asyncrat | 85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672

General

Target

85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe
Size

271KB
MD5

a76dd5360b06b28f430842ac86c49040
SHA1

b711a066b34e4777424a390b4b02802fd964ae74
SHA256

85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672
SHA512

c0c105347529e4a106a4bbd0d704cdae0a37daf602b06a005ebf09c2d67b1cd8abb849b1caeaa5e48cbf9a5757207a81e200f2a4f68b4f726be799af85a6e9ee
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/s8sdT:WFzDqa86hV6uRRqX1evPlwAEdT

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
Asyncrat family
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/3724-29-0x0000000000400000-0x0000000000430000-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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe

Executes dropped EXE 1 IoCs

pid	Process
4996	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-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4996 set thread context of 3724	4996	HiPatchService.exe	100

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	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.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
2404	timeout.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe
3724	RegAsm.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 3256 wrote to memory of 4996	3256	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe	92
PID 3256 wrote to memory of 4996	3256	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe	92
PID 3256 wrote to memory of 4996	3256	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe	92
PID 3256 wrote to memory of 4676	3256	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe	93
PID 3256 wrote to memory of 4676	3256	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe	93
PID 3256 wrote to memory of 4676	3256	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe	93
PID 4676 wrote to memory of 2404	4676	cmd.exe	95
PID 4676 wrote to memory of 2404	4676	cmd.exe	95
PID 4676 wrote to memory of 2404	4676	cmd.exe	95
PID 4996 wrote to memory of 3724	4996	HiPatchService.exe	100
PID 4996 wrote to memory of 3724	4996	HiPatchService.exe	100
PID 4996 wrote to memory of 3724	4996	HiPatchService.exe	100
PID 4996 wrote to memory of 3724	4996	HiPatchService.exe	100
PID 4996 wrote to memory of 3724	4996	HiPatchService.exe	100
PID 4996 wrote to memory of 3724	4996	HiPatchService.exe	100
PID 4996 wrote to memory of 3724	4996	HiPatchService.exe	100
PID 4996 wrote to memory of 3724	4996	HiPatchService.exe	100

C:\Users\Admin\AppData\Local\Temp\85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe
"C:\Users\Admin\AppData\Local\Temp\85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3256
- 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:4996
- - 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:3724
- 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:4676
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 180
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2404

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:3436

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
271KB

MD5
794b75a78d38ced05e2d891e8c54f54b

SHA1
dc130daf3e3d30dd23eb8cc9f71f8067fb849988

SHA256
cfa1228da0d89c444008125096a5666e06ee8190865b18249b705ba4cd640edf

SHA512
08f08fae4b99853cd200173d4a508da97885030e9309b36c15b5d0b608ab9b074c2a52054eefa14887d3a1e54a8fab527ed43f6f578b95b59b430f29b8559b83

Download Submit
memory/3256-5-0x0000000074D10000-0x00000000754C0000-memory.dmp

Filesize
7.7MB

Download
memory/3256-3-0x0000000004FE0000-0x0000000005072000-memory.dmp

Filesize
584KB

Download
memory/3256-4-0x0000000004F80000-0x0000000004F8A000-memory.dmp

Filesize
40KB

Download
memory/3256-6-0x0000000004F70000-0x0000000004F7A000-memory.dmp

Filesize
40KB

Download
memory/3256-0-0x0000000074D1E000-0x0000000074D1F000-memory.dmp

Filesize
4KB

Download
memory/3256-10-0x0000000074D1E000-0x0000000074D1F000-memory.dmp

Filesize
4KB

Download
memory/3256-2-0x00000000054F0000-0x0000000005A94000-memory.dmp

Filesize
5.6MB

Download
memory/3256-25-0x0000000074D10000-0x00000000754C0000-memory.dmp

Filesize
7.7MB

Download
memory/3256-1-0x0000000000530000-0x0000000000576000-memory.dmp

Filesize
280KB

Download
memory/3724-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/4996-26-0x0000000074D10000-0x00000000754C0000-memory.dmp

Filesize
7.7MB

Download
memory/4996-27-0x0000000074D10000-0x00000000754C0000-memory.dmp

Filesize
7.7MB

Download
memory/4996-31-0x0000000074D10000-0x00000000754C0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads