quasar | da5afb343e753a9ff4f73a14c4e59fa8f49a62e7d6e7e9610bf954576a5d4988

Analysis

max time kernel
114s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
20-06-2024 15:51

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General

Target

test.exe
Size

3.1MB
MD5

20c7b6b7be56f902f42204d6daa1ef77
SHA1

963a4410ed2a9ae0ed7c51b89edaf3497ceb07fd
SHA256

da5afb343e753a9ff4f73a14c4e59fa8f49a62e7d6e7e9610bf954576a5d4988
SHA512

3b096f328dc987365259e3acffc728a6e8c5a2b30e30a515d552fcafc51f19a1b4a0d693047b30db8e99c9e93f1ab0ed650f62fec31aabb2434002ab6ad4b64a
SSDEEP

49152:zv3lL26AaNeWgPhlmVqvMQ7XSK8RRJ6HbR3LoGdYLzTHHB72eh2NT:zv1L26AaNeWgPhlmVqkQ7XSK8RRJ6ZI

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

material-assured.gl.at.ply.gg:32264

Mutex

5e22b217-1068-4670-8825-0d956644bffb

Attributes

encryption_key
2EEA324C975DB97EE9BDD19003D70E04CD74BAF2
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 1 IoCs

Processes:

resource yara_rule

behavioral2/memory/2296-1-0x0000000000E90000-0x00000000011B4000-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

Processes:

test.exe

description pid process

Token: SeDebugPrivilege 2296 test.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

test.exe

pid process

2296 test.exe
2296 test.exe
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

test.exe

pid process

2296 test.exe
2296 test.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

test.exe

pid process

2296 test.exe

resource	yara_rule
behavioral2/memory/2296-1-0x0000000000E90000-0x00000000011B4000-memory.dmp	family_quasar

description	pid	process
Token: SeDebugPrivilege	2296	test.exe

pid	process
2296	test.exe
2296	test.exe

pid	process
2296	test.exe
2296	test.exe

pid	process
2296	test.exe

C:\Users\Admin\AppData\Local\Temp\test.exe
"C:\Users\Admin\AppData\Local\Temp\test.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:2296

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3692 --field-trial-handle=2244,i,11878111470816612087,2265290141962607370,262144 --variations-seed-version /prefetch:8
1⤵
PID:4872

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

memory/2296-0-0x00007FFC22ED3000-0x00007FFC22ED5000-memory.dmp

Filesize
8KB

Download
memory/2296-1-0x0000000000E90000-0x00000000011B4000-memory.dmp

Filesize
3.1MB

Download
memory/2296-2-0x00007FFC22ED0000-0x00007FFC23991000-memory.dmp

Filesize
10.8MB

Download
memory/2296-3-0x000000001C9F0000-0x000000001CA40000-memory.dmp

Filesize
320KB

Download
memory/2296-4-0x000000001CB00000-0x000000001CBB2000-memory.dmp

Filesize
712KB

Download
memory/2296-5-0x00007FFC22ED3000-0x00007FFC22ED5000-memory.dmp

Filesize
8KB

Download
memory/2296-8-0x000000001CA40000-0x000000001CA52000-memory.dmp

Filesize
72KB

Download
memory/2296-9-0x000000001CAA0000-0x000000001CADC000-memory.dmp

Filesize
240KB

Download
memory/2296-10-0x00007FFC22ED0000-0x00007FFC23991000-memory.dmp

Filesize
10.8MB

Download