asyncrat | 4bcbb8983fe7425976c5a1789deff73fb138e80981f5ebfef1f835bcc6757760

Resubmissions

14/04/2025, 07:51

250414-jp1kfssjz9 10

14/04/2025, 07:46

250414-jl9nyssjt9 10

08/04/2025, 15:58

250408-tevasswl18 10

08/04/2025, 14:19

250408-rm2nqsvqw2 10

Analysis

max time kernel
147s
max time network
150s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20250410-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250410-enlocale:en-usos:windows10-ltsc_2021-x64system
submitted
14/04/2025, 07:51

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Report Analysis Logs

General

Target

f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe
Size

273KB
MD5

3ef5f71fdec671a56a286ea1866bb640
SHA1

04e90d67cfb7cb470ea9e6d48f4fc765b0ddb472
SHA256

f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b
SHA512

5e724aef6ad8258cf23363911fb74780ff9b6cd469c0ba478d72de2d86b295ed63901e89a0a05466b2c9a7925244f6b02aef3ab9d06f325a1301eb3aedd431d2
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/s8sdT/u:WFzDqa86hV6uRRqX1evPlwAEdS

Score

10^/10

asyncrat discovery persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.4.9G

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
behavioral5/memory/1912-24-0x0000000000400000-0x0000000000430000-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-1-5-21-1281280933-2069278784-2911492150-1000\Control Panel\International\Geo\Nation	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe

Executes dropped EXE 2 IoCs

pid	Process
1836	HiPatchService.exe
236	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-1-5-21-1281280933-2069278784-2911492150-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1836 set thread context of 1912	1836	HiPatchService.exe	90
PID 236 set thread context of 2584	236	HiPatchService.exe	91

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 7 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HiPatchService.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HiPatchService.exe

Checks processor information in registry 2 TTPs 4 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	RegAsm.exe
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	RegAsm.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	RegAsm.exe
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	RegAsm.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
3308	timeout.exe

Suspicious behavior: EnumeratesProcesses 52 IoCs

pid	Process
1912	RegAsm.exe
1912	RegAsm.exe
1912	RegAsm.exe
1912	RegAsm.exe
1912	RegAsm.exe
1912	RegAsm.exe
2584	RegAsm.exe
2584	RegAsm.exe
2584	RegAsm.exe
2584	RegAsm.exe
2584	RegAsm.exe
2584	RegAsm.exe
1912	RegAsm.exe
1912	RegAsm.exe
2584	RegAsm.exe
2584	RegAsm.exe
2584	RegAsm.exe
1912	RegAsm.exe
2584	RegAsm.exe
1912	RegAsm.exe
1912	RegAsm.exe
2584	RegAsm.exe
1912	RegAsm.exe
2584	RegAsm.exe
1912	RegAsm.exe
2584	RegAsm.exe
1912	RegAsm.exe
2584	RegAsm.exe
2584	RegAsm.exe
2584	RegAsm.exe
2584	RegAsm.exe
2584	RegAsm.exe
1912	RegAsm.exe
1912	RegAsm.exe
1912	RegAsm.exe
1912	RegAsm.exe
2584	RegAsm.exe
2584	RegAsm.exe
2584	RegAsm.exe
2584	RegAsm.exe
2584	RegAsm.exe
2584	RegAsm.exe
2584	RegAsm.exe
2584	RegAsm.exe
1912	RegAsm.exe
1912	RegAsm.exe
1912	RegAsm.exe
1912	RegAsm.exe
1912	RegAsm.exe
1912	RegAsm.exe
1912	RegAsm.exe
1912	RegAsm.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 4872 wrote to memory of 1836	4872	cmd.exe	85
PID 4872 wrote to memory of 1836	4872	cmd.exe	85
PID 4872 wrote to memory of 1836	4872	cmd.exe	85
PID 4060 wrote to memory of 236	4060	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe	86
PID 4060 wrote to memory of 236	4060	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe	86
PID 4060 wrote to memory of 236	4060	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe	86
PID 4060 wrote to memory of 4784	4060	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe	87
PID 4060 wrote to memory of 4784	4060	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe	87
PID 4060 wrote to memory of 4784	4060	f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe	87
PID 4784 wrote to memory of 3308	4784	cmd.exe	89
PID 4784 wrote to memory of 3308	4784	cmd.exe	89
PID 4784 wrote to memory of 3308	4784	cmd.exe	89
PID 1836 wrote to memory of 1912	1836	HiPatchService.exe	90
PID 1836 wrote to memory of 1912	1836	HiPatchService.exe	90
PID 1836 wrote to memory of 1912	1836	HiPatchService.exe	90
PID 1836 wrote to memory of 1912	1836	HiPatchService.exe	90
PID 1836 wrote to memory of 1912	1836	HiPatchService.exe	90
PID 1836 wrote to memory of 1912	1836	HiPatchService.exe	90
PID 1836 wrote to memory of 1912	1836	HiPatchService.exe	90
PID 1836 wrote to memory of 1912	1836	HiPatchService.exe	90
PID 236 wrote to memory of 2584	236	HiPatchService.exe	91
PID 236 wrote to memory of 2584	236	HiPatchService.exe	91
PID 236 wrote to memory of 2584	236	HiPatchService.exe	91
PID 236 wrote to memory of 2584	236	HiPatchService.exe	91
PID 236 wrote to memory of 2584	236	HiPatchService.exe	91
PID 236 wrote to memory of 2584	236	HiPatchService.exe	91
PID 236 wrote to memory of 2584	236	HiPatchService.exe	91
PID 236 wrote to memory of 2584	236	HiPatchService.exe	91

C:\Users\Admin\AppData\Local\Temp\f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe
"C:\Users\Admin\AppData\Local\Temp\f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4060
- 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:236
- - 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:2584
- 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:4784
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 180
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3308

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.exe
1⤵
- Suspicious use of WriteProcessMemory
PID:4872
- 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:1836
- - 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:1912

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:2204

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\HiPatchService.exe.log

Filesize
1KB

MD5
d4416b6bdae28d02f58ee6b2e5d7bbb7

SHA1
27d5896a0bc9b990a408e54a7d2a5a64d71e9e93

SHA256
ac6e8331d48bd24244597a326a3973f4d7b3328ecfec4e765f92c64967041689

SHA512
d86a7900137ec23e2e330a61843d0bc67f3f657a701ae3a8380ed324dcbeab3d26ece8264dfff2c2670e0b2c90fb6715d9959ae08f2ed4f574e45dc84d4e0e6c

Download Submit
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
273KB

MD5
c1f2b52a6a2e20be7163a47ce4f784fe

SHA1
92173ad9aff18a9d27bb0c4809bc231559bad18b

SHA256
65ed2b1074ddf3115f596a84876621d5ab2703da51a9562adbc54d8f562af7c8

SHA512
4632f79db22d3a23600b14297bc5466ed4141c1c77982e38cd1f58f7171b81d88760d8c8939eff2db3fa2458ab23f3d2ae94734a7a6f2ec5bcfda2eea65815fc

Download Submit
memory/236-29-0x0000000074790000-0x0000000074F41000-memory.dmp

Filesize
7.7MB

Download
memory/236-21-0x0000000074790000-0x0000000074F41000-memory.dmp

Filesize
7.7MB

Download
memory/1836-13-0x0000000074790000-0x0000000074F41000-memory.dmp

Filesize
7.7MB

Download
memory/1836-14-0x0000000074790000-0x0000000074F41000-memory.dmp

Filesize
7.7MB

Download
memory/1836-26-0x0000000074790000-0x0000000074F41000-memory.dmp

Filesize
7.7MB

Download
memory/1912-24-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/4060-0-0x000000007479E000-0x000000007479F000-memory.dmp

Filesize
4KB

Download
memory/4060-15-0x000000007479E000-0x000000007479F000-memory.dmp

Filesize
4KB

Download
memory/4060-16-0x0000000074790000-0x0000000074F41000-memory.dmp

Filesize
7.7MB

Download
memory/4060-4-0x0000000074790000-0x0000000074F41000-memory.dmp

Filesize
7.7MB

Download
memory/4060-22-0x0000000074790000-0x0000000074F41000-memory.dmp

Filesize
7.7MB

Download
memory/4060-3-0x0000000004FA0000-0x0000000005032000-memory.dmp

Filesize
584KB

Download
memory/4060-6-0x0000000004F50000-0x0000000004F5A000-memory.dmp

Filesize
40KB

Download
memory/4060-5-0x0000000004F60000-0x0000000004F6A000-memory.dmp

Filesize
40KB

Download
memory/4060-2-0x0000000005550000-0x0000000005AF6000-memory.dmp

Filesize
5.6MB

Download
memory/4060-1-0x0000000000530000-0x0000000000576000-memory.dmp

Filesize
280KB

Download