asyncrat | ae9f117028edbbecbd1144b20b10be7b1bb639b56690aa3b26735f4d578f5e81

General

Target

ae9f117028edbbecbd1144b20b10be7b1bb639b56690aa3b26735f4d578f5e81.exe
Size

267KB
MD5

199e8ac4b184966f846b91fd3908ff46
SHA1

54e123336b9f44fe6c1c4953dab6f4607a6738b9
SHA256

ae9f117028edbbecbd1144b20b10be7b1bb639b56690aa3b26735f4d578f5e81
SHA512

e3d4f4456b703e7e2f54113284af139fe502ba1658c5d539964213d64e68b24b325191bcb2297b7dff3fdf1415bb2bd304863d6081e99319a406327562006716
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/z:WFzDqa86hV6uRRqX1evPlwAL

Score

10^/10

asyncrat discovery persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.4.9G

C2

corporation.warzonedns.com:9341

Mutex

480-28105c055659

Attributes

delay
0
install
false
install_folder
%AppData%

aes.plain

Signatures

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

Contains code to disable Windows Defender 1 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

resource	yara_rule
behavioral2/memory/4920-28-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def

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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	ae9f117028edbbecbd1144b20b10be7b1bb639b56690aa3b26735f4d578f5e81.exe

Executes dropped EXE 1 IoCs

pid	Process
1972	HiPatchService.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	ae9f117028edbbecbd1144b20b10be7b1bb639b56690aa3b26735f4d578f5e81.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1972 set thread context of 4920	1972	HiPatchService.exe	98

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ae9f117028edbbecbd1144b20b10be7b1bb639b56690aa3b26735f4d578f5e81.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HiPatchService.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	RegAsm.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	RegAsm.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2964	timeout.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe
4920	RegAsm.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1344 wrote to memory of 1972	1344	ae9f117028edbbecbd1144b20b10be7b1bb639b56690aa3b26735f4d578f5e81.exe	93
PID 1344 wrote to memory of 1972	1344	ae9f117028edbbecbd1144b20b10be7b1bb639b56690aa3b26735f4d578f5e81.exe	93
PID 1344 wrote to memory of 1972	1344	ae9f117028edbbecbd1144b20b10be7b1bb639b56690aa3b26735f4d578f5e81.exe	93
PID 1344 wrote to memory of 3240	1344	ae9f117028edbbecbd1144b20b10be7b1bb639b56690aa3b26735f4d578f5e81.exe	94
PID 1344 wrote to memory of 3240	1344	ae9f117028edbbecbd1144b20b10be7b1bb639b56690aa3b26735f4d578f5e81.exe	94
PID 1344 wrote to memory of 3240	1344	ae9f117028edbbecbd1144b20b10be7b1bb639b56690aa3b26735f4d578f5e81.exe	94
PID 3240 wrote to memory of 2964	3240	cmd.exe	96
PID 3240 wrote to memory of 2964	3240	cmd.exe	96
PID 3240 wrote to memory of 2964	3240	cmd.exe	96
PID 1972 wrote to memory of 4920	1972	HiPatchService.exe	98
PID 1972 wrote to memory of 4920	1972	HiPatchService.exe	98
PID 1972 wrote to memory of 4920	1972	HiPatchService.exe	98
PID 1972 wrote to memory of 4920	1972	HiPatchService.exe	98
PID 1972 wrote to memory of 4920	1972	HiPatchService.exe	98
PID 1972 wrote to memory of 4920	1972	HiPatchService.exe	98
PID 1972 wrote to memory of 4920	1972	HiPatchService.exe	98
PID 1972 wrote to memory of 4920	1972	HiPatchService.exe	98

C:\Users\Admin\AppData\Local\Temp\ae9f117028edbbecbd1144b20b10be7b1bb639b56690aa3b26735f4d578f5e81.exe
"C:\Users\Admin\AppData\Local\Temp\ae9f117028edbbecbd1144b20b10be7b1bb639b56690aa3b26735f4d578f5e81.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1344
- C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.exe
  "C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1972
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    PID:4920
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3240
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 180
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2964

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:3532

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat

Filesize
213B

MD5
0955cb4b691d44b37f8b6fad48a33b8e

SHA1
9dae759ae014cc124ab6eed7c8035788c124ae4a

SHA256
9092dbb1ca1767d1966b7f79349dd95a802a68248251bf070c0f1d74d5681d71

SHA512
08b868a028c1e8d29ed643416850df16f58d44668f9193b46bd3934965e5617a0a4015fc52815c5456023dbde01023450d295b76d936a936f26b602e764b0235

Download Submit
C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.exe

Filesize
267KB

MD5
14adba8aa44ddd1bf48a13b063a7c2ce

SHA1
5b7f46b1a5a0a77e8a2c2d0625d17dd243ece5b7

SHA256
95e317467eed9d6a73e6bfe4630f583a4dd40f4969a3044c5d8aa8e82bde4d63

SHA512
8bb6dc7ee9c103ed5a4647e7082de36c9d6b216bac601ef3315bccaa626d13f5bad84a2c48cc55df5cdd7bcdd750fc765a771686e5025f4b2fabcb1c7934b787

Download Submit
memory/1344-6-0x0000000005160000-0x000000000516A000-memory.dmp

Filesize
40KB

Download
memory/1344-3-0x00000000050C0000-0x0000000005152000-memory.dmp

Filesize
584KB

Download
memory/1344-4-0x00000000746C0000-0x0000000074E70000-memory.dmp

Filesize
7.7MB

Download
memory/1344-5-0x0000000005170000-0x000000000517A000-memory.dmp

Filesize
40KB

Download
memory/1344-0-0x00000000746CE000-0x00000000746CF000-memory.dmp

Filesize
4KB

Download
memory/1344-2-0x0000000005780000-0x0000000005D24000-memory.dmp

Filesize
5.6MB

Download
memory/1344-25-0x00000000746C0000-0x0000000074E70000-memory.dmp

Filesize
7.7MB

Download
memory/1344-1-0x00000000006A0000-0x00000000006E6000-memory.dmp

Filesize
280KB

Download
memory/1972-24-0x00000000746C0000-0x0000000074E70000-memory.dmp

Filesize
7.7MB

Download
memory/1972-26-0x00000000746C0000-0x0000000074E70000-memory.dmp

Filesize
7.7MB

Download
memory/1972-30-0x00000000746C0000-0x0000000074E70000-memory.dmp

Filesize
7.7MB

Download
memory/4920-28-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads