asyncrat | 4e259bb72091a51873695eab388599bf4665c0cd04363d48481ff406771fdf1b

General

Target

4e259bb72091a51873695eab388599bf4665c0cd04363d48481ff406771fdf1b.exe
Size

270KB
MD5

403f3241e5af51a4cf93a0b7945a9d06
SHA1

6f40643395723f67f6d23ddc5261dbd65e093664
SHA256

4e259bb72091a51873695eab388599bf4665c0cd04363d48481ff406771fdf1b
SHA512

5ffa76cabbcd5020f249556fc52f74b7aab328c879fbd9a38cef7a0fe6e41218fcc4e405a296492df4c8261090dbe469ee40d540c0239f65d7ae445123ce1991
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/s8sdkXF:WFzDqa86hV6uRRqX1evPlwAEdkXF

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/2008-36-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2008-38-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2008-37-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2008-33-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def
behavioral1/memory/2008-31-0x0000000000400000-0x0000000000430000-memory.dmp	disable_win_def

Executes dropped EXE 1 IoCs

pid	Process
2748	HiPatchService.exe

Loads dropped DLL 1 IoCs

pid	Process
2760	4e259bb72091a51873695eab388599bf4665c0cd04363d48481ff406771fdf1b.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	4e259bb72091a51873695eab388599bf4665c0cd04363d48481ff406771fdf1b.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2748 set thread context of 2008	2748	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	4e259bb72091a51873695eab388599bf4665c0cd04363d48481ff406771fdf1b.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 10 IoCs

pid	Process
2008	RegAsm.exe
2008	RegAsm.exe
2008	RegAsm.exe
2008	RegAsm.exe
2008	RegAsm.exe
2008	RegAsm.exe
2008	RegAsm.exe
2008	RegAsm.exe
2008	RegAsm.exe
2008	RegAsm.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2760 wrote to memory of 2748	2760	4e259bb72091a51873695eab388599bf4665c0cd04363d48481ff406771fdf1b.exe	30
PID 2760 wrote to memory of 2748	2760	4e259bb72091a51873695eab388599bf4665c0cd04363d48481ff406771fdf1b.exe	30
PID 2760 wrote to memory of 2748	2760	4e259bb72091a51873695eab388599bf4665c0cd04363d48481ff406771fdf1b.exe	30
PID 2760 wrote to memory of 2748	2760	4e259bb72091a51873695eab388599bf4665c0cd04363d48481ff406771fdf1b.exe	30
PID 2760 wrote to memory of 2748	2760	4e259bb72091a51873695eab388599bf4665c0cd04363d48481ff406771fdf1b.exe	30
PID 2760 wrote to memory of 2748	2760	4e259bb72091a51873695eab388599bf4665c0cd04363d48481ff406771fdf1b.exe	30
PID 2760 wrote to memory of 2748	2760	4e259bb72091a51873695eab388599bf4665c0cd04363d48481ff406771fdf1b.exe	30
PID 2760 wrote to memory of 1736	2760	4e259bb72091a51873695eab388599bf4665c0cd04363d48481ff406771fdf1b.exe	31
PID 2760 wrote to memory of 1736	2760	4e259bb72091a51873695eab388599bf4665c0cd04363d48481ff406771fdf1b.exe	31
PID 2760 wrote to memory of 1736	2760	4e259bb72091a51873695eab388599bf4665c0cd04363d48481ff406771fdf1b.exe	31
PID 2760 wrote to memory of 1736	2760	4e259bb72091a51873695eab388599bf4665c0cd04363d48481ff406771fdf1b.exe	31
PID 2760 wrote to memory of 1736	2760	4e259bb72091a51873695eab388599bf4665c0cd04363d48481ff406771fdf1b.exe	31
PID 2760 wrote to memory of 1736	2760	4e259bb72091a51873695eab388599bf4665c0cd04363d48481ff406771fdf1b.exe	31
PID 2760 wrote to memory of 1736	2760	4e259bb72091a51873695eab388599bf4665c0cd04363d48481ff406771fdf1b.exe	31
PID 2748 wrote to memory of 2008	2748	HiPatchService.exe	33
PID 2748 wrote to memory of 2008	2748	HiPatchService.exe	33
PID 2748 wrote to memory of 2008	2748	HiPatchService.exe	33
PID 2748 wrote to memory of 2008	2748	HiPatchService.exe	33
PID 2748 wrote to memory of 2008	2748	HiPatchService.exe	33
PID 2748 wrote to memory of 2008	2748	HiPatchService.exe	33
PID 2748 wrote to memory of 2008	2748	HiPatchService.exe	33
PID 2748 wrote to memory of 2008	2748	HiPatchService.exe	33
PID 2748 wrote to memory of 2008	2748	HiPatchService.exe	33
PID 2748 wrote to memory of 2008	2748	HiPatchService.exe	33
PID 2748 wrote to memory of 2008	2748	HiPatchService.exe	33
PID 2748 wrote to memory of 2008	2748	HiPatchService.exe	33

C:\Users\Admin\AppData\Local\Temp\4e259bb72091a51873695eab388599bf4665c0cd04363d48481ff406771fdf1b.exe
"C:\Users\Admin\AppData\Local\Temp\4e259bb72091a51873695eab388599bf4665c0cd04363d48481ff406771fdf1b.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2760
- 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:2748
- - 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:2008
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Roaming\HiPatch\HiPatchService.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1736

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:2820

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
f0bf962130bfde998fd5f669720650e8

SHA1
33be3639bc249b5bab16a47ed8a14d727533a1ca

SHA256
7c20c3853459fa5aa72441a699b7334cd744a623a8e98ec6dcbacf3aa8ad5919

SHA512
17e0ab6ba577c88de5b96099bdaa726038cdcb009349825b1936219a6589ac8ad00232226d897f118e247a5fea4d204a044431abc8f5585549d4232a687edfec

Download Submit
memory/2008-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2008-38-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2008-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2008-31-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2008-33-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2008-37-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2008-28-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2008-36-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2748-39-0x0000000074C60000-0x000000007534E000-memory.dmp

Filesize
6.9MB

Download
memory/2748-25-0x0000000074C60000-0x000000007534E000-memory.dmp

Filesize
6.9MB

Download
memory/2748-22-0x0000000000100000-0x0000000000146000-memory.dmp

Filesize
280KB

Download
memory/2760-23-0x0000000074C60000-0x000000007534E000-memory.dmp

Filesize
6.9MB

Download
memory/2760-26-0x0000000074C60000-0x000000007534E000-memory.dmp

Filesize
6.9MB

Download
memory/2760-3-0x0000000074C60000-0x000000007534E000-memory.dmp

Filesize
6.9MB

Download
memory/2760-0-0x0000000074C6E000-0x0000000074C6F000-memory.dmp

Filesize
4KB

Download
memory/2760-2-0x0000000000310000-0x000000000031A000-memory.dmp

Filesize
40KB

Download
memory/2760-1-0x00000000012C0000-0x0000000001306000-memory.dmp

Filesize
280KB

Download
memory/2760-9-0x0000000074C6E000-0x0000000074C6F000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads