quasar | b53ae247bae6ac6ee53bf0c2a53ab4a98f3e0f26234e7a886a7e5db1d7ff2685

General

Target

5cb393129c64579c40c710393d5cf0b3_JaffaCakes118.exe
Size

349KB
MD5

5cb393129c64579c40c710393d5cf0b3
SHA1

ed055afba02e96d01846aea13dd33fa356c457e6
SHA256

b53ae247bae6ac6ee53bf0c2a53ab4a98f3e0f26234e7a886a7e5db1d7ff2685
SHA512

e306a5ddc0b60dc24853d888f1bacee7c359ac043cd3d8e36eb5a8e5caa457549585cf16050084689cb2018a420a082f9f68f4c1f8ddf894eaf1b6339152a826
SSDEEP

6144:uK2J10qdSlEc39HGWQfSdwl/CKidLDLNbFTUIhO9Ivbi0Z:uKFD3wl6KidLDHQIQ9IDi0Z

Score

10^/10

quasar desktop spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

DESKTOP

C2

192.168.0.4:4782

127.0.0.1:4782

78.236.157.250:25565

Mutex

QSR_MUTEX_1ghurBw7SYWm4hcoxp

Attributes

encryption_key
q0AJ45H6UJPXERK0E6ML
install_name
System Auto Update.exe
log_directory
Logs
reconnect_delay
3000
startup_key
System Auto Update
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3300-1-0x00000000009B0000-0x0000000000A0E000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\System Auto Update.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

System Auto Update.exe

pid process

4228 System Auto Update.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

13 ip-api.com
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exeschtasks.exe

pid process

2408 schtasks.exe
4596 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

5cb393129c64579c40c710393d5cf0b3_JaffaCakes118.exeSystem Auto Update.exe

description pid process

Token: SeDebugPrivilege 3300 5cb393129c64579c40c710393d5cf0b3_JaffaCakes118.exe
Token: SeDebugPrivilege 4228 System Auto Update.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

System Auto Update.exe

pid process

4228 System Auto Update.exe

pid	process
4228	System Auto Update.exe

flow	ioc
13	ip-api.com

pid	process
2408	schtasks.exe
4596	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	3300	5cb393129c64579c40c710393d5cf0b3_JaffaCakes118.exe
Token: SeDebugPrivilege	4228	System Auto Update.exe

pid	process
4228	System Auto Update.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

5cb393129c64579c40c710393d5cf0b3_JaffaCakes118.exeSystem Auto Update.exe

description	pid	process	target process
PID 3300 wrote to memory of 2408	3300	5cb393129c64579c40c710393d5cf0b3_JaffaCakes118.exe	schtasks.exe
PID 3300 wrote to memory of 2408	3300	5cb393129c64579c40c710393d5cf0b3_JaffaCakes118.exe	schtasks.exe
PID 3300 wrote to memory of 2408	3300	5cb393129c64579c40c710393d5cf0b3_JaffaCakes118.exe	schtasks.exe
PID 3300 wrote to memory of 4228	3300	5cb393129c64579c40c710393d5cf0b3_JaffaCakes118.exe	System Auto Update.exe
PID 3300 wrote to memory of 4228	3300	5cb393129c64579c40c710393d5cf0b3_JaffaCakes118.exe	System Auto Update.exe
PID 3300 wrote to memory of 4228	3300	5cb393129c64579c40c710393d5cf0b3_JaffaCakes118.exe	System Auto Update.exe
PID 4228 wrote to memory of 4596	4228	System Auto Update.exe	schtasks.exe
PID 4228 wrote to memory of 4596	4228	System Auto Update.exe	schtasks.exe
PID 4228 wrote to memory of 4596	4228	System Auto Update.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\5cb393129c64579c40c710393d5cf0b3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5cb393129c64579c40c710393d5cf0b3_JaffaCakes118.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3300

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "System Auto Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\5cb393129c64579c40c710393d5cf0b3_JaffaCakes118.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:2408

C:\Users\Admin\AppData\Roaming\SubDir\System Auto Update.exe
"C:\Users\Admin\AppData\Roaming\SubDir\System Auto Update.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4228

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "System Auto Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\System Auto Update.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:4596

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\System Auto Update.exe
Filesize
349KB

MD5
5cb393129c64579c40c710393d5cf0b3

SHA1
ed055afba02e96d01846aea13dd33fa356c457e6

SHA256
b53ae247bae6ac6ee53bf0c2a53ab4a98f3e0f26234e7a886a7e5db1d7ff2685

SHA512
e306a5ddc0b60dc24853d888f1bacee7c359ac043cd3d8e36eb5a8e5caa457549585cf16050084689cb2018a420a082f9f68f4c1f8ddf894eaf1b6339152a826

Download Submit
memory/3300-6-0x00000000060E0000-0x00000000060F2000-memory.dmp

Filesize
72KB

Download
memory/3300-2-0x00000000058C0000-0x0000000005E64000-memory.dmp

Filesize
5.6MB

Download
memory/3300-3-0x0000000005490000-0x0000000005522000-memory.dmp

Filesize
584KB

Download
memory/3300-4-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download
memory/3300-5-0x00000000053D0000-0x0000000005436000-memory.dmp

Filesize
408KB

Download
memory/3300-0-0x00000000745EE000-0x00000000745EF000-memory.dmp

Filesize
4KB

Download
memory/3300-7-0x0000000006620000-0x000000000665C000-memory.dmp

Filesize
240KB

Download
memory/3300-1-0x00000000009B0000-0x0000000000A0E000-memory.dmp

Filesize
376KB

Download
memory/3300-15-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download
memory/4228-14-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download
memory/4228-16-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download
memory/4228-18-0x0000000006010000-0x000000000601A000-memory.dmp

Filesize
40KB

Download
memory/4228-19-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads