quasar | 910222c58e9a584fe4015ef10462470b320b624d7b56056b3ffcf7ea2f479b80

Analysis

max time kernel
144s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-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 2 IoCs

Processes:

resource yara_rule

behavioral2/memory/2184-1-0x0000000000B60000-0x0000000000E84000-memory.dmp family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe family_quasar
Executes dropped EXE 1 IoCs

Processes:

Client.exe

pid process

1968 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 2184 27dad1cf69f9cb558f4d975c8bf34faa.exe
Token: SeDebugPrivilege 1968 Client.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

Client.exe

pid process

1968 Client.exe
Suspicious use of SendNotifyMessage 1 IoCs

Processes:

Client.exe

pid process

1968 Client.exe

resource	yara_rule
behavioral2/memory/2184-1-0x0000000000B60000-0x0000000000E84000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar

pid	process
1968	Client.exe

description	pid	process
Token: SeDebugPrivilege	2184	27dad1cf69f9cb558f4d975c8bf34faa.exe
Token: SeDebugPrivilege	1968	Client.exe

pid	process
1968	Client.exe

pid	process
1968	Client.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

27dad1cf69f9cb558f4d975c8bf34faa.exe

description	pid	process	target process
PID 2184 wrote to memory of 1968	2184	27dad1cf69f9cb558f4d975c8bf34faa.exe	Client.exe
PID 2184 wrote to memory of 1968	2184	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:2184

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:1968

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=4060 --field-trial-handle=3240,i,13319578961094268484,16557498665191861597,262144 --variations-seed-version /prefetch:8
1⤵
PID:4328

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/1968-9-0x00007FF9872D0000-0x00007FF987D91000-memory.dmp

Filesize
10.8MB

Download
memory/1968-11-0x00007FF9872D0000-0x00007FF987D91000-memory.dmp

Filesize
10.8MB

Download
memory/1968-13-0x00007FF9872D0000-0x00007FF987D91000-memory.dmp

Filesize
10.8MB

Download
memory/1968-14-0x000000001C6A0000-0x000000001C6F0000-memory.dmp

Filesize
320KB

Download
memory/1968-15-0x000000001C7B0000-0x000000001C862000-memory.dmp

Filesize
712KB

Download
memory/2184-0-0x00007FF9872D3000-0x00007FF9872D5000-memory.dmp

Filesize
8KB

Download
memory/2184-1-0x0000000000B60000-0x0000000000E84000-memory.dmp

Filesize
3.1MB

Download
memory/2184-2-0x00007FF9872D0000-0x00007FF987D91000-memory.dmp

Filesize
10.8MB

Download
memory/2184-3-0x00007FF9872D3000-0x00007FF9872D5000-memory.dmp

Filesize
8KB

Download
memory/2184-4-0x00007FF9872D0000-0x00007FF987D91000-memory.dmp

Filesize
10.8MB

Download
memory/2184-12-0x00007FF9872D0000-0x00007FF987D91000-memory.dmp

Filesize
10.8MB

Download