quasar | 3496b253962f9fad33450751e615e676ad8f847d11c50df45a35647b2534755d

Analysis

max time kernel
146s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-12-2024 09:23

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General

Target

x.ps1
Size

2.0MB
MD5

97646b99bb7245a7be3bbe8a0ff06348
SHA1

33edac8a75cac4a0a1d084174b3dc912b9744386
SHA256

3496b253962f9fad33450751e615e676ad8f847d11c50df45a35647b2534755d
SHA512

066b635e03bf515f75327388d7118560fbf84fe4d5b64740c3b5a101123650ccb9d9252597301b78bf3a4849a57d73bd3f12192531e856fc6fbbce4b66571b2b
SSDEEP

24576:bSgmuyXfET5YN3b2LLG1z/7E4/KpdMJczdsrbI8:biMSNKLq1zjA2

Score

10^/10

quasar mugz discovery execution spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

MuGz

feature-ssa.mywire.org:1177

Mutex

QSR_MUTEX_nCFXZUEaa8h2uJHNCI

Attributes

encryption_key
1aBF7porNDMtf63sHjM2
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
behavioral2/memory/3116-33-0x0000000000400000-0x000000000041A000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

pid	Process
3652	AutoHotkey64.exe
4772	AutoHotkey64.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
14	ip-api.com

Suspicious use of SetThreadContext 10 IoCs

description	pid	Process	procid_target
PID 3652 set thread context of 5076	3652	AutoHotkey64.exe	85
PID 3652 set thread context of 3304	3652	AutoHotkey64.exe	86
PID 3652 set thread context of 3368	3652	AutoHotkey64.exe	87
PID 3652 set thread context of 3116	3652	AutoHotkey64.exe	88
PID 3652 set thread context of 1108	3652	AutoHotkey64.exe	89
PID 4772 set thread context of 4244	4772	AutoHotkey64.exe	100
PID 4772 set thread context of 1248	4772	AutoHotkey64.exe	101
PID 4772 set thread context of 1624	4772	AutoHotkey64.exe	102
PID 4772 set thread context of 4972	4772	AutoHotkey64.exe	103
PID 4772 set thread context of 4396	4772	AutoHotkey64.exe	104

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3980	powershell.exe

System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3460	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3980	powershell.exe
3980	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3980	powershell.exe
Token: SeDebugPrivilege	3304	AddInProcess32.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
3652	AutoHotkey64.exe
3652	AutoHotkey64.exe
4772	AutoHotkey64.exe
4772	AutoHotkey64.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
3652	AutoHotkey64.exe
3652	AutoHotkey64.exe
4772	AutoHotkey64.exe
4772	AutoHotkey64.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3304	AddInProcess32.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3980 wrote to memory of 3652	3980	powershell.exe	83
PID 3980 wrote to memory of 3652	3980	powershell.exe	83
PID 3980 wrote to memory of 3460	3980	powershell.exe	84
PID 3980 wrote to memory of 3460	3980	powershell.exe	84
PID 3652 wrote to memory of 5076	3652	AutoHotkey64.exe	85
PID 3652 wrote to memory of 5076	3652	AutoHotkey64.exe	85
PID 3652 wrote to memory of 5076	3652	AutoHotkey64.exe	85
PID 3652 wrote to memory of 5076	3652	AutoHotkey64.exe	85
PID 3652 wrote to memory of 5076	3652	AutoHotkey64.exe	85
PID 3652 wrote to memory of 5076	3652	AutoHotkey64.exe	85
PID 3652 wrote to memory of 5076	3652	AutoHotkey64.exe	85
PID 3652 wrote to memory of 5076	3652	AutoHotkey64.exe	85
PID 3652 wrote to memory of 3304	3652	AutoHotkey64.exe	86
PID 3652 wrote to memory of 3304	3652	AutoHotkey64.exe	86
PID 3652 wrote to memory of 3304	3652	AutoHotkey64.exe	86
PID 3652 wrote to memory of 3304	3652	AutoHotkey64.exe	86
PID 3652 wrote to memory of 3304	3652	AutoHotkey64.exe	86
PID 3652 wrote to memory of 3304	3652	AutoHotkey64.exe	86
PID 3652 wrote to memory of 3304	3652	AutoHotkey64.exe	86
PID 3652 wrote to memory of 3304	3652	AutoHotkey64.exe	86
PID 3652 wrote to memory of 3368	3652	AutoHotkey64.exe	87
PID 3652 wrote to memory of 3368	3652	AutoHotkey64.exe	87
PID 3652 wrote to memory of 3368	3652	AutoHotkey64.exe	87
PID 3652 wrote to memory of 3368	3652	AutoHotkey64.exe	87
PID 3652 wrote to memory of 3368	3652	AutoHotkey64.exe	87
PID 3652 wrote to memory of 3368	3652	AutoHotkey64.exe	87
PID 3652 wrote to memory of 3368	3652	AutoHotkey64.exe	87
PID 3652 wrote to memory of 3368	3652	AutoHotkey64.exe	87
PID 3652 wrote to memory of 3116	3652	AutoHotkey64.exe	88
PID 3652 wrote to memory of 3116	3652	AutoHotkey64.exe	88
PID 3652 wrote to memory of 3116	3652	AutoHotkey64.exe	88
PID 3652 wrote to memory of 3116	3652	AutoHotkey64.exe	88
PID 3652 wrote to memory of 3116	3652	AutoHotkey64.exe	88
PID 3652 wrote to memory of 3116	3652	AutoHotkey64.exe	88
PID 3652 wrote to memory of 3116	3652	AutoHotkey64.exe	88
PID 3652 wrote to memory of 3116	3652	AutoHotkey64.exe	88
PID 3652 wrote to memory of 1108	3652	AutoHotkey64.exe	89
PID 3652 wrote to memory of 1108	3652	AutoHotkey64.exe	89
PID 3652 wrote to memory of 1108	3652	AutoHotkey64.exe	89
PID 3652 wrote to memory of 1108	3652	AutoHotkey64.exe	89
PID 3652 wrote to memory of 1108	3652	AutoHotkey64.exe	89
PID 3652 wrote to memory of 1108	3652	AutoHotkey64.exe	89
PID 3652 wrote to memory of 1108	3652	AutoHotkey64.exe	89
PID 3652 wrote to memory of 1108	3652	AutoHotkey64.exe	89
PID 4772 wrote to memory of 4244	4772	AutoHotkey64.exe	100
PID 4772 wrote to memory of 4244	4772	AutoHotkey64.exe	100
PID 4772 wrote to memory of 4244	4772	AutoHotkey64.exe	100
PID 4772 wrote to memory of 4244	4772	AutoHotkey64.exe	100
PID 4772 wrote to memory of 4244	4772	AutoHotkey64.exe	100
PID 4772 wrote to memory of 4244	4772	AutoHotkey64.exe	100
PID 4772 wrote to memory of 4244	4772	AutoHotkey64.exe	100
PID 4772 wrote to memory of 4244	4772	AutoHotkey64.exe	100
PID 4772 wrote to memory of 1248	4772	AutoHotkey64.exe	101
PID 4772 wrote to memory of 1248	4772	AutoHotkey64.exe	101
PID 4772 wrote to memory of 1248	4772	AutoHotkey64.exe	101
PID 4772 wrote to memory of 1248	4772	AutoHotkey64.exe	101
PID 4772 wrote to memory of 1248	4772	AutoHotkey64.exe	101
PID 4772 wrote to memory of 1248	4772	AutoHotkey64.exe	101
PID 4772 wrote to memory of 1248	4772	AutoHotkey64.exe	101
PID 4772 wrote to memory of 1248	4772	AutoHotkey64.exe	101
PID 4772 wrote to memory of 1624	4772	AutoHotkey64.exe	102
PID 4772 wrote to memory of 1624	4772	AutoHotkey64.exe	102
PID 4772 wrote to memory of 1624	4772	AutoHotkey64.exe	102
PID 4772 wrote to memory of 1624	4772	AutoHotkey64.exe	102

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\x.ps1
1⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3980
- C:\Users\Public\Documents\AutoHotkey64.exe
  "C:\Users\Public\Documents\AutoHotkey64.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:3652
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5076
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:3304
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3368
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3116
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1108
- C:\Windows\system32\schtasks.exe
  "C:\Windows\system32\schtasks.exe" /create /tn 3losh /tr C:\Users\Public\Documents\AutoHotkey64.exe /sc minute /mo 2 /st 09:25 /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3460

C:\Users\Public\Documents\AutoHotkey64.exe
C:\Users\Public\Documents\AutoHotkey64.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4772
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4244
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1248
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1624
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4972
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4396

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\AddInProcess32.exe.log

Filesize
609B

MD5
f78129c2d7c98a4397fa4931b11feef4

SHA1
ea26f38d12515741651ff161ea8393d5fa41a5bd

SHA256
29830390784d06271342237443b6224bb98be0539e34b64e7344c78d7cdd93d9

SHA512
cbca1d486c2bd7655752930b9020ccf3f8ae67a67dcb2cca51c31763a51fea8fb951d617c31a3746680303a8c6d45361c120f15ef06c30b417202949728b5b35

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wylljkg0.ri2.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Public\Documents\A.txt

Filesize
335KB

MD5
9b901a1386e04b0b0e5cc79a145c0e61

SHA1
53555bc6be482b80dce9bb175474abf48b72bd40

SHA256
17409213d1370b4b30c07cd73b33ec7ee7ceb78245082654831bcd35b555b290

SHA512
8572814fb3b14fb3adf2f36263c13d7a38603e53754bdba78ae16fa908a921c8c36f110a45778a76152c0698f545538454a5eef2fb2daca3146985b35b43ec36

Download Submit
C:\Users\Public\Documents\AutoHotkey64.ahk

Filesize
6KB

MD5
a51d3cc02396652ac39de494e7d725d6

SHA1
e4659a4561ac38659f7786f78485086aa1573036

SHA256
d2fb28bbafa9b105bed3334225778451529cbb2f847594021cccfab7f7d69c5d

SHA512
a4d2d3ca7d4d7ca7dcdcd8f7a46004ade1cff22f335b488972070d83602fb30d0b684fda4cd2677ccefb7afdabceb1d642152759b2f6c1796f3011dad272dda8

Download Submit
C:\Users\Public\Documents\AutoHotkey64.exe

Filesize
1.3MB

MD5
2d0600fe2b1b3bdc45d833ca32a37fdb

SHA1
e9a7411bfef54050de3b485833556f84cabd6e41

SHA256
effdea83c6b7a1dc2ce9e9d40e91dfd59bed9fcbd580903423648b7ca97d9696

SHA512
9891cd6d2140c3a5c20d5c2d6600f3655df437b99b09ae0f9daf1983190dc73385cc87f02508997bb696ac921eee43fccdf1dc210cc602938807bdb062ce1703

Download Submit
memory/1108-35-0x0000000005050000-0x00000000050E2000-memory.dmp

Filesize
584KB

Download
memory/3116-33-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/3304-36-0x0000000004D60000-0x0000000004D72000-memory.dmp

Filesize
72KB

Download
memory/3304-34-0x0000000005380000-0x0000000005924000-memory.dmp

Filesize
5.6MB

Download
memory/3304-46-0x0000000006600000-0x0000000006612000-memory.dmp

Filesize
72KB

Download
memory/3304-45-0x0000000006170000-0x00000000061D6000-memory.dmp

Filesize
408KB

Download
memory/3304-44-0x0000000005AA0000-0x0000000005AAA000-memory.dmp

Filesize
40KB

Download
memory/3304-43-0x0000000005AB0000-0x0000000005AEC000-memory.dmp

Filesize
240KB

Download
memory/3980-32-0x00007FFDBF310000-0x00007FFDBFDD1000-memory.dmp

Filesize
10.8MB

Download
memory/3980-11-0x00007FFDBF310000-0x00007FFDBFDD1000-memory.dmp

Filesize
10.8MB

Download
memory/3980-0-0x00007FFDBF313000-0x00007FFDBF315000-memory.dmp

Filesize
8KB

Download
memory/3980-1-0x0000020B2F020000-0x0000020B2F042000-memory.dmp

Filesize
136KB

Download
memory/3980-12-0x00007FFDBF310000-0x00007FFDBFDD1000-memory.dmp

Filesize
10.8MB

Download
memory/3980-15-0x0000020B47F00000-0x0000020B47F1E000-memory.dmp

Filesize
120KB

Download
memory/3980-13-0x0000020B47F60000-0x0000020B47FD6000-memory.dmp

Filesize
472KB

Download
memory/3980-14-0x00007FFDBF310000-0x00007FFDBFDD1000-memory.dmp

Filesize
10.8MB

Download