asyncrat | 9b5b73e916f04101f6bb33a5f1064e54bbaa04c1cf8efe9a40b7bf5deb18da6e

General

Target

ngrok.exe
Size

74KB
MD5

7f79bdf9fe741fe446c056005a52fd8a
SHA1

dc7f0987c8e34303555682f3827537c70a0963e0
SHA256

9b5b73e916f04101f6bb33a5f1064e54bbaa04c1cf8efe9a40b7bf5deb18da6e
SHA512

dbcc16a8bc70e22f7073e7bd10b137eb7eb4430bbec6687c45d8e8cf203d35e23d8c554d9ef9f5e59613320b4fe5a312b37cb98a7a3686a18a7a93ff053888e3
SSDEEP

1536:QRU98cxpeaC/zPMV9fxraL2UIeH1bzKNm0Qzc7qVclN:mU+cxp7AzPMVz1kH1bz6Qu4Y

Score

10^/10

asyncrat driver rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Driver

C2

13.229.3.203:19322

Mutex

locsuccac

Attributes

delay
1
install
true
install_file
ngrok.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/2112-1-0x0000000000DB0000-0x0000000000DC8000-memory.dmp	VenomRAT
C:\Users\Admin\AppData\Roaming\ngrok.exe	VenomRAT
behavioral1/memory/2900-18-0x0000000000340000-0x0000000000358000-memory.dmp	VenomRAT

Async RAT payload 1 IoCs

rat

Processes:

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

Executes dropped EXE 1 IoCs

Processes:

ngrok.exe

pid process

2900 ngrok.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

2768 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

2764 schtasks.exe

pid	process
2900	ngrok.exe

pid	process
2768	timeout.exe

pid	process
2764	schtasks.exe

Suspicious behavior: EnumeratesProcesses 33 IoCs

Processes:

ngrok.exengrok.exe

pid	process
2112	ngrok.exe
2112	ngrok.exe
2112	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe
2900	ngrok.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

ngrok.exengrok.exe

description	pid	process
Token: SeDebugPrivilege	2112	ngrok.exe
Token: SeDebugPrivilege	2112	ngrok.exe
Token: SeDebugPrivilege	2900	ngrok.exe
Token: SeDebugPrivilege	2900	ngrok.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

ngrok.exe

pid process

2900 ngrok.exe

pid	process
2900	ngrok.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

ngrok.execmd.execmd.exe

description	pid	process	target process
PID 2112 wrote to memory of 2520	2112	ngrok.exe	cmd.exe
PID 2112 wrote to memory of 2520	2112	ngrok.exe	cmd.exe
PID 2112 wrote to memory of 2520	2112	ngrok.exe	cmd.exe
PID 2112 wrote to memory of 2940	2112	ngrok.exe	cmd.exe
PID 2112 wrote to memory of 2940	2112	ngrok.exe	cmd.exe
PID 2112 wrote to memory of 2940	2112	ngrok.exe	cmd.exe
PID 2520 wrote to memory of 2764	2520	cmd.exe	schtasks.exe
PID 2520 wrote to memory of 2764	2520	cmd.exe	schtasks.exe
PID 2520 wrote to memory of 2764	2520	cmd.exe	schtasks.exe
PID 2940 wrote to memory of 2768	2940	cmd.exe	timeout.exe
PID 2940 wrote to memory of 2768	2940	cmd.exe	timeout.exe
PID 2940 wrote to memory of 2768	2940	cmd.exe	timeout.exe
PID 2940 wrote to memory of 2900	2940	cmd.exe	ngrok.exe
PID 2940 wrote to memory of 2900	2940	cmd.exe	ngrok.exe
PID 2940 wrote to memory of 2900	2940	cmd.exe	ngrok.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\ngrok.exe
"C:\Users\Admin\AppData\Local\Temp\ngrok.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "ngrok" /tr '"C:\Users\Admin\AppData\Roaming\ngrok.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2520
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "ngrok" /tr '"C:\Users\Admin\AppData\Roaming\ngrok.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2764
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpCC83.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2940
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2768
- - C:\Users\Admin\AppData\Roaming\ngrok.exe
    "C:\Users\Admin\AppData\Roaming\ngrok.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpCC83.tmp.bat

Filesize
149B

MD5
837831826315ab9b2ca426195f7d0fb3

SHA1
7419f128cb509ce1fc794fdb6a030b2a3b831504

SHA256
e3c157ebdbce1c69f3c504e5336fdc9051632793e6f19cc90f2b2146866a33da

SHA512
89c86ec22b71cd6a309bfbeb038c1cf3c21710e27a57168d219ceabac104bbe091ceddfa2edc8c8829ce6472c1548a437d891288c093f3da4be7478d5350b918

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

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
C:\Users\Admin\AppData\Roaming\ngrok.exe

Filesize
74KB

MD5
7f79bdf9fe741fe446c056005a52fd8a

SHA1
dc7f0987c8e34303555682f3827537c70a0963e0

SHA256
9b5b73e916f04101f6bb33a5f1064e54bbaa04c1cf8efe9a40b7bf5deb18da6e

SHA512
dbcc16a8bc70e22f7073e7bd10b137eb7eb4430bbec6687c45d8e8cf203d35e23d8c554d9ef9f5e59613320b4fe5a312b37cb98a7a3686a18a7a93ff053888e3

Download Submit
memory/2112-0-0x000007FEF5903000-0x000007FEF5904000-memory.dmp

Filesize
4KB

Download
memory/2112-1-0x0000000000DB0000-0x0000000000DC8000-memory.dmp

Filesize
96KB

Download
memory/2112-3-0x000007FEF5900000-0x000007FEF62EC000-memory.dmp

Filesize
9.9MB

Download
memory/2112-12-0x000007FEF5900000-0x000007FEF62EC000-memory.dmp

Filesize
9.9MB

Download
memory/2112-13-0x000007FEF5900000-0x000007FEF62EC000-memory.dmp

Filesize
9.9MB

Download
memory/2900-18-0x0000000000340000-0x0000000000358000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads