asyncrat | 5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311

General

Target

runtime.exe
Size

73KB
MD5

4fa7b1eec1fc84eb3a13c29e5a37aae7
SHA1

dfff9fceeb4d74d7e82f9f0a65d1889fa0f9e326
SHA256

5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311
SHA512

5e36a5589499a3db56d78de1b66a9ee57a2972bc57bf4b915df9118fd2a584c74ba00c61531d922431b72e87f9c53585c4c1a78a2aba122a22ea5e3603aa06ba
SSDEEP

1536:KIUme0cxdlOH4PAI7Bn3h36rAi8EjZUPMwC/eqmmRhdWVH1bfbfPmjmwzUYbVclN:KIUm3cxdlOH4YI7Bn3h36rAi8EVUPMwv

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.2

Botnet

Default

C2

72.5.43.15:4449

Mutex

yezcydjwbxouz

Attributes

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

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\win.exe	family_asyncrat

Executes dropped EXE 1 IoCs

Processes:

win.exe

pid process

2572 win.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2724 timeout.exe
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence execution

Scheduled Task
T1053.005

Processes:

schtasks.exe

pid process

2720 schtasks.exe
Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

runtime.exewin.exe

pid process

1684 runtime.exe
1684 runtime.exe
2572 win.exe
2572 win.exe
2572 win.exe
2572 win.exe
2572 win.exe
2572 win.exe
2572 win.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

runtime.exewin.exe

description pid process

Token: SeDebugPrivilege 1684 runtime.exe
Token: SeDebugPrivilege 2572 win.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

win.exe

pid process

2572 win.exe

pid	process
2572	win.exe

pid	process
2724	timeout.exe

pid	process
2720	schtasks.exe

pid	process
1684	runtime.exe
1684	runtime.exe
2572	win.exe
2572	win.exe
2572	win.exe
2572	win.exe
2572	win.exe
2572	win.exe
2572	win.exe

description	pid	process
Token: SeDebugPrivilege	1684	runtime.exe
Token: SeDebugPrivilege	2572	win.exe

pid	process
2572	win.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

runtime.execmd.execmd.exe

description	pid	process	target process
PID 1684 wrote to memory of 2160	1684	runtime.exe	cmd.exe
PID 1684 wrote to memory of 2160	1684	runtime.exe	cmd.exe
PID 1684 wrote to memory of 2160	1684	runtime.exe	cmd.exe
PID 1684 wrote to memory of 2764	1684	runtime.exe	cmd.exe
PID 1684 wrote to memory of 2764	1684	runtime.exe	cmd.exe
PID 1684 wrote to memory of 2764	1684	runtime.exe	cmd.exe
PID 2160 wrote to memory of 2720	2160	cmd.exe	schtasks.exe
PID 2160 wrote to memory of 2720	2160	cmd.exe	schtasks.exe
PID 2160 wrote to memory of 2720	2160	cmd.exe	schtasks.exe
PID 2764 wrote to memory of 2724	2764	cmd.exe	timeout.exe
PID 2764 wrote to memory of 2724	2764	cmd.exe	timeout.exe
PID 2764 wrote to memory of 2724	2764	cmd.exe	timeout.exe
PID 2764 wrote to memory of 2572	2764	cmd.exe	win.exe
PID 2764 wrote to memory of 2572	2764	cmd.exe	win.exe
PID 2764 wrote to memory of 2572	2764	cmd.exe	win.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\runtime.exe
"C:\Users\Admin\AppData\Local\Temp\runtime.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1684

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "win" /tr '"C:\Users\Admin\AppData\Roaming\win.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:2160

C:\Windows\system32\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "win" /tr '"C:\Users\Admin\AppData\Roaming\win.exe"'
3⤵
- Scheduled Task/Job: Scheduled Task
PID:2720

C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp2481.tmp.bat""
2⤵
- Suspicious use of WriteProcessMemory
PID:2764

C:\Windows\system32\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:2724

C:\Users\Admin\AppData\Roaming\win.exe
"C:\Users\Admin\AppData\Roaming\win.exe"
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2572

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp2481.tmp.bat
Filesize
147B

MD5
c939459f78c380f7b09d855a002f3a2d

SHA1
8c1a6df42db1d151868484bf0e35d427d77eeeee

SHA256
321a507f9f074b551530b762e5c49ff18328f78638355c32fc5551a50261df30

SHA512
98db8566d01d177b0924523a6ee10d3bfde49a6bc1b5588ac70674c9889e7038f391a49cbd6ab9aae42122dc179aa2cad518d73934e20b871b3b99d404494889

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

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

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C:\Users\Admin\AppData\Roaming\win.exe
Filesize
73KB

MD5
4fa7b1eec1fc84eb3a13c29e5a37aae7

SHA1
dfff9fceeb4d74d7e82f9f0a65d1889fa0f9e326

SHA256
5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311

SHA512
5e36a5589499a3db56d78de1b66a9ee57a2972bc57bf4b915df9118fd2a584c74ba00c61531d922431b72e87f9c53585c4c1a78a2aba122a22ea5e3603aa06ba

Download Submit
memory/1684-0-0x000007FEF5FA3000-0x000007FEF5FA4000-memory.dmp

Filesize
4KB

Download
memory/1684-1-0x00000000003F0000-0x0000000000408000-memory.dmp

Filesize
96KB

Download
memory/1684-3-0x000007FEF5FA0000-0x000007FEF698C000-memory.dmp

Filesize
9.9MB

Download
memory/1684-12-0x000007FEF5FA0000-0x000007FEF698C000-memory.dmp

Filesize
9.9MB

Download
memory/1684-14-0x000007FEF5FA0000-0x000007FEF698C000-memory.dmp

Filesize
9.9MB

Download
memory/2572-18-0x0000000000D80000-0x0000000000D98000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads