quasar | 088ef517ba0ceae09b185abde537e32974cd71a7430487be49a3e9def5f3773e

Analysis

max time kernel
109s
max time network
97s
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 21:25

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General

Target

chrome.exe
Size

3.1MB
MD5

70061253830d45573bbf477b21670335
SHA1

5af7fad701e8263cc3780a8ebf0818b661b0d0ae
SHA256

088ef517ba0ceae09b185abde537e32974cd71a7430487be49a3e9def5f3773e
SHA512

098565be30fb6861f09c0b351cc545c305ccde42d22936d5324cddf0542d3f38e0ac7decff54dd49eac1f407ab40074998986ba70ede6d45d664c8d813c8d123
SSDEEP

49152:6vHY52fyaSZOrPWluWBuGG5g5h8C+1JnPoGdIZTHHB72eh2NT:6v452fyaSZOrPWluWBDG5g5h8C6

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/1260-1-0x00000000008F0000-0x0000000000C14000-memory.dmp	family_quasar
behavioral2/files/0x0007000000023cd0-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3408	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
4824	schtasks.exe
2912	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1260	chrome.exe
Token: SeDebugPrivilege	3408	Chrome.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3408	Chrome.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
3408	Chrome.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3408	Chrome.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1260 wrote to memory of 4824	1260	chrome.exe	86
PID 1260 wrote to memory of 4824	1260	chrome.exe	86
PID 1260 wrote to memory of 3408	1260	chrome.exe	88
PID 1260 wrote to memory of 3408	1260	chrome.exe	88
PID 3408 wrote to memory of 2912	3408	Chrome.exe	92
PID 3408 wrote to memory of 2912	3408	Chrome.exe	92

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:1260
- 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:4824
- 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:3408
- - 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:2912

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
70061253830d45573bbf477b21670335

SHA1
5af7fad701e8263cc3780a8ebf0818b661b0d0ae

SHA256
088ef517ba0ceae09b185abde537e32974cd71a7430487be49a3e9def5f3773e

SHA512
098565be30fb6861f09c0b351cc545c305ccde42d22936d5324cddf0542d3f38e0ac7decff54dd49eac1f407ab40074998986ba70ede6d45d664c8d813c8d123

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memory/1260-0-0x00007FFA71813000-0x00007FFA71815000-memory.dmp

Filesize
8KB

Download
memory/1260-1-0x00000000008F0000-0x0000000000C14000-memory.dmp

Filesize
3.1MB

Download
memory/1260-2-0x00007FFA71810000-0x00007FFA722D1000-memory.dmp

Filesize
10.8MB

Download
memory/1260-11-0x00007FFA71810000-0x00007FFA722D1000-memory.dmp

Filesize
10.8MB

Download
memory/3408-10-0x00007FFA71810000-0x00007FFA722D1000-memory.dmp

Filesize
10.8MB

Download
memory/3408-12-0x00007FFA71810000-0x00007FFA722D1000-memory.dmp

Filesize
10.8MB

Download
memory/3408-13-0x000000001BC60000-0x000000001BCB0000-memory.dmp

Filesize
320KB

Download
memory/3408-14-0x000000001BD70000-0x000000001BE22000-memory.dmp

Filesize
712KB

Download
memory/3408-15-0x00007FFA71810000-0x00007FFA722D1000-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