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 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/3408-29-0x0000000000400000-0x0000000000430000-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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe

Executes dropped EXE 1 IoCs

pid	Process
4152	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-1-5-21-4050598569-1597076380-177084960-1000\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 4152 set thread context of 3408	4152	HiPatchService.exe	93

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	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.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
1368	timeout.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe
3408	RegAsm.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 3832 wrote to memory of 4152	3832	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe	86
PID 3832 wrote to memory of 4152	3832	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe	86
PID 3832 wrote to memory of 4152	3832	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe	86
PID 3832 wrote to memory of 2044	3832	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe	87
PID 3832 wrote to memory of 2044	3832	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe	87
PID 3832 wrote to memory of 2044	3832	fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe	87
PID 2044 wrote to memory of 1368	2044	cmd.exe	89
PID 2044 wrote to memory of 1368	2044	cmd.exe	89
PID 2044 wrote to memory of 1368	2044	cmd.exe	89
PID 4152 wrote to memory of 3408	4152	HiPatchService.exe	93
PID 4152 wrote to memory of 3408	4152	HiPatchService.exe	93
PID 4152 wrote to memory of 3408	4152	HiPatchService.exe	93
PID 4152 wrote to memory of 3408	4152	HiPatchService.exe	93
PID 4152 wrote to memory of 3408	4152	HiPatchService.exe	93
PID 4152 wrote to memory of 3408	4152	HiPatchService.exe	93
PID 4152 wrote to memory of 3408	4152	HiPatchService.exe	93
PID 4152 wrote to memory of 3408	4152	HiPatchService.exe	93

C:\Users\Admin\AppData\Local\Temp\fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe
"C:\Users\Admin\AppData\Local\Temp\fc84e1e6ba3da99670ea27d83decb0d7fc0fd58c85b2d6990521f9b5f12604cc.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3832
- 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:4152
- - 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:3408
- 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:2044
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 180
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1368

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:2520

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
270KB

MD5
82c768c5d24127a9762943844689750f

SHA1
78eeee6893c00e72c4cbd20395bc3d761509db72

SHA256
34363e3030bc764345e30d956054c9c36eeb873d0652d74adf298c03e461c423

SHA512
92594dc6d4660419f8e5d55870b9d1f54411990d30baef17cc835940df9336b8d5705492c611894f0a17eb665cd51bff4ee5ebacd849cd830cd6c078097683b8

Download Submit
memory/3408-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3832-6-0x0000000004D60000-0x0000000004D6A000-memory.dmp

Filesize
40KB

Download
memory/3832-5-0x00000000749D0000-0x0000000075180000-memory.dmp

Filesize
7.7MB

Download
memory/3832-4-0x0000000004D70000-0x0000000004D7A000-memory.dmp

Filesize
40KB

Download
memory/3832-0-0x00000000749DE000-0x00000000749DF000-memory.dmp

Filesize
4KB

Download
memory/3832-10-0x00000000749DE000-0x00000000749DF000-memory.dmp

Filesize
4KB

Download
memory/3832-3-0x0000000004CB0000-0x0000000004D42000-memory.dmp

Filesize
584KB

Download
memory/3832-25-0x00000000749D0000-0x0000000075180000-memory.dmp

Filesize
7.7MB

Download
memory/3832-2-0x0000000005350000-0x00000000058F4000-memory.dmp

Filesize
5.6MB

Download
memory/3832-1-0x00000000003C0000-0x0000000000406000-memory.dmp

Filesize
280KB

Download
memory/4152-26-0x00000000749D0000-0x0000000075180000-memory.dmp

Filesize
7.7MB

Download
memory/4152-28-0x00000000749D0000-0x0000000075180000-memory.dmp

Filesize
7.7MB

Download
memory/4152-31-0x00000000749D0000-0x0000000075180000-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