quasar | 2ed2177995cad18218b61c46c64ba0575dc54e87c7385ea9bb70d9ca44f18a73

Analysis

max time kernel
145s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11-11-2024 15:45

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General

Target

no virus.exe
Size

3.1MB
MD5

9facfa150b35a5985f9507eb0b68f29f
SHA1

366084ec72c2dca7434de64aecece402f3d49e06
SHA256

2ed2177995cad18218b61c46c64ba0575dc54e87c7385ea9bb70d9ca44f18a73
SHA512

e52bdcda29737634a853ccf08d41d927d82ae51299aa235b62ab868bf93c4f6b5f2cdd1400f68d3bf3a5d1d7131732569ddedb33f5d5ed0e7bf67833c01a53a9
SSDEEP

49152:XvQlL26AaNeWgPhlmVqvMQ7XSKD+RJ6ebR3LoGd41THHB72eh2NT:Xv4L26AaNeWgPhlmVqkQ7XSKD+RJ6Y

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

255.255.255.0:4782

192.168.56.1:4782

Mutex

5d8ed293-df10-4841-a52b-8692fbf47f38

Attributes

encryption_key
11B8D109A02D98C9240E47185440CD1BFD88612D
install_name
monkey.exe
log_directory
Logs
reconnect_delay
2882
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 3 IoCs

resource	yara_rule
behavioral1/memory/2232-1-0x0000000000C90000-0x0000000000FB4000-memory.dmp	family_quasar
behavioral1/files/0x00340000000191f6-5.dat	family_quasar
behavioral1/memory/2724-8-0x0000000001190000-0x00000000014B4000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2724	monkey.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

description	pid	Process
Token: SeDebugPrivilege	2232	no virus.exe
Token: SeDebugPrivilege	2724	monkey.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2724	monkey.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2724	monkey.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2232 wrote to memory of 2724	2232	no virus.exe	30
PID 2232 wrote to memory of 2724	2232	no virus.exe	30
PID 2232 wrote to memory of 2724	2232	no virus.exe	30

C:\Users\Admin\AppData\Local\Temp\no virus.exe
"C:\Users\Admin\AppData\Local\Temp\no virus.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2232
- C:\Users\Admin\AppData\Roaming\SubDir\monkey.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\monkey.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:2724

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\monkey.exe

Filesize
3.1MB

MD5
9facfa150b35a5985f9507eb0b68f29f

SHA1
366084ec72c2dca7434de64aecece402f3d49e06

SHA256
2ed2177995cad18218b61c46c64ba0575dc54e87c7385ea9bb70d9ca44f18a73

SHA512
e52bdcda29737634a853ccf08d41d927d82ae51299aa235b62ab868bf93c4f6b5f2cdd1400f68d3bf3a5d1d7131732569ddedb33f5d5ed0e7bf67833c01a53a9

Download Submit
memory/2232-0-0x000007FEF5E23000-0x000007FEF5E24000-memory.dmp

Filesize
4KB

Download
memory/2232-1-0x0000000000C90000-0x0000000000FB4000-memory.dmp

Filesize
3.1MB

Download
memory/2232-2-0x000007FEF5E20000-0x000007FEF680C000-memory.dmp

Filesize
9.9MB

Download
memory/2232-7-0x000007FEF5E20000-0x000007FEF680C000-memory.dmp

Filesize
9.9MB

Download
memory/2724-8-0x0000000001190000-0x00000000014B4000-memory.dmp

Filesize
3.1MB

Download
memory/2724-9-0x000007FEF5E20000-0x000007FEF680C000-memory.dmp

Filesize
9.9MB

Download
memory/2724-10-0x000007FEF5E20000-0x000007FEF680C000-memory.dmp

Filesize
9.9MB

Download
memory/2724-11-0x000007FEF5E20000-0x000007FEF680C000-memory.dmp

Filesize
9.9MB

Download