asyncrat | a7edb74c3ef9b545c28e4a291faab44d93338dcb78dcf1baab9569d286ef5405

Analysis

max time kernel
135s
max time network
140s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
05-12-2024 17:42

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General

Target

Client.exe
Size

74KB
MD5

8d7fa55e8b19df35bec05d0f763aaebd
SHA1

7e611aac188610b808cc9d0ff8eb91f33b5a6fc1
SHA256

a7edb74c3ef9b545c28e4a291faab44d93338dcb78dcf1baab9569d286ef5405
SHA512

ec484ceee2ab704d1f5716a8f8d8b713791c750ecfb87ced75e401ffce32fc4d17c6ba7ea21dbd8feff852f681f1e69a3e3e7852ed170797f9952dd5d8a2ef0c
SSDEEP

1536:8UUPcxVteCW7PMVee9VdQuDI6H1bf/nSMfb/xQzcBLVclN:8UmcxV4x7PMVee9VdQsH1bf6YxQYBY

Score

10^/10

asyncrat default discovery evasion persistence privilege_escalation rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

147.185.221.24:17909

Mutex

xftanyrkdmfog

Attributes

delay
1
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat 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
2984	netsh.exe
1464	netsh.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Network Service Discovery 1 TTPs 1 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
2084	ARP.EXE

Enumerates processes with tasklist 1 TTPs 1 IoCs

discovery

Process Discovery

T1057

pid	Process
4992	tasklist.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Logs\CBS\CBS.log	TiWorker.exe

Launches sc.exe 1 IoCs

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

pid	Process
2664	sc.exe

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 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
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key queried	\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
2388	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
4328	WMIC.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
1988	ipconfig.exe
2388	NETSTAT.EXE

Gathers system information 1 TTPs 1 IoCs

Runs systeminfo.exe.

System Information Discovery

T1082

pid	Process
1980	systeminfo.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 17 IoCs

pid	Process
1028	Client.exe
1028	Client.exe
1028	Client.exe
1028	Client.exe
1028	Client.exe
1028	Client.exe
1028	Client.exe
1028	Client.exe
1028	Client.exe
4328	WMIC.exe
4328	WMIC.exe
4328	WMIC.exe
4328	WMIC.exe
1200	WMIC.exe
1200	WMIC.exe
1200	WMIC.exe
1200	WMIC.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1028	Client.exe
Token: SeSecurityPrivilege	4912	TiWorker.exe
Token: SeRestorePrivilege	4912	TiWorker.exe
Token: SeBackupPrivilege	4912	TiWorker.exe
Token: SeIncreaseQuotaPrivilege	4328	WMIC.exe
Token: SeSecurityPrivilege	4328	WMIC.exe
Token: SeTakeOwnershipPrivilege	4328	WMIC.exe
Token: SeLoadDriverPrivilege	4328	WMIC.exe
Token: SeSystemProfilePrivilege	4328	WMIC.exe
Token: SeSystemtimePrivilege	4328	WMIC.exe
Token: SeProfSingleProcessPrivilege	4328	WMIC.exe
Token: SeIncBasePriorityPrivilege	4328	WMIC.exe
Token: SeCreatePagefilePrivilege	4328	WMIC.exe
Token: SeBackupPrivilege	4328	WMIC.exe
Token: SeRestorePrivilege	4328	WMIC.exe
Token: SeShutdownPrivilege	4328	WMIC.exe
Token: SeDebugPrivilege	4328	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4328	WMIC.exe
Token: SeRemoteShutdownPrivilege	4328	WMIC.exe
Token: SeUndockPrivilege	4328	WMIC.exe
Token: SeManageVolumePrivilege	4328	WMIC.exe
Token: 33	4328	WMIC.exe
Token: 34	4328	WMIC.exe
Token: 35	4328	WMIC.exe
Token: 36	4328	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4328	WMIC.exe
Token: SeSecurityPrivilege	4328	WMIC.exe
Token: SeTakeOwnershipPrivilege	4328	WMIC.exe
Token: SeLoadDriverPrivilege	4328	WMIC.exe
Token: SeSystemProfilePrivilege	4328	WMIC.exe
Token: SeSystemtimePrivilege	4328	WMIC.exe
Token: SeProfSingleProcessPrivilege	4328	WMIC.exe
Token: SeIncBasePriorityPrivilege	4328	WMIC.exe
Token: SeCreatePagefilePrivilege	4328	WMIC.exe
Token: SeBackupPrivilege	4328	WMIC.exe
Token: SeRestorePrivilege	4328	WMIC.exe
Token: SeShutdownPrivilege	4328	WMIC.exe
Token: SeDebugPrivilege	4328	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4328	WMIC.exe
Token: SeRemoteShutdownPrivilege	4328	WMIC.exe
Token: SeUndockPrivilege	4328	WMIC.exe
Token: SeManageVolumePrivilege	4328	WMIC.exe
Token: 33	4328	WMIC.exe
Token: 34	4328	WMIC.exe
Token: 35	4328	WMIC.exe
Token: 36	4328	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1200	WMIC.exe
Token: SeSecurityPrivilege	1200	WMIC.exe
Token: SeTakeOwnershipPrivilege	1200	WMIC.exe
Token: SeLoadDriverPrivilege	1200	WMIC.exe
Token: SeSystemProfilePrivilege	1200	WMIC.exe
Token: SeSystemtimePrivilege	1200	WMIC.exe
Token: SeProfSingleProcessPrivilege	1200	WMIC.exe
Token: SeIncBasePriorityPrivilege	1200	WMIC.exe
Token: SeCreatePagefilePrivilege	1200	WMIC.exe
Token: SeBackupPrivilege	1200	WMIC.exe
Token: SeRestorePrivilege	1200	WMIC.exe
Token: SeShutdownPrivilege	1200	WMIC.exe
Token: SeDebugPrivilege	1200	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1200	WMIC.exe
Token: SeRemoteShutdownPrivilege	1200	WMIC.exe
Token: SeUndockPrivilege	1200	WMIC.exe
Token: SeManageVolumePrivilege	1200	WMIC.exe
Token: 33	1200	WMIC.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1028	Client.exe

Suspicious use of WriteProcessMemory 50 IoCs

description	pid	Process	procid_target
PID 1028 wrote to memory of 1824	1028	Client.exe	89
PID 1028 wrote to memory of 1824	1028	Client.exe	89
PID 1824 wrote to memory of 1980	1824	cmd.exe	91
PID 1824 wrote to memory of 1980	1824	cmd.exe	91
PID 1824 wrote to memory of 804	1824	cmd.exe	96
PID 1824 wrote to memory of 804	1824	cmd.exe	96
PID 1824 wrote to memory of 4328	1824	cmd.exe	97
PID 1824 wrote to memory of 4328	1824	cmd.exe	97
PID 1824 wrote to memory of 444	1824	cmd.exe	98
PID 1824 wrote to memory of 444	1824	cmd.exe	98
PID 444 wrote to memory of 2140	444	net.exe	99
PID 444 wrote to memory of 2140	444	net.exe	99
PID 1824 wrote to memory of 740	1824	cmd.exe	100
PID 1824 wrote to memory of 740	1824	cmd.exe	100
PID 740 wrote to memory of 2988	740	query.exe	101
PID 740 wrote to memory of 2988	740	query.exe	101
PID 1824 wrote to memory of 2696	1824	cmd.exe	102
PID 1824 wrote to memory of 2696	1824	cmd.exe	102
PID 2696 wrote to memory of 4512	2696	net.exe	103
PID 2696 wrote to memory of 4512	2696	net.exe	103
PID 1824 wrote to memory of 1604	1824	cmd.exe	104
PID 1824 wrote to memory of 1604	1824	cmd.exe	104
PID 1604 wrote to memory of 1032	1604	net.exe	105
PID 1604 wrote to memory of 1032	1604	net.exe	105
PID 1824 wrote to memory of 1236	1824	cmd.exe	106
PID 1824 wrote to memory of 1236	1824	cmd.exe	106
PID 1236 wrote to memory of 3804	1236	net.exe	107
PID 1236 wrote to memory of 3804	1236	net.exe	107
PID 1824 wrote to memory of 3596	1824	cmd.exe	108
PID 1824 wrote to memory of 3596	1824	cmd.exe	108
PID 3596 wrote to memory of 632	3596	net.exe	109
PID 3596 wrote to memory of 632	3596	net.exe	109
PID 1824 wrote to memory of 1200	1824	cmd.exe	110
PID 1824 wrote to memory of 1200	1824	cmd.exe	110
PID 1824 wrote to memory of 4992	1824	cmd.exe	111
PID 1824 wrote to memory of 4992	1824	cmd.exe	111
PID 1824 wrote to memory of 1988	1824	cmd.exe	112
PID 1824 wrote to memory of 1988	1824	cmd.exe	112
PID 1824 wrote to memory of 456	1824	cmd.exe	113
PID 1824 wrote to memory of 456	1824	cmd.exe	113
PID 1824 wrote to memory of 2084	1824	cmd.exe	114
PID 1824 wrote to memory of 2084	1824	cmd.exe	114
PID 1824 wrote to memory of 2388	1824	cmd.exe	115
PID 1824 wrote to memory of 2388	1824	cmd.exe	115
PID 1824 wrote to memory of 2664	1824	cmd.exe	116
PID 1824 wrote to memory of 2664	1824	cmd.exe	116
PID 1824 wrote to memory of 2984	1824	cmd.exe	117
PID 1824 wrote to memory of 2984	1824	cmd.exe	117
PID 1824 wrote to memory of 1464	1824	cmd.exe	118
PID 1824 wrote to memory of 1464	1824	cmd.exe	118

C:\Users\Admin\AppData\Local\Temp\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1028
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1824
- - C:\Windows\system32\systeminfo.exe
    systeminfo
    3⤵
    - Gathers system information
    PID:1980
- - C:\Windows\system32\HOSTNAME.EXE
    hostname
    3⤵
    PID:804
- - C:\Windows\System32\Wbem\WMIC.exe
    wmic logicaldisk get caption,description,providername
    3⤵
    - Collects information from the system
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4328
- - C:\Windows\system32\net.exe
    net user
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:444
  - - C:\Windows\system32\net1.exe
      C:\Windows\system32\net1 user
      4⤵
      PID:2140
- - C:\Windows\system32\query.exe
    query user
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:740
  - - C:\Windows\system32\quser.exe
      "C:\Windows\system32\quser.exe"
      4⤵
      PID:2988
- - C:\Windows\system32\net.exe
    net localgroup
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2696
  - - C:\Windows\system32\net1.exe
      C:\Windows\system32\net1 localgroup
      4⤵
      PID:4512
- - C:\Windows\system32\net.exe
    net localgroup administrators
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1604
  - - C:\Windows\system32\net1.exe
      C:\Windows\system32\net1 localgroup administrators
      4⤵
      PID:1032
- - C:\Windows\system32\net.exe
    net user guest
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1236
  - - C:\Windows\system32\net1.exe
      C:\Windows\system32\net1 user guest
      4⤵
      PID:3804
- - C:\Windows\system32\net.exe
    net user administrator
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3596
  - - C:\Windows\system32\net1.exe
      C:\Windows\system32\net1 user administrator
      4⤵
      PID:632
- - C:\Windows\System32\Wbem\WMIC.exe
    wmic startup get caption,command
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1200
- - C:\Windows\system32\tasklist.exe
    tasklist /svc
    3⤵
    - Enumerates processes with tasklist
    PID:4992
- - C:\Windows\system32\ipconfig.exe
    ipconfig /all
    3⤵
    - Gathers network information
    PID:1988
- - C:\Windows\system32\ROUTE.EXE
    route print
    3⤵
    PID:456
- - C:\Windows\system32\ARP.EXE
    arp -a
    3⤵
    - Network Service Discovery
    PID:2084
- - C:\Windows\system32\NETSTAT.EXE
    netstat -ano
    3⤵
    - System Network Connections Discovery
    - Gathers network information
    PID:2388
- - C:\Windows\system32\sc.exe
    sc query type= service state= all
    3⤵
    - Launches sc.exe
    PID:2664
- - C:\Windows\system32\netsh.exe
    netsh firewall show state
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    PID:2984
- - C:\Windows\system32\netsh.exe
    netsh firewall show config
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    PID:1464

C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.4467_none_7e0f83e07c8c1985\TiWorker.exe
C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.4467_none_7e0f83e07c8c1985\TiWorker.exe -Embedding
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:4912

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Account Manipulation

T1098

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Account Manipulation

T1098

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

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

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Downloads

memory/1028-10-0x00007FF9A7503000-0x00007FF9A7505000-memory.dmp

Filesize
8KB

Download
memory/1028-12-0x00007FF9A7500000-0x00007FF9A7FC2000-memory.dmp

Filesize
10.8MB

Download
memory/1028-4-0x00007FF9A7500000-0x00007FF9A7FC2000-memory.dmp

Filesize
10.8MB

Download
memory/1028-7-0x00007FF9A7500000-0x00007FF9A7FC2000-memory.dmp

Filesize
10.8MB

Download
memory/1028-8-0x00007FF9A7500000-0x00007FF9A7FC2000-memory.dmp

Filesize
10.8MB

Download
memory/1028-0-0x00007FF9A7503000-0x00007FF9A7505000-memory.dmp

Filesize
8KB

Download
memory/1028-11-0x00007FF9A7500000-0x00007FF9A7FC2000-memory.dmp

Filesize
10.8MB

Download
memory/1028-3-0x00007FF9A7500000-0x00007FF9A7FC2000-memory.dmp

Filesize
10.8MB

Download
memory/1028-13-0x00007FF9A7500000-0x00007FF9A7FC2000-memory.dmp

Filesize
10.8MB

Download
memory/1028-14-0x00007FF9A7500000-0x00007FF9A7FC2000-memory.dmp

Filesize
10.8MB

Download
memory/1028-15-0x000000001D550000-0x000000001D5C6000-memory.dmp

Filesize
472KB

Download
memory/1028-16-0x000000001B950000-0x000000001B95C000-memory.dmp

Filesize
48KB

Download
memory/1028-17-0x000000001BF60000-0x000000001BF7E000-memory.dmp

Filesize
120KB

Download
memory/1028-1-0x0000000000E20000-0x0000000000E38000-memory.dmp

Filesize
96KB

Download