quasar | ab991f490e6b779f70f684ac6742c6ba25be045822695bfc02fa0dd1c6e423c2

General

Target

11dbce37dfbc51c96c4f699c51e3c1bb7626cb7efcdbb9408cc500428a48827e.exe
Size

1.0MB
MD5

d1c929278c8a9455e511c54af3fa83f0
SHA1

d84ec50973b36bd214cd43ebb1baac6b2cdc8b83
SHA256

11dbce37dfbc51c96c4f699c51e3c1bb7626cb7efcdbb9408cc500428a48827e
SHA512

b1aeff9ffc7a76d80ba6e3999ed2a47b10d42e9d2bbe690617b71d59762ba64040088dc5b18905634c59bfb84dd85023e8619303386877f5f71969eb21b9b8d8
SSDEEP

24576:M+ynkc1ZzBvtrZHFjMKY2SrtxeloGEoUDwc81iwJZ:pynkc1ZzBvtrZHFjMKY2+xeloGEzDx8l

Score

10^/10

quasar venom client persistence spyware trojan

Malware Config

Extracted

Family

quasar

Version

2.7.0.0

Botnet

Venom Client

C2

markphoto.casacam.net:5000

Mutex

JlYM51eW4iZoFyLa2X

Attributes

encryption_key
Xs9khGbxnXFgwtiuru4Q
install_name
Venom.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Venom Client Startup

Signatures

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

Quasar payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3040-133-0x00000000000F0000-0x0000000000200000-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

Processes:

11dbce37dfbc51c96c4f699c51e3c1bb7626cb7efcdbb9408cc500428a48827e.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Control Panel\International\Geo\Nation	11dbce37dfbc51c96c4f699c51e3c1bb7626cb7efcdbb9408cc500428a48827e.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

WScript.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Venom Client Startup = "C:\\Users\\Admin\\AppData\\Roaming\\Venom.exe"	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

3 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
T1053

Processes:

schtasks.exe

pid process

1424 schtasks.exe
Modifies registry class 1 IoCs

Processes:

explorer.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000_Classes\Local Settings explorer.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

11dbce37dfbc51c96c4f699c51e3c1bb7626cb7efcdbb9408cc500428a48827e.exe

description pid process

Token: SeDebugPrivilege 3040 11dbce37dfbc51c96c4f699c51e3c1bb7626cb7efcdbb9408cc500428a48827e.exe

flow	ioc
3	ip-api.com

pid	process
1424	schtasks.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000_Classes\Local Settings	explorer.exe

description	pid	process
Token: SeDebugPrivilege	3040	11dbce37dfbc51c96c4f699c51e3c1bb7626cb7efcdbb9408cc500428a48827e.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

11dbce37dfbc51c96c4f699c51e3c1bb7626cb7efcdbb9408cc500428a48827e.exeexplorer.exe

description	pid	process	target process
PID 3040 wrote to memory of 1424	3040	11dbce37dfbc51c96c4f699c51e3c1bb7626cb7efcdbb9408cc500428a48827e.exe	schtasks.exe
PID 3040 wrote to memory of 1424	3040	11dbce37dfbc51c96c4f699c51e3c1bb7626cb7efcdbb9408cc500428a48827e.exe	schtasks.exe
PID 3040 wrote to memory of 1424	3040	11dbce37dfbc51c96c4f699c51e3c1bb7626cb7efcdbb9408cc500428a48827e.exe	schtasks.exe
PID 3040 wrote to memory of 2144	3040	11dbce37dfbc51c96c4f699c51e3c1bb7626cb7efcdbb9408cc500428a48827e.exe	explorer.exe
PID 3040 wrote to memory of 2144	3040	11dbce37dfbc51c96c4f699c51e3c1bb7626cb7efcdbb9408cc500428a48827e.exe	explorer.exe
PID 3040 wrote to memory of 2144	3040	11dbce37dfbc51c96c4f699c51e3c1bb7626cb7efcdbb9408cc500428a48827e.exe	explorer.exe
PID 2988 wrote to memory of 968	2988	explorer.exe	WScript.exe
PID 2988 wrote to memory of 968	2988	explorer.exe	WScript.exe

C:\Users\Admin\AppData\Local\Temp\11dbce37dfbc51c96c4f699c51e3c1bb7626cb7efcdbb9408cc500428a48827e.exe
"C:\Users\Admin\AppData\Local\Temp\11dbce37dfbc51c96c4f699c51e3c1bb7626cb7efcdbb9408cc500428a48827e.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3040

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "Venom Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Venom.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:1424

C:\Windows\SysWOW64\explorer.exe
"C:\Windows\System32\explorer.exe" C:\Users\Admin\AppData\Local\Execution.vbs
2⤵
PID:2144

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2988

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Execution.vbs"
2⤵
- Adds Run key to start application
PID:968

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Execution.vbs
Filesize
487B

MD5
c615faeefc28c1044bdfb204a6227aa6

SHA1
b60b35a1e074a99ec3f51757f7119d85d996982d

SHA256
e3e3827040baa12d5c07f0dd976f890a96e11fd58767845db161d4192282e330

SHA512
dffdbb0d8adfd383ef80af421cc876f4f1aa3a68ac408dd2e01dcc30ad5fbd7cf5ac2203d280eef683aa4cf73ac6863c3c473a1f62ff9011981731d98b77d498

Download Submit
memory/3040-133-0x00000000000F0000-0x0000000000200000-memory.dmp

Filesize
1.1MB

Download
memory/3040-134-0x0000000005150000-0x00000000056F4000-memory.dmp

Filesize
5.6MB

Download
memory/3040-135-0x0000000004C40000-0x0000000004CD2000-memory.dmp

Filesize
584KB

Download
memory/3040-136-0x0000000004B80000-0x0000000004B90000-memory.dmp

Filesize
64KB

Download
memory/3040-137-0x0000000004FE0000-0x0000000005046000-memory.dmp

Filesize
408KB

Download
memory/3040-138-0x0000000005CE0000-0x0000000005CF2000-memory.dmp

Filesize
72KB

Download
memory/3040-139-0x0000000006110000-0x000000000614C000-memory.dmp

Filesize
240KB

Download
memory/3040-140-0x0000000006360000-0x00000000063FC000-memory.dmp

Filesize
624KB

Download
memory/3040-144-0x0000000004B80000-0x0000000004B90000-memory.dmp

Filesize
64KB

Download
memory/3040-145-0x0000000006610000-0x000000000661A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads