	schtasks.exe
2752	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2412	lmao.exe
Token: SeDebugPrivilege	2684	Client.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2684	Client.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2684	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2684	Client.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2412 wrote to memory of 2852	2412	lmao.exe	30
PID 2412 wrote to memory of 2852	2412	lmao.exe	30
PID 2412 wrote to memory of 2852	2412	lmao.exe	30
PID 2412 wrote to memory of 2684	2412	lmao.exe	32
PID 2412 wrote to memory of 2684	2412	lmao.exe	32
PID 2412 wrote to memory of 2684	2412	lmao.exe	32
PID 2684 wrote to memory of 2752	2684	Client.exe	33
PID 2684 wrote to memory of 2752	2684	Client.exe	33
PID 2684 wrote to memory of 2752	2684	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\lmao.exe
"C:\Users\Admin\AppData\Local\Temp\lmao.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2412
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "ctfmon" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2852
- 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 SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2684
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "ctfmon" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2752

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

Web Service

1

T1102

Exfiltration

Impact

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Downloads

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

Filesize
3.1MB

MD5
942d7d99678d584c4481278378741d51

SHA1
97efb624cfa34da0c5583e61a5982fd496de8e2d

SHA256
4119dedd1d6408f80505394a374cde76124a736913f958c878f54c16c98986e3

SHA512
0c1798628d5c90eaa6cf54277ab917408b5921e4f39ece0505510d9b7241df6748a365bc2a0a1cdaa24771f4ac56a9973a6515a0e32a14a66a9ed98c2871dfba

Download Submit
memory/2412-0-0x000007FEF6BF3000-0x000007FEF6BF4000-memory.dmp

Filesize
4KB

Download
memory/2412-1-0x0000000000AD0000-0x0000000000DF4000-memory.dmp

Filesize
3.1MB

Download
memory/2412-2-0x000007FEF6BF0000-0x000007FEF75DC000-memory.dmp

Filesize
9.9MB

Download
memory/2412-8-0x000007FEF6BF0000-0x000007FEF75DC000-memory.dmp

Filesize
9.9MB

Download
memory/2684-11-0x000007FEF6BF0000-0x000007FEF75DC000-memory.dmp

Filesize
9.9MB

Download
memory/2684-10-0x0000000000CE0000-0x0000000001004000-memory.dmp

Filesize
3.1MB

Download
memory/2684-9-0x000007FEF6BF0000-0x000007FEF75DC000-memory.dmp

Filesize
9.9MB

Download
memory/2684-12-0x000007FEF6BF0000-0x000007FEF75DC000-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