asyncrat | 9c98af46658c1d03d1befdb088719d324f3891f05c1a6b1b2ee436a5a5552ec4

Analysis

max time kernel
147s
max time network
130s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
02/08/2023, 12:12

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General

Target
9c.exe
Size 226KB
Sample230802-pdnz6sef37
SHA256 9c98af46658c1d03d1befdb088719d324f3891f05c1a6b1b2ee436a5a5552ec4
MD5 53ddfe229bb020d36166edb9b5d722f8
SHA1 f0035ce182a1c107ef8e08fa96ea22c558db8c18
SHA512 24b1b279f8b90a185dd6ded087878ff83c61469b1266fec41276e2eb19ee6ac51089be7b02146f35364f7f567d3335746a7e6a4e57b460fb41b7f035e7daa6b1
SSDEEP 3072:2+STW8djpN6izj8mZw9KalFI8OSyz6UbB2a9w7F9d16ug6+WpP:L8XN6W8mm0OUbwrFzg
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/bot5012120140:AAFYUA4Q8F0hkeg6HHkMOWhAJcA6-6lhzvc/sendMessage?chat_id=265371884

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/1752-133-0x00000000004D0000-0x000000000050E000-memory.dmp	family_stormkitty

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/1752-133-0x00000000004D0000-0x000000000050E000-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) 8 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\f2524fca85c7eb0b0f7d242836613f3e\Admin@HISXQJCD_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	9c.exe
File created	C:\Users\Admin\AppData\Local\f2524fca85c7eb0b0f7d242836613f3e\Admin@HISXQJCD_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	9c.exe
File created	C:\Users\Admin\AppData\Local\f2524fca85c7eb0b0f7d242836613f3e\Admin@HISXQJCD_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	9c.exe
File created	C:\Users\Admin\AppData\Local\f2524fca85c7eb0b0f7d242836613f3e\Admin@HISXQJCD_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	9c.exe
File opened for modification	C:\Users\Admin\AppData\Local\f2524fca85c7eb0b0f7d242836613f3e\Admin@HISXQJCD_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	9c.exe
File created	C:\Users\Admin\AppData\Local\f2524fca85c7eb0b0f7d242836613f3e\Admin@HISXQJCD_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	9c.exe
File opened for modification	C:\Users\Admin\AppData\Local\f2524fca85c7eb0b0f7d242836613f3e\Admin@HISXQJCD_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	9c.exe
File created	C:\Users\Admin\AppData\Local\f2524fca85c7eb0b0f7d242836613f3e\Admin@HISXQJCD_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	9c.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
43	icanhazip.com

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

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe
1752	9c.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1752	9c.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1752 wrote to memory of 4896	1752	9c.exe	97
PID 1752 wrote to memory of 4896	1752	9c.exe	97
PID 1752 wrote to memory of 4896	1752	9c.exe	97
PID 4896 wrote to memory of 2104	4896	cmd.exe	99
PID 4896 wrote to memory of 2104	4896	cmd.exe	99
PID 4896 wrote to memory of 2104	4896	cmd.exe	99
PID 4896 wrote to memory of 792	4896	cmd.exe	100
PID 4896 wrote to memory of 792	4896	cmd.exe	100
PID 4896 wrote to memory of 792	4896	cmd.exe	100
PID 4896 wrote to memory of 828	4896	cmd.exe	101
PID 4896 wrote to memory of 828	4896	cmd.exe	101
PID 4896 wrote to memory of 828	4896	cmd.exe	101
PID 1752 wrote to memory of 3616	1752	9c.exe	102
PID 1752 wrote to memory of 3616	1752	9c.exe	102
PID 1752 wrote to memory of 3616	1752	9c.exe	102
PID 3616 wrote to memory of 2076	3616	cmd.exe	104
PID 3616 wrote to memory of 2076	3616	cmd.exe	104
PID 3616 wrote to memory of 2076	3616	cmd.exe	104
PID 3616 wrote to memory of 2360	3616	cmd.exe	105
PID 3616 wrote to memory of 2360	3616	cmd.exe	105
PID 3616 wrote to memory of 2360	3616	cmd.exe	105

C:\Users\Admin\AppData\Local\Temp\9c.exe
"C:\Users\Admin\AppData\Local\Temp\9c.exe"
1⤵
- Drops desktop.ini file(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1752
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4896
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:2104
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show profile
    3⤵
    PID:792
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    PID:828
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3616
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:2076
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    PID:2360

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

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\15dd243ffaac8f56c5368c5912616364\msgid.dat
Size 2B
SHA256 8c1f1046219ddd216a023f792356ddf127fce372a72ec9b4cdac989ee5b0b455
MD5 ac627ab1ccbdb62ec96e702f07f6425b
SHA1 9a79be611e0267e1d943da0737c6c51be67865a0
SHA512 6781a9e05f5e327a138f3d09ce0211ce4f166d940a14b46373e44402a3f3754cab4109f62c50777cbc1e3c4f1b8e6234e8d0b41281571bf0e1bd480c12149830
MD5 SHA1 SHA512

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Process.txt

Path C:\Users\Admin\AppData\Local\f2524fca85c7eb0b0f7d242836613f3e\Admin@HISXQJCD_en-US\System\Process.txt
Size 4KB
SHA256 c3a0efd0999c45f85299f163912460dec0059033f1aade8c59c080a63810f662
MD5 a5f8fe858e6aba8db766a0a47f5a6275
SHA1 ee65bd38eb3e2b72d21b5abe1ba2d85deef8b48d
SHA512 da7c090f8af775cb32093e99651dc230c0645bcfe1073439ae7af889101a19cded519b87f84a1c6a8431b513fa0bcb13d826ac1c6a718147f4c7503faae13f03
SSDEEP 48:K2I234tCI2qc58ibJFMKFm6bsuTDO4pnKMvJCDjcr2:K2I234tCIq8iFqKNbsuTDLnKNDoq
MD5 SHA1 SHA512 SSDEEP

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memory/1752-136-0x0000000004FC0000-0x0000000005026000-memory.dmp

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memory/1752-133-0x00000000004D0000-0x000000000050E000-memory.dmp

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memory/1752-205-0x0000000074580000-0x0000000074D30000-memory.dmp

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memory/1752-215-0x0000000004FB0000-0x0000000004FC0000-memory.dmp

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memory/1752-135-0x0000000004FB0000-0x0000000004FC0000-memory.dmp

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memory/1752-285-0x0000000004FB0000-0x0000000004FC0000-memory.dmp

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memory/1752-287-0x0000000005E20000-0x0000000005EB2000-memory.dmp

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memory/1752-288-0x0000000006470000-0x0000000006A14000-memory.dmp

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memory/1752-292-0x0000000005F40000-0x0000000005F4A000-memory.dmp

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memory/1752-134-0x0000000074580000-0x0000000074D30000-memory.dmp

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memory/1752-298-0x0000000006030000-0x0000000006042000-memory.dmp

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memory/1752-323-0x0000000004FB0000-0x0000000004FC0000-memory.dmp

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