asyncrat | 6cddf9893889ed35ffa4bb276c245a538681cc636bd38468e2cc36a2c0aa6dff

General

Target

73901a494831623fade711debf5bc970N.exe
Size

267KB
MD5

73901a494831623fade711debf5bc970
SHA1

2dfbb0180d5c84aede8a3eab1f50b249a24f7900
SHA256

6cddf9893889ed35ffa4bb276c245a538681cc636bd38468e2cc36a2c0aa6dff
SHA512

42635070b0a77c1959a1ba6c206fef2c51cae3488136699ac69073c2e23c5b7d8fe544e412a5bc4a8118a77f7087adf6923b4dfd1d183736e6ec2547964f5c26
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/X:WFzDqa86hV6uRRqX1evPlwA/

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 5 IoCs

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

resource	yara_rule
behavioral1/memory/2788-31-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2788-29-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2788-36-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2788-35-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2788-34-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def

Executes dropped EXE 1 IoCs

pid	Process
2716	HiPatchService.exe

Loads dropped DLL 1 IoCs

pid	Process
1548	73901a494831623fade711debf5bc970N.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-1-5-21-2257386474-3982792636-3902186748-1000\Software\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	73901a494831623fade711debf5bc970N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2716 set thread context of 2788	2716	HiPatchService.exe	33

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 4 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	73901a494831623fade711debf5bc970N.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	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2788	RegAsm.exe
2788	RegAsm.exe
2788	RegAsm.exe
2788	RegAsm.exe
2788	RegAsm.exe
2788	RegAsm.exe
2788	RegAsm.exe
2788	RegAsm.exe
2788	RegAsm.exe
2788	RegAsm.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1548 wrote to memory of 2716	1548	73901a494831623fade711debf5bc970N.exe	30
PID 1548 wrote to memory of 2716	1548	73901a494831623fade711debf5bc970N.exe	30
PID 1548 wrote to memory of 2716	1548	73901a494831623fade711debf5bc970N.exe	30
PID 1548 wrote to memory of 2716	1548	73901a494831623fade711debf5bc970N.exe	30
PID 1548 wrote to memory of 2716	1548	73901a494831623fade711debf5bc970N.exe	30
PID 1548 wrote to memory of 2716	1548	73901a494831623fade711debf5bc970N.exe	30
PID 1548 wrote to memory of 2716	1548	73901a494831623fade711debf5bc970N.exe	30
PID 1548 wrote to memory of 2512	1548	73901a494831623fade711debf5bc970N.exe	31
PID 1548 wrote to memory of 2512	1548	73901a494831623fade711debf5bc970N.exe	31
PID 1548 wrote to memory of 2512	1548	73901a494831623fade711debf5bc970N.exe	31
PID 1548 wrote to memory of 2512	1548	73901a494831623fade711debf5bc970N.exe	31
PID 1548 wrote to memory of 2512	1548	73901a494831623fade711debf5bc970N.exe	31
PID 1548 wrote to memory of 2512	1548	73901a494831623fade711debf5bc970N.exe	31
PID 1548 wrote to memory of 2512	1548	73901a494831623fade711debf5bc970N.exe	31
PID 2716 wrote to memory of 2788	2716	HiPatchService.exe	33
PID 2716 wrote to memory of 2788	2716	HiPatchService.exe	33
PID 2716 wrote to memory of 2788	2716	HiPatchService.exe	33
PID 2716 wrote to memory of 2788	2716	HiPatchService.exe	33
PID 2716 wrote to memory of 2788	2716	HiPatchService.exe	33
PID 2716 wrote to memory of 2788	2716	HiPatchService.exe	33
PID 2716 wrote to memory of 2788	2716	HiPatchService.exe	33
PID 2716 wrote to memory of 2788	2716	HiPatchService.exe	33
PID 2716 wrote to memory of 2788	2716	HiPatchService.exe	33
PID 2716 wrote to memory of 2788	2716	HiPatchService.exe	33
PID 2716 wrote to memory of 2788	2716	HiPatchService.exe	33
PID 2716 wrote to memory of 2788	2716	HiPatchService.exe	33

C:\Users\Admin\AppData\Local\Temp\73901a494831623fade711debf5bc970N.exe
"C:\Users\Admin\AppData\Local\Temp\73901a494831623fade711debf5bc970N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1548
- 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:2716
- - 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
    - Suspicious behavior: EnumeratesProcesses
    PID:2788
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2512

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:1728

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

System Information Discovery

1

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
\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.exe

Filesize
267KB

MD5
60714a14e0fc5bd7dd448867825c687a

SHA1
5194fd4c2d4f4a343a9b166634133a69bfef5a93

SHA256
06e673eab2f59bc577c1c3c94c0bc59d1e2ae298accfcc6f1f208b85a83b9007

SHA512
6ad7371ace5d44bef6ba95a3941a7aff6909fc9c6b14e5dfe579697c26e6d63c8f654130e132c44c66d9e6da5c4d7486629d9f75f055070f77bf5173770a56d0

Download Submit
memory/1548-24-0x0000000074650000-0x0000000074D3E000-memory.dmp

Filesize
6.9MB

Download
memory/1548-2-0x0000000000200000-0x000000000020A000-memory.dmp

Filesize
40KB

Download
memory/1548-1-0x00000000012F0000-0x0000000001336000-memory.dmp

Filesize
280KB

Download
memory/1548-0-0x000000007465E000-0x000000007465F000-memory.dmp

Filesize
4KB

Download
memory/1548-3-0x0000000074650000-0x0000000074D3E000-memory.dmp

Filesize
6.9MB

Download
memory/2716-37-0x0000000074650000-0x0000000074D3E000-memory.dmp

Filesize
6.9MB

Download
memory/2716-22-0x0000000074650000-0x0000000074D3E000-memory.dmp

Filesize
6.9MB

Download
memory/2716-21-0x0000000000BC0000-0x0000000000C06000-memory.dmp

Filesize
280KB

Download
memory/2788-25-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2788-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2788-27-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2788-36-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2788-35-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2788-34-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2788-33-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2788-31-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads