asyncrat | b1470505ff1ab8e3f78abe63e49b74a63d9bfc2c412091a355749508c405eebd

Analysis

max time kernel
117s
max time network
20s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
31-07-2024 07:31

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General

Target

89ef6c63f32f21d045023dc226a15540N.exe
Size

267KB
MD5

89ef6c63f32f21d045023dc226a15540
SHA1

fda06ef5c23e4cf114764c4b825a7c6540d5591e
SHA256

b1470505ff1ab8e3f78abe63e49b74a63d9bfc2c412091a355749508c405eebd
SHA512

a22ebd8d07d7dabe8550cc3f4eab4c47c3400eec0f96db3673b6bbb3abeb477ad2f0e9760d0940c6d0f69e65b849f21d81d66977fdf793b1705156f27f9cff18
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/sa:WFzDqa86hV6uRRqX1evPlwAEa

Score

10^/10

asyncrat discovery persistence rat

Malware Config

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/2504-34-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2504-36-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2504-35-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2504-31-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2504-29-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def

Executes dropped EXE 1 IoCs

pid	Process
2720	HiPatchService.exe

Loads dropped DLL 1 IoCs

pid	Process
2292	89ef6c63f32f21d045023dc226a15540N.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-1-5-21-940600906-3464502421-4240639183-1000\Software\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	89ef6c63f32f21d045023dc226a15540N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2720 set thread context of 2504	2720	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	89ef6c63f32f21d045023dc226a15540N.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 12 IoCs

pid	Process
2720	HiPatchService.exe
2720	HiPatchService.exe
2504	RegAsm.exe
2504	RegAsm.exe
2504	RegAsm.exe
2504	RegAsm.exe
2504	RegAsm.exe
2504	RegAsm.exe
2504	RegAsm.exe
2504	RegAsm.exe
2504	RegAsm.exe
2504	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2720	HiPatchService.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2292 wrote to memory of 2720	2292	89ef6c63f32f21d045023dc226a15540N.exe	30
PID 2292 wrote to memory of 2720	2292	89ef6c63f32f21d045023dc226a15540N.exe	30
PID 2292 wrote to memory of 2720	2292	89ef6c63f32f21d045023dc226a15540N.exe	30
PID 2292 wrote to memory of 2720	2292	89ef6c63f32f21d045023dc226a15540N.exe	30
PID 2292 wrote to memory of 2720	2292	89ef6c63f32f21d045023dc226a15540N.exe	30
PID 2292 wrote to memory of 2720	2292	89ef6c63f32f21d045023dc226a15540N.exe	30
PID 2292 wrote to memory of 2720	2292	89ef6c63f32f21d045023dc226a15540N.exe	30
PID 2292 wrote to memory of 2652	2292	89ef6c63f32f21d045023dc226a15540N.exe	31
PID 2292 wrote to memory of 2652	2292	89ef6c63f32f21d045023dc226a15540N.exe	31
PID 2292 wrote to memory of 2652	2292	89ef6c63f32f21d045023dc226a15540N.exe	31
PID 2292 wrote to memory of 2652	2292	89ef6c63f32f21d045023dc226a15540N.exe	31
PID 2292 wrote to memory of 2652	2292	89ef6c63f32f21d045023dc226a15540N.exe	31
PID 2292 wrote to memory of 2652	2292	89ef6c63f32f21d045023dc226a15540N.exe	31
PID 2292 wrote to memory of 2652	2292	89ef6c63f32f21d045023dc226a15540N.exe	31
PID 2720 wrote to memory of 2732	2720	HiPatchService.exe	33
PID 2720 wrote to memory of 2732	2720	HiPatchService.exe	33
PID 2720 wrote to memory of 2732	2720	HiPatchService.exe	33
PID 2720 wrote to memory of 2732	2720	HiPatchService.exe	33
PID 2720 wrote to memory of 2732	2720	HiPatchService.exe	33
PID 2720 wrote to memory of 2732	2720	HiPatchService.exe	33
PID 2720 wrote to memory of 2732	2720	HiPatchService.exe	33
PID 2720 wrote to memory of 2504	2720	HiPatchService.exe	34
PID 2720 wrote to memory of 2504	2720	HiPatchService.exe	34
PID 2720 wrote to memory of 2504	2720	HiPatchService.exe	34
PID 2720 wrote to memory of 2504	2720	HiPatchService.exe	34
PID 2720 wrote to memory of 2504	2720	HiPatchService.exe	34
PID 2720 wrote to memory of 2504	2720	HiPatchService.exe	34
PID 2720 wrote to memory of 2504	2720	HiPatchService.exe	34
PID 2720 wrote to memory of 2504	2720	HiPatchService.exe	34
PID 2720 wrote to memory of 2504	2720	HiPatchService.exe	34
PID 2720 wrote to memory of 2504	2720	HiPatchService.exe	34
PID 2720 wrote to memory of 2504	2720	HiPatchService.exe	34
PID 2720 wrote to memory of 2504	2720	HiPatchService.exe	34

C:\Users\Admin\AppData\Local\Temp\89ef6c63f32f21d045023dc226a15540N.exe
"C:\Users\Admin\AppData\Local\Temp\89ef6c63f32f21d045023dc226a15540N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2292
- 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 behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2720
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    PID:2732
- - 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:2504
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2652

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:2976

Network

MITRE ATT&CK Enterprise v15

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

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
267KB

MD5
49185b52a53e03589687e9f844b9425c

SHA1
03f22445d3d6980fd9de6e70a4fc01ba8cacebe9

SHA256
f8350f1fad1dcc90d3d66c7cc3a7ac9f4206f580df4ede1f763c37e76c300ba7

SHA512
2c44296b2ecec01e99eced15f2f2802e60bd349bcf3bf75e5ae14feccd0bf37c668dd9249caa2c0d433cc1655f34b57e07f2e08d2fdb0764f879df58779de2f7

Download Submit
memory/2292-24-0x0000000074190000-0x000000007487E000-memory.dmp

Filesize
6.9MB

Download
memory/2292-0-0x000000007419E000-0x000000007419F000-memory.dmp

Filesize
4KB

Download
memory/2292-2-0x0000000000340000-0x000000000034A000-memory.dmp

Filesize
40KB

Download
memory/2292-1-0x0000000001360000-0x00000000013A6000-memory.dmp

Filesize
280KB

Download
memory/2292-3-0x0000000074190000-0x000000007487E000-memory.dmp

Filesize
6.9MB

Download
memory/2504-35-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2504-25-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2504-34-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2504-36-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2504-33-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2504-31-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2504-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2504-27-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2720-22-0x0000000000F50000-0x0000000000F96000-memory.dmp

Filesize
280KB

Download
memory/2720-21-0x0000000074190000-0x000000007487E000-memory.dmp

Filesize
6.9MB

Download
memory/2720-37-0x0000000074190000-0x000000007487E000-memory.dmp

Filesize
6.9MB

Download