quasar | 9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a

General

Target

9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe
Size

454KB
MD5

f227f29cfb2aa5df483628e9a13ba879
SHA1

bd23442d6ae60d3e3df7dfd6693245f97cd79533
SHA256

9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a
SHA512

930599ce5fa347921885bf4ae2e9c3c621d23f43883e7790b0b380d71a6576ffc74d61f6b6dc02ad7a2ee16f8a7d4b85b436c29068f9f07873a96e69112415e2

Score

10^/10

quasar revengerat zenoxpu spyware trojan

Malware Config

Extracted

Family

quasar

Version

3.0

Botnet

ZenoXpu

C2

185.153.222.198:7845

Mutex

HIFbOBRX8hIfqiy4wu

Attributes

encryption_key
DQXvqTzM5uyODUsZK174
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

Quasar Payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1800-142-0x0000000000400000-0x000000000044E000-memory.dmp	family_quasar
behavioral2/memory/1800-147-0x0000000005060000-0x0000000005604000-memory.dmp	family_quasar

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
RevengeRAT
Remote-access trojan with a wide range of capabilities.
trojan revengerat
Executes dropped EXE 2 IoCs

Processes:

aspnet_compiler.exeaspnet_compiler.exe

pid process

3124 aspnet_compiler.exe
1800 aspnet_compiler.exe

pid	process
3124	aspnet_compiler.exe
1800	aspnet_compiler.exe

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exeWScript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2403053463-4052593947-3703345493-1000\Control Panel\International\Geo\Nation	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2403053463-4052593947-3703345493-1000\Control Panel\International\Geo\Nation	WScript.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.

Processes:

flow ioc

45 ip-api.com

flow	ioc
45	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

Processes:

9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe

description	pid	process	target process
PID 4332 set thread context of 1800	4332	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe	aspnet_compiler.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2403053463-4052593947-3703345493-1000_Classes\Local Settings	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exepowershell.exe

pid	process
4332	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe
4332	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe
4332	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe
4332	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe
4332	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe
4332	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe
2424	powershell.exe
2424	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exepowershell.exeaspnet_compiler.exe

description	pid	process
Token: SeDebugPrivilege	4332	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe
Token: SeDebugPrivilege	2424	powershell.exe
Token: SeDebugPrivilege	1800	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exeWScript.exe

description	pid	process	target process
PID 4332 wrote to memory of 864	4332	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe	WScript.exe
PID 4332 wrote to memory of 864	4332	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe	WScript.exe
PID 4332 wrote to memory of 864	4332	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe	WScript.exe
PID 4332 wrote to memory of 3124	4332	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe	aspnet_compiler.exe
PID 4332 wrote to memory of 3124	4332	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe	aspnet_compiler.exe
PID 4332 wrote to memory of 3124	4332	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe	aspnet_compiler.exe
PID 4332 wrote to memory of 1800	4332	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe	aspnet_compiler.exe
PID 4332 wrote to memory of 1800	4332	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe	aspnet_compiler.exe
PID 4332 wrote to memory of 1800	4332	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe	aspnet_compiler.exe
PID 4332 wrote to memory of 1800	4332	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe	aspnet_compiler.exe
PID 4332 wrote to memory of 1800	4332	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe	aspnet_compiler.exe
PID 4332 wrote to memory of 1800	4332	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe	aspnet_compiler.exe
PID 4332 wrote to memory of 1800	4332	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe	aspnet_compiler.exe
PID 4332 wrote to memory of 1800	4332	9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe	aspnet_compiler.exe
PID 864 wrote to memory of 2424	864	WScript.exe	powershell.exe
PID 864 wrote to memory of 2424	864	WScript.exe	powershell.exe
PID 864 wrote to memory of 2424	864	WScript.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe
"C:\Users\Admin\AppData\Local\Temp\9df4e1f2aca6df41008c405008749423352533359efba8e5ca865bf8f1f5cb8a.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4332

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\zHuhaouwpfrof.vbs"
2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:864

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath C:\
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2424

C:\Users\Admin\AppData\Local\Temp\aspnet_compiler.exe
C:\Users\Admin\AppData\Local\Temp\aspnet_compiler.exe
2⤵
- Executes dropped EXE
PID:3124

C:\Users\Admin\AppData\Local\Temp\aspnet_compiler.exe
C:\Users\Admin\AppData\Local\Temp\aspnet_compiler.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1800

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\aspnet_compiler.exe
MD5
fda8c8f2a4e100afb14c13dfcbcab2d2

SHA1
19dfd86294c4a525ba21c6af77681b2a9bbecb55

SHA256
99a2c778c9a6486639d0aff1a7d2d494c2b0dc4c7913ebcb7bfea50a2f1d0b09

SHA512
94f0ace37cae77be9935cf4fc8aaa94691343d3b38de5e16c663b902c220bff513cd02256c7af2d815a23dd30439582ddbb0880009c76bbf36ff8fbc1a6ddc18

Download Submit
C:\Users\Admin\AppData\Local\Temp\aspnet_compiler.exe
MD5
fda8c8f2a4e100afb14c13dfcbcab2d2

SHA1
19dfd86294c4a525ba21c6af77681b2a9bbecb55

SHA256
99a2c778c9a6486639d0aff1a7d2d494c2b0dc4c7913ebcb7bfea50a2f1d0b09

SHA512
94f0ace37cae77be9935cf4fc8aaa94691343d3b38de5e16c663b902c220bff513cd02256c7af2d815a23dd30439582ddbb0880009c76bbf36ff8fbc1a6ddc18

Download Submit
C:\Users\Admin\AppData\Local\Temp\aspnet_compiler.exe
MD5
fda8c8f2a4e100afb14c13dfcbcab2d2

SHA1
19dfd86294c4a525ba21c6af77681b2a9bbecb55

SHA256
99a2c778c9a6486639d0aff1a7d2d494c2b0dc4c7913ebcb7bfea50a2f1d0b09

SHA512
94f0ace37cae77be9935cf4fc8aaa94691343d3b38de5e16c663b902c220bff513cd02256c7af2d815a23dd30439582ddbb0880009c76bbf36ff8fbc1a6ddc18

Download Submit
C:\Users\Admin\AppData\Local\Temp\zHuhaouwpfrof.vbs
MD5
570e1760047887d4773c02a7f0c0a9ef

SHA1
ea36b58136c15c0c38ca496e5fd55e9de62073dc

SHA256
c14774447472f5eec655d2046e6e4930b3bed4877de328d4f8a58416b7144db2

SHA512
aeb14674534d2a4cc6d58fe733a4a6085d031f1a45ddad9e3e8fa312879b6cd8a1dff962529639b8ebea98d1ca8a9d42c0893d267696a70c7e9db696980b9ef3

Download Submit
memory/1800-146-0x0000000005100000-0x0000000005192000-memory.dmp

Filesize
584KB

Download
memory/1800-145-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download
memory/1800-157-0x0000000006420000-0x000000000645C000-memory.dmp

Filesize
240KB

Download
memory/1800-156-0x0000000006000000-0x0000000006012000-memory.dmp

Filesize
72KB

Download
memory/1800-142-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1800-152-0x00000000052D0000-0x0000000005336000-memory.dmp

Filesize
408KB

Download
memory/1800-147-0x0000000005060000-0x0000000005604000-memory.dmp

Filesize
5.6MB

Download
memory/2424-154-0x0000000005D20000-0x0000000005D42000-memory.dmp

Filesize
136KB

Download
memory/2424-155-0x0000000005D80000-0x0000000005DE6000-memory.dmp

Filesize
408KB

Download
memory/2424-158-0x0000000005E40000-0x0000000005E5E000-memory.dmp

Filesize
120KB

Download
memory/2424-149-0x0000000002B50000-0x0000000002B51000-memory.dmp

Filesize
4KB

Download
memory/2424-148-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download
memory/2424-150-0x0000000002B10000-0x0000000002B46000-memory.dmp

Filesize
216KB

Download
memory/2424-151-0x0000000002B52000-0x0000000002B53000-memory.dmp

Filesize
4KB

Download
memory/2424-153-0x0000000005500000-0x0000000005B28000-memory.dmp

Filesize
6.2MB

Download
memory/4332-136-0x0000000005640000-0x0000000005641000-memory.dmp

Filesize
4KB

Download
memory/4332-139-0x0000000005C70000-0x0000000005C8E000-memory.dmp

Filesize
120KB

Download
memory/4332-134-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download
memory/4332-137-0x0000000005CA0000-0x0000000006244000-memory.dmp

Filesize
5.6MB

Download
memory/4332-138-0x00000000059B0000-0x0000000005A26000-memory.dmp

Filesize
472KB

Download
memory/4332-135-0x0000000000C70000-0x0000000000CE8000-memory.dmp

Filesize
480KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads