quasar | 44f270569724153f8cc32905397c86d5b37285b34b1ee0df31cd195b2fa4c74a

General

Target

Client-built.exe
Size

348KB
MD5

492eb44f539caa20141bd7d84783d821
SHA1

6586778be19a5a4caf0e29b61cace38467ba7367
SHA256

44f270569724153f8cc32905397c86d5b37285b34b1ee0df31cd195b2fa4c74a
SHA512

a9e2528e54328cade71762185b221699e32b6c4f48c53562bfe950ee704395d399fdd757b4edb496bfb1b8694c69f6da153ce797c58dd9579d5774a86aed7a8f
SSDEEP

6144:xI6bPXhLApfp9CpZPBbinJjNKOOlr7H7PAGm:GmhApUZgnJIvH7PAGm

Score

10^/10

quasar meedo discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Meedo

C2

2.tcp.eu.ngrok.io:8080

Mutex

QSR_MUTEX_NQUsVoNfuuCMRLITRA

Attributes

encryption_key
stf5wT9i1WRQevpAlPN0
install_name
win.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Windows Runtime
subdirectory
Subdir

Signatures

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

Quasar payload 3 IoCs

resource	yara_rule
behavioral1/memory/2560-1-0x00000000008A0000-0x00000000008FE000-memory.dmp	family_quasar
behavioral1/files/0x00090000000174bf-5.dat	family_quasar
behavioral1/memory/2776-12-0x0000000000C30000-0x0000000000C8E000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2776	win.exe

Loads dropped DLL 1 IoCs

pid	Process
2560	Client-built.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 1 IoCs

Web Service

T1102

flow	ioc
5	2.tcp.eu.ngrok.io

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

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Client-built.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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
2472	schtasks.exe
2816	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2560	Client-built.exe
Token: SeDebugPrivilege	2776	win.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2776	win.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2560 wrote to memory of 2472	2560	Client-built.exe	31
PID 2560 wrote to memory of 2472	2560	Client-built.exe	31
PID 2560 wrote to memory of 2472	2560	Client-built.exe	31
PID 2560 wrote to memory of 2472	2560	Client-built.exe	31
PID 2560 wrote to memory of 2776	2560	Client-built.exe	33
PID 2560 wrote to memory of 2776	2560	Client-built.exe	33
PID 2560 wrote to memory of 2776	2560	Client-built.exe	33
PID 2560 wrote to memory of 2776	2560	Client-built.exe	33
PID 2776 wrote to memory of 2816	2776	win.exe	34
PID 2776 wrote to memory of 2816	2776	win.exe	34
PID 2776 wrote to memory of 2816	2776	win.exe	34
PID 2776 wrote to memory of 2816	2776	win.exe	34

C:\Users\Admin\AppData\Local\Temp\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2560
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks" /create /tn "Windows Runtime" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Client-built.exe" /rl HIGHEST /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2472
- C:\Users\Admin\AppData\Roaming\Subdir\win.exe
  "C:\Users\Admin\AppData\Roaming\Subdir\win.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2776
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Windows Runtime" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Subdir\win.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2816

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Roaming\Subdir\win.exe

Filesize
348KB

MD5
492eb44f539caa20141bd7d84783d821

SHA1
6586778be19a5a4caf0e29b61cace38467ba7367

SHA256
44f270569724153f8cc32905397c86d5b37285b34b1ee0df31cd195b2fa4c74a

SHA512
a9e2528e54328cade71762185b221699e32b6c4f48c53562bfe950ee704395d399fdd757b4edb496bfb1b8694c69f6da153ce797c58dd9579d5774a86aed7a8f

Download Submit
memory/2560-0-0x000000007402E000-0x000000007402F000-memory.dmp

Filesize
4KB

Download
memory/2560-1-0x00000000008A0000-0x00000000008FE000-memory.dmp

Filesize
376KB

Download
memory/2560-2-0x0000000074020000-0x000000007470E000-memory.dmp

Filesize
6.9MB

Download
memory/2560-11-0x0000000074020000-0x000000007470E000-memory.dmp

Filesize
6.9MB

Download
memory/2776-10-0x0000000074020000-0x000000007470E000-memory.dmp

Filesize
6.9MB

Download
memory/2776-12-0x0000000000C30000-0x0000000000C8E000-memory.dmp

Filesize
376KB

Download
memory/2776-13-0x0000000074020000-0x000000007470E000-memory.dmp

Filesize
6.9MB

Download
memory/2776-15-0x0000000074020000-0x000000007470E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads