asyncrat | 097c6bbd364fe011d12adb2bb194f36d518ff717d17712f17a5a8de44a4bd201

General

Target

52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241.exe
Size

87KB
MD5

3c6ccbfe897915f0fe6bc34d193bf4a0
SHA1

6fe3161ee66e317889066a302474e511220939e7
SHA256

52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241
SHA512

e0bf1fc11deacb24b5d5de4bcfc522057d1ca1b4866325356b2c9a1f009c6562eee0c0e602478b3639de4beff14997d59a3b428281d9111278544fc5e3199536
SSDEEP

1536:Fn6gewiUBl7opCAFqRxzWbg5N0ns1decUmnybgR+fPUSphJ7L2Ut:0gewHgCSC0sXmbgR+fPUSphJ7Ll

Score

10^/10

asyncrat system guard runtime persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

System Guard Runtime

C2

85.105.88.221:2531

Mutex

System Guard Runtime

Attributes

delay
3
install
false
install_file
System Guard Runtime
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/1972-139-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

powershell.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SystemGuardRuntime = "C:\\Users\\Admin\\AppData\\Roaming\\SystemGuardRuntime\\SystemGuardRuntime.exe"	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241.exe

description	pid	process	target process
PID 1852 set thread context of 1972	1852	52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241.exe	RegAsm.exe

Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1052 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

4828 powershell.exe
4828 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 4828 powershell.exe

pid	process
1052	schtasks.exe

pid	process
4828	powershell.exe
4828	powershell.exe

description	pid	process
Token: SeDebugPrivilege	4828	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241.execmd.exe

description	pid	process	target process
PID 1852 wrote to memory of 4828	1852	52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241.exe	powershell.exe
PID 1852 wrote to memory of 4828	1852	52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241.exe	powershell.exe
PID 1852 wrote to memory of 4828	1852	52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241.exe	powershell.exe
PID 1852 wrote to memory of 4316	1852	52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241.exe	cmd.exe
PID 1852 wrote to memory of 4316	1852	52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241.exe	cmd.exe
PID 1852 wrote to memory of 4316	1852	52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241.exe	cmd.exe
PID 4316 wrote to memory of 1052	4316	cmd.exe	schtasks.exe
PID 4316 wrote to memory of 1052	4316	cmd.exe	schtasks.exe
PID 4316 wrote to memory of 1052	4316	cmd.exe	schtasks.exe
PID 1852 wrote to memory of 1972	1852	52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241.exe	RegAsm.exe
PID 1852 wrote to memory of 1972	1852	52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241.exe	RegAsm.exe
PID 1852 wrote to memory of 1972	1852	52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241.exe	RegAsm.exe
PID 1852 wrote to memory of 1972	1852	52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241.exe	RegAsm.exe
PID 1852 wrote to memory of 1972	1852	52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241.exe	RegAsm.exe
PID 1852 wrote to memory of 1972	1852	52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241.exe	RegAsm.exe
PID 1852 wrote to memory of 1972	1852	52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241.exe	RegAsm.exe
PID 1852 wrote to memory of 1972	1852	52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241.exe
"C:\Users\Admin\AppData\Local\Temp\52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1852

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"powershell.exe" Remove -ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'SystemGuardRuntime';New-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'SystemGuardRuntime' -Value '"C:\Users\Admin\AppData\Roaming\SystemGuardRuntime\SystemGuardRuntime.exe"' -PropertyType 'String'
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4828

C:\Windows\SysWOW64\cmd.exe
"cmd" /C schtasks /create /tn \SystemGuardRuntime /tr "C:\Users\Admin\AppData\Roaming\SystemGuardRuntime\SystemGuardRuntime.exe" /st 00:00 /du 9999:59 /sc once /ri 60 /rl HIGHEST /f
2⤵
- Suspicious use of WriteProcessMemory
PID:4316

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /tn \SystemGuardRuntime /tr "C:\Users\Admin\AppData\Roaming\SystemGuardRuntime\SystemGuardRuntime.exe" /st 00:00 /du 9999:59 /sc once /ri 60 /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:1052

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
#cmd
2⤵
PID:1972

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/1052-136-0x0000000000000000-mapping.dmp

Download
memory/1852-133-0x0000000005550000-0x0000000005AF4000-memory.dmp

Filesize
5.6MB

Download
memory/1852-132-0x00000000006B0000-0x00000000006CC000-memory.dmp

Filesize
112KB

Download
memory/1972-138-0x0000000000000000-mapping.dmp

Download
memory/1972-139-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4316-135-0x0000000000000000-mapping.dmp

Download
memory/4828-144-0x00000000066D0000-0x00000000066EE000-memory.dmp

Filesize
120KB

Download
memory/4828-147-0x0000000006C90000-0x0000000006CAE000-memory.dmp

Filesize
120KB

Download
memory/4828-140-0x00000000059A0000-0x0000000005FC8000-memory.dmp

Filesize
6.2MB

Download
memory/4828-141-0x00000000057A0000-0x00000000057C2000-memory.dmp

Filesize
136KB

Download
memory/4828-142-0x00000000058C0000-0x0000000005926000-memory.dmp

Filesize
408KB

Download
memory/4828-143-0x0000000006040000-0x00000000060A6000-memory.dmp

Filesize
408KB

Download
memory/4828-134-0x0000000000000000-mapping.dmp

Download
memory/4828-145-0x0000000006CB0000-0x0000000006CE2000-memory.dmp

Filesize
200KB

Download
memory/4828-146-0x00000000707E0000-0x000000007082C000-memory.dmp

Filesize
304KB

Download
memory/4828-137-0x0000000002D30000-0x0000000002D66000-memory.dmp

Filesize
216KB

Download
memory/4828-148-0x0000000008020000-0x000000000869A000-memory.dmp

Filesize
6.5MB

Download
memory/4828-149-0x00000000079E0000-0x00000000079FA000-memory.dmp

Filesize
104KB

Download
memory/4828-150-0x0000000007A50000-0x0000000007A5A000-memory.dmp

Filesize
40KB

Download
memory/4828-151-0x0000000007C60000-0x0000000007CF6000-memory.dmp

Filesize
600KB

Download
memory/4828-152-0x0000000007C10000-0x0000000007C1E000-memory.dmp

Filesize
56KB

Download
memory/4828-153-0x0000000007D20000-0x0000000007D3A000-memory.dmp

Filesize
104KB

Download
memory/4828-154-0x0000000007D00000-0x0000000007D08000-memory.dmp

Filesize
32KB

Download
memory/4828-155-0x0000000007D40000-0x0000000007D62000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads