asyncrat | 86f422b15b1672d2d1e42051f56e018810daa8f890c1a60d630693fd98c14887

Analysis

max time kernel
107s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
10-10-2022 06:11

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General

Target

New_order.exe
Size

24KB
MD5

8a61656c59b9ece4c4334a27fe91aa39
SHA1

fb48ddb4bc7ff5bb8f1c95e5db3a9032d8013996
SHA256

86f422b15b1672d2d1e42051f56e018810daa8f890c1a60d630693fd98c14887
SHA512

53aac238a7d1023254b47f1ef05d6321558e669f883d049ab9baabe994cb2b00c9638b0146838bd7d94a8485d8753adeae624792565ccc7daf688b08850737c4
SSDEEP

384:to2Sa91twZUvq9kiQGaW7NLGOLyYLK8LILQyPAhpswFVx:toc91twZp9ZQw7xNqQ8RPAJP

Score

10^/10

asyncrat persistence rat

Malware Config

Signatures

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

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:

New_order.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	New_order.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

New_order.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicrosoftSoftware = "\"C:\\Users\\Admin\\AppData\\Roaming\\Updates\\MicrosoftSoftware.exe\""	New_order.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

New_order.exe

description pid process target process

PID 1744 set thread context of 2148 1744 New_order.exe RegAsm.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

2500 powershell.exe
2500 powershell.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

New_order.exepowershell.exeRegAsm.exe

description pid process

Token: SeDebugPrivilege 1744 New_order.exe
Token: SeDebugPrivilege 2500 powershell.exe
Token: SeDebugPrivilege 2148 RegAsm.exe

description	pid	process	target process
PID 1744 set thread context of 2148	1744	New_order.exe	RegAsm.exe

pid	process
2500	powershell.exe
2500	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1744	New_order.exe
Token: SeDebugPrivilege	2500	powershell.exe
Token: SeDebugPrivilege	2148	RegAsm.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

New_order.exe

description	pid	process	target process
PID 1744 wrote to memory of 2500	1744	New_order.exe	powershell.exe
PID 1744 wrote to memory of 2500	1744	New_order.exe	powershell.exe
PID 1744 wrote to memory of 2500	1744	New_order.exe	powershell.exe
PID 1744 wrote to memory of 2148	1744	New_order.exe	RegAsm.exe
PID 1744 wrote to memory of 2148	1744	New_order.exe	RegAsm.exe
PID 1744 wrote to memory of 2148	1744	New_order.exe	RegAsm.exe
PID 1744 wrote to memory of 2148	1744	New_order.exe	RegAsm.exe
PID 1744 wrote to memory of 2148	1744	New_order.exe	RegAsm.exe
PID 1744 wrote to memory of 2148	1744	New_order.exe	RegAsm.exe
PID 1744 wrote to memory of 2148	1744	New_order.exe	RegAsm.exe
PID 1744 wrote to memory of 2148	1744	New_order.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\New_order.exe
"C:\Users\Admin\AppData\Local\Temp\New_order.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1744

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANwAwAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2500

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2148

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1744-132-0x0000000000A40000-0x0000000000A4C000-memory.dmp

Filesize
48KB

Download
memory/1744-133-0x00000000058F0000-0x0000000005E94000-memory.dmp

Filesize
5.6MB

Download
memory/1744-134-0x00000000053E0000-0x0000000005472000-memory.dmp

Filesize
584KB

Download
memory/1744-135-0x0000000005580000-0x000000000558A000-memory.dmp

Filesize
40KB

Download
memory/1744-136-0x0000000008370000-0x0000000008392000-memory.dmp

Filesize
136KB

Download
memory/2148-147-0x0000000005900000-0x000000000599C000-memory.dmp

Filesize
624KB

Download
memory/2148-146-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2148-145-0x0000000000000000-mapping.dmp

Download
memory/2500-140-0x0000000005A60000-0x0000000005AC6000-memory.dmp

Filesize
408KB

Download
memory/2500-141-0x0000000006110000-0x0000000006176000-memory.dmp

Filesize
408KB

Download
memory/2500-142-0x0000000006790000-0x00000000067AE000-memory.dmp

Filesize
120KB

Download
memory/2500-144-0x0000000006C90000-0x0000000006CAA000-memory.dmp

Filesize
104KB

Download
memory/2500-143-0x0000000007DD0000-0x000000000844A000-memory.dmp

Filesize
6.5MB

Download
memory/2500-139-0x0000000005AE0000-0x0000000006108000-memory.dmp

Filesize
6.2MB

Download
memory/2500-138-0x00000000031D0000-0x0000000003206000-memory.dmp

Filesize
216KB

Download
memory/2500-137-0x0000000000000000-mapping.dmp

Download