quasar | 910222c58e9a584fe4015ef10462470b320b624d7b56056b3ffcf7ea2f479b80

Analysis

max time kernel
130s
max time network
144s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
01-07-2024 01:22

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General

Target

27dad1cf69f9cb558f4d975c8bf34faa.exe
Size

3.1MB
MD5

27dad1cf69f9cb558f4d975c8bf34faa
SHA1

ea7beaa366b83b6e8410b10cdf055d08df49c907
SHA256

910222c58e9a584fe4015ef10462470b320b624d7b56056b3ffcf7ea2f479b80
SHA512

5f2251f3b017ee9103416928d23d179de716f84d21c287b441d05130b8102df9b8fe616a46a15e62ad524f27b99beb755949ab0d79c1ef9d77b25eb079076c1a
SSDEEP

49152:Xv+e821/aQWl8P0lSk3aKA3Z+ndBxNESEzk/iNLoGdWLTHHB72eh2NT:Xv9821/aQWl8P0lSk3DA3Z+nbxmF

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

performance-ha.gl.at.ply.gg:33365

performance-ha.gl.at.ply.gg:13678

Mutex

ba5220e2-c4e8-4381-aad8-a85115ef955e

Attributes

encryption_key
67C139F3E9A16FF8132A3DCF42197B8BA3C38609
install_name
Client.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 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2860-1-0x0000000000F00000-0x0000000001224000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar
behavioral1/memory/2052-7-0x0000000000850000-0x0000000000B74000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

Processes:

Client.exe

pid process

2052 Client.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:

27dad1cf69f9cb558f4d975c8bf34faa.exeClient.exe

description pid process

Token: SeDebugPrivilege 2860 27dad1cf69f9cb558f4d975c8bf34faa.exe
Token: SeDebugPrivilege 2052 Client.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

Client.exe

pid process

2052 Client.exe
Suspicious use of SendNotifyMessage 1 IoCs

Processes:

Client.exe

pid process

2052 Client.exe

pid	process
2052	Client.exe

description	pid	process
Token: SeDebugPrivilege	2860	27dad1cf69f9cb558f4d975c8bf34faa.exe
Token: SeDebugPrivilege	2052	Client.exe

pid	process
2052	Client.exe

pid	process
2052	Client.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

27dad1cf69f9cb558f4d975c8bf34faa.exe

description	pid	process	target process
PID 2860 wrote to memory of 2052	2860	27dad1cf69f9cb558f4d975c8bf34faa.exe	Client.exe
PID 2860 wrote to memory of 2052	2860	27dad1cf69f9cb558f4d975c8bf34faa.exe	Client.exe
PID 2860 wrote to memory of 2052	2860	27dad1cf69f9cb558f4d975c8bf34faa.exe	Client.exe

C:\Users\Admin\AppData\Local\Temp\27dad1cf69f9cb558f4d975c8bf34faa.exe
"C:\Users\Admin\AppData\Local\Temp\27dad1cf69f9cb558f4d975c8bf34faa.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2860

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2052

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
Filesize
3.1MB

MD5
27dad1cf69f9cb558f4d975c8bf34faa

SHA1
ea7beaa366b83b6e8410b10cdf055d08df49c907

SHA256
910222c58e9a584fe4015ef10462470b320b624d7b56056b3ffcf7ea2f479b80

SHA512
5f2251f3b017ee9103416928d23d179de716f84d21c287b441d05130b8102df9b8fe616a46a15e62ad524f27b99beb755949ab0d79c1ef9d77b25eb079076c1a

Download Submit
memory/2052-7-0x0000000000850000-0x0000000000B74000-memory.dmp

Filesize
3.1MB

Download
memory/2052-9-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

Filesize
9.9MB

Download
memory/2052-10-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

Filesize
9.9MB

Download
memory/2052-11-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

Filesize
9.9MB

Download
memory/2860-0-0x000007FEF5413000-0x000007FEF5414000-memory.dmp

Filesize
4KB

Download
memory/2860-1-0x0000000000F00000-0x0000000001224000-memory.dmp

Filesize
3.1MB

Download
memory/2860-2-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

Filesize
9.9MB

Download
memory/2860-8-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

Filesize
9.9MB

Download