asyncrat | 13c1a8461adcef928a0ce6335a6cd31f04d0346ac21f799164a6ec9b855ad743

General

Target

13c1a8461adcef928a0ce6335a6cd31f04d0346ac21f799164a6ec9b855ad743N.exe
Size

270KB
MD5

0a958bb39869927c550fdb18b845c220
SHA1

080f14375eaaed153b5794d3c58930732d2164bb
SHA256

13c1a8461adcef928a0ce6335a6cd31f04d0346ac21f799164a6ec9b855ad743
SHA512

b500e7d72aabbecf0a145ffece61bd6ffff19653c00e603e699c477a7c8d7c21b73c5992adfbfd10a31c7b61d0ce5084b59d65bfbea1db9ef87360d90c79f329
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/s8sdI:WFzDqa86hV6uRRqX1evPlwAEdI

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/2204-30-0x0000000000400000-0x0000000000430000-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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	13c1a8461adcef928a0ce6335a6cd31f04d0346ac21f799164a6ec9b855ad743N.exe

Executes dropped EXE 1 IoCs

pid	Process
2876	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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	13c1a8461adcef928a0ce6335a6cd31f04d0346ac21f799164a6ec9b855ad743N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2876 set thread context of 2204	2876	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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	13c1a8461adcef928a0ce6335a6cd31f04d0346ac21f799164a6ec9b855ad743N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HiPatchService.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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 opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	RegAsm.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	RegAsm.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2804	timeout.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
2876	HiPatchService.exe
2876	HiPatchService.exe
2876	HiPatchService.exe
2876	HiPatchService.exe
2204	RegAsm.exe
2204	RegAsm.exe
2204	RegAsm.exe
2204	RegAsm.exe
2204	RegAsm.exe
2204	RegAsm.exe
2204	RegAsm.exe
2204	RegAsm.exe
2204	RegAsm.exe
2204	RegAsm.exe
2204	RegAsm.exe
2204	RegAsm.exe
2204	RegAsm.exe
2204	RegAsm.exe
2204	RegAsm.exe
2204	RegAsm.exe
2204	RegAsm.exe
2204	RegAsm.exe
2204	RegAsm.exe
2204	RegAsm.exe
2204	RegAsm.exe
2204	RegAsm.exe
2204	RegAsm.exe
2204	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2876	HiPatchService.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2940 wrote to memory of 2876	2940	13c1a8461adcef928a0ce6335a6cd31f04d0346ac21f799164a6ec9b855ad743N.exe	85
PID 2940 wrote to memory of 2876	2940	13c1a8461adcef928a0ce6335a6cd31f04d0346ac21f799164a6ec9b855ad743N.exe	85
PID 2940 wrote to memory of 2876	2940	13c1a8461adcef928a0ce6335a6cd31f04d0346ac21f799164a6ec9b855ad743N.exe	85
PID 2940 wrote to memory of 1196	2940	13c1a8461adcef928a0ce6335a6cd31f04d0346ac21f799164a6ec9b855ad743N.exe	86
PID 2940 wrote to memory of 1196	2940	13c1a8461adcef928a0ce6335a6cd31f04d0346ac21f799164a6ec9b855ad743N.exe	86
PID 2940 wrote to memory of 1196	2940	13c1a8461adcef928a0ce6335a6cd31f04d0346ac21f799164a6ec9b855ad743N.exe	86
PID 1196 wrote to memory of 2804	1196	cmd.exe	88
PID 1196 wrote to memory of 2804	1196	cmd.exe	88
PID 1196 wrote to memory of 2804	1196	cmd.exe	88
PID 2876 wrote to memory of 1940	2876	HiPatchService.exe	91
PID 2876 wrote to memory of 1940	2876	HiPatchService.exe	91
PID 2876 wrote to memory of 1940	2876	HiPatchService.exe	91
PID 2876 wrote to memory of 4400	2876	HiPatchService.exe	92
PID 2876 wrote to memory of 4400	2876	HiPatchService.exe	92
PID 2876 wrote to memory of 4400	2876	HiPatchService.exe	92
PID 2876 wrote to memory of 2204	2876	HiPatchService.exe	93
PID 2876 wrote to memory of 2204	2876	HiPatchService.exe	93
PID 2876 wrote to memory of 2204	2876	HiPatchService.exe	93
PID 2876 wrote to memory of 2204	2876	HiPatchService.exe	93
PID 2876 wrote to memory of 2204	2876	HiPatchService.exe	93
PID 2876 wrote to memory of 2204	2876	HiPatchService.exe	93
PID 2876 wrote to memory of 2204	2876	HiPatchService.exe	93
PID 2876 wrote to memory of 2204	2876	HiPatchService.exe	93

C:\Users\Admin\AppData\Local\Temp\13c1a8461adcef928a0ce6335a6cd31f04d0346ac21f799164a6ec9b855ad743N.exe
"C:\Users\Admin\AppData\Local\Temp\13c1a8461adcef928a0ce6335a6cd31f04d0346ac21f799164a6ec9b855ad743N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2940
- 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:2876
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    PID:1940
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    PID:4400
- - 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:2204
- 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:1196
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 180
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2804

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:5072

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
271KB

MD5
d1ad4f408b15ad1c7c613721e0164576

SHA1
fd51940242430637e7d002ee91cbc00867138266

SHA256
e8b104e38db0e1099f3a7aa32b51229827b98d4cf1ef5f3d0c32f0137b65333c

SHA512
281bf3623ef08dcd789a6f3662be6f67e85eb3e8beea3a23d03eb8251a955332b83f5a8f54893650f648c7678919a47844baa890daf1e01c23758c8a89a44d4a

Download Submit
memory/2204-30-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2876-26-0x0000000074EC0000-0x0000000075670000-memory.dmp

Filesize
7.7MB

Download
memory/2876-32-0x0000000074EC0000-0x0000000075670000-memory.dmp

Filesize
7.7MB

Download
memory/2876-29-0x0000000074EC0000-0x0000000075670000-memory.dmp

Filesize
7.7MB

Download
memory/2940-25-0x0000000074EC0000-0x0000000075670000-memory.dmp

Filesize
7.7MB

Download
memory/2940-2-0x00000000050A0000-0x0000000005644000-memory.dmp

Filesize
5.6MB

Download
memory/2940-0-0x0000000074ECE000-0x0000000074ECF000-memory.dmp

Filesize
4KB

Download
memory/2940-10-0x0000000074ECE000-0x0000000074ECF000-memory.dmp

Filesize
4KB

Download
memory/2940-6-0x0000000004C40000-0x0000000004C4A000-memory.dmp

Filesize
40KB

Download
memory/2940-27-0x0000000074EC0000-0x0000000075670000-memory.dmp

Filesize
7.7MB

Download
memory/2940-1-0x0000000000160000-0x00000000001A6000-memory.dmp

Filesize
280KB

Download
memory/2940-5-0x0000000074EC0000-0x0000000075670000-memory.dmp

Filesize
7.7MB

Download
memory/2940-4-0x0000000004C50000-0x0000000004C5A000-memory.dmp

Filesize
40KB

Download
memory/2940-3-0x0000000004B90000-0x0000000004C22000-memory.dmp

Filesize
584KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads