asyncrat | dc76a6c25a4b09e5303f1de55be91bedaf245ee4fca56df2d0bb1edf97d0bcec

General

Target

dc76a6c25a4b09e5303f1de55be91bedaf245ee4fca56df2d0bb1edf97d0bcecN.exe
Size

262KB
MD5

b35c19ed08ef62d477e5910f3b10fb20
SHA1

e606866e3cb26a1ea05ecc53365b58942027c676
SHA256

dc76a6c25a4b09e5303f1de55be91bedaf245ee4fca56df2d0bb1edf97d0bcec
SHA512

8abb754fc4d40c7b69575e9e5e84377931003f1b3e2e2a2b16ce00ac250a55737b171bdd14dd1865c30073788cedc97faef65625fc324c53bac949f6308a8736
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/eU:WFzDqa86hV6uRRqX1evPlwAb

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/3148-30-0x0000000000400000-0x0000000000430000-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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	dc76a6c25a4b09e5303f1de55be91bedaf245ee4fca56df2d0bb1edf97d0bcecN.exe

Executes dropped EXE 1 IoCs

pid	Process
3024	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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	dc76a6c25a4b09e5303f1de55be91bedaf245ee4fca56df2d0bb1edf97d0bcecN.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3024 set thread context of 3148	3024	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	dc76a6c25a4b09e5303f1de55be91bedaf245ee4fca56df2d0bb1edf97d0bcecN.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
3888	timeout.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
3024	HiPatchService.exe
3024	HiPatchService.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe
3148	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3024	HiPatchService.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 4832 wrote to memory of 3024	4832	dc76a6c25a4b09e5303f1de55be91bedaf245ee4fca56df2d0bb1edf97d0bcecN.exe	88
PID 4832 wrote to memory of 3024	4832	dc76a6c25a4b09e5303f1de55be91bedaf245ee4fca56df2d0bb1edf97d0bcecN.exe	88
PID 4832 wrote to memory of 3024	4832	dc76a6c25a4b09e5303f1de55be91bedaf245ee4fca56df2d0bb1edf97d0bcecN.exe	88
PID 4832 wrote to memory of 4300	4832	dc76a6c25a4b09e5303f1de55be91bedaf245ee4fca56df2d0bb1edf97d0bcecN.exe	89
PID 4832 wrote to memory of 4300	4832	dc76a6c25a4b09e5303f1de55be91bedaf245ee4fca56df2d0bb1edf97d0bcecN.exe	89
PID 4832 wrote to memory of 4300	4832	dc76a6c25a4b09e5303f1de55be91bedaf245ee4fca56df2d0bb1edf97d0bcecN.exe	89
PID 4300 wrote to memory of 3888	4300	cmd.exe	91
PID 4300 wrote to memory of 3888	4300	cmd.exe	91
PID 4300 wrote to memory of 3888	4300	cmd.exe	91
PID 3024 wrote to memory of 3628	3024	HiPatchService.exe	97
PID 3024 wrote to memory of 3628	3024	HiPatchService.exe	97
PID 3024 wrote to memory of 3628	3024	HiPatchService.exe	97
PID 3024 wrote to memory of 3148	3024	HiPatchService.exe	98
PID 3024 wrote to memory of 3148	3024	HiPatchService.exe	98
PID 3024 wrote to memory of 3148	3024	HiPatchService.exe	98
PID 3024 wrote to memory of 3148	3024	HiPatchService.exe	98
PID 3024 wrote to memory of 3148	3024	HiPatchService.exe	98
PID 3024 wrote to memory of 3148	3024	HiPatchService.exe	98
PID 3024 wrote to memory of 3148	3024	HiPatchService.exe	98
PID 3024 wrote to memory of 3148	3024	HiPatchService.exe	98

C:\Users\Admin\AppData\Local\Temp\dc76a6c25a4b09e5303f1de55be91bedaf245ee4fca56df2d0bb1edf97d0bcecN.exe
"C:\Users\Admin\AppData\Local\Temp\dc76a6c25a4b09e5303f1de55be91bedaf245ee4fca56df2d0bb1edf97d0bcecN.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4832
- 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 behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3024
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    PID:3628
- - 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:3148
- 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:4300
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 180
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3888

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:4288

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
262KB

MD5
6f9dcda7f2054a0bc5a63c16a7d99c13

SHA1
e46f9c9039a05808e36ac75ce384c8ab031cf931

SHA256
8cda346bf34420c3ba993f47ee576db544d56b769ab765691fdb02c9f1428458

SHA512
fa76e8d25fd7f54f6ca4495ae2681abab44d55f60a49ecfed84b5b51747e77b9034bb72f3680aca56e0661346e30eb687963320e67a7a9303f0e1918e7eabb95

Download Submit
memory/3024-28-0x0000000074C70000-0x0000000075420000-memory.dmp

Filesize
7.7MB

Download
memory/3024-26-0x0000000074C70000-0x0000000075420000-memory.dmp

Filesize
7.7MB

Download
memory/3024-32-0x0000000074C70000-0x0000000075420000-memory.dmp

Filesize
7.7MB

Download
memory/3148-30-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/4832-24-0x0000000074C70000-0x0000000075420000-memory.dmp

Filesize
7.7MB

Download
memory/4832-10-0x0000000074C7E000-0x0000000074C7F000-memory.dmp

Filesize
4KB

Download
memory/4832-2-0x0000000005850000-0x0000000005DF4000-memory.dmp

Filesize
5.6MB

Download
memory/4832-3-0x0000000005170000-0x0000000005202000-memory.dmp

Filesize
584KB

Download
memory/4832-27-0x0000000074C70000-0x0000000075420000-memory.dmp

Filesize
7.7MB

Download
memory/4832-6-0x0000000005210000-0x000000000521A000-memory.dmp

Filesize
40KB

Download
memory/4832-0-0x0000000074C7E000-0x0000000074C7F000-memory.dmp

Filesize
4KB

Download
memory/4832-1-0x0000000000740000-0x0000000000786000-memory.dmp

Filesize
280KB

Download
memory/4832-5-0x0000000005220000-0x000000000522A000-memory.dmp

Filesize
40KB

Download
memory/4832-4-0x0000000074C70000-0x0000000075420000-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