asyncrat | 3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4

General

Target

3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe
Size

268KB
MD5

27e21944f68cafbaff6317bdc87e1e25
SHA1

5b4f54139518903f3ff1ec5c4c2b78692e432c5b
SHA256

3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4
SHA512

eb7d00abd4d865a07b09271980cfd9103d1429193e161b14f299d62adfb26882a526ecdc298c3bc04609007aba495f9198e99ce6e8638e121a416fc1145fae1d
SSDEEP

3072:WdvzDqxs8ORikgogWfiuRXd3YmSffdTKXNXANewGBvskX1pWA/s8DF6:WFzDqa86hV6uRRqX1evPlwAEQF6

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

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.

Processes:

resource	yara_rule
behavioral2/memory/4960-29-0x0000000000400000-0x0000000000430000-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

Processes:

3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe

Executes dropped EXE 1 IoCs

Processes:

HiPatchService.exe

pid process

3228 HiPatchService.exe

pid	process
3228	HiPatchService.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HiPatch = "C:\\Users\\Admin\\AppData\\Roaming\\HiPatch\\HiPatchService.exe"	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

HiPatchService.exe

description pid process target process

PID 3228 set thread context of 4960 3228 HiPatchService.exe RegAsm.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	pid	process	target process
PID 3228 set thread context of 4960	3228	HiPatchService.exe	RegAsm.exe

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

Processes:

3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exeHiPatchService.execmd.exetimeout.exeRegAsm.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.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

Processes:

RegAsm.exe

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

Processes:

timeout.exe

pid process

2012 timeout.exe

pid	process
2012	timeout.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

Processes:

RegAsm.exe

pid	process
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe
4960	RegAsm.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.execmd.exeHiPatchService.exe

description	pid	process	target process
PID 3320 wrote to memory of 3228	3320	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	HiPatchService.exe
PID 3320 wrote to memory of 3228	3320	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	HiPatchService.exe
PID 3320 wrote to memory of 3228	3320	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	HiPatchService.exe
PID 3320 wrote to memory of 4076	3320	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	cmd.exe
PID 3320 wrote to memory of 4076	3320	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	cmd.exe
PID 3320 wrote to memory of 4076	3320	3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe	cmd.exe
PID 4076 wrote to memory of 2012	4076	cmd.exe	timeout.exe
PID 4076 wrote to memory of 2012	4076	cmd.exe	timeout.exe
PID 4076 wrote to memory of 2012	4076	cmd.exe	timeout.exe
PID 3228 wrote to memory of 4960	3228	HiPatchService.exe	RegAsm.exe
PID 3228 wrote to memory of 4960	3228	HiPatchService.exe	RegAsm.exe
PID 3228 wrote to memory of 4960	3228	HiPatchService.exe	RegAsm.exe
PID 3228 wrote to memory of 4960	3228	HiPatchService.exe	RegAsm.exe
PID 3228 wrote to memory of 4960	3228	HiPatchService.exe	RegAsm.exe
PID 3228 wrote to memory of 4960	3228	HiPatchService.exe	RegAsm.exe
PID 3228 wrote to memory of 4960	3228	HiPatchService.exe	RegAsm.exe
PID 3228 wrote to memory of 4960	3228	HiPatchService.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe
"C:\Users\Admin\AppData\Local\Temp\3713bfe60a8aa6b8b1e18c24620be65f1408f558b19ff12d1f36e13cdde0bba4.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3320

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:3228

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:4960

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:4076

C:\Windows\SysWOW64\timeout.exe
timeout /t 180
3⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
PID:2012

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:4664

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
268KB

MD5
0a2ee1e9768118e5d6776eb26026f896

SHA1
02a77954189ee221c8dc6ecf80d73dfd4fcbb152

SHA256
867b18b5309aa1878c9a85d8c4487ed89439065e8424ebdc3def8e395f961a3a

SHA512
af3a0cb1423cb7790fa7c28b1d532790eb442bb888e580937f7f83b1f527cde33457bdc3521b706ef2cead04f80a9d7d4bba255a54faec904ba5cee607d70ac8

Download Submit
memory/3228-31-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/3228-27-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/3228-26-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/3320-6-0x0000000005910000-0x000000000591A000-memory.dmp

Filesize
40KB

Download
memory/3320-0-0x000000007522E000-0x000000007522F000-memory.dmp

Filesize
4KB

Download
memory/3320-10-0x000000007522E000-0x000000007522F000-memory.dmp

Filesize
4KB

Download
memory/3320-5-0x0000000005920000-0x000000000592A000-memory.dmp

Filesize
40KB

Download
memory/3320-25-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/3320-4-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/3320-3-0x0000000005770000-0x0000000005802000-memory.dmp

Filesize
584KB

Download
memory/3320-2-0x0000000005C40000-0x00000000061E4000-memory.dmp

Filesize
5.6MB

Download
memory/3320-1-0x0000000000D40000-0x0000000000D86000-memory.dmp

Filesize
280KB

Download
memory/4960-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads