quasar | 5b4b8b61572b28eb349e3a9049feb5242ef13270b47f00d352b91ff5d0cbbbcf

Analysis

max time kernel
23s
max time network
19s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
16-05-2024 02:39

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General

Target

pin cracker (3).exe
Size

3.1MB
MD5

9effa0a8800dd420cb70175619b1fce5
SHA1

d0e0581a51357875a789b282b7370c3fcf6d2207
SHA256

5b4b8b61572b28eb349e3a9049feb5242ef13270b47f00d352b91ff5d0cbbbcf
SHA512

b7bf41da9132dbf8d92be10dda8119bdbfe426496e1d415e18d85b3ddb73e598c154e64321c33eea7b71e322dacb3f18589dfbe5a356aa18da352c6ae4308808
SSDEEP

49152:rvOI22SsaNYfdPBldt698dBcjH/8fua+mzYCoGdnTHHB72eh2NT:rvj22SsaNYfdPBldt6+dBcjH0fua9

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

192.168.1.160:4782

Mutex

9fdee828-b7fc-459e-9416-a8cc42a3265c

Attributes

encryption_key
A4FE4005B8C0621A18088C1B9505D2B8F5A67143
install_name
hack.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3704-1-0x0000000000890000-0x0000000000BB4000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\hack.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

hack.exe

pid process

3464 hack.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:

pin cracker (3).exehack.exe

description pid process

Token: SeDebugPrivilege 3704 pin cracker (3).exe
Token: SeDebugPrivilege 3464 hack.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

hack.exe

pid process

3464 hack.exe
Suspicious use of SendNotifyMessage 1 IoCs

Processes:

hack.exe

pid process

3464 hack.exe

pid	process
3464	hack.exe

description	pid	process
Token: SeDebugPrivilege	3704	pin cracker (3).exe
Token: SeDebugPrivilege	3464	hack.exe

pid	process
3464	hack.exe

pid	process
3464	hack.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

pin cracker (3).exe

description	pid	process	target process
PID 3704 wrote to memory of 3464	3704	pin cracker (3).exe	hack.exe
PID 3704 wrote to memory of 3464	3704	pin cracker (3).exe	hack.exe

C:\Users\Admin\AppData\Local\Temp\pin cracker (3).exe
"C:\Users\Admin\AppData\Local\Temp\pin cracker (3).exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3704

C:\Users\Admin\AppData\Roaming\SubDir\hack.exe
"C:\Users\Admin\AppData\Roaming\SubDir\hack.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:3464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\hack.exe

Filesize
3.1MB

MD5
9effa0a8800dd420cb70175619b1fce5

SHA1
d0e0581a51357875a789b282b7370c3fcf6d2207

SHA256
5b4b8b61572b28eb349e3a9049feb5242ef13270b47f00d352b91ff5d0cbbbcf

SHA512
b7bf41da9132dbf8d92be10dda8119bdbfe426496e1d415e18d85b3ddb73e598c154e64321c33eea7b71e322dacb3f18589dfbe5a356aa18da352c6ae4308808

Download Submit
memory/3464-9-0x00007FFC142F0000-0x00007FFC14DB2000-memory.dmp

Filesize
10.8MB

Download
memory/3464-10-0x00007FFC142F0000-0x00007FFC14DB2000-memory.dmp

Filesize
10.8MB

Download
memory/3464-11-0x000000001C030000-0x000000001C080000-memory.dmp

Filesize
320KB

Download
memory/3464-12-0x000000001C140000-0x000000001C1F2000-memory.dmp

Filesize
712KB

Download
memory/3464-13-0x00007FFC142F0000-0x00007FFC14DB2000-memory.dmp

Filesize
10.8MB

Download
memory/3704-0-0x00007FFC142F3000-0x00007FFC142F5000-memory.dmp

Filesize
8KB

Download
memory/3704-1-0x0000000000890000-0x0000000000BB4000-memory.dmp

Filesize
3.1MB

Download
memory/3704-2-0x00007FFC142F0000-0x00007FFC14DB2000-memory.dmp

Filesize
10.8MB

Download
memory/3704-8-0x00007FFC142F0000-0x00007FFC14DB2000-memory.dmp

Filesize
10.8MB

Download