asyncrat | 295e4452bc2d90c550ffd4ed35b88b0902528eff36122e37fb5449762a66939b

General

Target

295e4452bc2d90c550ffd4ed35b88b0902528eff36122e37fb5449762a66939bN.exe
Size

270KB
MD5

8e5677d73dc60dc3c21e36263354f840
SHA1

127cb5b81621dc3e33d770f93a4c8accaa37a292
SHA256

295e4452bc2d90c550ffd4ed35b88b0902528eff36122e37fb5449762a66939b
SHA512

85d6769625dad507a5510f8a07148f23540c9f0bdd3b1895b82189370f43d90641ae7b399bf9a44f5482bc173d9ba374e700bbed13c7b90b2d74a5ba67929734
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/4512-29-0x0000000000400000-0x0000000000430000-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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	295e4452bc2d90c550ffd4ed35b88b0902528eff36122e37fb5449762a66939bN.exe

Executes dropped EXE 1 IoCs

pid	Process
2040	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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	295e4452bc2d90c550ffd4ed35b88b0902528eff36122e37fb5449762a66939bN.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2040 set thread context of 4512	2040	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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	295e4452bc2d90c550ffd4ed35b88b0902528eff36122e37fb5449762a66939bN.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 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

evasion

pid	Process
4408	timeout.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe
4512	RegAsm.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 412 wrote to memory of 2040	412	295e4452bc2d90c550ffd4ed35b88b0902528eff36122e37fb5449762a66939bN.exe	83
PID 412 wrote to memory of 2040	412	295e4452bc2d90c550ffd4ed35b88b0902528eff36122e37fb5449762a66939bN.exe	83
PID 412 wrote to memory of 2040	412	295e4452bc2d90c550ffd4ed35b88b0902528eff36122e37fb5449762a66939bN.exe	83
PID 412 wrote to memory of 4796	412	295e4452bc2d90c550ffd4ed35b88b0902528eff36122e37fb5449762a66939bN.exe	84
PID 412 wrote to memory of 4796	412	295e4452bc2d90c550ffd4ed35b88b0902528eff36122e37fb5449762a66939bN.exe	84
PID 412 wrote to memory of 4796	412	295e4452bc2d90c550ffd4ed35b88b0902528eff36122e37fb5449762a66939bN.exe	84
PID 4796 wrote to memory of 4408	4796	cmd.exe	86
PID 4796 wrote to memory of 4408	4796	cmd.exe	86
PID 4796 wrote to memory of 4408	4796	cmd.exe	86
PID 2040 wrote to memory of 4512	2040	HiPatchService.exe	93
PID 2040 wrote to memory of 4512	2040	HiPatchService.exe	93
PID 2040 wrote to memory of 4512	2040	HiPatchService.exe	93
PID 2040 wrote to memory of 4512	2040	HiPatchService.exe	93
PID 2040 wrote to memory of 4512	2040	HiPatchService.exe	93
PID 2040 wrote to memory of 4512	2040	HiPatchService.exe	93
PID 2040 wrote to memory of 4512	2040	HiPatchService.exe	93
PID 2040 wrote to memory of 4512	2040	HiPatchService.exe	93

C:\Users\Admin\AppData\Local\Temp\295e4452bc2d90c550ffd4ed35b88b0902528eff36122e37fb5449762a66939bN.exe
"C:\Users\Admin\AppData\Local\Temp\295e4452bc2d90c550ffd4ed35b88b0902528eff36122e37fb5449762a66939bN.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:412
- 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:2040
- - 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:4512
- 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:4796
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 180
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4408

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:2864

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
8d4070e83728bc5d23efd5e394e7a838

SHA1
dd8a5d40742bf2c11a126d548cc171072c3f2127

SHA256
1a0142e2e0112d4772e14409d88de0dd3d6e46c1600f70eafebbe23d7330dd0d

SHA512
88eb565b7c466152b9c75dd7b9836d4534d30fb501b07ba367d7c357e14d41c55880d923102fbe667bef2ca32f3e9d899049d8a4a21e80bce5526fa1266160d0

Download Submit
memory/412-6-0x0000000005730000-0x000000000573A000-memory.dmp

Filesize
40KB

Download
memory/412-3-0x0000000005590000-0x0000000005622000-memory.dmp

Filesize
584KB

Download
memory/412-4-0x0000000005740000-0x000000000574A000-memory.dmp

Filesize
40KB

Download
memory/412-5-0x0000000075180000-0x0000000075930000-memory.dmp

Filesize
7.7MB

Download
memory/412-0-0x000000007518E000-0x000000007518F000-memory.dmp

Filesize
4KB

Download
memory/412-10-0x000000007518E000-0x000000007518F000-memory.dmp

Filesize
4KB

Download
memory/412-2-0x0000000005A50000-0x0000000005FF4000-memory.dmp

Filesize
5.6MB

Download
memory/412-25-0x0000000075180000-0x0000000075930000-memory.dmp

Filesize
7.7MB

Download
memory/412-1-0x0000000000B60000-0x0000000000BA6000-memory.dmp

Filesize
280KB

Download
memory/2040-26-0x0000000075180000-0x0000000075930000-memory.dmp

Filesize
7.7MB

Download
memory/2040-27-0x0000000075180000-0x0000000075930000-memory.dmp

Filesize
7.7MB

Download
memory/2040-31-0x0000000075180000-0x0000000075930000-memory.dmp

Filesize
7.7MB

Download
memory/4512-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads