asyncrat | 3a23f25fbb533df0fdc29eebe8f5f2434a5169683a74097a8a18d554e0d071fd

Analysis

max time kernel
150s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20230621-en
resource tags

arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
submitted
27/06/2023, 04:07

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General

Target
0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
Size 170KB
Sample230627-epmldada34
SHA256 3a23f25fbb533df0fdc29eebe8f5f2434a5169683a74097a8a18d554e0d071fd
MD5 0f78c7fdb9fec5fdefe9e8ffbb7a6072
SHA1 cc81836883173f30726e930b78bac99b7dc66236
SHA512 ced52756123d2800b6568e8b8b8b7b37c54edbee4a77ef1ef45e2d4927045fd5421fd8dab7d68bb8f7ed734506c0aa17757e0316ce1ed8e557d51e7091c2945f
SSDEEP 3072:G+STW8djpN6izj8mZw+GSv5hqIPu/i9bcJ2cCw41ex6+WpDz:b8XN6W8mm+vvnXPSi9b4ps
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:AAFpWkD6BbrOC_lU7uwoa4RYsi-Gz6vox7M/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/740-133-0x00000000001A0000-0x00000000001D0000-memory.dmp	family_stormkitty

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/740-133-0x00000000001A0000-0x00000000001D0000-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) 10 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\7bd7b2af3a1e942db80384a5411105bf\Admin@FNCPTJBF_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
File opened for modification	C:\Users\Admin\AppData\Local\7bd7b2af3a1e942db80384a5411105bf\Admin@FNCPTJBF_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
File opened for modification	C:\Users\Admin\AppData\Local\7bd7b2af3a1e942db80384a5411105bf\Admin@FNCPTJBF_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
File created	C:\Users\Admin\AppData\Local\7bd7b2af3a1e942db80384a5411105bf\Admin@FNCPTJBF_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
File created	C:\Users\Admin\AppData\Local\7bd7b2af3a1e942db80384a5411105bf\Admin@FNCPTJBF_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
File created	C:\Users\Admin\AppData\Local\7bd7b2af3a1e942db80384a5411105bf\Admin@FNCPTJBF_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
File opened for modification	C:\Users\Admin\AppData\Local\7bd7b2af3a1e942db80384a5411105bf\Admin@FNCPTJBF_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
File created	C:\Users\Admin\AppData\Local\7bd7b2af3a1e942db80384a5411105bf\Admin@FNCPTJBF_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
File created	C:\Users\Admin\AppData\Local\7bd7b2af3a1e942db80384a5411105bf\Admin@FNCPTJBF_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
File opened for modification	C:\Users\Admin\AppData\Local\7bd7b2af3a1e942db80384a5411105bf\Admin@FNCPTJBF_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	0f78c7fdb9fec5fdefe9e8ffbb7a6072.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
11	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 740 wrote to memory of 1268	740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe	82
PID 740 wrote to memory of 1268	740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe	82
PID 740 wrote to memory of 1268	740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe	82
PID 1268 wrote to memory of 2160	1268	cmd.exe	84
PID 1268 wrote to memory of 2160	1268	cmd.exe	84
PID 1268 wrote to memory of 2160	1268	cmd.exe	84
PID 1268 wrote to memory of 4888	1268	cmd.exe	85
PID 1268 wrote to memory of 4888	1268	cmd.exe	85
PID 1268 wrote to memory of 4888	1268	cmd.exe	85
PID 1268 wrote to memory of 3564	1268	cmd.exe	86
PID 1268 wrote to memory of 3564	1268	cmd.exe	86
PID 1268 wrote to memory of 3564	1268	cmd.exe	86
PID 740 wrote to memory of 1308	740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe	87
PID 740 wrote to memory of 1308	740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe	87
PID 740 wrote to memory of 1308	740	0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe	87
PID 1308 wrote to memory of 2868	1308	cmd.exe	89
PID 1308 wrote to memory of 2868	1308	cmd.exe	89
PID 1308 wrote to memory of 2868	1308	cmd.exe	89
PID 1308 wrote to memory of 4356	1308	cmd.exe	90
PID 1308 wrote to memory of 4356	1308	cmd.exe	90
PID 1308 wrote to memory of 4356	1308	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe
"C:\Users\Admin\AppData\Local\Temp\0f78c7fdb9fec5fdefe9e8ffbb7a6072.exe"
1⤵
- Drops desktop.ini file(s)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:740
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1268
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:2160
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show profile
    3⤵
    PID:4888
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    PID:3564
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1308
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:2868
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    PID:4356

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

msgid.dat

Path C:\Users\Admin\AppData\Local\3098e4bd59e1d2b6418f82e764d7f45a\msgid.dat
Size 4B
SHA256 5228bcba37539039758f484a7b5ba291c8c56a523a0949f7ec40f4cad46426d0
MD5 92ae5cfef57d9ef9a523753e45fc9b0b
SHA1 8b69f46dcd8c17b4fa15d2e8b756edf67434a5d9
SHA512 19b6cf0ebb7834f7b8f8aa2768d090a452f85b31e1101e0571299385fbf5629b870035e27f54c4b0658dad2e51cf84c6433154cbe207bdc7b0a70a311ff8eedd
MD5 SHA1 SHA512

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Bookmarks.txt

Path C:\Users\Admin\AppData\Local\7bd7b2af3a1e942db80384a5411105bf\Admin@FNCPTJBF_en-US\Browsers\Firefox\Bookmarks.txt
Size 105B
SHA256 c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142
MD5 2e9d094dda5cdc3ce6519f75943a4ff4
SHA1 5d989b4ac8b699781681fe75ed9ef98191a5096c
SHA512 d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7
MD5 SHA1 SHA512

Submit Download

Process.txt

Path C:\Users\Admin\AppData\Local\7bd7b2af3a1e942db80384a5411105bf\Admin@FNCPTJBF_en-US\System\Process.txt
Size 4KB
SHA256 733df3f9195d5397e5ea1c60b853eb544bdaff6d45807b66fa10984d2e1574c0
MD5 c34c77be8acc3d72d42ec356a25f0c2d
SHA1 2fd79bc3b0412e72186f20856842a64bda2ec3ba
SHA512 cf7e7ef695d01e278aeda2dc0544e3787c20a5f9a88b43f58cd49e0af88e0d47c95c6328f02eac86168d3675a7b28d35244d204c4b4c42c1cb94ea3cd852d5cb
SSDEEP 48:5HI6ZWXb2zbbfT97hSt8RaTOQb1u3Mo023wbcf:5hZWryb397hStpTOQBOMo023wwf
MD5 SHA1 SHA512 SSDEEP

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memory/740-272-0x0000000000D20000-0x0000000000D30000-memory.dmp

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memory/740-198-0x0000000000D20000-0x0000000000D30000-memory.dmp

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memory/740-135-0x0000000004CA0000-0x0000000004D06000-memory.dmp

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memory/740-133-0x00000000001A0000-0x00000000001D0000-memory.dmp

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memory/740-273-0x0000000005A90000-0x0000000005B22000-memory.dmp

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memory/740-274-0x00000000060E0000-0x0000000006684000-memory.dmp

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memory/740-278-0x0000000005BB0000-0x0000000005BBA000-memory.dmp

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memory/740-134-0x0000000000D20000-0x0000000000D30000-memory.dmp

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memory/740-284-0x0000000005BC0000-0x0000000005BD2000-memory.dmp

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memory/740-308-0x0000000000D20000-0x0000000000D30000-memory.dmp

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