asyncrat | 4724db8a3fcb7b6fb2fcf38db1267514c1f16cb6d1b747d6d1b1710509c709ba

General

Target

b1d13a3d1d3fa5786cb1b48d3aa64e90N.exe
Size

266KB
MD5

b1d13a3d1d3fa5786cb1b48d3aa64e90
SHA1

001d109341ce43ec309910afbb84cf1644fc8460
SHA256

4724db8a3fcb7b6fb2fcf38db1267514c1f16cb6d1b747d6d1b1710509c709ba
SHA512

077f9f9cbc9800f560fa968976b588c80e235745db3395995eaf533c80e2daa7fc8cedf7bc631a7b455caa01ba7f019b8d9f1a05c7d18520741c7468f8f95c68
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/r:WFzDqa86hV6uRRqX1evPlwAD

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/1928-33-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/1928-36-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/1928-38-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/1928-37-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/1928-31-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def

Executes dropped EXE 1 IoCs

pid	Process
2072	HiPatchService.exe

Loads dropped DLL 1 IoCs

pid	Process
2336	b1d13a3d1d3fa5786cb1b48d3aa64e90N.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-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	b1d13a3d1d3fa5786cb1b48d3aa64e90N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2072 set thread context of 1928	2072	HiPatchService.exe	34

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	b1d13a3d1d3fa5786cb1b48d3aa64e90N.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
1928	RegAsm.exe
1928	RegAsm.exe
1928	RegAsm.exe
1928	RegAsm.exe
1928	RegAsm.exe
1928	RegAsm.exe
1928	RegAsm.exe
1928	RegAsm.exe
1928	RegAsm.exe
1928	RegAsm.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2336 wrote to memory of 2072	2336	b1d13a3d1d3fa5786cb1b48d3aa64e90N.exe	31
PID 2336 wrote to memory of 2072	2336	b1d13a3d1d3fa5786cb1b48d3aa64e90N.exe	31
PID 2336 wrote to memory of 2072	2336	b1d13a3d1d3fa5786cb1b48d3aa64e90N.exe	31
PID 2336 wrote to memory of 2072	2336	b1d13a3d1d3fa5786cb1b48d3aa64e90N.exe	31
PID 2336 wrote to memory of 2072	2336	b1d13a3d1d3fa5786cb1b48d3aa64e90N.exe	31
PID 2336 wrote to memory of 2072	2336	b1d13a3d1d3fa5786cb1b48d3aa64e90N.exe	31
PID 2336 wrote to memory of 2072	2336	b1d13a3d1d3fa5786cb1b48d3aa64e90N.exe	31
PID 2336 wrote to memory of 2640	2336	b1d13a3d1d3fa5786cb1b48d3aa64e90N.exe	32
PID 2336 wrote to memory of 2640	2336	b1d13a3d1d3fa5786cb1b48d3aa64e90N.exe	32
PID 2336 wrote to memory of 2640	2336	b1d13a3d1d3fa5786cb1b48d3aa64e90N.exe	32
PID 2336 wrote to memory of 2640	2336	b1d13a3d1d3fa5786cb1b48d3aa64e90N.exe	32
PID 2336 wrote to memory of 2640	2336	b1d13a3d1d3fa5786cb1b48d3aa64e90N.exe	32
PID 2336 wrote to memory of 2640	2336	b1d13a3d1d3fa5786cb1b48d3aa64e90N.exe	32
PID 2336 wrote to memory of 2640	2336	b1d13a3d1d3fa5786cb1b48d3aa64e90N.exe	32
PID 2072 wrote to memory of 1928	2072	HiPatchService.exe	34
PID 2072 wrote to memory of 1928	2072	HiPatchService.exe	34
PID 2072 wrote to memory of 1928	2072	HiPatchService.exe	34
PID 2072 wrote to memory of 1928	2072	HiPatchService.exe	34
PID 2072 wrote to memory of 1928	2072	HiPatchService.exe	34
PID 2072 wrote to memory of 1928	2072	HiPatchService.exe	34
PID 2072 wrote to memory of 1928	2072	HiPatchService.exe	34
PID 2072 wrote to memory of 1928	2072	HiPatchService.exe	34
PID 2072 wrote to memory of 1928	2072	HiPatchService.exe	34
PID 2072 wrote to memory of 1928	2072	HiPatchService.exe	34
PID 2072 wrote to memory of 1928	2072	HiPatchService.exe	34
PID 2072 wrote to memory of 1928	2072	HiPatchService.exe	34

C:\Users\Admin\AppData\Local\Temp\b1d13a3d1d3fa5786cb1b48d3aa64e90N.exe
"C:\Users\Admin\AppData\Local\Temp\b1d13a3d1d3fa5786cb1b48d3aa64e90N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2336
- 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:2072
- - 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:1928
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2640

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:2604

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
266KB

MD5
196ea1bc9181178c0c2a629c5a6f2e6b

SHA1
bfc7cf7f7a2c8ecc69d4f26bcce987e667b7f520

SHA256
43ccf2ffa5de5ce46e88ee686085e0b0b99ac2cb4f433f0b8d39c3d332ebdb01

SHA512
029166ad0abc4915ba76ddfc47b89980bd67d03e38850fcfc2f40190dd98e6fab3af2776d7ce48d568fae7772c954775b33bc41e8895b619d71899d65a4dc98f

Download Submit
memory/1928-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1928-33-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1928-27-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1928-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1928-31-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1928-37-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1928-38-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1928-36-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2072-22-0x00000000012F0000-0x0000000001336000-memory.dmp

Filesize
280KB

Download
memory/2072-24-0x0000000074300000-0x00000000749EE000-memory.dmp

Filesize
6.9MB

Download
memory/2072-39-0x0000000074300000-0x00000000749EE000-memory.dmp

Filesize
6.9MB

Download
memory/2336-26-0x0000000074300000-0x00000000749EE000-memory.dmp

Filesize
6.9MB

Download
memory/2336-23-0x0000000074300000-0x00000000749EE000-memory.dmp

Filesize
6.9MB

Download
memory/2336-3-0x0000000074300000-0x00000000749EE000-memory.dmp

Filesize
6.9MB

Download
memory/2336-0-0x000000007430E000-0x000000007430F000-memory.dmp

Filesize
4KB

Download
memory/2336-1-0x0000000000330000-0x0000000000376000-memory.dmp

Filesize
280KB

Download
memory/2336-2-0x0000000000390000-0x000000000039A000-memory.dmp

Filesize
40KB

Download
memory/2336-9-0x000000007430E000-0x000000007430F000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads