asyncrat | a3e5674bf7c3e285fb88bb0bfc284f3e74ece2706f46168c6da289e6267b96d7

General

Target

JC_tmp.exe
Size

175KB
MD5

9f322fea404a9934e6c807108ebb2147
SHA1

668174980eb20c9ce530b51e059714bc55a80d25
SHA256

a3e5674bf7c3e285fb88bb0bfc284f3e74ece2706f46168c6da289e6267b96d7
SHA512

2a5c3e87b7199f8b48cc0e8528e5d54052b7d8c596465666b13c4d348413931edf6985bbf3a72dcabdbb88363b4c073958081e534a79fb430ae2c3ddb4dbeb8d
SSDEEP

3072:se8oX8Sb5KcXrtkkXmf/bDsvqtU+lLToChAP0UZ0b2gTewAqE+Wpor:FXtb5KcXr7XmfgqtjhAxZ0b2H

Score

10^/10

asyncrat stormkitty default 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/bot6665962723:AAH0nnWqTYyuuRfHTzEtqpxN1oFN6NDMxRY/sendMessage?chat_id=1595024827

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
behavioral2/memory/644-0-0x0000000000A40000-0x0000000000A72000-memory.dmp	family_stormkitty

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/644-0-0x0000000000A40000-0x0000000000A72000-memory.dmp	asyncrat

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) 10 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\80b7151ef9385a8ed4e980c60948bbfd\Admin@MDUTPCWA_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	JC_tmp.exe
File created	C:\Users\Admin\AppData\Local\80b7151ef9385a8ed4e980c60948bbfd\Admin@MDUTPCWA_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	JC_tmp.exe
File opened for modification	C:\Users\Admin\AppData\Local\80b7151ef9385a8ed4e980c60948bbfd\Admin@MDUTPCWA_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	JC_tmp.exe
File opened for modification	C:\Users\Admin\AppData\Local\80b7151ef9385a8ed4e980c60948bbfd\Admin@MDUTPCWA_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	JC_tmp.exe
File created	C:\Users\Admin\AppData\Local\80b7151ef9385a8ed4e980c60948bbfd\Admin@MDUTPCWA_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	JC_tmp.exe
File created	C:\Users\Admin\AppData\Local\80b7151ef9385a8ed4e980c60948bbfd\Admin@MDUTPCWA_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	JC_tmp.exe
File created	C:\Users\Admin\AppData\Local\80b7151ef9385a8ed4e980c60948bbfd\Admin@MDUTPCWA_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	JC_tmp.exe
File opened for modification	C:\Users\Admin\AppData\Local\80b7151ef9385a8ed4e980c60948bbfd\Admin@MDUTPCWA_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	JC_tmp.exe
File created	C:\Users\Admin\AppData\Local\80b7151ef9385a8ed4e980c60948bbfd\Admin@MDUTPCWA_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	JC_tmp.exe
File created	C:\Users\Admin\AppData\Local\80b7151ef9385a8ed4e980c60948bbfd\Admin@MDUTPCWA_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	JC_tmp.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
47	icanhazip.com

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

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	JC_tmp.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	JC_tmp.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe
644	JC_tmp.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	644	JC_tmp.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 644 wrote to memory of 216	644	JC_tmp.exe	96
PID 644 wrote to memory of 216	644	JC_tmp.exe	96
PID 644 wrote to memory of 216	644	JC_tmp.exe	96
PID 216 wrote to memory of 4260	216	cmd.exe	98
PID 216 wrote to memory of 4260	216	cmd.exe	98
PID 216 wrote to memory of 4260	216	cmd.exe	98
PID 216 wrote to memory of 5072	216	cmd.exe	99
PID 216 wrote to memory of 5072	216	cmd.exe	99
PID 216 wrote to memory of 5072	216	cmd.exe	99
PID 216 wrote to memory of 3932	216	cmd.exe	100
PID 216 wrote to memory of 3932	216	cmd.exe	100
PID 216 wrote to memory of 3932	216	cmd.exe	100
PID 644 wrote to memory of 4876	644	JC_tmp.exe	103
PID 644 wrote to memory of 4876	644	JC_tmp.exe	103
PID 644 wrote to memory of 4876	644	JC_tmp.exe	103
PID 4876 wrote to memory of 1104	4876	cmd.exe	105
PID 4876 wrote to memory of 1104	4876	cmd.exe	105
PID 4876 wrote to memory of 1104	4876	cmd.exe	105
PID 4876 wrote to memory of 560	4876	cmd.exe	106
PID 4876 wrote to memory of 560	4876	cmd.exe	106
PID 4876 wrote to memory of 560	4876	cmd.exe	106

C:\Users\Admin\AppData\Local\Temp\JC_tmp.exe
"C:\Users\Admin\AppData\Local\Temp\JC_tmp.exe"
1⤵
- Drops desktop.ini file(s)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:644
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:216
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:4260
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show profile
    3⤵
    PID:5072
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    PID:3932
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4876
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:1104
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    PID:560

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\784a124155181d24a9160e9054f5847d\msgid.dat

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Local\80b7151ef9385a8ed4e980c60948bbfd\Admin@MDUTPCWA_en-US\System\Process.txt

Filesize
4KB

MD5
596861ded1c3fee788165d5ba2aedb2f

SHA1
ce43a11b375e4036d57b554072e84bba96efa0d4

SHA256
141e0fe6d17396338754c33aad33a4aecfbcf7580d264b3637c2e8ae27ae878b

SHA512
486be9e2d6d82fce2a1d846d1c299927c8b27cf00f2155a83283fd1e60c67b64abb76a507457cb0d17ca6e84b9cd7eec96f08342bc45abf4458ff0170b87b38f

Download Submit
memory/644-3-0x0000000005530000-0x0000000005596000-memory.dmp

Filesize
408KB

Download
memory/644-1-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/644-57-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/644-83-0x00000000053A0000-0x00000000053B0000-memory.dmp

Filesize
64KB

Download
memory/644-2-0x00000000053A0000-0x00000000053B0000-memory.dmp

Filesize
64KB

Download
memory/644-149-0x00000000053A0000-0x00000000053B0000-memory.dmp

Filesize
64KB

Download
memory/644-151-0x0000000006390000-0x0000000006422000-memory.dmp

Filesize
584KB

Download
memory/644-152-0x00000000069E0000-0x0000000006F84000-memory.dmp

Filesize
5.6MB

Download
memory/644-156-0x00000000064B0000-0x00000000064BA000-memory.dmp

Filesize
40KB

Download
memory/644-157-0x00000000053A0000-0x00000000053B0000-memory.dmp

Filesize
64KB

Download
memory/644-0-0x0000000000A40000-0x0000000000A72000-memory.dmp

Filesize
200KB

Download
memory/644-163-0x0000000006500000-0x0000000006512000-memory.dmp

Filesize
72KB

Download

Analysis

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