quasar | ee77b42fb254cef1f950668b0be51d87239d5134f0f92819fd8da1093fc8ced5

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-11-2024 20:41

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General

Target

4dd83334fef3b9d7e5067482cec38477.exe
Size

1.2MB
MD5

4dd83334fef3b9d7e5067482cec38477
SHA1

ccc0dbee8923d7232471c654451bffa36adffbad
SHA256

ee77b42fb254cef1f950668b0be51d87239d5134f0f92819fd8da1093fc8ced5
SHA512

84c15c60e87346208c7964db16a80f36f4f6981c5ebedcef072aaa0090c087c0d879841eeabf516a9432be48d6ddb35ee0f9739baa4085d0a60cc118fd6e6aec
SSDEEP

24576:Currek0x+kDlM+BCUlNGfnUvlZTF6DU+acRIwc8CNdlltK:CurSk0xx+opMGlZTT+XxEtK

Score

10^/10

quasar newzzz execution spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

newzzz

193.124.205.71:5228

Mutex

a4f616c8-d1cd-4f76-ba66-226e115aa50e

Attributes

encryption_key
133BC02FFBBFFB2A15EC33D664C8D9C62CB17983
install_name
Client.exe
log_directory
Cast
reconnect_delay
3000
startup_key
SubDir
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/4008-32-0x000000001BE00000-0x000000001C124000-memory.dmp	family_quasar

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

Processes:

powershell.exe

pid	Process
1536	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:

4dd83334fef3b9d7e5067482cec38477.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	4dd83334fef3b9d7e5067482cec38477.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exepowershell.exe

pid	Process
4084	powershell.exe
4084	powershell.exe
1536	powershell.exe
1536	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

4dd83334fef3b9d7e5067482cec38477.exepowershell.exepowershell.exe

description	pid	Process
Token: SeDebugPrivilege	4008	4dd83334fef3b9d7e5067482cec38477.exe
Token: SeDebugPrivilege	4084	powershell.exe
Token: SeIncreaseQuotaPrivilege	4084	powershell.exe
Token: SeSecurityPrivilege	4084	powershell.exe
Token: SeTakeOwnershipPrivilege	4084	powershell.exe
Token: SeLoadDriverPrivilege	4084	powershell.exe
Token: SeSystemProfilePrivilege	4084	powershell.exe
Token: SeSystemtimePrivilege	4084	powershell.exe
Token: SeProfSingleProcessPrivilege	4084	powershell.exe
Token: SeIncBasePriorityPrivilege	4084	powershell.exe
Token: SeCreatePagefilePrivilege	4084	powershell.exe
Token: SeBackupPrivilege	4084	powershell.exe
Token: SeRestorePrivilege	4084	powershell.exe
Token: SeShutdownPrivilege	4084	powershell.exe
Token: SeDebugPrivilege	4084	powershell.exe
Token: SeSystemEnvironmentPrivilege	4084	powershell.exe
Token: SeRemoteShutdownPrivilege	4084	powershell.exe
Token: SeUndockPrivilege	4084	powershell.exe
Token: SeManageVolumePrivilege	4084	powershell.exe
Token: 33	4084	powershell.exe
Token: 34	4084	powershell.exe
Token: 35	4084	powershell.exe
Token: 36	4084	powershell.exe
Token: SeDebugPrivilege	1536	powershell.exe
Token: SeIncreaseQuotaPrivilege	1536	powershell.exe
Token: SeSecurityPrivilege	1536	powershell.exe
Token: SeTakeOwnershipPrivilege	1536	powershell.exe
Token: SeLoadDriverPrivilege	1536	powershell.exe
Token: SeSystemProfilePrivilege	1536	powershell.exe
Token: SeSystemtimePrivilege	1536	powershell.exe
Token: SeProfSingleProcessPrivilege	1536	powershell.exe
Token: SeIncBasePriorityPrivilege	1536	powershell.exe
Token: SeCreatePagefilePrivilege	1536	powershell.exe
Token: SeBackupPrivilege	1536	powershell.exe
Token: SeRestorePrivilege	1536	powershell.exe
Token: SeShutdownPrivilege	1536	powershell.exe
Token: SeDebugPrivilege	1536	powershell.exe
Token: SeSystemEnvironmentPrivilege	1536	powershell.exe
Token: SeRemoteShutdownPrivilege	1536	powershell.exe
Token: SeUndockPrivilege	1536	powershell.exe
Token: SeManageVolumePrivilege	1536	powershell.exe
Token: 33	1536	powershell.exe
Token: 34	1536	powershell.exe
Token: 35	1536	powershell.exe
Token: 36	1536	powershell.exe
Token: SeIncreaseQuotaPrivilege	1536	powershell.exe
Token: SeSecurityPrivilege	1536	powershell.exe
Token: SeTakeOwnershipPrivilege	1536	powershell.exe
Token: SeLoadDriverPrivilege	1536	powershell.exe
Token: SeSystemProfilePrivilege	1536	powershell.exe
Token: SeSystemtimePrivilege	1536	powershell.exe
Token: SeProfSingleProcessPrivilege	1536	powershell.exe
Token: SeIncBasePriorityPrivilege	1536	powershell.exe
Token: SeCreatePagefilePrivilege	1536	powershell.exe
Token: SeBackupPrivilege	1536	powershell.exe
Token: SeRestorePrivilege	1536	powershell.exe
Token: SeShutdownPrivilege	1536	powershell.exe
Token: SeDebugPrivilege	1536	powershell.exe
Token: SeSystemEnvironmentPrivilege	1536	powershell.exe
Token: SeRemoteShutdownPrivilege	1536	powershell.exe
Token: SeUndockPrivilege	1536	powershell.exe
Token: SeManageVolumePrivilege	1536	powershell.exe
Token: 33	1536	powershell.exe
Token: 34	1536	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

4dd83334fef3b9d7e5067482cec38477.exe

pid	Process
4008	4dd83334fef3b9d7e5067482cec38477.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

4dd83334fef3b9d7e5067482cec38477.exe

description	pid	Process	procid_target
PID 4008 wrote to memory of 4084	4008	4dd83334fef3b9d7e5067482cec38477.exe	85
PID 4008 wrote to memory of 4084	4008	4dd83334fef3b9d7e5067482cec38477.exe	85
PID 4008 wrote to memory of 1536	4008	4dd83334fef3b9d7e5067482cec38477.exe	89
PID 4008 wrote to memory of 1536	4008	4dd83334fef3b9d7e5067482cec38477.exe	89

C:\Users\Admin\AppData\Local\Temp\4dd83334fef3b9d7e5067482cec38477.exe
"C:\Users\Admin\AppData\Local\Temp\4dd83334fef3b9d7e5067482cec38477.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4008
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" [Console]::Title = ((Get-ScheduledTask).Actions.Execute -join '').Contains('C:\Users\Admin\AppData\Local\Temp\4dd83334fef3b9d7e5067482cec38477')
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4084
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'OneNote startup_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\SCV.cmd') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1536

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

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
3KB

MD5
661739d384d9dfd807a089721202900b

SHA1
5b2c5d6a7122b4ce849dc98e79a7713038feac55

SHA256
70c3ecbaa6df88e88df4efc70968502955e890a2248269641c4e2d4668ef61bf

SHA512
81b48ae5c4064c4d9597303d913e32d3954954ba1c8123731d503d1653a0d848856812d2ee6951efe06b1db2b91a50e5d54098f60c26f36bc8390203f4c8a2d8

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

Filesize
1KB

MD5
4373abae4880a277a3859f5734143a19

SHA1
a71759a565541fba5e1ee8d3fceee7645ed75054

SHA256
f151ef7e7996f479ba2ab9334d50ff36ae85917c4451614a254b121d328eb607

SHA512
0af72c0f2ff8716e99a84e67ef4bb921e389459b90f76ca17340384aabcdf41a10c2191801c8d343b649cb547ea8182ca367b7aa6176d7304394be4b9bfe8718

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_s4lmx2ik.4gh.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4008-32-0x000000001BE00000-0x000000001C124000-memory.dmp

Filesize
3.1MB

Download
memory/4008-1-0x0000000000740000-0x0000000000872000-memory.dmp

Filesize
1.2MB

Download
memory/4008-39-0x000000001D1D0000-0x000000001D20C000-memory.dmp

Filesize
240KB

Download
memory/4008-0-0x00007FF8CE2F3000-0x00007FF8CE2F5000-memory.dmp

Filesize
8KB

Download
memory/4008-38-0x000000001C660000-0x000000001C672000-memory.dmp

Filesize
72KB

Download
memory/4008-37-0x00007FF8CE2F3000-0x00007FF8CE2F5000-memory.dmp

Filesize
8KB

Download
memory/4008-34-0x000000001C6D0000-0x000000001C782000-memory.dmp

Filesize
712KB

Download
memory/4008-33-0x000000001BD90000-0x000000001BDE0000-memory.dmp

Filesize
320KB

Download
memory/4084-12-0x00007FF8CE2F0000-0x00007FF8CEDB1000-memory.dmp

Filesize
10.8MB

Download
memory/4084-18-0x00007FF8CE2F0000-0x00007FF8CEDB1000-memory.dmp

Filesize
10.8MB

Download
memory/4084-17-0x00007FF8CE2F0000-0x00007FF8CEDB1000-memory.dmp

Filesize
10.8MB

Download
memory/4084-14-0x00007FF8CE2F0000-0x00007FF8CEDB1000-memory.dmp

Filesize
10.8MB

Download
memory/4084-13-0x00007FF8CE2F0000-0x00007FF8CEDB1000-memory.dmp

Filesize
10.8MB

Download
memory/4084-2-0x000002DBA2170000-0x000002DBA2192000-memory.dmp

Filesize
136KB

Download