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 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/2744-35-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2744-37-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2744-36-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2744-32-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2744-31-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def

Executes dropped EXE 1 IoCs

pid	Process
2952	HiPatchService.exe

Loads dropped DLL 1 IoCs

pid	Process
1252	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.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-1-5-21-312935884-697965778-3955649944-1000\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 2952 set thread context of 2744	2952	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	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	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2744	RegAsm.exe
2744	RegAsm.exe
2744	RegAsm.exe
2744	RegAsm.exe
2744	RegAsm.exe
2744	RegAsm.exe
2744	RegAsm.exe
2744	RegAsm.exe
2744	RegAsm.exe
2744	RegAsm.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1252 wrote to memory of 2952	1252	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe	31
PID 1252 wrote to memory of 2952	1252	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe	31
PID 1252 wrote to memory of 2952	1252	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe	31
PID 1252 wrote to memory of 2952	1252	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe	31
PID 1252 wrote to memory of 2952	1252	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe	31
PID 1252 wrote to memory of 2952	1252	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe	31
PID 1252 wrote to memory of 2952	1252	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe	31
PID 1252 wrote to memory of 2832	1252	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe	32
PID 1252 wrote to memory of 2832	1252	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe	32
PID 1252 wrote to memory of 2832	1252	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe	32
PID 1252 wrote to memory of 2832	1252	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe	32
PID 1252 wrote to memory of 2832	1252	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe	32
PID 1252 wrote to memory of 2832	1252	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe	32
PID 1252 wrote to memory of 2832	1252	85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe	32
PID 2952 wrote to memory of 2744	2952	HiPatchService.exe	34
PID 2952 wrote to memory of 2744	2952	HiPatchService.exe	34
PID 2952 wrote to memory of 2744	2952	HiPatchService.exe	34
PID 2952 wrote to memory of 2744	2952	HiPatchService.exe	34
PID 2952 wrote to memory of 2744	2952	HiPatchService.exe	34
PID 2952 wrote to memory of 2744	2952	HiPatchService.exe	34
PID 2952 wrote to memory of 2744	2952	HiPatchService.exe	34
PID 2952 wrote to memory of 2744	2952	HiPatchService.exe	34
PID 2952 wrote to memory of 2744	2952	HiPatchService.exe	34
PID 2952 wrote to memory of 2744	2952	HiPatchService.exe	34
PID 2952 wrote to memory of 2744	2952	HiPatchService.exe	34
PID 2952 wrote to memory of 2744	2952	HiPatchService.exe	34

C:\Users\Admin\AppData\Local\Temp\85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe
"C:\Users\Admin\AppData\Local\Temp\85c5055c575118ed65e98450b8136f5c7d6c477e4d7930899550ff305e055672N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1252
- 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:2952
- - 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:2744
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2832

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:2704

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

Filesize
271KB

MD5
065a1efb6bdb310edbbc6479bc5d30ac

SHA1
64e01c8f47e8e9b37867321f10bd8f9281812b42

SHA256
7f6cdf57f13f4c26606d01acba0e19c8d56cdb8541a074d2b88383594795f28e

SHA512
070411d9295ba2539b5a8c9c63bc0ceda8e67038ceb4f04288009786b8140d4b8485c8707e123f015f5758642490f53003abbc2853358e156424aa26bdefed88

Download Submit
memory/1252-25-0x0000000074B80000-0x000000007526E000-memory.dmp

Filesize
6.9MB

Download
memory/1252-0-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

Filesize
4KB

Download
memory/1252-2-0x0000000000390000-0x000000000039A000-memory.dmp

Filesize
40KB

Download
memory/1252-1-0x00000000003A0000-0x00000000003E6000-memory.dmp

Filesize
280KB

Download
memory/1252-3-0x0000000074B80000-0x000000007526E000-memory.dmp

Filesize
6.9MB

Download
memory/1252-21-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

Filesize
4KB

Download
memory/2744-37-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2744-35-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2744-36-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2744-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2744-32-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2744-31-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2744-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2744-26-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2952-23-0x0000000074B80000-0x000000007526E000-memory.dmp

Filesize
6.9MB

Download
memory/2952-22-0x0000000000FB0000-0x0000000000FF6000-memory.dmp

Filesize
280KB

Download
memory/2952-38-0x0000000074B80000-0x000000007526E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads