quasar | 963bbbdcdb92f4fade6e34bb281ccd2c1df8d58e83332ee14a7ce459748cc289

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13-11-2024 21:31

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General

Target

chrome.exe
Size

3.1MB
MD5

efcd6b93f2d85bc87ed2b3bd37320ecd
SHA1

6dd33bab1b9369ecb6de9c7b8350dd9599e859ae
SHA256

963bbbdcdb92f4fade6e34bb281ccd2c1df8d58e83332ee14a7ce459748cc289
SHA512

ce6741913619a2f433f621a99620d800079f7b3af3b2686c7edbd720c3a222615a19c98559fd0ac374f2e6db8d8ee96e16633504cca38c513a131c4f18e8cca5
SSDEEP

49152:OvHY52fyaSZOrPWluWBuGG5g5h688E9zck/gbYoGdaTHHB72eh2NT:Ov452fyaSZOrPWluWBDG5g5h68W8

Score

10^/10

quasar chrome spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Chrome

127.0.0.1:4782

Mutex

5d1e61c1-3202-4261-9b0d-c4d0dacc1152

Attributes

encryption_key
AB2A1481F7A073966DEFA41D92FDAF86B2AAA7F6
install_name
Chrome.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Chrome
subdirectory
CHrome

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
Quasar family
quasar

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/3200-1-0x0000000000F40000-0x0000000001264000-memory.dmp	family_quasar
behavioral2/files/0x000a000000023b71-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
4452	Chrome.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
1476	schtasks.exe
804	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3200	chrome.exe
Token: SeDebugPrivilege	4452	Chrome.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4452	Chrome.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
4452	Chrome.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4452	Chrome.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3200 wrote to memory of 1476	3200	chrome.exe	86
PID 3200 wrote to memory of 1476	3200	chrome.exe	86
PID 3200 wrote to memory of 4452	3200	chrome.exe	88
PID 3200 wrote to memory of 4452	3200	chrome.exe	88
PID 4452 wrote to memory of 804	4452	Chrome.exe	89
PID 4452 wrote to memory of 804	4452	Chrome.exe	89

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\chrome.exe
"C:\Users\Admin\AppData\Local\Temp\chrome.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3200
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Chrome" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\CHrome\Chrome.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1476
- C:\Users\Admin\AppData\Roaming\CHrome\Chrome.exe
  "C:\Users\Admin\AppData\Roaming\CHrome\Chrome.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:4452
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Chrome" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\CHrome\Chrome.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:804

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\Local\Microsoft\CLR_v4.0\UsageLogs\Chrome.exe.log

Filesize
1KB

MD5
baf55b95da4a601229647f25dad12878

SHA1
abc16954ebfd213733c4493fc1910164d825cac8

SHA256
ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924

SHA512
24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

Download Submit
C:\Users\Admin\AppData\Roaming\CHrome\Chrome.exe

Filesize
3.1MB

MD5
efcd6b93f2d85bc87ed2b3bd37320ecd

SHA1
6dd33bab1b9369ecb6de9c7b8350dd9599e859ae

SHA256
963bbbdcdb92f4fade6e34bb281ccd2c1df8d58e83332ee14a7ce459748cc289

SHA512
ce6741913619a2f433f621a99620d800079f7b3af3b2686c7edbd720c3a222615a19c98559fd0ac374f2e6db8d8ee96e16633504cca38c513a131c4f18e8cca5

Download Submit
memory/3200-0-0x00007FF8A8573000-0x00007FF8A8575000-memory.dmp

Filesize
8KB

Download
memory/3200-1-0x0000000000F40000-0x0000000001264000-memory.dmp

Filesize
3.1MB

Download
memory/3200-2-0x00007FF8A8570000-0x00007FF8A9031000-memory.dmp

Filesize
10.8MB

Download
memory/3200-10-0x00007FF8A8570000-0x00007FF8A9031000-memory.dmp

Filesize
10.8MB

Download
memory/4452-11-0x00007FF8A8570000-0x00007FF8A9031000-memory.dmp

Filesize
10.8MB

Download
memory/4452-12-0x00007FF8A8570000-0x00007FF8A9031000-memory.dmp

Filesize
10.8MB

Download
memory/4452-13-0x00000000028D0000-0x0000000002920000-memory.dmp

Filesize
320KB

Download
memory/4452-14-0x000000001BCA0000-0x000000001BD52000-memory.dmp

Filesize
712KB

Download
memory/4452-15-0x00007FF8A8570000-0x00007FF8A9031000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads