quasar | fe89c93b688241af31c6d0e4603a354c842cbfec353dfce1dbd4561b1649988e

Analysis

max time kernel
39s
max time network
44s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
30-06-2024 15:19

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General

Target

alg.exe
Size

3.1MB
MD5

87c7c65dacaffa73b2c72c88fcd7f035
SHA1

efadd3da8ac15975e828e92b8fdd05923c8f9731
SHA256

fe89c93b688241af31c6d0e4603a354c842cbfec353dfce1dbd4561b1649988e
SHA512

f0cf89e78e97df22958e064cd5ab842be0c11adf093875af98888f62eb99b625818512359ea268f116b00c9ed3ba6199cfcb94867e7bdf154ab8ce45dc8c4c21
SSDEEP

49152:/vulL26AaNeWgPhlmVqvMQ7XSKSCRJ6ibR3LoGd2THHB72eh2NT:/veL26AaNeWgPhlmVqkQ7XSKSCRJ6c

Score

10^/10

quasar spoffer fivem spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Spoffer Fivem

pringelsy-53072.portmap.host:53072

Mutex

c70aabf1-c896-42de-8406-22e4348930d6

Attributes

encryption_key
3107DF2D44BB6914C55BEA57D100135AB0F278DF
install_name
alg.exe
log_directory
Logs
reconnect_delay
799
startup_key
Quasar Client Startup
subdirectory
Common Files

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
Quasar payload 2 IoCs

Processes:

resource yara_rule

behavioral1/memory/536-1-0x00000000001E0000-0x0000000000504000-memory.dmp family_quasar
C:\Program Files\Common Files\alg.exe family_quasar
Executes dropped EXE 1 IoCs

Processes:

alg.exe

pid process

692 alg.exe

resource	yara_rule
behavioral1/memory/536-1-0x00000000001E0000-0x0000000000504000-memory.dmp	family_quasar
C:\Program Files\Common Files\alg.exe	family_quasar

pid	process
692	alg.exe

Drops file in Program Files directory 5 IoCs

Processes:

alg.exealg.exe

description	ioc	process
File created	C:\Program Files\Common Files\alg.exe	alg.exe
File opened for modification	C:\Program Files\Common Files\alg.exe	alg.exe
File opened for modification	C:\Program Files\Common Files	alg.exe
File opened for modification	C:\Program Files\Common Files\alg.exe	alg.exe
File opened for modification	C:\Program Files\Common Files	alg.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

1064 schtasks.exe
4512 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

alg.exealg.exe

description pid process

Token: SeDebugPrivilege 536 alg.exe
Token: SeDebugPrivilege 692 alg.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

alg.exe

pid process

692 alg.exe
Suspicious use of SendNotifyMessage 1 IoCs

Processes:

alg.exe

pid process

692 alg.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

alg.exe

pid process

692 alg.exe

pid	process
1064	schtasks.exe
4512	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	536	alg.exe
Token: SeDebugPrivilege	692	alg.exe

pid	process
692	alg.exe

pid	process
692	alg.exe

pid	process
692	alg.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

alg.exealg.exe

description	pid	process	target process
PID 536 wrote to memory of 1064	536	alg.exe	schtasks.exe
PID 536 wrote to memory of 1064	536	alg.exe	schtasks.exe
PID 536 wrote to memory of 692	536	alg.exe	alg.exe
PID 536 wrote to memory of 692	536	alg.exe	alg.exe
PID 692 wrote to memory of 4512	692	alg.exe	schtasks.exe
PID 692 wrote to memory of 4512	692	alg.exe	schtasks.exe

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\alg.exe
"C:\Users\Admin\AppData\Local\Temp\alg.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:536

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Program Files\Common Files\alg.exe" /rl HIGHEST /f
2⤵
- Scheduled Task/Job: Scheduled Task
PID:1064

C:\Program Files\Common Files\alg.exe
"C:\Program Files\Common Files\alg.exe"
2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:692

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Program Files\Common Files\alg.exe" /rl HIGHEST /f
3⤵
- Scheduled Task/Job: Scheduled Task
PID:4512

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads

C:\Program Files\Common Files\alg.exe
Filesize
3.1MB

MD5
87c7c65dacaffa73b2c72c88fcd7f035

SHA1
efadd3da8ac15975e828e92b8fdd05923c8f9731

SHA256
fe89c93b688241af31c6d0e4603a354c842cbfec353dfce1dbd4561b1649988e

SHA512
f0cf89e78e97df22958e064cd5ab842be0c11adf093875af98888f62eb99b625818512359ea268f116b00c9ed3ba6199cfcb94867e7bdf154ab8ce45dc8c4c21

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\alg.exe.log
Filesize
1KB

MD5
baf55b95da4a601229647f25dad12878

SHA1
abc16954ebfd213733c4493fc1910164d825cac8

SHA256
ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924

SHA512
24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

Download Submit
memory/536-0-0x00007FF82DDE3000-0x00007FF82DDE5000-memory.dmp

Filesize
8KB

Download
memory/536-1-0x00000000001E0000-0x0000000000504000-memory.dmp

Filesize
3.1MB

Download
memory/536-2-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp

Filesize
10.8MB

Download
memory/536-10-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp

Filesize
10.8MB

Download
memory/692-11-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp

Filesize
10.8MB

Download
memory/692-12-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp

Filesize
10.8MB

Download
memory/692-13-0x000000001D6C0000-0x000000001D710000-memory.dmp

Filesize
320KB

Download
memory/692-14-0x000000001D7D0000-0x000000001D882000-memory.dmp

Filesize
712KB

Download
memory/692-15-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp

Filesize
10.8MB

Download
memory/692-16-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp

Filesize
10.8MB

Download