quasar | 0fa8e2b1073b28e1941150d9ff1651b4dfce15cb1a0ccdcd33d5caca3af20db0

Analysis

max time kernel
33s
max time network
45s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
04-11-2024 05:07

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General

Target

Roblox exploit 2024.7z
Size

922KB
MD5

b83419ff541c2f78be5921c4c150aa2f
SHA1

2b0a73d56cf4af03d0b1eb51d7e2092f320972f0
SHA256

0fa8e2b1073b28e1941150d9ff1651b4dfce15cb1a0ccdcd33d5caca3af20db0
SHA512

d9faa15debc5bcae1d391f8cf6f713f2bf8996c64ca4b05f1bddb5f47a7c3980dbc5b784d4791f3a41739b8443fce6a224bcb7ee3654761698f02918b7c5f6a8
SSDEEP

24576:uc92iZi0TVp6x0W7GjN59lfzlPRdAeqoeTy4x3kNp6k:um2iZnV8x0W+Npko0ny1

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

Inversin-43597.portmap.host:43597

Mutex

80329fd2-f063-4b06-9c7e-8dbc6278c2a3

Attributes

encryption_key
744EA1A385FEBC6DA96387411B7000D77E66B075
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 2 IoCs

Processes:

resource	yara_rule
behavioral1/files/0x002800000004507b-3.dat	family_quasar
behavioral1/memory/272-5-0x0000000000EE0000-0x0000000001204000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

Processes:

Client-built.exeClient.exe

pid	Process
272	Client-built.exe
4828	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

Processes:

schtasks.exeschtasks.exe

pid	Process
2840	schtasks.exe
2796	schtasks.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

7zFM.exe

pid	Process
4364	7zFM.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

7zFM.exeClient-built.exeClient.exe

description	pid	Process
Token: SeRestorePrivilege	4364	7zFM.exe
Token: 35	4364	7zFM.exe
Token: SeSecurityPrivilege	4364	7zFM.exe
Token: SeDebugPrivilege	272	Client-built.exe
Token: SeDebugPrivilege	4828	Client.exe

Suspicious use of FindShellTrayWindow 7 IoCs

Processes:

7zFM.exeClient.exe

pid	Process
4364	7zFM.exe
4364	7zFM.exe
4828	Client.exe
4828	Client.exe
4828	Client.exe
4828	Client.exe
4364	7zFM.exe

Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Client.exe

pid	Process
4828	Client.exe
4828	Client.exe
4828	Client.exe
4828	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

Client-built.exeClient.exe

description	pid	Process	procid_target
PID 272 wrote to memory of 2840	272	Client-built.exe	92
PID 272 wrote to memory of 2840	272	Client-built.exe	92
PID 272 wrote to memory of 4828	272	Client-built.exe	94
PID 272 wrote to memory of 4828	272	Client-built.exe	94
PID 4828 wrote to memory of 2796	4828	Client.exe	95
PID 4828 wrote to memory of 2796	4828	Client.exe	95

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:\Program Files\7-Zip\7zFM.exe
"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\Roblox exploit 2024.7z"
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:4364

C:\Users\Admin\Desktop\Client-built.exe
"C:\Users\Admin\Desktop\Client-built.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:272
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "java updater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2840
- 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:4828
- - 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:2796

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\Desktop\Client-built.exe

Filesize
3.1MB

MD5
f5b93af3ee1b64dacd2bac9ba4af9b27

SHA1
1f2a038199a71a2b917dca4dff2f5fac5e840978

SHA256
48d4fde21b28f0614fdf124f83f5594bddc13292f21b775da58b017385a49b01

SHA512
83703b0f567723abe3d6b34bd419be5df3475e049ae8893993fec017da9a420cd875184c570bdffbfc0bccac662762991885dea8ebcc2af172b3aac2fb00a302

Download Submit
memory/272-4-0x00007FFBF8F73000-0x00007FFBF8F75000-memory.dmp

Filesize
8KB

Download
memory/272-5-0x0000000000EE0000-0x0000000001204000-memory.dmp

Filesize
3.1MB

Download
memory/272-6-0x00007FFBF8F70000-0x00007FFBF9A32000-memory.dmp

Filesize
10.8MB

Download
memory/272-9-0x00007FFBF8F70000-0x00007FFBF9A32000-memory.dmp

Filesize
10.8MB

Download
memory/4828-10-0x000000001D410000-0x000000001D460000-memory.dmp

Filesize
320KB

Download
memory/4828-11-0x000000001D520000-0x000000001D5D2000-memory.dmp

Filesize
712KB

Download
memory/4828-14-0x000000001D460000-0x000000001D472000-memory.dmp

Filesize
72KB

Download
memory/4828-15-0x000000001D4C0000-0x000000001D4FC000-memory.dmp

Filesize
240KB

Download