quasar | 018f75f18b882044109f250f19da654c0b3bd90430b318fcb03348908a189aae

General

Target
loadervmp.exe
Size 409KB
Sample240601-jgpg8aec2s
SHA256 018f75f18b882044109f250f19da654c0b3bd90430b318fcb03348908a189aae
MD5 14f056491baaed04872533c2d9648d46
SHA1 c48b08d0e9064f2d060f19474bb54cf3c5a25586
SHA512 c109b1a9cf40049f8958beab9cff112cb326dd719c56f6dedafda4cf3a64d3faae3912f34cbcc1ee203a0316e40b8f7016624f05a1ad6c93bbaa0bdc9dc79b08
SSDEEP 6144:rMvlpdRJjGq/ldSTTIgiGwo9W0MFMJyb7+Ye0SmxalGcqwL6Ir4H9VI:EpbJjGu/STTIwJWIJgG0jFCRsH9VI
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

quasar seroxen spyware trojan

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

SeroXen

C2

panel-slave.gl.at.ply.gg:57059
panel-slave.gl.at.ply.gg:27892

Mutex

$Sxr-rpL8EItHN3pqIQQVy2

Attributes

encryption_key
ZJpQQkxTrak9Zs9tUOQW
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
SeroXen
subdirectory
SubDir

Signatures

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

Quasar payload 3 IoCs

resource	yara_rule
behavioral1/memory/2956-1-0x0000000001220000-0x000000000128C000-memory.dmp	family_quasar
behavioral1/files/0x002a000000015c3c-5.dat	family_quasar
behavioral1/memory/2584-11-0x0000000000080000-0x00000000000EC000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2584	Client.exe

Loads dropped DLL 1 IoCs

pid	Process
2956	loadervmp.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
2	ip-api.com

Creates scheduled task(s) 1 TTPs 3 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
2912	schtasks.exe
2448	schtasks.exe
2500	SCHTASKS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2956	loadervmp.exe
Token: SeDebugPrivilege	2584	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2584	Client.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2956 wrote to memory of 2912	2956	loadervmp.exe	29
PID 2956 wrote to memory of 2912	2956	loadervmp.exe	29
PID 2956 wrote to memory of 2912	2956	loadervmp.exe	29
PID 2956 wrote to memory of 2912	2956	loadervmp.exe	29
PID 2956 wrote to memory of 2584	2956	loadervmp.exe	31
PID 2956 wrote to memory of 2584	2956	loadervmp.exe	31
PID 2956 wrote to memory of 2584	2956	loadervmp.exe	31
PID 2956 wrote to memory of 2584	2956	loadervmp.exe	31
PID 2956 wrote to memory of 2584	2956	loadervmp.exe	31
PID 2956 wrote to memory of 2584	2956	loadervmp.exe	31
PID 2956 wrote to memory of 2584	2956	loadervmp.exe	31
PID 2584 wrote to memory of 2448	2584	Client.exe	32
PID 2584 wrote to memory of 2448	2584	Client.exe	32
PID 2584 wrote to memory of 2448	2584	Client.exe	32
PID 2584 wrote to memory of 2448	2584	Client.exe	32
PID 2956 wrote to memory of 2500	2956	loadervmp.exe	34
PID 2956 wrote to memory of 2500	2956	loadervmp.exe	34
PID 2956 wrote to memory of 2500	2956	loadervmp.exe	34
PID 2956 wrote to memory of 2500	2956	loadervmp.exe	34

C:\Users\Admin\AppData\Local\Temp\loadervmp.exe
"C:\Users\Admin\AppData\Local\Temp\loadervmp.exe"
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2956
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\loadervmp.exe" /rl HIGHEST /f
  2⤵
  - Creates scheduled task(s)
  PID:2912
- C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2584
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:2448
- C:\Windows\SysWOW64\SCHTASKS.exe
  "SCHTASKS.exe" /create /tn "$77loadervmp.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\loadervmp.exe'" /sc onlogon /rl HIGHEST
  2⤵
  - Creates scheduled task(s)
  PID:2500

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Client.exe

Path \Users\Admin\AppData\Roaming\SubDir\Client.exe
Size 409KB
SHA256 018f75f18b882044109f250f19da654c0b3bd90430b318fcb03348908a189aae
MD5 14f056491baaed04872533c2d9648d46
SHA1 c48b08d0e9064f2d060f19474bb54cf3c5a25586
SHA512 c109b1a9cf40049f8958beab9cff112cb326dd719c56f6dedafda4cf3a64d3faae3912f34cbcc1ee203a0316e40b8f7016624f05a1ad6c93bbaa0bdc9dc79b08
SSDEEP 6144:rMvlpdRJjGq/ldSTTIgiGwo9W0MFMJyb7+Ye0SmxalGcqwL6Ir4H9VI:EpbJjGu/STTIwJWIJgG0jFCRsH9VI
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2584-10-0x0000000074610000-0x0000000074CFE000-memory.dmp

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memory/2584-11-0x0000000000080000-0x00000000000EC000-memory.dmp

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memory/2584-12-0x0000000074610000-0x0000000074CFE000-memory.dmp

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memory/2584-15-0x0000000074610000-0x0000000074CFE000-memory.dmp

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memory/2584-16-0x0000000074610000-0x0000000074CFE000-memory.dmp

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memory/2956-0-0x000000007461E000-0x000000007461F000-memory.dmp

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memory/2956-1-0x0000000001220000-0x000000000128C000-memory.dmp

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memory/2956-2-0x0000000074610000-0x0000000074CFE000-memory.dmp

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memory/2956-14-0x0000000074610000-0x0000000074CFE000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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