asyncrat | e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944

Resubmissions

Analysis

max time kernel
150s
max time network
155s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24-05-2024 12:28

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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

Botnet

Default

66.235.168.242:3232

Attributes

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

aes.plain

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

66.235.168.242:4449

Mutex

scgofjarww

Attributes

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

aes.plain

Signatures

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

VenomRAT 3 IoCs

Detects VenomRAT.

rat

Processes:

resource	yara_rule
behavioral1/memory/2084-7-0x00000000001B0000-0x00000000001C8000-memory.dmp	VenomRAT
C:\Users\Admin\AppData\Local\Temp\Client.exe	VenomRAT
behavioral1/memory/2492-53-0x0000000001080000-0x0000000001098000-memory.dmp	VenomRAT

Async RAT payload 2 IoCs

rat

Processes:

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

Executes dropped EXE 5 IoCs

Processes:

Client.exeInfected.exeWinDefend.exeLoader.exeLoaader.exe

pid process

2084 Client.exe
1332 Infected.exe
2948 WinDefend.exe
2492 Loader.exe
2828 Loaader.exe

pid	process
2084	Client.exe
1332	Infected.exe
2948	WinDefend.exe
2492	Loader.exe
2828	Loaader.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-1-5-21-330940541-141609230-1670313778-1000\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

4 api64.ipify.org
5 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

2288 schtasks.exe
2540 schtasks.exe
Delays execution with timeout.exe 2 IoCs
evasion

Processes:

timeout.exetimeout.exe

pid process

3004 timeout.exe
2752 timeout.exe

flow	ioc
4	api64.ipify.org
5	api64.ipify.org

pid	process
2288	schtasks.exe
2540	schtasks.exe

pid	process
3004	timeout.exe
2752	timeout.exe

Suspicious behavior: EnumeratesProcesses 37 IoCs

Processes:

Infected.exeClient.exeLoader.exe

pid	process
1332	Infected.exe
1332	Infected.exe
1332	Infected.exe
2084	Client.exe
2084	Client.exe
2084	Client.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe
2492	Loader.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

Client.exeInfected.exeWinDefend.exeLoader.exeLoaader.exe

description	pid	process
Token: SeDebugPrivilege	2084	Client.exe
Token: SeDebugPrivilege	1332	Infected.exe
Token: SeDebugPrivilege	2948	WinDefend.exe
Token: SeDebugPrivilege	2492	Loader.exe
Token: SeDebugPrivilege	2828	Loaader.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Loader.exe

pid process

2492 Loader.exe

pid	process
2492	Loader.exe

Suspicious use of WriteProcessMemory 40 IoCs

Processes:

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

description	pid	process	target process
PID 2180 wrote to memory of 2084	2180	e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe	Client.exe
PID 2180 wrote to memory of 2084	2180	e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe	Client.exe
PID 2180 wrote to memory of 2084	2180	e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe	Client.exe
PID 2180 wrote to memory of 1332	2180	e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe	Infected.exe
PID 2180 wrote to memory of 1332	2180	e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe	Infected.exe
PID 2180 wrote to memory of 1332	2180	e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe	Infected.exe
PID 2180 wrote to memory of 2948	2180	e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe	WinDefend.exe
PID 2180 wrote to memory of 2948	2180	e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe	WinDefend.exe
PID 2180 wrote to memory of 2948	2180	e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe	WinDefend.exe
PID 2180 wrote to memory of 2948	2180	e3f245020bcf6beaca39b8cc9eb06b3db7f209356e765f41d8306ad56735e944.exe	WinDefend.exe
PID 1332 wrote to memory of 2744	1332	Infected.exe	cmd.exe
PID 1332 wrote to memory of 2744	1332	Infected.exe	cmd.exe
PID 1332 wrote to memory of 2744	1332	Infected.exe	cmd.exe
PID 1332 wrote to memory of 2668	1332	Infected.exe	cmd.exe
PID 1332 wrote to memory of 2668	1332	Infected.exe	cmd.exe
PID 1332 wrote to memory of 2668	1332	Infected.exe	cmd.exe
PID 2744 wrote to memory of 2288	2744	cmd.exe	schtasks.exe
PID 2744 wrote to memory of 2288	2744	cmd.exe	schtasks.exe
PID 2744 wrote to memory of 2288	2744	cmd.exe	schtasks.exe
PID 2668 wrote to memory of 3004	2668	cmd.exe	timeout.exe
PID 2668 wrote to memory of 3004	2668	cmd.exe	timeout.exe
PID 2668 wrote to memory of 3004	2668	cmd.exe	timeout.exe
PID 2084 wrote to memory of 2988	2084	Client.exe	cmd.exe
PID 2084 wrote to memory of 2988	2084	Client.exe	cmd.exe
PID 2084 wrote to memory of 2988	2084	Client.exe	cmd.exe
PID 2084 wrote to memory of 2568	2084	Client.exe	cmd.exe
PID 2084 wrote to memory of 2568	2084	Client.exe	cmd.exe
PID 2084 wrote to memory of 2568	2084	Client.exe	cmd.exe
PID 2988 wrote to memory of 2540	2988	cmd.exe	schtasks.exe
PID 2988 wrote to memory of 2540	2988	cmd.exe	schtasks.exe
PID 2988 wrote to memory of 2540	2988	cmd.exe	schtasks.exe
PID 2568 wrote to memory of 2752	2568	cmd.exe	timeout.exe
PID 2568 wrote to memory of 2752	2568	cmd.exe	timeout.exe
PID 2568 wrote to memory of 2752	2568	cmd.exe	timeout.exe
PID 2568 wrote to memory of 2492	2568	cmd.exe	Loader.exe
PID 2568 wrote to memory of 2492	2568	cmd.exe	Loader.exe
PID 2568 wrote to memory of 2492	2568	cmd.exe	Loader.exe
PID 2668 wrote to memory of 2828	2668	cmd.exe	Loaader.exe
PID 2668 wrote to memory of 2828	2668	cmd.exe	Loaader.exe
PID 2668 wrote to memory of 2828	2668	cmd.exe	Loaader.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⤵
- Suspicious use of WriteProcessMemory
PID:2180

C:\Users\Admin\AppData\Local\Temp\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2084

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:2988

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:2540

C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpDD54.tmp.bat""
3⤵
- Suspicious use of WriteProcessMemory
PID:2568

C:\Windows\system32\timeout.exe
timeout 3
4⤵
- Delays execution with timeout.exe
PID:2752

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:2492

C:\Users\Admin\AppData\Local\Temp\Infected.exe
"C:\Users\Admin\AppData\Local\Temp\Infected.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1332

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:2744

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:2288

C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpDA96.tmp.bat""
3⤵
- Suspicious use of WriteProcessMemory
PID:2668

C:\Windows\system32\timeout.exe
timeout 3
4⤵
- Delays execution with timeout.exe
PID:3004

C:\Users\Admin\AppData\Roaming\Loaader.exe
"C:\Users\Admin\AppData\Roaming\Loaader.exe"
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2828

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:2948

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Query Registry

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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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\tmpDA96.tmp.bat
Filesize
151B

MD5
36fdc2977abe82cdb6acbfb28ed351f6

SHA1
b93278f58bf19822b9c64c2b30d6e31aed6e0f58

SHA256
b38b100f0e6624a515013e121e47a7282ff2897685337437389120d889e7c817

SHA512
f637e759a52caf9d1bdaff7d8c7dc95f2594f16ae499dd10206f6a6da378e013e2a024cbf78cd679a53b1b7719e46b5ad01d47288535f7c10b2eff18da96f693

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDD54.tmp.bat
Filesize
150B

MD5
17b66e734c7e4832382fc740ae650aa6

SHA1
71049d85d29145346c2b1cb792ee84951d5f54ed

SHA256
0129c8c781f41446d4271e801c6018298c33f76702037835e486a07e435b3483

SHA512
bd939b6ad34fdd61d6c6fc95e6f78b682b548b5e04442a5d458f6538378c73442f3f64d377987f33e6b95078c24beb49e850ede57436b5883426ef13f8c71cc0

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
2KB

MD5
882fddf64ca46f8e9bd8f69a85037c14

SHA1
42054076dc71ba26812bc3e1d378bda72499bc50

SHA256
7558b90ee2f2c698fb9ea0f7d6570596a456e4a3158e955a8ba976a9bd342c37

SHA512
151e38e0a557bfc2ae8b968bbc56f95a0dbf566c0cdb702997f07eace90e17ef28e38a5b935250be28135cce9e2b790956f5c96c24003d5fc28824ecd4179e76

Download Submit
C:\Users\Public\SSSS.log
Filesize
2KB

MD5
efd26d9824e9f84f889419a3c31ddcd0

SHA1
0a913bbda233a73498ef13a6d92868b1a43df1a9

SHA256
2ca3eb27dd822df82be15f25ad13ecbf3e5c8b629dcb2d871175cae9f4b097da

SHA512
9e456e83222df653a41681568aea2e56ac7021f1af21ab3562580ac3c766351b72c575cbdb2e6753d6a3a9361657c8ae35ed9e9cb6b37b1a1c81774bc9b2de53

Download Submit
C:\Users\Public\SSSS.log
Filesize
2KB

MD5
f5d07ec02f1f32d8e5bfcd0c4eaeff9f

SHA1
5f50b2485249e528e38e4015748b9661a72f30b6

SHA256
bc53ab351c817708eb1ca0a729bf4286c0d1a5aea4964353671f4ac5ecce64be

SHA512
a16932fdb3313e97c8a8981b51c7b030d2a51a95f2565c8d19d8f92946854a21c8bd72f94056331b458a9eabb67f5d2d67d08883002783601d9cd2fc5d7931a6

Download Submit
C:\Users\Public\SSSS.log
Filesize
2KB

MD5
207998a89098d6eed78e5f5d97bbdcce

SHA1
fa9623de697b5285895213ea76a83a824cb0a051

SHA256
2bf842ee6ed07b14fbf5f1f1cbf0b61e17ee3fcb40c0fb292f930c330f8aa05a

SHA512
f10f3fb90e62006636e70e86c579edea2c7fb52d0ba97babdb3e7b58b1522e0a554bc275e81a3e7e85485e1c01c836929b5be95d3880e507d060925c6fcb2593

Download Submit
C:\Users\Public\SSSS.log
Filesize
3KB

MD5
25a6e0252eb5166350fe4264aeb72aa7

SHA1
0721d914aee30aefe33781277dbefdeee20aabaa

SHA256
b08e881f0223afc691501e26aa56ffffb6031912791cf532597de7896fc9acf9

SHA512
f432564a221313d6a10d2de68447d2a5079c3663edb10f9b5aee0fdfff02c6efdcb5daafc1f233a52012361e27be3f2495b4be8984e9e0f0c7e9ebbad530b72d

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

MD5
672eabdc48b8764e8193cb1f49cbd006

SHA1
3dc8ad16bc943c86bae8758b2cbaddcd835f4e97

SHA256
b3074bc273c78daa76f7a256197a82f05bdd28cf35b3a64c56f7d0e806319145

SHA512
e9096922c18af0a0fba3fa1fd5a46974f23e79959de196136255119eb1a4352c4361dc50960d614d21a0ab5b392bf11055ed7bee3bb6f92a9712e14a009f853d

Download Submit
\??\PIPE\lsarpc
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
memory/1332-16-0x0000000000290000-0x00000000002A6000-memory.dmp

Filesize
88KB

Download
memory/2084-7-0x00000000001B0000-0x00000000001C8000-memory.dmp

Filesize
96KB

Download
memory/2084-10-0x000007FEF5350000-0x000007FEF5D3C000-memory.dmp

Filesize
9.9MB

Download
memory/2084-45-0x000007FEF5350000-0x000007FEF5D3C000-memory.dmp

Filesize
9.9MB

Download
memory/2084-24-0x000007FEF5350000-0x000007FEF5D3C000-memory.dmp

Filesize
9.9MB

Download
memory/2180-0-0x000007FEF5353000-0x000007FEF5354000-memory.dmp

Filesize
4KB

Download
memory/2180-1-0x0000000001120000-0x0000000001160000-memory.dmp

Filesize
256KB

Download
memory/2180-8-0x000007FEF5350000-0x000007FEF5D3C000-memory.dmp

Filesize
9.9MB

Download
memory/2180-23-0x000007FEF5350000-0x000007FEF5D3C000-memory.dmp

Filesize
9.9MB

Download
memory/2492-53-0x0000000001080000-0x0000000001098000-memory.dmp

Filesize
96KB

Download
memory/2828-52-0x0000000000D60000-0x0000000000D76000-memory.dmp

Filesize
88KB

Download
memory/2948-26-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2948-25-0x0000000000F40000-0x0000000000F5E000-memory.dmp

Filesize
120KB

Download