asyncrat | e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944

General

Target

e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe
Size

231KB
MD5

144f1b1c4b9cdad97d8dd1a3a89e7ea1
SHA1

1a11d76a6ab646a0d699efa0e5fc71de6e5af92c
SHA256

e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944
SHA512

2697bde82afdef6b3e9079e9add7a9026fffec2a9093932d6c05256fe73df0ef9a2fac4f26de28e2b5d87cc7dd0651dac80baa2a3841148409ab2c3ea32b6882
SSDEEP

6144:TZ+geAPqybJnO5AbpbO9jhJdrz8U6n4eOP07NyGyG2qYlw5S3U19:T4FvybJNpazzfoyG

Score

10^/10

asyncrat default persistence rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

66.235.168.242:4449

Mutex

scgofjarww

Attributes

delay
1
install
true
install_file
Loader.exe
install_folder
%AppData%

aes.plain

Extracted

Family

asyncrat

Botnet

Default

C2

66.235.168.242:3232

Attributes

delay
1
install
true
install_file
Loaader.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

VenomRAT 2 IoCs

Detects VenomRAT.

rat

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\Client.exe	VenomRAT
behavioral2/memory/2976-23-0x0000000000630000-0x0000000000648000-memory.dmp	VenomRAT

Async RAT payload 2 IoCs

rat

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\Client.exe	family_asyncrat
C:\Users\Admin\AppData\Local\Temp\Infected.exe	family_asyncrat

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exeInfected.exeClient.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	Infected.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	Client.exe

Executes dropped EXE 5 IoCs

Processes:

Client.exeInfected.exeWinDefend.exeLoaader.exeLoader.exe

pid process

2976 Client.exe
3548 Infected.exe
4400 WinDefend.exe
2384 Loaader.exe
908 Loader.exe

pid	process
2976	Client.exe
3548	Infected.exe
4400	WinDefend.exe
2384	Loaader.exe
908	Loader.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

WinDefend.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\YourAppName = "C:\\Users\\Admin\\AppData\\Local\\Temp\\WinDefend.exe"	WinDefend.exe

Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

6 api64.ipify.org
7 api64.ipify.org
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exeschtasks.exe

pid process

2372 schtasks.exe
4076 schtasks.exe
Delays execution with timeout.exe 2 IoCs
evasion

Processes:

timeout.exetimeout.exe

pid process

1368 timeout.exe
4260 timeout.exe

flow	ioc
6	api64.ipify.org
7	api64.ipify.org

pid	process
2372	schtasks.exe
4076	schtasks.exe

pid	process
1368	timeout.exe
4260	timeout.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

Infected.exeClient.exeLoader.exe

pid	process
3548	Infected.exe
3548	Infected.exe
3548	Infected.exe
3548	Infected.exe
3548	Infected.exe
3548	Infected.exe
3548	Infected.exe
3548	Infected.exe
3548	Infected.exe
3548	Infected.exe
3548	Infected.exe
3548	Infected.exe
3548	Infected.exe
3548	Infected.exe
3548	Infected.exe
3548	Infected.exe
3548	Infected.exe
3548	Infected.exe
3548	Infected.exe
3548	Infected.exe
3548	Infected.exe
2976	Client.exe
2976	Client.exe
2976	Client.exe
2976	Client.exe
2976	Client.exe
2976	Client.exe
2976	Client.exe
2976	Client.exe
2976	Client.exe
2976	Client.exe
2976	Client.exe
2976	Client.exe
2976	Client.exe
2976	Client.exe
2976	Client.exe
2976	Client.exe
2976	Client.exe
2976	Client.exe
2976	Client.exe
2976	Client.exe
2976	Client.exe
908	Loader.exe
908	Loader.exe
908	Loader.exe
908	Loader.exe
908	Loader.exe
908	Loader.exe
908	Loader.exe
908	Loader.exe
908	Loader.exe
908	Loader.exe
908	Loader.exe
908	Loader.exe
908	Loader.exe
908	Loader.exe
908	Loader.exe
908	Loader.exe
908	Loader.exe
908	Loader.exe
908	Loader.exe
908	Loader.exe
908	Loader.exe
908	Loader.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

Client.exeWinDefend.exeInfected.exeLoader.exeLoaader.exe

description	pid	process
Token: SeDebugPrivilege	2976	Client.exe
Token: SeDebugPrivilege	4400	WinDefend.exe
Token: SeDebugPrivilege	3548	Infected.exe
Token: SeDebugPrivilege	908	Loader.exe
Token: SeDebugPrivilege	2384	Loaader.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Loader.exe

pid process

908 Loader.exe

pid	process
908	Loader.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exeInfected.execmd.execmd.exeClient.execmd.execmd.exe

description	pid	process	target process
PID 1112 wrote to memory of 2976	1112	e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe	Client.exe
PID 1112 wrote to memory of 2976	1112	e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe	Client.exe
PID 1112 wrote to memory of 3548	1112	e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe	Infected.exe
PID 1112 wrote to memory of 3548	1112	e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe	Infected.exe
PID 1112 wrote to memory of 4400	1112	e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe	WinDefend.exe
PID 1112 wrote to memory of 4400	1112	e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe	WinDefend.exe
PID 1112 wrote to memory of 4400	1112	e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe	WinDefend.exe
PID 3548 wrote to memory of 4996	3548	Infected.exe	cmd.exe
PID 3548 wrote to memory of 4996	3548	Infected.exe	cmd.exe
PID 3548 wrote to memory of 1640	3548	Infected.exe	cmd.exe
PID 3548 wrote to memory of 1640	3548	Infected.exe	cmd.exe
PID 1640 wrote to memory of 1368	1640	cmd.exe	timeout.exe
PID 1640 wrote to memory of 1368	1640	cmd.exe	timeout.exe
PID 4996 wrote to memory of 2372	4996	cmd.exe	schtasks.exe
PID 4996 wrote to memory of 2372	4996	cmd.exe	schtasks.exe
PID 2976 wrote to memory of 1440	2976	Client.exe	cmd.exe
PID 2976 wrote to memory of 1440	2976	Client.exe	cmd.exe
PID 2976 wrote to memory of 4244	2976	Client.exe	cmd.exe
PID 2976 wrote to memory of 4244	2976	Client.exe	cmd.exe
PID 4244 wrote to memory of 4260	4244	cmd.exe	timeout.exe
PID 4244 wrote to memory of 4260	4244	cmd.exe	timeout.exe
PID 1440 wrote to memory of 4076	1440	cmd.exe	schtasks.exe
PID 1440 wrote to memory of 4076	1440	cmd.exe	schtasks.exe
PID 1640 wrote to memory of 2384	1640	cmd.exe	Loaader.exe
PID 1640 wrote to memory of 2384	1640	cmd.exe	Loaader.exe
PID 4244 wrote to memory of 908	4244	cmd.exe	Loader.exe
PID 4244 wrote to memory of 908	4244	cmd.exe	Loader.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe
"C:\Users\Admin\AppData\Local\Temp\e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1112

C:\Users\Admin\AppData\Local\Temp\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2976

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Loader" /tr '"C:\Users\Admin\AppData\Roaming\Loader.exe"' & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:1440

C:\Windows\system32\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "Loader" /tr '"C:\Users\Admin\AppData\Roaming\Loader.exe"'
4⤵
- Creates scheduled task(s)
PID:4076

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp3EFD.tmp.bat""
3⤵
- Suspicious use of WriteProcessMemory
PID:4244

C:\Windows\system32\timeout.exe
timeout 3
4⤵
- Delays execution with timeout.exe
PID:4260

C:\Users\Admin\AppData\Roaming\Loader.exe
"C:\Users\Admin\AppData\Roaming\Loader.exe"
4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:908

C:\Users\Admin\AppData\Local\Temp\Infected.exe
"C:\Users\Admin\AppData\Local\Temp\Infected.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3548

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Loaader" /tr '"C:\Users\Admin\AppData\Roaming\Loaader.exe"' & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:4996

C:\Windows\system32\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "Loaader" /tr '"C:\Users\Admin\AppData\Roaming\Loaader.exe"'
4⤵
- Creates scheduled task(s)
PID:2372

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp3E32.tmp.bat""
3⤵
- Suspicious use of WriteProcessMemory
PID:1640

C:\Windows\system32\timeout.exe
timeout 3
4⤵
- Delays execution with timeout.exe
PID:1368

C:\Users\Admin\AppData\Roaming\Loaader.exe
"C:\Users\Admin\AppData\Roaming\Loaader.exe"
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2384

C:\Users\Admin\AppData\Local\Temp\WinDefend.exe
"C:\Users\Admin\AppData\Local\Temp\WinDefend.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:4400

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\Client.exe
Filesize
74KB

MD5
7ac0adf482250172280defec7a7054da

SHA1
20a25f0da68c309d062c4628ead8b6f377ac7969

SHA256
3caa5f06008365fbecf46198744793c36c42309b49a6324bebe8123be10f87d5

SHA512
d03d033b931f3d39f95a1ec1cdc7d9014783f11b2438c265dd72c0bc34f9d5ced534a38c7c1c88ff930868fd9cf60521dd556b5c486c5cf364f798f39215a1aa

Download Submit
C:\Users\Admin\AppData\Local\Temp\Infected.exe
Filesize
63KB

MD5
b8d455465260a845db35492fda5a8888

SHA1
287b0ba049ad8f3be802d2224efb86dba72d3221

SHA256
a150a433c6a3e4278f6cc4cbc85863fc431e5c1e65081ad67253513e8ca01282

SHA512
5dba43ae31420de362593752e8ff491afbe8d20f183f6b95e6962ea1e637c7bf3bd50b5213e4d928a96b85d9b54841ee697798b0089624b13ef7eded826cd86a

Download Submit
C:\Users\Admin\AppData\Local\Temp\WinDefend.exe
Filesize
87KB

MD5
5fc6a541845fdafb597ddfb98fa28b54

SHA1
22e5dd50ddd71bc39c812db0f9b164ca10c556dd

SHA256
64e4dedb36812766c522c79cae57b7f3b2694efaa396151d4117a70282166117

SHA512
f174e4ccc89d4a7473001a9153a9c3d63bedd393dda1ea3be171768b7587846722ad07445adeafa52ef54802a8ac84eb33ab1799248dcbf7db60aa4f311da5e3

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp3E32.tmp.bat
Filesize
151B

MD5
48978ab9ad33d1ab51db12abf89d9671

SHA1
695cf45625b75164c0abc7c0d94d85248809b4b9

SHA256
52b529ce24d40dd03a45622aa0423959282103d4922075ca18d4746620156205

SHA512
4bdfde39f7b8b004baadb757365d1050938c1e65353a9810f6cc6e536b76d6033639060101bfa9a73eaa93d5da0029480e6f80ec423bcc691610d73aa350a095

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp3EFD.tmp.bat
Filesize
150B

MD5
a3b63fcb39a3d49fd1e43631c02929eb

SHA1
b8118e9537d5741647b09a2a389ac5f4f083a384

SHA256
3a0c36f7f331fbb79579923695885fee5111875e33281720b73a9d4766614efd

SHA512
e97d44b5bfb0ce2d57ddf968ea3d59d9be20e75567afa6fe75b80847c69732766c37da918026bdb7fdffb533b3d244805fc80e03afb3c9d6570a2d1d30a581f0

Download Submit
C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf
Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
C:\Users\Public\SSSS.log
Filesize
4KB

MD5
12d9ccdc20bf1b68472cd04b389f3686

SHA1
fe086c4e9860ad3d5c8b33bc878b6aeeed68e106

SHA256
8c02ca20ed2686bd98b8f9b503754098f752d603424b633bfc927d1ee9630ddf

SHA512
2dc23092df3baaf24f196f7d9cc56e20220fde776b3ba761b528efe1cc8d1d3874fb7aef9f10419f6b598e3cd19338e6e1f6ef5974e03958b1bf2a1c896052cb

Download Submit
memory/1112-1-0x00007FFFFD8A3000-0x00007FFFFD8A5000-memory.dmp

Filesize
8KB

Download
memory/1112-10-0x00007FFFFD8A0000-0x00007FFFFE361000-memory.dmp

Filesize
10.8MB

Download
memory/1112-42-0x00007FFFFD8A0000-0x00007FFFFE361000-memory.dmp

Filesize
10.8MB

Download
memory/1112-0-0x0000000000DF0000-0x0000000000E30000-memory.dmp

Filesize
256KB

Download
memory/2976-41-0x00007FFFFD8A0000-0x00007FFFFE361000-memory.dmp

Filesize
10.8MB

Download
memory/2976-36-0x00007FFFFD8A0000-0x00007FFFFE361000-memory.dmp

Filesize
10.8MB

Download
memory/2976-60-0x00007FFFFD8A0000-0x00007FFFFE361000-memory.dmp

Filesize
10.8MB

Download
memory/2976-23-0x0000000000630000-0x0000000000648000-memory.dmp

Filesize
96KB

Download
memory/3548-53-0x00007FFFFD8A0000-0x00007FFFFE361000-memory.dmp

Filesize
10.8MB

Download
memory/3548-44-0x00007FFFFD8A0000-0x00007FFFFE361000-memory.dmp

Filesize
10.8MB

Download
memory/3548-26-0x0000000000270000-0x0000000000286000-memory.dmp

Filesize
88KB

Download
memory/4400-43-0x0000000000670000-0x000000000068E000-memory.dmp

Filesize
120KB

Download
memory/4400-45-0x0000000000D70000-0x0000000000D76000-memory.dmp

Filesize
24KB

Download
memory/4400-46-0x0000000009BA0000-0x000000000A144000-memory.dmp

Filesize
5.6MB

Download
memory/4400-47-0x0000000004F90000-0x0000000005022000-memory.dmp

Filesize
584KB

Download
memory/4400-48-0x0000000002C20000-0x0000000002C2A000-memory.dmp

Filesize
40KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads