quasar | d0c4045c70a0822806a4e56d7883821cd2c19362f1cfed3bcbdb1e1b8eb15234

Analysis

max time kernel
204s
max time network
279s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
27/05/2024, 23:24

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General

Target
New.exe
Size 409KB
Sample240527-3d63msfa74
SHA256 d0c4045c70a0822806a4e56d7883821cd2c19362f1cfed3bcbdb1e1b8eb15234
MD5 cf570b21f42f0ce411b7c9961068931e
SHA1 f92aa688a1dbd64a4585ecfe80a9c2d7f408c57d
SHA512 de9dce8300656cd8531569011d043373193cbda125b738e66a5bf107178b48781d6dc88eea696b2074c352a1bf56a4693cfae62e668993ac24ce18aebfdcd684
SSDEEP 12288:jpyJcC+PgUUboV2hShYoyTyrIh9eqh6bIK+Pz9:9wd+Y2IweyA9eqkMZ
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

quasar video spyware trojan

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

Video

runderscore00-25501.portmap.host:25501

Mutex

$Sxr-oWTh3ZS9htfe80iIl5

Attributes

encryption_key
zK8u0rpHf4TJzGf65Flt
install_name
Win11.exe
log_directory
$sxr-Logs
reconnect_delay
3000
startup_key
Windows 11 Boot
subdirectory
Win11

Signatures

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

Quasar payload 1 IoCs

resource	yara_rule
behavioral2/memory/1800-1-0x0000000000F00000-0x0000000000F6C000-memory.dmp	family_quasar

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	New.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
8	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
2540	SCHTASKS.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4496	PING.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1800	New.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1800	New.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 3572	1800	New.exe	106
PID 1800 wrote to memory of 3572	1800	New.exe	106
PID 1800 wrote to memory of 3572	1800	New.exe	106
PID 3572 wrote to memory of 2700	3572	cmd.exe	108
PID 3572 wrote to memory of 2700	3572	cmd.exe	108
PID 3572 wrote to memory of 2700	3572	cmd.exe	108
PID 3572 wrote to memory of 4496	3572	cmd.exe	109
PID 3572 wrote to memory of 4496	3572	cmd.exe	109
PID 3572 wrote to memory of 4496	3572	cmd.exe	109
PID 1800 wrote to memory of 2540	1800	New.exe	110
PID 1800 wrote to memory of 2540	1800	New.exe	110
PID 1800 wrote to memory of 2540	1800	New.exe	110

C:\Users\Admin\AppData\Local\Temp\New.exe
"C:\Users\Admin\AppData\Local\Temp\New.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1800
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\sX8tIBvchmaV.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3572
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:2700
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 10 localhost
    3⤵
    - Runs ping.exe
    PID:4496
- C:\Windows\SysWOW64\SCHTASKS.exe
  "SCHTASKS.exe" /create /tn "$77New.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\New.exe'" /sc onlogon /rl HIGHEST
  2⤵
  - Creates scheduled task(s)
  PID:2540

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

sX8tIBvchmaV.bat

Path C:\Users\Admin\AppData\Local\Temp\sX8tIBvchmaV.bat
Size 260B
SHA256 72741c50a095075cd5e4cd7e47f809fb9fb5f01ef1b06936cf2546df49209bcd
MD5 bcd837a5c3a46e32daa119e4b886595b
SHA1 47966e4245a0a88f30d12c266242a6ac4857b8b9
SHA512 a17c11c022a84404f3ee0357489ae01702fcf18a40078912d3212db1a5713f2223a413539c85aa84a94d91aabe8b2cc06079b0ba43c8c20c24d9f7f2593a8d99
MD5 SHA1 SHA512

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05-27-~1

Path C:\Users\Admin\AppData\Roaming\$sxr-Logs\05-27-~1
Size 224B
SHA256 8f249049044e76a4337b42f5cad12350c5fa31889fea7688990979a0923ba017
MD5 1e1197daea125fef6f6ab43d7dab2529
SHA1 e8f5634b30a6f81085a06f5820dfc8f92185539d
SHA512 b2096d3702a018783f8495bb1cc54e058a9acc6309222b7b575a7edaf3746870029719b3fe9f1f0670c8c1b8ba348c7bc6ca671378a38523e20dcf146b976f9a
MD5 SHA1 SHA512

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memory/1800-6-0x00000000067D0000-0x00000000067E2000-memory.dmp

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memory/1800-3-0x0000000005980000-0x0000000005A12000-memory.dmp

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memory/1800-4-0x0000000074700000-0x0000000074EB0000-memory.dmp

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memory/1800-5-0x0000000005A50000-0x0000000005AB6000-memory.dmp

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memory/1800-0-0x000000007470E000-0x000000007470F000-memory.dmp

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memory/1800-7-0x0000000006D10000-0x0000000006D4C000-memory.dmp

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memory/1800-9-0x00000000071D0000-0x00000000071DA000-memory.dmp

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memory/1800-10-0x000000007470E000-0x000000007470F000-memory.dmp

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memory/1800-11-0x0000000074700000-0x0000000074EB0000-memory.dmp

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memory/1800-2-0x0000000005E20000-0x00000000063C4000-memory.dmp

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memory/1800-17-0x0000000074700000-0x0000000074EB0000-memory.dmp

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memory/1800-1-0x0000000000F00000-0x0000000000F6C000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads