quasar | 532a988eeae201a337f328d2120f8af790042da93735c0fc0c17a1063fdf7f60

Analysis

max time kernel
125s
max time network
135s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25-12-2024 05:46

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General

Target

Client-built1.exe
Size

3.1MB
MD5

0213a1dc625eaf82e4d4a94ef9155eeb
SHA1

af3df68c68a7070079b123ce2f22389a5aa768df
SHA256

532a988eeae201a337f328d2120f8af790042da93735c0fc0c17a1063fdf7f60
SHA512

67277e020c3776695b2fb854e834a2850dcfd378fed62b84414ead8c1dce7d1859b2799c973f599a4661124912a49c685c8438b3df7e4012ee7777b1ce489f26
SSDEEP

49152:Wvkt62XlaSFNWPjljiFa2RoUYIAQYiimzItoGdUTHHB72eh2NT:Wv462XlaSFNWPjljiFXRoUYINYiE

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

192.168.20.5:4782

Mutex

cd5c1121-523a-481c-bbf0-684c5522dd85

Attributes

encryption_key
D49DA0049C9A948B065557C5F7F0C812465A95EA
install_name
argonui.exe
log_directory
Logs
reconnect_delay
3000
startup_key
ArgonUpdater
subdirectory
Argon

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/2700-1-0x0000000001320000-0x0000000001644000-memory.dmp	family_quasar
behavioral1/files/0x0008000000015ed2-6.dat	family_quasar
behavioral1/memory/2704-10-0x00000000009B0000-0x0000000000CD4000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2704	argonui.exe

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
2592	schtasks.exe
2724	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2700	Client-built1.exe
Token: SeDebugPrivilege	2704	argonui.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2704	argonui.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2700 wrote to memory of 2724	2700	Client-built1.exe	31
PID 2700 wrote to memory of 2724	2700	Client-built1.exe	31
PID 2700 wrote to memory of 2724	2700	Client-built1.exe	31
PID 2700 wrote to memory of 2704	2700	Client-built1.exe	33
PID 2700 wrote to memory of 2704	2700	Client-built1.exe	33
PID 2700 wrote to memory of 2704	2700	Client-built1.exe	33
PID 2704 wrote to memory of 2592	2704	argonui.exe	34
PID 2704 wrote to memory of 2592	2704	argonui.exe	34
PID 2704 wrote to memory of 2592	2704	argonui.exe	34

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\Client-built1.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built1.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2700
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "ArgonUpdater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Argon\argonui.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2724
- C:\Users\Admin\AppData\Roaming\Argon\argonui.exe
  "C:\Users\Admin\AppData\Roaming\Argon\argonui.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2704
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "ArgonUpdater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Argon\argonui.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2592

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Argon\argonui.exe

Filesize
3.1MB

MD5
0213a1dc625eaf82e4d4a94ef9155eeb

SHA1
af3df68c68a7070079b123ce2f22389a5aa768df

SHA256
532a988eeae201a337f328d2120f8af790042da93735c0fc0c17a1063fdf7f60

SHA512
67277e020c3776695b2fb854e834a2850dcfd378fed62b84414ead8c1dce7d1859b2799c973f599a4661124912a49c685c8438b3df7e4012ee7777b1ce489f26

Download Submit
memory/2700-0-0x000007FEF5BB3000-0x000007FEF5BB4000-memory.dmp

Filesize
4KB

Download
memory/2700-1-0x0000000001320000-0x0000000001644000-memory.dmp

Filesize
3.1MB

Download
memory/2700-2-0x000007FEF5BB0000-0x000007FEF659C000-memory.dmp

Filesize
9.9MB

Download
memory/2700-8-0x000007FEF5BB0000-0x000007FEF659C000-memory.dmp

Filesize
9.9MB

Download
memory/2704-9-0x000007FEF5BB0000-0x000007FEF659C000-memory.dmp

Filesize
9.9MB

Download
memory/2704-10-0x00000000009B0000-0x0000000000CD4000-memory.dmp

Filesize
3.1MB

Download
memory/2704-11-0x000007FEF5BB0000-0x000007FEF659C000-memory.dmp

Filesize
9.9MB

Download
memory/2704-12-0x000007FEF5BB0000-0x000007FEF659C000-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