quasar | e815640357032206eb40f35f30804f4bb0cb14addf9858cdc36297b583b3cbfa

Analysis

max time kernel
128s
max time network
144s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
02-01-2025 00:31

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General

Target

Client-built.exe
Size

3.1MB
MD5

2c55c3ba3aa93887c266436bcaaae5c4
SHA1

0e20e8a15bbf5efd0bf927e49ffc8237e691951c
SHA256

e815640357032206eb40f35f30804f4bb0cb14addf9858cdc36297b583b3cbfa
SHA512

ffe786d730e8de697a41ac89e449de7717d2aee09e4ef5653268d8d584d798a89c132ca5f32051c07a99378cf0ff6b45a8fc2ab99c53bab0fc3b4a74cd4b5968
SSDEEP

49152:6vbI22SsaNYfdPBldt698dBcjHgk/LWmzAwoGdu8THHB72eh2NT:6vk22SsaNYfdPBldt6+dBcjHp/Lx+

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

192.168.100.244:443

Mutex

e4b3274f-fb75-4407-9316-141c32c7c7ca

Attributes

encryption_key
53FC47CB30FD7835477E4751610AF9D6FC6D5AFB
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 family
quasar

Quasar payload 1 IoCs

resource	yara_rule
behavioral1/memory/2448-1-0x0000000000AE0000-0x0000000000E04000-memory.dmp	family_quasar

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2448	Client-built.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2448	Client-built.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2448	Client-built.exe

C:\Users\Admin\AppData\Local\Temp\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2448

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

memory/2448-0-0x000007FEF5B13000-0x000007FEF5B14000-memory.dmp

Filesize
4KB

Download
memory/2448-1-0x0000000000AE0000-0x0000000000E04000-memory.dmp

Filesize
3.1MB

Download
memory/2448-2-0x000007FEF5B10000-0x000007FEF64FC000-memory.dmp

Filesize
9.9MB

Download
memory/2448-3-0x000007FEF5B13000-0x000007FEF5B14000-memory.dmp

Filesize
4KB

Download
memory/2448-4-0x000007FEF5B10000-0x000007FEF64FC000-memory.dmp

Filesize
9.9MB

Download