asyncrat | fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc

General

Target

fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe
Size

270KB
MD5

2b7b328370a631e8516ae38ac1529716
SHA1

b8440eaf2d72b21061534ba77028267478fae735
SHA256

fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc
SHA512

3833e1ddd3a7fa258a26effa4b3559db79a7ffb9c9b0d6880b0275b0d4c5ddc921f77c279390263ca4d90840b316ca35fdd31ed388c57773c247961e4544a3c7
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/s8sdka:WFzDqa86hV6uRRqX1evPlwAEdka

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/2672-29-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2672-36-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2672-35-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2672-34-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2672-31-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def

Executes dropped EXE 1 IoCs

pid	Process
2772	HiPatchService.exe

Loads dropped DLL 1 IoCs

pid	Process
2916	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2772 set thread context of 2672	2772	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	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HiPatchService.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2672	RegAsm.exe
2672	RegAsm.exe
2672	RegAsm.exe
2672	RegAsm.exe
2672	RegAsm.exe
2672	RegAsm.exe
2672	RegAsm.exe
2672	RegAsm.exe
2672	RegAsm.exe
2672	RegAsm.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2916 wrote to memory of 2772	2916	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe	30
PID 2916 wrote to memory of 2772	2916	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe	30
PID 2916 wrote to memory of 2772	2916	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe	30
PID 2916 wrote to memory of 2772	2916	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe	30
PID 2916 wrote to memory of 2772	2916	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe	30
PID 2916 wrote to memory of 2772	2916	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe	30
PID 2916 wrote to memory of 2772	2916	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe	30
PID 2916 wrote to memory of 2692	2916	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe	31
PID 2916 wrote to memory of 2692	2916	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe	31
PID 2916 wrote to memory of 2692	2916	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe	31
PID 2916 wrote to memory of 2692	2916	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe	31
PID 2916 wrote to memory of 2692	2916	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe	31
PID 2916 wrote to memory of 2692	2916	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe	31
PID 2916 wrote to memory of 2692	2916	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe	31
PID 2772 wrote to memory of 2672	2772	HiPatchService.exe	33
PID 2772 wrote to memory of 2672	2772	HiPatchService.exe	33
PID 2772 wrote to memory of 2672	2772	HiPatchService.exe	33
PID 2772 wrote to memory of 2672	2772	HiPatchService.exe	33
PID 2772 wrote to memory of 2672	2772	HiPatchService.exe	33
PID 2772 wrote to memory of 2672	2772	HiPatchService.exe	33
PID 2772 wrote to memory of 2672	2772	HiPatchService.exe	33
PID 2772 wrote to memory of 2672	2772	HiPatchService.exe	33
PID 2772 wrote to memory of 2672	2772	HiPatchService.exe	33
PID 2772 wrote to memory of 2672	2772	HiPatchService.exe	33
PID 2772 wrote to memory of 2672	2772	HiPatchService.exe	33
PID 2772 wrote to memory of 2672	2772	HiPatchService.exe	33

C:\Users\Admin\AppData\Local\Temp\fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe
"C:\Users\Admin\AppData\Local\Temp\fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2916
- 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:2772
- - 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:2672
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2692

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:2396

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
270KB

MD5
af14c5aa44c94335ca9333f941e90cc9

SHA1
f6704e0670b454b974111b173a445306ec5b87a4

SHA256
29110af3571f03a141abc5ddc75dc12a1b46067a6e543523b389a713f789937a

SHA512
08199107bf5863d96c106a70360ab3a0e55ea465628ccf3e973a1565dd6939c6b61997731894c922acdc3e2106a7374a06138198356385198b6e95c9e3802ca4

Download Submit
memory/2672-35-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2672-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2672-31-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2672-25-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2672-33-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2672-34-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2672-36-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2672-27-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2772-21-0x0000000074A80000-0x000000007516E000-memory.dmp

Filesize
6.9MB

Download
memory/2772-23-0x0000000001250000-0x0000000001296000-memory.dmp

Filesize
280KB

Download
memory/2772-37-0x0000000074A80000-0x000000007516E000-memory.dmp

Filesize
6.9MB

Download
memory/2916-22-0x0000000074A80000-0x000000007516E000-memory.dmp

Filesize
6.9MB

Download
memory/2916-0-0x0000000074A8E000-0x0000000074A8F000-memory.dmp

Filesize
4KB

Download
memory/2916-3-0x0000000074A80000-0x000000007516E000-memory.dmp

Filesize
6.9MB

Download
memory/2916-1-0x00000000010E0000-0x0000000001126000-memory.dmp

Filesize
280KB

Download
memory/2916-2-0x00000000003E0000-0x00000000003EA000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads