asyncrat | 8bad37792d9e68fccedf51dcf152838e800ba353f5d602ef72fff87cb3ab24dd

Analysis

max time kernel
117s
max time network
20s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
16-08-2024 11:01

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General

Target

d27593e8068dcc8e3739e31b0ebc5190N.exe
Size

267KB
MD5

d27593e8068dcc8e3739e31b0ebc5190
SHA1

ea9686170a7094e0541e48774b1688ce203f8a48
SHA256

8bad37792d9e68fccedf51dcf152838e800ba353f5d602ef72fff87cb3ab24dd
SHA512

f215d97a07104c0b87267a29105620c58c69868bc599357e8d20c40b751bc697ad8822cf9e1934b5e01721154a928f0282148d480c96e5500f4d171bf305ebe1
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/d:WFzDqa86hV6uRRqX1evPlwA1

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

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/3016-37-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/3016-36-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/3016-35-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/3016-32-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/3016-30-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def

Executes dropped EXE 1 IoCs

pid	Process
1488	HiPatchService.exe

Loads dropped DLL 1 IoCs

pid	Process
1680	d27593e8068dcc8e3739e31b0ebc5190N.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-1-5-21-2257386474-3982792636-3902186748-1000\Software\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	d27593e8068dcc8e3739e31b0ebc5190N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1488 set thread context of 3016	1488	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	d27593e8068dcc8e3739e31b0ebc5190N.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
1488	HiPatchService.exe
1488	HiPatchService.exe
3016	RegAsm.exe
3016	RegAsm.exe
3016	RegAsm.exe
3016	RegAsm.exe
3016	RegAsm.exe
3016	RegAsm.exe
3016	RegAsm.exe
3016	RegAsm.exe
3016	RegAsm.exe
3016	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1488	HiPatchService.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1680 wrote to memory of 1488	1680	d27593e8068dcc8e3739e31b0ebc5190N.exe	30
PID 1680 wrote to memory of 1488	1680	d27593e8068dcc8e3739e31b0ebc5190N.exe	30
PID 1680 wrote to memory of 1488	1680	d27593e8068dcc8e3739e31b0ebc5190N.exe	30
PID 1680 wrote to memory of 1488	1680	d27593e8068dcc8e3739e31b0ebc5190N.exe	30
PID 1680 wrote to memory of 1488	1680	d27593e8068dcc8e3739e31b0ebc5190N.exe	30
PID 1680 wrote to memory of 1488	1680	d27593e8068dcc8e3739e31b0ebc5190N.exe	30
PID 1680 wrote to memory of 1488	1680	d27593e8068dcc8e3739e31b0ebc5190N.exe	30
PID 1680 wrote to memory of 2808	1680	d27593e8068dcc8e3739e31b0ebc5190N.exe	31
PID 1680 wrote to memory of 2808	1680	d27593e8068dcc8e3739e31b0ebc5190N.exe	31
PID 1680 wrote to memory of 2808	1680	d27593e8068dcc8e3739e31b0ebc5190N.exe	31
PID 1680 wrote to memory of 2808	1680	d27593e8068dcc8e3739e31b0ebc5190N.exe	31
PID 1680 wrote to memory of 2808	1680	d27593e8068dcc8e3739e31b0ebc5190N.exe	31
PID 1680 wrote to memory of 2808	1680	d27593e8068dcc8e3739e31b0ebc5190N.exe	31
PID 1680 wrote to memory of 2808	1680	d27593e8068dcc8e3739e31b0ebc5190N.exe	31
PID 1488 wrote to memory of 3044	1488	HiPatchService.exe	33
PID 1488 wrote to memory of 3044	1488	HiPatchService.exe	33
PID 1488 wrote to memory of 3044	1488	HiPatchService.exe	33
PID 1488 wrote to memory of 3044	1488	HiPatchService.exe	33
PID 1488 wrote to memory of 3044	1488	HiPatchService.exe	33
PID 1488 wrote to memory of 3044	1488	HiPatchService.exe	33
PID 1488 wrote to memory of 3044	1488	HiPatchService.exe	33
PID 1488 wrote to memory of 3016	1488	HiPatchService.exe	34
PID 1488 wrote to memory of 3016	1488	HiPatchService.exe	34
PID 1488 wrote to memory of 3016	1488	HiPatchService.exe	34
PID 1488 wrote to memory of 3016	1488	HiPatchService.exe	34
PID 1488 wrote to memory of 3016	1488	HiPatchService.exe	34
PID 1488 wrote to memory of 3016	1488	HiPatchService.exe	34
PID 1488 wrote to memory of 3016	1488	HiPatchService.exe	34
PID 1488 wrote to memory of 3016	1488	HiPatchService.exe	34
PID 1488 wrote to memory of 3016	1488	HiPatchService.exe	34
PID 1488 wrote to memory of 3016	1488	HiPatchService.exe	34
PID 1488 wrote to memory of 3016	1488	HiPatchService.exe	34
PID 1488 wrote to memory of 3016	1488	HiPatchService.exe	34

C:\Users\Admin\AppData\Local\Temp\d27593e8068dcc8e3739e31b0ebc5190N.exe
"C:\Users\Admin\AppData\Local\Temp\d27593e8068dcc8e3739e31b0ebc5190N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1680
- 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:1488
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    PID:3044
- - 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:3016
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2808

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:2092

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
268KB

MD5
df62a3851f417765587687a185356a9e

SHA1
4b82fb29b0a3aba4b1f74bec4fe72f7ad1abfdf5

SHA256
f0efa2ef6cf61bf6a8699efa26ca19fbd35d35fd6e440daa772bdd78e6a6371e

SHA512
74e00e65a514799cb30dffed39c8e1a3aaedd9e675e2b7dfd9007ebcd7c42c6f5e00a2a669054ca0f66171fbb9a12be2755d98845878491c1930b3a31c380803

Download Submit
memory/1488-23-0x0000000074710000-0x0000000074DFE000-memory.dmp

Filesize
6.9MB

Download
memory/1488-25-0x0000000000150000-0x0000000000196000-memory.dmp

Filesize
280KB

Download
memory/1488-38-0x0000000074710000-0x0000000074DFE000-memory.dmp

Filesize
6.9MB

Download
memory/1680-3-0x0000000074710000-0x0000000074DFE000-memory.dmp

Filesize
6.9MB

Download
memory/1680-2-0x0000000000250000-0x000000000025A000-memory.dmp

Filesize
40KB

Download
memory/1680-1-0x0000000000990000-0x00000000009D6000-memory.dmp

Filesize
280KB

Download
memory/1680-21-0x000000007471E000-0x000000007471F000-memory.dmp

Filesize
4KB

Download
memory/1680-24-0x0000000074710000-0x0000000074DFE000-memory.dmp

Filesize
6.9MB

Download
memory/1680-0-0x000000007471E000-0x000000007471F000-memory.dmp

Filesize
4KB

Download
memory/3016-37-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3016-36-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3016-35-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3016-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3016-32-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3016-30-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3016-28-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3016-26-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download