asyncrat | b30b417e0fdcb5a16bbc82304160abdbafe7736a5abce982bf327c49a8be162f

General

Target

b30b417e0fdcb5a16bbc82304160abdbafe7736a5abce982bf327c49a8be162f.exe
Size

270KB
MD5

e953cebbbeb7b97fac55a22a3446f25c
SHA1

37cb5ff6be0b7515c77ac12b4dddb8ffac6a9ad5
SHA256

b30b417e0fdcb5a16bbc82304160abdbafe7736a5abce982bf327c49a8be162f
SHA512

5cabbe976bd3cb270b8769d7071a17a4ea6e3d5f3f383456509a5b65ecac7a59cfd80b39350b626c84eadd91303167d1b23aa06e72d00756ea290fc6473fa99d
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/s8sdH:WFzDqa86hV6uRRqX1evPlwAEdH

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/4396-29-0x0000000000400000-0x0000000000430000-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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	b30b417e0fdcb5a16bbc82304160abdbafe7736a5abce982bf327c49a8be162f.exe

Executes dropped EXE 1 IoCs

pid	Process
2652	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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	b30b417e0fdcb5a16bbc82304160abdbafe7736a5abce982bf327c49a8be162f.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2652 set thread context of 4396	2652	HiPatchService.exe	91

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	b30b417e0fdcb5a16bbc82304160abdbafe7736a5abce982bf327c49a8be162f.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
5040	timeout.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe
4396	RegAsm.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1540 wrote to memory of 2652	1540	b30b417e0fdcb5a16bbc82304160abdbafe7736a5abce982bf327c49a8be162f.exe	85
PID 1540 wrote to memory of 2652	1540	b30b417e0fdcb5a16bbc82304160abdbafe7736a5abce982bf327c49a8be162f.exe	85
PID 1540 wrote to memory of 2652	1540	b30b417e0fdcb5a16bbc82304160abdbafe7736a5abce982bf327c49a8be162f.exe	85
PID 1540 wrote to memory of 4224	1540	b30b417e0fdcb5a16bbc82304160abdbafe7736a5abce982bf327c49a8be162f.exe	87
PID 1540 wrote to memory of 4224	1540	b30b417e0fdcb5a16bbc82304160abdbafe7736a5abce982bf327c49a8be162f.exe	87
PID 1540 wrote to memory of 4224	1540	b30b417e0fdcb5a16bbc82304160abdbafe7736a5abce982bf327c49a8be162f.exe	87
PID 4224 wrote to memory of 5040	4224	cmd.exe	89
PID 4224 wrote to memory of 5040	4224	cmd.exe	89
PID 4224 wrote to memory of 5040	4224	cmd.exe	89
PID 2652 wrote to memory of 4396	2652	HiPatchService.exe	91
PID 2652 wrote to memory of 4396	2652	HiPatchService.exe	91
PID 2652 wrote to memory of 4396	2652	HiPatchService.exe	91
PID 2652 wrote to memory of 4396	2652	HiPatchService.exe	91
PID 2652 wrote to memory of 4396	2652	HiPatchService.exe	91
PID 2652 wrote to memory of 4396	2652	HiPatchService.exe	91
PID 2652 wrote to memory of 4396	2652	HiPatchService.exe	91
PID 2652 wrote to memory of 4396	2652	HiPatchService.exe	91

C:\Users\Admin\AppData\Local\Temp\b30b417e0fdcb5a16bbc82304160abdbafe7736a5abce982bf327c49a8be162f.exe
"C:\Users\Admin\AppData\Local\Temp\b30b417e0fdcb5a16bbc82304160abdbafe7736a5abce982bf327c49a8be162f.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1540
- 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:2652
- - 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:4396
- 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:4224
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 180
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:5040

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:4268

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
270KB

MD5
888f428d5ab7051f3b19e1fcaf08bedf

SHA1
23812069cdd1bfd1fe64bd2f47f61686560a9e32

SHA256
5d688868a3bc252019c19498f051f5a636254476492ac5446d0dd08dec1190bc

SHA512
d5247821ff7b65459e9a9f9b11eeefa237295e4e8ce95b1f69508f0867220de705056fbc4e378ce81615e80d1ac07bfbacf5cd72ca347df2367052761dd20ab5

Download Submit
memory/1540-6-0x0000000005650000-0x000000000565A000-memory.dmp

Filesize
40KB

Download
memory/1540-3-0x0000000005590000-0x0000000005622000-memory.dmp

Filesize
584KB

Download
memory/1540-5-0x0000000074E20000-0x00000000755D0000-memory.dmp

Filesize
7.7MB

Download
memory/1540-4-0x0000000005660000-0x000000000566A000-memory.dmp

Filesize
40KB

Download
memory/1540-0-0x0000000074E2E000-0x0000000074E2F000-memory.dmp

Filesize
4KB

Download
memory/1540-10-0x0000000074E2E000-0x0000000074E2F000-memory.dmp

Filesize
4KB

Download
memory/1540-2-0x0000000005C00000-0x00000000061A4000-memory.dmp

Filesize
5.6MB

Download
memory/1540-25-0x0000000074E20000-0x00000000755D0000-memory.dmp

Filesize
7.7MB

Download
memory/1540-1-0x0000000000B70000-0x0000000000BB6000-memory.dmp

Filesize
280KB

Download
memory/2652-26-0x0000000074E20000-0x00000000755D0000-memory.dmp

Filesize
7.7MB

Download
memory/2652-27-0x0000000074E20000-0x00000000755D0000-memory.dmp

Filesize
7.7MB

Download
memory/2652-31-0x0000000074E20000-0x00000000755D0000-memory.dmp

Filesize
7.7MB

Download
memory/4396-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads