asyncrat | e709b46999c2c10f2b7c29de74d47ba866dbe3e119305a6a74b607a64c4a3ac6

General

Target

Server.exe
Size

175KB
MD5

93f59dfbc510724cd813a4932c940288
SHA1

b36c6fdedcde70cbbbc8ac1d2c525f6720a71695
SHA256

e709b46999c2c10f2b7c29de74d47ba866dbe3e119305a6a74b607a64c4a3ac6
SHA512

393abe5312933948a7be05ca88f9e370862753a94a01478b6c8b57d1f4b031097b3a41dfdb43578526491d3b9ee8bfac6ff1c20bc989fed61294361adf177bc9
SSDEEP

3072:xe8oX8Sb5KcXrtkkXmf/bDsvqtU+lLToChAP4UZ0b2gT+wAqE+Wpor:kXtb5KcXr7XmfgqtjhANZ0b2j

Score

10^/10

asyncrat stormkitty default persistence privilege_escalation rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

https://api.telegram.org/bot6950741702:AAF78ePT60gAVVIZ2a5FAUMt-KJuetn8Rcg/sendMessage?chat_id=1914235059

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
StormKitty
StormKitty is an open source info stealer written in C#.
stealer stormkitty

StormKitty payload 1 IoCs

resource	yara_rule
behavioral1/memory/4892-1-0x00000000008F0000-0x0000000000922000-memory.dmp	family_stormkitty

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Drops desktop.ini file(s) 9 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\e95e14612d7af1c79a2f62cacf4f4e81\Admin@NDTNZVHN_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	Server.exe
File created	C:\Users\Admin\AppData\Local\e95e14612d7af1c79a2f62cacf4f4e81\Admin@NDTNZVHN_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	Server.exe
File opened for modification	C:\Users\Admin\AppData\Local\e95e14612d7af1c79a2f62cacf4f4e81\Admin@NDTNZVHN_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	Server.exe
File created	C:\Users\Admin\AppData\Local\e95e14612d7af1c79a2f62cacf4f4e81\Admin@NDTNZVHN_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	Server.exe
File opened for modification	C:\Users\Admin\AppData\Local\e95e14612d7af1c79a2f62cacf4f4e81\Admin@NDTNZVHN_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	Server.exe
File created	C:\Users\Admin\AppData\Local\e95e14612d7af1c79a2f62cacf4f4e81\Admin@NDTNZVHN_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	Server.exe
File created	C:\Users\Admin\AppData\Local\e95e14612d7af1c79a2f62cacf4f4e81\Admin@NDTNZVHN_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	Server.exe
File created	C:\Users\Admin\AppData\Local\e95e14612d7af1c79a2f62cacf4f4e81\Admin@NDTNZVHN_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	Server.exe
File created	C:\Users\Admin\AppData\Local\e95e14612d7af1c79a2f62cacf4f4e81\Admin@NDTNZVHN_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	Server.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
1	icanhazip.com

Looks up geolocation information via web service
Uses a legitimate geolocation service to find the infected system's geolocation info.

Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	Server.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Server.exe

Suspicious behavior: EnumeratesProcesses 17 IoCs

pid	Process
4892	Server.exe
4892	Server.exe
4892	Server.exe
4892	Server.exe
4892	Server.exe
4892	Server.exe
4892	Server.exe
4892	Server.exe
4892	Server.exe
4892	Server.exe
4892	Server.exe
4892	Server.exe
4892	Server.exe
4892	Server.exe
4892	Server.exe
4892	Server.exe
4892	Server.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4892	Server.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4892 wrote to memory of 1372	4892	Server.exe	74
PID 4892 wrote to memory of 1372	4892	Server.exe	74
PID 4892 wrote to memory of 1372	4892	Server.exe	74
PID 1372 wrote to memory of 5040	1372	cmd.exe	76
PID 1372 wrote to memory of 5040	1372	cmd.exe	76
PID 1372 wrote to memory of 5040	1372	cmd.exe	76
PID 1372 wrote to memory of 3900	1372	cmd.exe	77
PID 1372 wrote to memory of 3900	1372	cmd.exe	77
PID 1372 wrote to memory of 3900	1372	cmd.exe	77
PID 1372 wrote to memory of 4808	1372	cmd.exe	78
PID 1372 wrote to memory of 4808	1372	cmd.exe	78
PID 1372 wrote to memory of 4808	1372	cmd.exe	78
PID 4892 wrote to memory of 596	4892	Server.exe	79
PID 4892 wrote to memory of 596	4892	Server.exe	79
PID 4892 wrote to memory of 596	4892	Server.exe	79
PID 596 wrote to memory of 2728	596	cmd.exe	81
PID 596 wrote to memory of 2728	596	cmd.exe	81
PID 596 wrote to memory of 2728	596	cmd.exe	81
PID 596 wrote to memory of 4880	596	cmd.exe	82
PID 596 wrote to memory of 4880	596	cmd.exe	82
PID 596 wrote to memory of 4880	596	cmd.exe	82

C:\Users\Admin\AppData\Local\Temp\Server.exe
"C:\Users\Admin\AppData\Local\Temp\Server.exe"
1⤵
- Drops desktop.ini file(s)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4892
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1372
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:5040
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show profile
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    PID:3900
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    PID:4808
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:596
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:2728
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    PID:4880

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\9699b2808e6b167b717d8d17073267b0\msgid.dat

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Local\e95e14612d7af1c79a2f62cacf4f4e81\Admin@NDTNZVHN_en-US\System\Process.txt

Filesize
4KB

MD5
78710e523aa201363ee61c6054104238

SHA1
58723de39d6e4c13051bada5615a3ed9cc3bd529

SHA256
25c2b9247b04107bac900e0ca7ce1ec7aaa138994b2b633231b0ac22e0c90f3a

SHA512
c244b6d29fb03163c0e05e572a8c9fc1f7a8c4b2f05a34bfb5fefa2dd629f8a90fabc35f4508411a7e5b146cc17da29f5d6dba8f592fdc19cd25b932a862ca63

Download Submit
memory/4892-3-0x0000000005180000-0x00000000051E6000-memory.dmp

Filesize
408KB

Download
memory/4892-0-0x000000007339E000-0x000000007339F000-memory.dmp

Filesize
4KB

Download
memory/4892-2-0x0000000073390000-0x0000000073A7E000-memory.dmp

Filesize
6.9MB

Download
memory/4892-119-0x0000000073390000-0x0000000073A7E000-memory.dmp

Filesize
6.9MB

Download
memory/4892-120-0x0000000005C50000-0x0000000005CE2000-memory.dmp

Filesize
584KB

Download
memory/4892-121-0x00000000061F0000-0x00000000066EE000-memory.dmp

Filesize
5.0MB

Download
memory/4892-125-0x0000000005F70000-0x0000000005F7A000-memory.dmp

Filesize
40KB

Download
memory/4892-1-0x00000000008F0000-0x0000000000922000-memory.dmp

Filesize
200KB

Download
memory/4892-131-0x0000000006AF0000-0x0000000006B02000-memory.dmp

Filesize
72KB

Download
memory/4892-155-0x000000007339E000-0x000000007339F000-memory.dmp

Filesize
4KB

Download
memory/4892-156-0x0000000073390000-0x0000000073A7E000-memory.dmp

Filesize
6.9MB

Download
memory/4892-157-0x0000000073390000-0x0000000073A7E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads