asyncrat | 96cea5aa04bf16efa6f0c768643013fe621e1efd5e17180e1c4d26bba2c60823

Analysis

max time kernel
139s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05/08/2024, 10:45

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

Client.exe
Size

265KB
MD5

73503a6b7502669d3937c8406cf97d22
SHA1

dc9426f95a5b53cfe949f051ec96aca42775c97e
SHA256

96cea5aa04bf16efa6f0c768643013fe621e1efd5e17180e1c4d26bba2c60823
SHA512

2314a6972f3d268fd5a9209c5fa6484e0dfb2af07154060ca54c157ef345b27a5c279c9f15d5bec25292f5908e65f250533dcf4b3261f7b7acf0946fc7feb56d
SSDEEP

3072:vviJueXGbbXBGmAtPBKCQCeLhiGGGGGGGGGGGGGGGGGGGGGGGG9YGGGnGGGGGGGV:y/XkbwHPBKCQC6hUvoJ2zG+MQ4

Score

10^/10

asyncrat windows defender discovery evasion persistence privilege_escalation rat

Malware Config

Extracted

Family

asyncrat

Version

5.0.5

Botnet

Windows Defender

mode-clusters.gl.at.ply.gg:36304

Mutex

Venom_RAT_HVNC_Mutex_Venom RAT_HVNC

Attributes

delay
1
install
true
install_file
Windows Defender.exe
install_folder
%Temp%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x000600000001e786-11.dat	family_asyncrat

Grants admin privileges 1 TTPs
Uses net.exe to modify the user's privileges.

Account Manipulation
T1098

Modifies Windows Firewall 2 TTPs 2 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
3184	netsh.exe
4208	netsh.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	Client.exe

Executes dropped EXE 1 IoCs

pid	Process
4428	Windows Defender.exe

Network Service Discovery 1 TTPs 1 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
3132	ARP.EXE

Enumerates processes with tasklist 1 TTPs 1 IoCs

discovery

Process Discovery

T1057

pid	Process
4308	tasklist.exe

Launches sc.exe 1 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2444	sc.exe

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

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe

Permission Groups Discovery: Local Groups 1 TTPs
Attempt to find local system groups and permission settings.
discovery

Local Groups
T1069.001

System Network Connections Discovery 1 TTPs 1 IoCs

Attempt to get a listing of network connections.

discovery

System Network Connections Discovery

T1049

pid	Process
728	NETSTAT.EXE

Collects information from the system 1 TTPs 1 IoCs

Uses WMIC.exe to find detailed system information.

Data from Local System

T1005

pid	Process
2708	WMIC.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1008	timeout.exe

Gathers network information 2 TTPs 2 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
4072	ipconfig.exe
728	NETSTAT.EXE

Gathers system information 1 TTPs 1 IoCs

Runs systeminfo.exe.

System Information Discovery

T1082

pid	Process
5100	systeminfo.exe

Runs net.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
3448	schtasks.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
4376	Client.exe
4376	Client.exe
4376	Client.exe
4376	Client.exe
4376	Client.exe
4376	Client.exe
4376	Client.exe
4376	Client.exe
4376	Client.exe
4376	Client.exe
4376	Client.exe
4376	Client.exe
4376	Client.exe
4376	Client.exe
4376	Client.exe
4376	Client.exe
4376	Client.exe
4376	Client.exe
4376	Client.exe
4376	Client.exe
4376	Client.exe
4428	Windows Defender.exe
4428	Windows Defender.exe
4428	Windows Defender.exe
4428	Windows Defender.exe
4428	Windows Defender.exe
4428	Windows Defender.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4376	Client.exe
Token: SeDebugPrivilege	4376	Client.exe
Token: SeDebugPrivilege	4428	Windows Defender.exe
Token: SeDebugPrivilege	4428	Windows Defender.exe
Token: SeIncreaseQuotaPrivilege	2708	WMIC.exe
Token: SeSecurityPrivilege	2708	WMIC.exe
Token: SeTakeOwnershipPrivilege	2708	WMIC.exe
Token: SeLoadDriverPrivilege	2708	WMIC.exe
Token: SeSystemProfilePrivilege	2708	WMIC.exe
Token: SeSystemtimePrivilege	2708	WMIC.exe
Token: SeProfSingleProcessPrivilege	2708	WMIC.exe
Token: SeIncBasePriorityPrivilege	2708	WMIC.exe
Token: SeCreatePagefilePrivilege	2708	WMIC.exe
Token: SeBackupPrivilege	2708	WMIC.exe
Token: SeRestorePrivilege	2708	WMIC.exe
Token: SeShutdownPrivilege	2708	WMIC.exe
Token: SeDebugPrivilege	2708	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2708	WMIC.exe
Token: SeRemoteShutdownPrivilege	2708	WMIC.exe
Token: SeUndockPrivilege	2708	WMIC.exe
Token: SeManageVolumePrivilege	2708	WMIC.exe
Token: 33	2708	WMIC.exe
Token: 34	2708	WMIC.exe
Token: 35	2708	WMIC.exe
Token: 36	2708	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2708	WMIC.exe
Token: SeSecurityPrivilege	2708	WMIC.exe
Token: SeTakeOwnershipPrivilege	2708	WMIC.exe
Token: SeLoadDriverPrivilege	2708	WMIC.exe
Token: SeSystemProfilePrivilege	2708	WMIC.exe
Token: SeSystemtimePrivilege	2708	WMIC.exe
Token: SeProfSingleProcessPrivilege	2708	WMIC.exe
Token: SeIncBasePriorityPrivilege	2708	WMIC.exe
Token: SeCreatePagefilePrivilege	2708	WMIC.exe
Token: SeBackupPrivilege	2708	WMIC.exe
Token: SeRestorePrivilege	2708	WMIC.exe
Token: SeShutdownPrivilege	2708	WMIC.exe
Token: SeDebugPrivilege	2708	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2708	WMIC.exe
Token: SeRemoteShutdownPrivilege	2708	WMIC.exe
Token: SeUndockPrivilege	2708	WMIC.exe
Token: SeManageVolumePrivilege	2708	WMIC.exe
Token: 33	2708	WMIC.exe
Token: 34	2708	WMIC.exe
Token: 35	2708	WMIC.exe
Token: 36	2708	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2744	WMIC.exe
Token: SeSecurityPrivilege	2744	WMIC.exe
Token: SeTakeOwnershipPrivilege	2744	WMIC.exe
Token: SeLoadDriverPrivilege	2744	WMIC.exe
Token: SeSystemProfilePrivilege	2744	WMIC.exe
Token: SeSystemtimePrivilege	2744	WMIC.exe
Token: SeProfSingleProcessPrivilege	2744	WMIC.exe
Token: SeIncBasePriorityPrivilege	2744	WMIC.exe
Token: SeCreatePagefilePrivilege	2744	WMIC.exe
Token: SeBackupPrivilege	2744	WMIC.exe
Token: SeRestorePrivilege	2744	WMIC.exe
Token: SeShutdownPrivilege	2744	WMIC.exe
Token: SeDebugPrivilege	2744	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2744	WMIC.exe
Token: SeRemoteShutdownPrivilege	2744	WMIC.exe
Token: SeUndockPrivilege	2744	WMIC.exe
Token: SeManageVolumePrivilege	2744	WMIC.exe
Token: 33	2744	WMIC.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 4376 wrote to memory of 1840	4376	Client.exe	87
PID 4376 wrote to memory of 1840	4376	Client.exe	87
PID 4376 wrote to memory of 5064	4376	Client.exe	89
PID 4376 wrote to memory of 5064	4376	Client.exe	89
PID 5064 wrote to memory of 1008	5064	cmd.exe	91
PID 5064 wrote to memory of 1008	5064	cmd.exe	91
PID 1840 wrote to memory of 3448	1840	cmd.exe	92
PID 1840 wrote to memory of 3448	1840	cmd.exe	92
PID 5064 wrote to memory of 4428	5064	cmd.exe	93
PID 5064 wrote to memory of 4428	5064	cmd.exe	93
PID 4428 wrote to memory of 4512	4428	Windows Defender.exe	97
PID 4428 wrote to memory of 4512	4428	Windows Defender.exe	97
PID 4512 wrote to memory of 5100	4512	cmd.exe	99
PID 4512 wrote to memory of 5100	4512	cmd.exe	99
PID 4512 wrote to memory of 4532	4512	cmd.exe	101
PID 4512 wrote to memory of 4532	4512	cmd.exe	101
PID 4512 wrote to memory of 2708	4512	cmd.exe	102
PID 4512 wrote to memory of 2708	4512	cmd.exe	102
PID 4512 wrote to memory of 3876	4512	cmd.exe	103
PID 4512 wrote to memory of 3876	4512	cmd.exe	103
PID 3876 wrote to memory of 4524	3876	net.exe	104
PID 3876 wrote to memory of 4524	3876	net.exe	104
PID 4512 wrote to memory of 1108	4512	cmd.exe	105
PID 4512 wrote to memory of 1108	4512	cmd.exe	105
PID 1108 wrote to memory of 4216	1108	query.exe	106
PID 1108 wrote to memory of 4216	1108	query.exe	106
PID 4512 wrote to memory of 1628	4512	cmd.exe	107
PID 4512 wrote to memory of 1628	4512	cmd.exe	107
PID 1628 wrote to memory of 4860	1628	net.exe	108
PID 1628 wrote to memory of 4860	1628	net.exe	108
PID 4512 wrote to memory of 4384	4512	cmd.exe	109
PID 4512 wrote to memory of 4384	4512	cmd.exe	109
PID 4384 wrote to memory of 2912	4384	net.exe	110
PID 4384 wrote to memory of 2912	4384	net.exe	110
PID 4512 wrote to memory of 672	4512	cmd.exe	111
PID 4512 wrote to memory of 672	4512	cmd.exe	111
PID 672 wrote to memory of 3944	672	net.exe	112
PID 672 wrote to memory of 3944	672	net.exe	112
PID 4512 wrote to memory of 1008	4512	cmd.exe	113
PID 4512 wrote to memory of 1008	4512	cmd.exe	113
PID 1008 wrote to memory of 3596	1008	net.exe	114
PID 1008 wrote to memory of 3596	1008	net.exe	114
PID 4512 wrote to memory of 2744	4512	cmd.exe	115
PID 4512 wrote to memory of 2744	4512	cmd.exe	115
PID 4512 wrote to memory of 4308	4512	cmd.exe	116
PID 4512 wrote to memory of 4308	4512	cmd.exe	116
PID 4512 wrote to memory of 4072	4512	cmd.exe	117
PID 4512 wrote to memory of 4072	4512	cmd.exe	117
PID 4512 wrote to memory of 4816	4512	cmd.exe	118
PID 4512 wrote to memory of 4816	4512	cmd.exe	118
PID 4512 wrote to memory of 3132	4512	cmd.exe	119
PID 4512 wrote to memory of 3132	4512	cmd.exe	119
PID 4512 wrote to memory of 728	4512	cmd.exe	120
PID 4512 wrote to memory of 728	4512	cmd.exe	120
PID 4512 wrote to memory of 2444	4512	cmd.exe	121
PID 4512 wrote to memory of 2444	4512	cmd.exe	121
PID 4512 wrote to memory of 3184	4512	cmd.exe	122
PID 4512 wrote to memory of 3184	4512	cmd.exe	122
PID 4512 wrote to memory of 4208	4512	cmd.exe	123
PID 4512 wrote to memory of 4208	4512	cmd.exe	123
PID 4428 wrote to memory of 3508	4428	Windows Defender.exe	124
PID 4428 wrote to memory of 3508	4428	Windows Defender.exe	124
PID 3508 wrote to memory of 696	3508	cmd.exe	126
PID 3508 wrote to memory of 696	3508	cmd.exe	126

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:\Users\Admin\AppData\Local\Temp\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4376
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Windows Defender" /tr '"C:\Users\Admin\AppData\Local\Temp\Windows Defender.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1840
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Windows Defender" /tr '"C:\Users\Admin\AppData\Local\Temp\Windows Defender.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3448
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8E65.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5064
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1008
- - C:\Users\Admin\AppData\Local\Temp\Windows Defender.exe
    "C:\Users\Admin\AppData\Local\Temp\Windows Defender.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4428
  - - C:\Windows\SYSTEM32\cmd.exe
      "cmd.exe"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4512
    - - C:\Windows\system32\systeminfo.exe
        
        systeminfo
        5⤵
        Gathers system information
        
        PID:5100
    - - C:\Windows\system32\HOSTNAME.EXE
        
        hostname
        5⤵
        
        PID:4532
    - - C:\Windows\System32\Wbem\WMIC.exe
        
        wmic logicaldisk get caption,description,providername
        5⤵
        Collects information from the system
        Suspicious use of AdjustPrivilegeToken
        
        PID:2708
    - - C:\Windows\system32\net.exe
        
        net user
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:3876
      - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 user
        6⤵
        
        PID:4524
    - - C:\Windows\system32\query.exe
        
        query user
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1108
      - C:\Windows\system32\quser.exe
        
        "C:\Windows\system32\quser.exe"
        6⤵
        
        PID:4216
    - - C:\Windows\system32\net.exe
        
        net localgroup
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1628
      - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 localgroup
        6⤵
        
        PID:4860
    - - C:\Windows\system32\net.exe
        
        net localgroup administrators
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:4384
      - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 localgroup administrators
        6⤵
        
        PID:2912
    - - C:\Windows\system32\net.exe
        
        net user guest
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:672
      - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 user guest
        6⤵
        
        PID:3944
    - - C:\Windows\system32\net.exe
        
        net user administrator
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1008
      - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 user administrator
        6⤵
        
        PID:3596
    - - C:\Windows\System32\Wbem\WMIC.exe
        
        wmic startup get caption,command
        5⤵
        Suspicious use of AdjustPrivilegeToken
        
        PID:2744
    - - C:\Windows\system32\tasklist.exe
        
        tasklist /svc
        5⤵
        Enumerates processes with tasklist
        
        PID:4308
    - - C:\Windows\system32\ipconfig.exe
        
        ipconfig /all
        5⤵
        Gathers network information
        
        PID:4072
    - - C:\Windows\system32\ROUTE.EXE
        
        route print
        5⤵
        
        PID:4816
    - - C:\Windows\system32\ARP.EXE
        
        arp -a
        5⤵
        Network Service Discovery
        
        PID:3132
    - - C:\Windows\system32\NETSTAT.EXE
        
        netstat -ano
        5⤵
        System Network Connections Discovery
        Gathers network information
        
        PID:728
    - - C:\Windows\system32\sc.exe
        
        sc query type= service state= all
        5⤵
        Launches sc.exe
        
        PID:2444
    - - C:\Windows\system32\netsh.exe
        
        netsh firewall show state
        5⤵
        Modifies Windows Firewall
        Event Triggered Execution: Netsh Helper DLL
        
        PID:3184
    - - C:\Windows\system32\netsh.exe
        
        netsh firewall show config
        5⤵
        Modifies Windows Firewall
        Event Triggered Execution: Netsh Helper DLL
        
        PID:4208
  - - C:\Windows\SYSTEM32\cmd.exe
      "cmd"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3508
    - - C:\Windows\system32\curl.exe
        
        curl ascii.live/rick
        5⤵
        
        PID:696

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Account Manipulation

T1098

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Account Manipulation

T1098

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Credential Access

Discovery

Network Service Discovery

T1046

Permission Groups Discovery

T1069

Local Groups

T1069.001

Process Discovery

T1057

Query Registry

T1012

System Information Discovery

T1082

System Network Connections Discovery

T1049

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\Windows Defender.exe

Filesize
265KB

MD5
73503a6b7502669d3937c8406cf97d22

SHA1
dc9426f95a5b53cfe949f051ec96aca42775c97e

SHA256
96cea5aa04bf16efa6f0c768643013fe621e1efd5e17180e1c4d26bba2c60823

SHA512
2314a6972f3d268fd5a9209c5fa6484e0dfb2af07154060ca54c157ef345b27a5c279c9f15d5bec25292f5908e65f250533dcf4b3261f7b7acf0946fc7feb56d

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp8E65.tmp.bat

Filesize
163B

MD5
588b77effe879cd8964a4de9880fd0c7

SHA1
60fce4f3cd4f6897aa1c331bdf93eaf63e6cf1ab

SHA256
b1db060b564688f38fd7761d783657ce99a042ba62313d25232a017ba71fc4ad

SHA512
5938fc2cc3e0eeb254efb5a0587134b460c5d6cc463f421a89383aec113fed2f8bd3dabf400751d88ecab6952a774477ea9352e4babed9e7c1e57742a7c843e8

Download Submit
memory/4376-7-0x00007FF844190000-0x00007FF844C51000-memory.dmp

Filesize
10.8MB

Download
memory/4376-8-0x00007FF844190000-0x00007FF844C51000-memory.dmp

Filesize
10.8MB

Download
memory/4376-0-0x0000000000C20000-0x0000000000C68000-memory.dmp

Filesize
288KB

Download
memory/4376-2-0x00007FF844190000-0x00007FF844C51000-memory.dmp

Filesize
10.8MB

Download
memory/4376-1-0x00007FF844193000-0x00007FF844195000-memory.dmp

Filesize
8KB

Download
memory/4428-13-0x000000001D9D0000-0x000000001DA46000-memory.dmp

Filesize
472KB

Download
memory/4428-14-0x0000000002D40000-0x0000000002D50000-memory.dmp

Filesize
64KB

Download
memory/4428-15-0x0000000002EC0000-0x0000000002EDE000-memory.dmp

Filesize
120KB

Download
memory/4428-16-0x0000000002CF0000-0x0000000002D00000-memory.dmp

Filesize
64KB

Download
memory/4428-17-0x0000000002F10000-0x0000000002F1E000-memory.dmp

Filesize
56KB

Download
memory/4428-19-0x000000001B900000-0x000000001B91C000-memory.dmp

Filesize
112KB

Download