asyncrat | f414e4465043ddc7e7d558b341d2fefaf62a379d8107c7bc7b39a3d3f4c55b56

Analysis

max time kernel
147s
max time network
149s
platform
windows10-1703_x64
resource
win10-20230220-en
resource tags

arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
submitted
24-04-2023 15:39

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General

Target

Redline Stealer v24.2 cracked [XT_CH]/Kurome.Loader/._cache_Kurome Loader 20.2.exe
Size

170KB
MD5

470a8267b5eba7eb998d9fa69532f849
SHA1

1152ddb2ab93aae9983e3e8b5c4f367875323e3e
SHA256

6cdb8d1af85d10ed3022ae0a183e3e9dff0ad1bc4a90915e7e41b600154a349e
SHA512

5f151230dc97e0804cbe7b36ce9a4570023bdaf0283ae2681732a835c26e540ec93f9c56cd78599c8deeeaed10b2b50f9c976c85ad95d4e36460e05083f7048d
SSDEEP

3072:O+STW8djpN6izj8mZwHQiWZqswqIPu/i9b+J2cOZTMi56+WpL:z8XN6W8mmdUwXPSi9b2c3

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/bot6093966625:AAHk4dddHb8B1faCcFqL3um1gmB-f2mWhyc/sendMessage?chat_id=5529838804

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

Processes:

resource	yara_rule
behavioral10/memory/2140-121-0x0000000000AC0000-0x0000000000AF0000-memory.dmp	family_stormkitty

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral10/memory/2140-121-0x0000000000AC0000-0x0000000000AF0000-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) 8 IoCs

Processes:

._cache_Kurome Loader 20.2.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Local\03cfe76e7b699cef44f2ac792285e61d\Admin@WBIJUTSD_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	._cache_Kurome Loader 20.2.exe
File created	C:\Users\Admin\AppData\Local\03cfe76e7b699cef44f2ac792285e61d\Admin@WBIJUTSD_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	._cache_Kurome Loader 20.2.exe
File created	C:\Users\Admin\AppData\Local\03cfe76e7b699cef44f2ac792285e61d\Admin@WBIJUTSD_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	._cache_Kurome Loader 20.2.exe
File created	C:\Users\Admin\AppData\Local\03cfe76e7b699cef44f2ac792285e61d\Admin@WBIJUTSD_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	._cache_Kurome Loader 20.2.exe
File created	C:\Users\Admin\AppData\Local\03cfe76e7b699cef44f2ac792285e61d\Admin@WBIJUTSD_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	._cache_Kurome Loader 20.2.exe
File opened for modification	C:\Users\Admin\AppData\Local\03cfe76e7b699cef44f2ac792285e61d\Admin@WBIJUTSD_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	._cache_Kurome Loader 20.2.exe
File created	C:\Users\Admin\AppData\Local\03cfe76e7b699cef44f2ac792285e61d\Admin@WBIJUTSD_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	._cache_Kurome Loader 20.2.exe
File opened for modification	C:\Users\Admin\AppData\Local\03cfe76e7b699cef44f2ac792285e61d\Admin@WBIJUTSD_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	._cache_Kurome Loader 20.2.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.

Processes:

flow ioc

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

flow	ioc
2	icanhazip.com

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

Processes:

._cache_Kurome Loader 20.2.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	._cache_Kurome Loader 20.2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	._cache_Kurome Loader 20.2.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

Processes:

._cache_Kurome Loader 20.2.exe

pid	process
2140	._cache_Kurome Loader 20.2.exe
2140	._cache_Kurome Loader 20.2.exe
2140	._cache_Kurome Loader 20.2.exe
2140	._cache_Kurome Loader 20.2.exe
2140	._cache_Kurome Loader 20.2.exe
2140	._cache_Kurome Loader 20.2.exe
2140	._cache_Kurome Loader 20.2.exe
2140	._cache_Kurome Loader 20.2.exe
2140	._cache_Kurome Loader 20.2.exe
2140	._cache_Kurome Loader 20.2.exe
2140	._cache_Kurome Loader 20.2.exe
2140	._cache_Kurome Loader 20.2.exe
2140	._cache_Kurome Loader 20.2.exe
2140	._cache_Kurome Loader 20.2.exe
2140	._cache_Kurome Loader 20.2.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

._cache_Kurome Loader 20.2.exe

description pid process

Token: SeDebugPrivilege 2140 ._cache_Kurome Loader 20.2.exe

description	pid	process
Token: SeDebugPrivilege	2140	._cache_Kurome Loader 20.2.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

._cache_Kurome Loader 20.2.execmd.execmd.exe

description	pid	process	target process
PID 2140 wrote to memory of 3128	2140	._cache_Kurome Loader 20.2.exe	cmd.exe
PID 2140 wrote to memory of 3128	2140	._cache_Kurome Loader 20.2.exe	cmd.exe
PID 2140 wrote to memory of 3128	2140	._cache_Kurome Loader 20.2.exe	cmd.exe
PID 3128 wrote to memory of 4700	3128	cmd.exe	chcp.com
PID 3128 wrote to memory of 4700	3128	cmd.exe	chcp.com
PID 3128 wrote to memory of 4700	3128	cmd.exe	chcp.com
PID 3128 wrote to memory of 3812	3128	cmd.exe	netsh.exe
PID 3128 wrote to memory of 3812	3128	cmd.exe	netsh.exe
PID 3128 wrote to memory of 3812	3128	cmd.exe	netsh.exe
PID 3128 wrote to memory of 4764	3128	cmd.exe	findstr.exe
PID 3128 wrote to memory of 4764	3128	cmd.exe	findstr.exe
PID 3128 wrote to memory of 4764	3128	cmd.exe	findstr.exe
PID 2140 wrote to memory of 3104	2140	._cache_Kurome Loader 20.2.exe	cmd.exe
PID 2140 wrote to memory of 3104	2140	._cache_Kurome Loader 20.2.exe	cmd.exe
PID 2140 wrote to memory of 3104	2140	._cache_Kurome Loader 20.2.exe	cmd.exe
PID 3104 wrote to memory of 440	3104	cmd.exe	chcp.com
PID 3104 wrote to memory of 440	3104	cmd.exe	chcp.com
PID 3104 wrote to memory of 440	3104	cmd.exe	chcp.com
PID 3104 wrote to memory of 3892	3104	cmd.exe	netsh.exe
PID 3104 wrote to memory of 3892	3104	cmd.exe	netsh.exe
PID 3104 wrote to memory of 3892	3104	cmd.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\Redline Stealer v24.2 cracked [XT_CH]\Kurome.Loader\._cache_Kurome Loader 20.2.exe
"C:\Users\Admin\AppData\Local\Temp\Redline Stealer v24.2 cracked [XT_CH]\Kurome.Loader\._cache_Kurome Loader 20.2.exe"
1⤵
- Drops desktop.ini file(s)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2140

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
2⤵
- Suspicious use of WriteProcessMemory
PID:3128

C:\Windows\SysWOW64\chcp.com
chcp 65001
3⤵
PID:4700

C:\Windows\SysWOW64\netsh.exe
netsh wlan show profile
3⤵
PID:3812

C:\Windows\SysWOW64\findstr.exe
findstr All
3⤵
PID:4764

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
2⤵
- Suspicious use of WriteProcessMemory
PID:3104

C:\Windows\SysWOW64\chcp.com
chcp 65001
3⤵
PID:440

C:\Windows\SysWOW64\netsh.exe
netsh wlan show networks mode=bssid
3⤵
PID:3892

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\75eaffb55ece329fa6fe967b617bc3dc\msgid.dat
Filesize
2B

MD5
98dce83da57b0395e163467c9dae521b

SHA1
08a35293e09f508494096c1c1b3819edb9df50db

SHA256
6e4001871c0cf27c7634ef1dc478408f642410fd3a444e2a88e301f5c4a35a4d

SHA512
bb85a0a8c0de7fcd6034177952d6affe0785c0d7760b921239b1b0749fbeacc3176729196e1c53f0aee0056daa96245eca6c01966aaad811519e514edfaa883c

Download Submit
memory/2140-121-0x0000000000AC0000-0x0000000000AF0000-memory.dmp

Filesize
192KB

Download
memory/2140-122-0x0000000005320000-0x0000000005330000-memory.dmp

Filesize
64KB

Download
memory/2140-123-0x00000000054A0000-0x0000000005506000-memory.dmp

Filesize
408KB

Download
memory/2140-195-0x0000000005320000-0x0000000005330000-memory.dmp

Filesize
64KB

Download
memory/2140-233-0x0000000005DE0000-0x0000000005E72000-memory.dmp

Filesize
584KB

Download
memory/2140-234-0x0000000006380000-0x000000000687E000-memory.dmp

Filesize
5.0MB

Download
memory/2140-236-0x0000000005320000-0x0000000005330000-memory.dmp

Filesize
64KB

Download
memory/2140-239-0x0000000005FF0000-0x0000000005FFA000-memory.dmp

Filesize
40KB

Download
memory/2140-245-0x0000000006CA0000-0x0000000006CB2000-memory.dmp

Filesize
72KB

Download
memory/2140-269-0x0000000005320000-0x0000000005330000-memory.dmp

Filesize
64KB

Download