quasar | 5cc8c3c4d011cdbe7306dfb8ba52b14909ed06db2c1a465c31cc59e6f532cb22

Reason

Machine shutdown

General

Target

Psloramyra.ps1
Size

2.1MB
MD5

032ea6f45fdd2fa1bd9b6cb5f425dc54
SHA1

aaac83baf4a939a4c3b9ff5a16dbcb472cab9592
SHA256

5cc8c3c4d011cdbe7306dfb8ba52b14909ed06db2c1a465c31cc59e6f532cb22
SHA512

222ca7941b7df2d2e4d7310a557cc6cdb43c33368d9632610b428b1a117a5c272504dae677216b678e4c65887f779f60078dd6096a1280aa834b1a3fcb97c379
SSDEEP

6144:ccVzJb1d4aU/hQVBJ2A7Is2Csr1l5mH9OdHUb3ngo1:v

Score

10^/10

quasar office04 discovery execution spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Office04

C2

ronymahmoud.casacam.net:4782

seznam.hopto.org:4782

Mutex

QSR_MUTEX_mn85pQSh0eqrA3kPek

Attributes

encryption_key
EjggXOgdqRrj8wGQ7mTy
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

Processes:

resource	yara_rule
behavioral2/memory/1404-35-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Using powershell.exe command.
execution

PowerShell
T1059.001

Processes:

powershell.exepowershell.exe

pid process

452 powershell.exe
2568 powershell.exe
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

WScript.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation WScript.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.

Processes:

flow ioc

39 ip-api.com
Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description pid process target process

PID 2568 set thread context of 1404 2568 powershell.exe RegSvcs.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
452	powershell.exe
2568	powershell.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	WScript.exe

flow	ioc
39	ip-api.com

description	pid	process	target process
PID 2568 set thread context of 1404	2568	powershell.exe	RegSvcs.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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

Processes:

RegSvcs.exeshutdown.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	shutdown.exe

Modifies data under HKEY_USERS 15 IoCs

Processes:

LogonUI.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "59"	LogonUI.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exepowershell.exe

pid process

452 powershell.exe
452 powershell.exe
2568 powershell.exe
2568 powershell.exe

pid	process
452	powershell.exe
452	powershell.exe
2568	powershell.exe
2568	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

powershell.exepowershell.exeRegSvcs.exeshutdown.exe

description	pid	process
Token: SeDebugPrivilege	452	powershell.exe
Token: SeDebugPrivilege	2568	powershell.exe
Token: SeDebugPrivilege	1404	RegSvcs.exe
Token: SeShutdownPrivilege	4484	shutdown.exe
Token: SeRemoteShutdownPrivilege	4484	shutdown.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

LogonUI.exe

pid process

4536 LogonUI.exe

pid	process
4536	LogonUI.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

WScript.execmd.exepowershell.exeRegSvcs.exe

description	pid	process	target process
PID 4880 wrote to memory of 4368	4880	WScript.exe	cmd.exe
PID 4880 wrote to memory of 4368	4880	WScript.exe	cmd.exe
PID 4368 wrote to memory of 2568	4368	cmd.exe	powershell.exe
PID 4368 wrote to memory of 2568	4368	cmd.exe	powershell.exe
PID 2568 wrote to memory of 1404	2568	powershell.exe	RegSvcs.exe
PID 2568 wrote to memory of 1404	2568	powershell.exe	RegSvcs.exe
PID 2568 wrote to memory of 1404	2568	powershell.exe	RegSvcs.exe
PID 2568 wrote to memory of 1404	2568	powershell.exe	RegSvcs.exe
PID 2568 wrote to memory of 1404	2568	powershell.exe	RegSvcs.exe
PID 2568 wrote to memory of 1404	2568	powershell.exe	RegSvcs.exe
PID 2568 wrote to memory of 1404	2568	powershell.exe	RegSvcs.exe
PID 2568 wrote to memory of 1404	2568	powershell.exe	RegSvcs.exe
PID 1404 wrote to memory of 4484	1404	RegSvcs.exe	shutdown.exe
PID 1404 wrote to memory of 4484	1404	RegSvcs.exe	shutdown.exe
PID 1404 wrote to memory of 4484	1404	RegSvcs.exe	shutdown.exe

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\Psloramyra.ps1
1⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:452

C:\Windows\System32\WScript.exe
C:\Windows\System32\WScript.exe "C:\Users\Public\roox.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4880
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Public\roox.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4368
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -NoProfile -WindowStyle Hidden -ExecutionPolicy Bypass -Command "& 'C:\Users\Public\roox.ps1'"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2568
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1404
    - - C:\Windows\SysWOW64\shutdown.exe
        
        "C:\Windows\System32\shutdown.exe" /s /t 0
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious use of AdjustPrivilegeToken
        
        PID:4484

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa393c855 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:4536

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
2KB

MD5
2f57fde6b33e89a63cf0dfdd6e60a351

SHA1
445bf1b07223a04f8a159581a3d37d630273010f

SHA256
3b0068d29ae4b20c447227fbf410aa2deedfef6220ccc3f698f3c7707c032c55

SHA512
42857c5f111bfa163e9f4ea6b81a42233d0bbb0836ecc703ce7e8011b6f8a8eca761f39adc3ed026c9a2f99206d88bab9bddb42da9113e478a31a6382af5c220

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
e5bfec1063a497048fffb231a0621403

SHA1
97cf6a89f237f43b9c22e3e081f7d45924d435ba

SHA256
325d1ffa65e9593a834f3662168d0c1950de148c63f1e43b86727087f3881d6f

SHA512
e38c5189054cf09fb15de017d0bbe226338124ee02bb04530943c8fcfc303dbe5fe5fd28c9c1aea1b552d1a2b0b76cabbedd284a38a07d41ec9cf9e55b44dd0e

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ui4uk35d.kqf.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Public\roox.bat

Filesize
195B

MD5
0344d401c7266a2bc6d19f5a2bc90040

SHA1
d3bf5a4b55b523429f3c7cb58ffa19504bececfc

SHA256
a3a38fb5090f5b9c951160d60d2fcd0e4488b3e72b1823fc17ef34a15fe9dab7

SHA512
59b448d02dadd2934abf88c40e25fec741724112e1320770b06df9b862643f2eba9cedee9d58244145fbece6d0d366380d6d2d6b56082a97649683ca10f9bc07

Download Submit
C:\Users\Public\roox.ps1

Filesize
2.1MB

MD5
9ba3e0c0ba321f160209023c4fdcc3d4

SHA1
55f876754d36ab08a3e8f0a47d39c48b8a84fb61

SHA256
a2fde94bdfe9e8d15478484c3de0314a73618f41591cbffca473708c66899e39

SHA512
cd551a87d48421748a9e8c90eeecbd48a185be5b7439e2d35ac994da07bc94ee77f48678b7f617423bb9356dabc20f62ec77be24ddbd60e34d0927fde350e650

Download Submit
C:\Users\Public\roox.vbs

Filesize
686B

MD5
a0a3c05080df4421295e559291304405

SHA1
286e02a003b7e26a381e41d2127ffb0ed371f5b4

SHA256
22889b8d447ea679e8b2fb27eca95d0f04056203c9214818758b0a21379ea323

SHA512
ee9971cda442f9dd305e0810babd0a5f94589a966b2a4f10421b341d6e7914fed3f2a12821dc56d338f7ec5ba9a38830727d0e17fd18257e45ebabd7612e99b4

Download Submit
memory/452-16-0x00007FFFD6ED0000-0x00007FFFD7991000-memory.dmp

Filesize
10.8MB

Download
memory/452-19-0x00007FFFD6ED0000-0x00007FFFD7991000-memory.dmp

Filesize
10.8MB

Download
memory/452-0-0x00007FFFD6ED3000-0x00007FFFD6ED5000-memory.dmp

Filesize
8KB

Download
memory/452-12-0x00007FFFD6ED0000-0x00007FFFD7991000-memory.dmp

Filesize
10.8MB

Download
memory/452-11-0x00007FFFD6ED0000-0x00007FFFD7991000-memory.dmp

Filesize
10.8MB

Download
memory/452-6-0x000001BB71240000-0x000001BB71262000-memory.dmp

Filesize
136KB

Download
memory/1404-35-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/1404-37-0x0000000005C80000-0x0000000006224000-memory.dmp

Filesize
5.6MB

Download
memory/1404-38-0x00000000056D0000-0x0000000005762000-memory.dmp

Filesize
584KB

Download
memory/1404-39-0x0000000005770000-0x00000000057D6000-memory.dmp

Filesize
408KB

Download
memory/1404-40-0x0000000005C10000-0x0000000005C22000-memory.dmp

Filesize
72KB

Download
memory/1404-41-0x0000000006910000-0x000000000694C000-memory.dmp

Filesize
240KB

Download
memory/1404-42-0x0000000007030000-0x000000000703A000-memory.dmp

Filesize
40KB

Download
memory/2568-34-0x00000168E1E30000-0x00000168E1E4A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads