asyncrat | 30e2726dee5186ddf54a1c5309aaa9b75d2710c39cc9a5e8500d73bec37149b7

Analysis

max time kernel
150s
max time network
132s
platform
windows10-2004_x64
resource
win10v2004-20230621-en
resource tags

arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
submitted
29/06/2023, 07:22

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General

Target
974da4d2df31e10572d18a321540443a.exe
Size 170KB
Sample230629-h683gsdb9x
SHA256 30e2726dee5186ddf54a1c5309aaa9b75d2710c39cc9a5e8500d73bec37149b7
MD5 974da4d2df31e10572d18a321540443a
SHA1 c7e42eb35cd129d820555842ed9d92636f75d8df
SHA512 349a4b85f1c19a2050db80dc2aa793a87364229d0315ff1351c1338b913121d9ed89a8d3cbd28c47125b782abd7a4eb4387331b3ff65136a71754fd0c73f8488
SSDEEP 3072:S+STW8djpN6izj8mZwP900qo2HD9avlCIPu/i9bSJ2cQQNe6+WpP:P8XN6W8mmP9kHDYd/PSi9b6f
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

asyncrat stormkitty default rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Botnet

Default

127.0.0.1:6606
127.0.0.1:7707
127.0.0.1:8808
https://api.telegram.org/bot6154715708:AAEr8vPeSHcSYTb0A4o52iLBY8gZOLx4sOQ/sendMessage?chat_id=1165040754

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/3444-133-0x0000000000830000-0x0000000000860000-memory.dmp	family_stormkitty

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/3444-133-0x0000000000830000-0x0000000000860000-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
T1081

Drops desktop.ini file(s) 7 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\62029bd6890eea5a8cc0c06a83db9ae0\Admin@FNCPTJBF_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	974da4d2df31e10572d18a321540443a.exe
File created	C:\Users\Admin\AppData\Local\62029bd6890eea5a8cc0c06a83db9ae0\Admin@FNCPTJBF_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	974da4d2df31e10572d18a321540443a.exe
File created	C:\Users\Admin\AppData\Local\62029bd6890eea5a8cc0c06a83db9ae0\Admin@FNCPTJBF_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	974da4d2df31e10572d18a321540443a.exe
File created	C:\Users\Admin\AppData\Local\62029bd6890eea5a8cc0c06a83db9ae0\Admin@FNCPTJBF_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	974da4d2df31e10572d18a321540443a.exe
File opened for modification	C:\Users\Admin\AppData\Local\62029bd6890eea5a8cc0c06a83db9ae0\Admin@FNCPTJBF_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	974da4d2df31e10572d18a321540443a.exe
File created	C:\Users\Admin\AppData\Local\62029bd6890eea5a8cc0c06a83db9ae0\Admin@FNCPTJBF_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	974da4d2df31e10572d18a321540443a.exe
File created	C:\Users\Admin\AppData\Local\62029bd6890eea5a8cc0c06a83db9ae0\Admin@FNCPTJBF_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	974da4d2df31e10572d18a321540443a.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
36	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	974da4d2df31e10572d18a321540443a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	974da4d2df31e10572d18a321540443a.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe
3444	974da4d2df31e10572d18a321540443a.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3444	974da4d2df31e10572d18a321540443a.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3444 wrote to memory of 3984	3444	974da4d2df31e10572d18a321540443a.exe	90
PID 3444 wrote to memory of 3984	3444	974da4d2df31e10572d18a321540443a.exe	90
PID 3444 wrote to memory of 3984	3444	974da4d2df31e10572d18a321540443a.exe	90
PID 3984 wrote to memory of 4228	3984	cmd.exe	92
PID 3984 wrote to memory of 4228	3984	cmd.exe	92
PID 3984 wrote to memory of 4228	3984	cmd.exe	92
PID 3984 wrote to memory of 4248	3984	cmd.exe	93
PID 3984 wrote to memory of 4248	3984	cmd.exe	93
PID 3984 wrote to memory of 4248	3984	cmd.exe	93
PID 3984 wrote to memory of 4292	3984	cmd.exe	94
PID 3984 wrote to memory of 4292	3984	cmd.exe	94
PID 3984 wrote to memory of 4292	3984	cmd.exe	94
PID 3444 wrote to memory of 5108	3444	974da4d2df31e10572d18a321540443a.exe	95
PID 3444 wrote to memory of 5108	3444	974da4d2df31e10572d18a321540443a.exe	95
PID 3444 wrote to memory of 5108	3444	974da4d2df31e10572d18a321540443a.exe	95
PID 5108 wrote to memory of 2548	5108	cmd.exe	97
PID 5108 wrote to memory of 2548	5108	cmd.exe	97
PID 5108 wrote to memory of 2548	5108	cmd.exe	97
PID 5108 wrote to memory of 2160	5108	cmd.exe	98
PID 5108 wrote to memory of 2160	5108	cmd.exe	98
PID 5108 wrote to memory of 2160	5108	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\974da4d2df31e10572d18a321540443a.exe
"C:\Users\Admin\AppData\Local\Temp\974da4d2df31e10572d18a321540443a.exe"
1⤵
- Drops desktop.ini file(s)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3444
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3984
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:4228
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show profile
    3⤵
    PID:4248
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    PID:4292
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5108
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:2548
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    PID:2160

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

Bookmarks.txt

Path C:\Users\Admin\AppData\Local\62029bd6890eea5a8cc0c06a83db9ae0\Admin@FNCPTJBF_en-US\Browsers\Firefox\Bookmarks.txt
Size 105B
SHA256 c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142
MD5 2e9d094dda5cdc3ce6519f75943a4ff4
SHA1 5d989b4ac8b699781681fe75ed9ef98191a5096c
SHA512 d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7
MD5 SHA1 SHA512

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Process.txt

Path C:\Users\Admin\AppData\Local\62029bd6890eea5a8cc0c06a83db9ae0\Admin@FNCPTJBF_en-US\System\Process.txt
Size 4KB
SHA256 f791fc0dc5563d9ea9352c6d69286ebac1220a2034019958339b26f71694fe60
MD5 63efa859f97ae12a81f51aef5f47d695
SHA1 d3d5d6ba1f2da567ff83e81d02ca315deda8a303
SHA512 162169f5a3277effce15cd76d213044efd66c863ce388d59ff20ae72d7f63adaa2595e4fe7c75128af289c2eab90c7b8882756e8ae56367db59b88f9b330c98a
SSDEEP 48:u51Xct6tvD23A5Bur5iF1+ntqHf+Tbcd7b1utD+s2y/xE:u5tctWD23A5Bu5iF1+ncHf+Tw9BGasBE
MD5 SHA1 SHA512 SSDEEP

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msgid.dat

Path C:\Users\Admin\AppData\Local\7bd7b2af3a1e942db80384a5411105bf\msgid.dat
Size 4B
SHA256 64251bd579343ef10d7cae5019c0f12d61b7649fed47fc044962dbba61ce331d
MD5 6ebb69ffbebe9fd95d160ffc29e0fe5d
SHA1 342b2058b41ef2785b37e2b7590eb8625fd57715
SHA512 155f8217dd6b2de3f647902e413654f6135c6a9a484dbc777c7d6aa21153d8b6fbbc530cc1be3336c2921c1af28e6aeb1bf0382126da15bacb6278960602aaae
MD5 SHA1 SHA512

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memory/3444-278-0x0000000005190000-0x00000000051A0000-memory.dmp

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memory/3444-202-0x0000000005190000-0x00000000051A0000-memory.dmp

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memory/3444-135-0x00000000051A0000-0x0000000005206000-memory.dmp

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memory/3444-133-0x0000000000830000-0x0000000000860000-memory.dmp

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memory/3444-279-0x0000000005FE0000-0x0000000006072000-memory.dmp

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memory/3444-280-0x0000000006630000-0x0000000006BD4000-memory.dmp

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memory/3444-284-0x0000000006220000-0x000000000622A000-memory.dmp

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memory/3444-134-0x0000000005190000-0x00000000051A0000-memory.dmp

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memory/3444-290-0x0000000006EC0000-0x0000000006ED2000-memory.dmp

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memory/3444-314-0x0000000005190000-0x00000000051A0000-memory.dmp

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