quasar | 9618961af8c6db27588c649679634bec7ece8fabd3e48f02f33ac0b837b56d2e

Analysis

max time kernel
143s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
15-07-2024 16:14

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General

Target

zvgfd-main/Uni.exe
Size

409KB
MD5

63406415832d298e8419d037141b99a5
SHA1

e8269627e0605dd626494dc50dbba8c7a5a19fa9
SHA256

171e372c9879e2396f14cc0b1388c129a1c8c2d526f74cdd6c18822dfc8f3eae
SHA512

6a4f7026cf6702b3c75a144deb8ea31ee65842eaefa9eb2a1c5254053654666b255105f01ad81dbee8268ee983c1e1ea0980f40a2f29e3e784fed87efc09366f
SSDEEP

12288:VpbJjGuHOGpmeptoiwkZvaXlrWYveGTzse:LVau8ez0dpT/

Score

10^/10

quasar slave spyware trojan

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

Slave

127.0.0.1:4480

192.168.1.120:4480

75.24.104.157:4480

Mutex

$Sxr-kl1r656AGsPQksTmi8

Attributes

encryption_key
2jMDCHsKUAA3I4prFbxo
install_name
$77-LogAGI.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Update
subdirectory
77-Recovery

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral20/memory/4024-1-0x0000000000EE0000-0x0000000000F4C000-memory.dmp	family_quasar
behavioral20/files/0x00090000000234ad-11.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3364	$77-LogAGI.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
11	ip-api.com

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\77-Recovery\$77-LogAGI.exe	Uni.exe
File opened for modification	C:\Windows\SysWOW64\77-Recovery\$77-LogAGI.exe	Uni.exe
File opened for modification	C:\Windows\SysWOW64\77-Recovery\$77-LogAGI.exe	$77-LogAGI.exe
File opened for modification	C:\Windows\SysWOW64\77-Recovery	$77-LogAGI.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2288	schtasks.exe
2368	schtasks.exe
4820	SCHTASKS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4024	Uni.exe
Token: SeDebugPrivilege	3364	$77-LogAGI.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3364	$77-LogAGI.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4024 wrote to memory of 2288	4024	Uni.exe	85
PID 4024 wrote to memory of 2288	4024	Uni.exe	85
PID 4024 wrote to memory of 2288	4024	Uni.exe	85
PID 4024 wrote to memory of 3364	4024	Uni.exe	87
PID 4024 wrote to memory of 3364	4024	Uni.exe	87
PID 4024 wrote to memory of 3364	4024	Uni.exe	87
PID 3364 wrote to memory of 2368	3364	$77-LogAGI.exe	88
PID 3364 wrote to memory of 2368	3364	$77-LogAGI.exe	88
PID 3364 wrote to memory of 2368	3364	$77-LogAGI.exe	88
PID 4024 wrote to memory of 4820	4024	Uni.exe	90
PID 4024 wrote to memory of 4820	4024	Uni.exe	90
PID 4024 wrote to memory of 4820	4024	Uni.exe	90

C:\Users\Admin\AppData\Local\Temp\zvgfd-main\Uni.exe
"C:\Users\Admin\AppData\Local\Temp\zvgfd-main\Uni.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4024
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks" /create /tn "Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\zvgfd-main\Uni.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2288
- C:\Windows\SysWOW64\77-Recovery\$77-LogAGI.exe
  "C:\Windows\SysWOW64\77-Recovery\$77-LogAGI.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3364
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Update" /sc ONLOGON /tr "C:\Windows\SysWOW64\77-Recovery\$77-LogAGI.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2368
- C:\Windows\SysWOW64\SCHTASKS.exe
  "SCHTASKS.exe" /create /tn "$77Uni.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\zvgfd-main\Uni.exe'" /sc onlogon /rl HIGHEST
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4820

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\77-Recovery\$77-LogAGI.exe

Filesize
409KB

MD5
9fa86a10b1b1f922b1c6d8dd29e5a7cd

SHA1
d781a9aa91476b580560d74f7006078edfdc43e6

SHA256
9dfb4ce1fd8968e9f6114fefedbcf8f606893f30bf5968c59dacba1793f1a3dd

SHA512
89f845d808f280f237b62d10faf8f8767d20895e7efecc0c9162120a2d219f73e96ff64d95413ffb0f7722fd6215941c7529715a7778873eb180c4e41493f388

Download Submit
memory/3364-19-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/3364-16-0x0000000005F80000-0x0000000005F8A000-memory.dmp

Filesize
40KB

Download
memory/3364-14-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/3364-13-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/4024-3-0x00000000059C0000-0x0000000005A52000-memory.dmp

Filesize
584KB

Download
memory/4024-6-0x0000000005FB0000-0x0000000005FC2000-memory.dmp

Filesize
72KB

Download
memory/4024-7-0x0000000006BB0000-0x0000000006BEC000-memory.dmp

Filesize
240KB

Download
memory/4024-5-0x0000000005940000-0x00000000059A6000-memory.dmp

Filesize
408KB

Download
memory/4024-4-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/4024-0-0x0000000074CBE000-0x0000000074CBF000-memory.dmp

Filesize
4KB

Download
memory/4024-2-0x0000000006060000-0x0000000006604000-memory.dmp

Filesize
5.6MB

Download
memory/4024-18-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/4024-1-0x0000000000EE0000-0x0000000000F4C000-memory.dmp

Filesize
432KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads