quasar | 6a1e31b04adc8e779095fb61f7e3cafc8866f644865ee64ee1d02210f7db3766

General

Target

3a7117d0c950b44d5464cd6841dd95cd_JaffaCakes118.exe
Size

472KB
MD5

3a7117d0c950b44d5464cd6841dd95cd
SHA1

b0dd2745f822d1e43300fa1ccb11749fdfcf1260
SHA256

6a1e31b04adc8e779095fb61f7e3cafc8866f644865ee64ee1d02210f7db3766
SHA512

a8c3ce748eee0ef88ce737d853d26d3f9e49bb7cfbbf7c67dfebfa7451279010f67c552f3f49275788db21f423ebfa845f2726892bdc2596af36682b7791ab25
SSDEEP

6144:wYd3flbbsDpd0DHo5AqYOy8oE0B7mEuZe35o4LILBWflzgWErnrXnzmjdoBqZg:wYd901AqoES7mEuZmi4LILBelztqmi

Score

10^/10

quasar venomrat svhost rat rootkit spyware stealer trojan

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

svhost

C2

myconect.ddns.net:6606

Mutex

VNM_MUTEX_ND6PULLW5ZVLwo1nwR

Attributes

encryption_key
yaa63tXY4j55os5llHHd
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Venom Client Startup
subdirectory
SubDir

Signatures

Contains code to disable Windows Defender 2 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

Processes:

resource	yara_rule
\Users\Admin\AppData\Roaming\$77-Venom.exe	disable_win_def
behavioral1/memory/1960-12-0x0000000000340000-0x00000000003CC000-memory.dmp	disable_win_def

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

Quasar payload 2 IoCs

Processes:

resource	yara_rule
\Users\Admin\AppData\Roaming\$77-Venom.exe	family_quasar
behavioral1/memory/1960-12-0x0000000000340000-0x00000000003CC000-memory.dmp	family_quasar

VenomRAT
VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.
rat rootkit stealer venomrat
Executes dropped EXE 1 IoCs

Processes:

$77-Venom.exe

pid process

1960 $77-Venom.exe
Loads dropped DLL 1 IoCs

Processes:

3a7117d0c950b44d5464cd6841dd95cd_JaffaCakes118.exe

pid process

2484 3a7117d0c950b44d5464cd6841dd95cd_JaffaCakes118.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

2 ip-api.com

pid	process
1960	$77-Venom.exe

pid	process
2484	3a7117d0c950b44d5464cd6841dd95cd_JaffaCakes118.exe

flow	ioc
2	ip-api.com

Drops file in Windows directory 2 IoCs

Processes:

3a7117d0c950b44d5464cd6841dd95cd_JaffaCakes118.exe

description	ioc	process
File created	C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch.new	3a7117d0c950b44d5464cd6841dd95cd_JaffaCakes118.exe
File created	C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch.new	3a7117d0c950b44d5464cd6841dd95cd_JaffaCakes118.exe

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

System Information Discovery
T1082
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

$77-Venom.exe

description pid process

Token: SeDebugPrivilege 1960 $77-Venom.exe
Token: SeDebugPrivilege 1960 $77-Venom.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

DllHost.exe

pid process

2700 DllHost.exe

description	pid	process
Token: SeDebugPrivilege	1960	$77-Venom.exe
Token: SeDebugPrivilege	1960	$77-Venom.exe

pid	process
2700	DllHost.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

3a7117d0c950b44d5464cd6841dd95cd_JaffaCakes118.exe

description	pid	process	target process
PID 2484 wrote to memory of 1960	2484	3a7117d0c950b44d5464cd6841dd95cd_JaffaCakes118.exe	$77-Venom.exe
PID 2484 wrote to memory of 1960	2484	3a7117d0c950b44d5464cd6841dd95cd_JaffaCakes118.exe	$77-Venom.exe
PID 2484 wrote to memory of 1960	2484	3a7117d0c950b44d5464cd6841dd95cd_JaffaCakes118.exe	$77-Venom.exe
PID 2484 wrote to memory of 1960	2484	3a7117d0c950b44d5464cd6841dd95cd_JaffaCakes118.exe	$77-Venom.exe

C:\Users\Admin\AppData\Local\Temp\3a7117d0c950b44d5464cd6841dd95cd_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3a7117d0c950b44d5464cd6841dd95cd_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2484
- C:\Users\Admin\AppData\Roaming\$77-Venom.exe
  "C:\Users\Admin\AppData\Roaming\$77-Venom.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1960

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:2700

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\shipoil.jpg

Filesize
30KB

MD5
7363f95e115ad5cb08d178430e46fb2b

SHA1
8d2ae220cc204de0c2f6aee25d77c99ed7003e18

SHA256
ee04486009e345f00c2c08ccea1231d57dff8213848612dc4d728d29b79ea93d

SHA512
6923284c9b813e80453486193a49fe526cdfa8013039d9b49a6f9ef706a1d615407e26b90c39f7af02ca7f387c893c476b3ef4ded0d00961d75c5b719d92ca5b

Download Submit
\Users\Admin\AppData\Roaming\$77-Venom.exe

Filesize
534KB

MD5
84c1dc6b428904cc2a6746653849df0f

SHA1
5cce4078427481f4d7456b5a4f3930ae6e706fb4

SHA256
bc24e3c5408fea0b6f9aa0deb56a4636a8d0b9a6054ff1033efa6ccfe04ba44a

SHA512
3b7a7607c3409b5ded563f2e1fcc0fa489c4465ab764d14a647b474968a025a95fa8ceb549fc70482b7b1dd935f66a41ada7b4910059786aafc870c5847a9245

Download Submit
memory/1960-11-0x0000000072A4E000-0x0000000072A4F000-memory.dmp

Filesize
4KB

Download
memory/1960-12-0x0000000000340000-0x00000000003CC000-memory.dmp

Filesize
560KB

Download
memory/1960-21-0x0000000072A4E000-0x0000000072A4F000-memory.dmp

Filesize
4KB

Download
memory/2484-0-0x0000000074AA1000-0x0000000074AA2000-memory.dmp

Filesize
4KB

Download
memory/2484-1-0x0000000074AA0000-0x000000007504B000-memory.dmp

Filesize
5.7MB

Download
memory/2484-2-0x0000000074AA0000-0x000000007504B000-memory.dmp

Filesize
5.7MB

Download
memory/2484-13-0x0000000002170000-0x0000000002172000-memory.dmp

Filesize
8KB

Download
memory/2484-19-0x0000000074AA0000-0x000000007504B000-memory.dmp

Filesize
5.7MB

Download
memory/2700-14-0x00000000001A0000-0x00000000001A2000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads