asyncrat | f414e4465043ddc7e7d558b341d2fefaf62a379d8107c7bc7b39a3d3f4c55b56

Analysis

max time kernel
31s
max time network
34s
platform
windows10-2004_x64
resource
win10v2004-20230221-en
resource tags

arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
submitted
24-04-2023 20:27

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General

Target

Redline Stealer v24.2 cracked [XT_CH]/Kurome.Loader/Kurome Loader 24.2.exe
Size

923KB
MD5

ad5e1454eb96c012755dcab90cfd69cf
SHA1

17f93458b223542eed1c269d9c64b8c39341b1cd
SHA256

726725262283f68ec3e3f62d13863c7df9b08f54e19c28603407d98631468494
SHA512

1f503e6619ff5cd87838b4618400ae54c24d5f618813cfd8ce7ecdd53f25d74186dda096a1a2ab49848184e22137c05de0fbf010a0ccc9adcc5b58e727da1d46
SSDEEP

12288:0MSApJVYG5lDLyjsb0eOzkv4R7QnvUUilQ35+6G75V9Z0N6qsUwXPDgj:0nsJ39LyjbJkQFMhmC+6GD9UaE

Score

10^/10

asyncrat stormkitty default persistence rat 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 12 IoCs

resource	yara_rule
behavioral7/files/0x000200000001e7de-136.dat	family_stormkitty
behavioral7/files/0x000200000001e7de-195.dat	family_stormkitty
behavioral7/files/0x000200000001e7de-197.dat	family_stormkitty
behavioral7/files/0x0007000000023154-199.dat	family_stormkitty
behavioral7/memory/212-259-0x00000000004B0000-0x00000000004E0000-memory.dmp	family_stormkitty
behavioral7/files/0x0007000000023154-260.dat	family_stormkitty
behavioral7/files/0x0007000000023154-261.dat	family_stormkitty
behavioral7/memory/1388-262-0x0000000000400000-0x00000000004ED000-memory.dmp	family_stormkitty
behavioral7/files/0x00030000000224e3-323.dat	family_stormkitty
behavioral7/files/0x00030000000224e3-324.dat	family_stormkitty
behavioral7/memory/668-361-0x0000000000400000-0x00000000004ED000-memory.dmp	family_stormkitty
behavioral7/memory/668-366-0x0000000000400000-0x00000000004ED000-memory.dmp	family_stormkitty

Async RAT payload 12 IoCs

rat

resource	yara_rule
behavioral7/files/0x000200000001e7de-136.dat	asyncrat
behavioral7/files/0x000200000001e7de-195.dat	asyncrat
behavioral7/files/0x000200000001e7de-197.dat	asyncrat
behavioral7/files/0x0007000000023154-199.dat	asyncrat
behavioral7/memory/212-259-0x00000000004B0000-0x00000000004E0000-memory.dmp	asyncrat
behavioral7/files/0x0007000000023154-260.dat	asyncrat
behavioral7/files/0x0007000000023154-261.dat	asyncrat
behavioral7/memory/1388-262-0x0000000000400000-0x00000000004ED000-memory.dmp	asyncrat
behavioral7/files/0x00030000000224e3-323.dat	asyncrat
behavioral7/files/0x00030000000224e3-324.dat	asyncrat
behavioral7/memory/668-361-0x0000000000400000-0x00000000004ED000-memory.dmp	asyncrat
behavioral7/memory/668-366-0x0000000000400000-0x00000000004ED000-memory.dmp	asyncrat

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Control Panel\International\Geo\Nation	Kurome Loader 24.2.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Control Panel\International\Geo\Nation	Synaptics.exe

Executes dropped EXE 3 IoCs

pid	Process
212	._cache_Kurome Loader 24.2.exe
668	Synaptics.exe
4612	._cache_Synaptics.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Synaptics Pointing Device Driver = "C:\\ProgramData\\Synaptics\\Synaptics.exe"	Kurome Loader 24.2.exe

Drops desktop.ini file(s) 16 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\fbd550f961f52b1a90d58aa5a08307b3\Admin@UXINIZSV_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	._cache_Kurome Loader 24.2.exe
File created	C:\Users\Admin\AppData\Local\fbd550f961f52b1a90d58aa5a08307b3\Admin@UXINIZSV_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	._cache_Kurome Loader 24.2.exe
File opened for modification	C:\Users\Admin\AppData\Local\fbd550f961f52b1a90d58aa5a08307b3\Admin@UXINIZSV_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	._cache_Kurome Loader 24.2.exe
File created	C:\Users\Admin\AppData\Local\0e4e5fa8b2bea742ba4e0cd4a6e9add1\Admin@UXINIZSV_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	._cache_Synaptics.exe
File created	C:\Users\Admin\AppData\Local\0e4e5fa8b2bea742ba4e0cd4a6e9add1\Admin@UXINIZSV_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	._cache_Synaptics.exe
File created	C:\Users\Admin\AppData\Local\0e4e5fa8b2bea742ba4e0cd4a6e9add1\Admin@UXINIZSV_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	._cache_Synaptics.exe
File opened for modification	C:\Users\Admin\AppData\Local\fbd550f961f52b1a90d58aa5a08307b3\Admin@UXINIZSV_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	._cache_Kurome Loader 24.2.exe
File created	C:\Users\Admin\AppData\Local\fbd550f961f52b1a90d58aa5a08307b3\Admin@UXINIZSV_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	._cache_Kurome Loader 24.2.exe
File created	C:\Users\Admin\AppData\Local\0e4e5fa8b2bea742ba4e0cd4a6e9add1\Admin@UXINIZSV_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	._cache_Synaptics.exe
File opened for modification	C:\Users\Admin\AppData\Local\0e4e5fa8b2bea742ba4e0cd4a6e9add1\Admin@UXINIZSV_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	._cache_Synaptics.exe
File opened for modification	C:\Users\Admin\AppData\Local\fbd550f961f52b1a90d58aa5a08307b3\Admin@UXINIZSV_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	._cache_Kurome Loader 24.2.exe
File created	C:\Users\Admin\AppData\Local\fbd550f961f52b1a90d58aa5a08307b3\Admin@UXINIZSV_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	._cache_Kurome Loader 24.2.exe
File created	C:\Users\Admin\AppData\Local\0e4e5fa8b2bea742ba4e0cd4a6e9add1\Admin@UXINIZSV_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	._cache_Synaptics.exe
File created	C:\Users\Admin\AppData\Local\fbd550f961f52b1a90d58aa5a08307b3\Admin@UXINIZSV_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	._cache_Kurome Loader 24.2.exe
File created	C:\Users\Admin\AppData\Local\fbd550f961f52b1a90d58aa5a08307b3\Admin@UXINIZSV_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	._cache_Kurome Loader 24.2.exe
File created	C:\Users\Admin\AppData\Local\0e4e5fa8b2bea742ba4e0cd4a6e9add1\Admin@UXINIZSV_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	._cache_Synaptics.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1588	212	WerFault.exe	84
236	4612	WerFault.exe	86

Checks processor information in registry 2 TTPs 3 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	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Kurome Loader 24.2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Synaptics.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3492	EXCEL.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	212	._cache_Kurome Loader 24.2.exe
Token: SeDebugPrivilege	4612	._cache_Synaptics.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3492	EXCEL.EXE
3492	EXCEL.EXE
3492	EXCEL.EXE
3492	EXCEL.EXE

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1388 wrote to memory of 212	1388	Kurome Loader 24.2.exe	84
PID 1388 wrote to memory of 212	1388	Kurome Loader 24.2.exe	84
PID 1388 wrote to memory of 212	1388	Kurome Loader 24.2.exe	84
PID 1388 wrote to memory of 668	1388	Kurome Loader 24.2.exe	85
PID 1388 wrote to memory of 668	1388	Kurome Loader 24.2.exe	85
PID 1388 wrote to memory of 668	1388	Kurome Loader 24.2.exe	85
PID 668 wrote to memory of 4612	668	Synaptics.exe	86
PID 668 wrote to memory of 4612	668	Synaptics.exe	86
PID 668 wrote to memory of 4612	668	Synaptics.exe	86

C:\Users\Admin\AppData\Local\Temp\Redline Stealer v24.2 cracked [XT_CH]\Kurome.Loader\Kurome Loader 24.2.exe
"C:\Users\Admin\AppData\Local\Temp\Redline Stealer v24.2 cracked [XT_CH]\Kurome.Loader\Kurome Loader 24.2.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1388
- C:\Users\Admin\AppData\Local\Temp\Redline Stealer v24.2 cracked [XT_CH]\Kurome.Loader\._cache_Kurome Loader 24.2.exe
  "C:\Users\Admin\AppData\Local\Temp\Redline Stealer v24.2 cracked [XT_CH]\Kurome.Loader\._cache_Kurome Loader 24.2.exe"
  2⤵
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - Suspicious use of AdjustPrivilegeToken
  PID:212
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 212 -s 1392
    3⤵
    - Program crash
    PID:1588
- C:\ProgramData\Synaptics\Synaptics.exe
  "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:668
- - C:\Users\Admin\AppData\Local\Temp\Redline Stealer v24.2 cracked [XT_CH]\Kurome.Loader\._cache_Synaptics.exe
    "C:\Users\Admin\AppData\Local\Temp\Redline Stealer v24.2 cracked [XT_CH]\Kurome.Loader\._cache_Synaptics.exe" InjUpdate
    3⤵
    - Executes dropped EXE
    - Drops desktop.ini file(s)
    - Suspicious use of AdjustPrivilegeToken
    PID:4612
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4612 -s 1392
      4⤵
      Program crash
      PID:236

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" /automation -Embedding
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:3492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 212 -ip 212
1⤵
PID:4228

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 4612 -ip 4612
1⤵
PID:2032

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\Synaptics\Synaptics.exe

Filesize
923KB

MD5
ad5e1454eb96c012755dcab90cfd69cf

SHA1
17f93458b223542eed1c269d9c64b8c39341b1cd

SHA256
726725262283f68ec3e3f62d13863c7df9b08f54e19c28603407d98631468494

SHA512
1f503e6619ff5cd87838b4618400ae54c24d5f618813cfd8ce7ecdd53f25d74186dda096a1a2ab49848184e22137c05de0fbf010a0ccc9adcc5b58e727da1d46

Download Submit
C:\ProgramData\Synaptics\Synaptics.exe

Filesize
923KB

MD5
ad5e1454eb96c012755dcab90cfd69cf

SHA1
17f93458b223542eed1c269d9c64b8c39341b1cd

SHA256
726725262283f68ec3e3f62d13863c7df9b08f54e19c28603407d98631468494

SHA512
1f503e6619ff5cd87838b4618400ae54c24d5f618813cfd8ce7ecdd53f25d74186dda096a1a2ab49848184e22137c05de0fbf010a0ccc9adcc5b58e727da1d46

Download Submit
C:\ProgramData\Synaptics\Synaptics.exe

Filesize
923KB

MD5
ad5e1454eb96c012755dcab90cfd69cf

SHA1
17f93458b223542eed1c269d9c64b8c39341b1cd

SHA256
726725262283f68ec3e3f62d13863c7df9b08f54e19c28603407d98631468494

SHA512
1f503e6619ff5cd87838b4618400ae54c24d5f618813cfd8ce7ecdd53f25d74186dda096a1a2ab49848184e22137c05de0fbf010a0ccc9adcc5b58e727da1d46

Download Submit
C:\Users\Admin\AppData\Local\Temp\Redline Stealer v24.2 cracked [XT_CH]\Kurome.Loader\._cache_Kurome Loader 24.2.exe

Filesize
170KB

MD5
470a8267b5eba7eb998d9fa69532f849

SHA1
1152ddb2ab93aae9983e3e8b5c4f367875323e3e

SHA256
6cdb8d1af85d10ed3022ae0a183e3e9dff0ad1bc4a90915e7e41b600154a349e

SHA512
5f151230dc97e0804cbe7b36ce9a4570023bdaf0283ae2681732a835c26e540ec93f9c56cd78599c8deeeaed10b2b50f9c976c85ad95d4e36460e05083f7048d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Redline Stealer v24.2 cracked [XT_CH]\Kurome.Loader\._cache_Kurome Loader 24.2.exe

Filesize
170KB

MD5
470a8267b5eba7eb998d9fa69532f849

SHA1
1152ddb2ab93aae9983e3e8b5c4f367875323e3e

SHA256
6cdb8d1af85d10ed3022ae0a183e3e9dff0ad1bc4a90915e7e41b600154a349e

SHA512
5f151230dc97e0804cbe7b36ce9a4570023bdaf0283ae2681732a835c26e540ec93f9c56cd78599c8deeeaed10b2b50f9c976c85ad95d4e36460e05083f7048d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Redline Stealer v24.2 cracked [XT_CH]\Kurome.Loader\._cache_Kurome Loader 24.2.exe

Filesize
170KB

MD5
470a8267b5eba7eb998d9fa69532f849

SHA1
1152ddb2ab93aae9983e3e8b5c4f367875323e3e

SHA256
6cdb8d1af85d10ed3022ae0a183e3e9dff0ad1bc4a90915e7e41b600154a349e

SHA512
5f151230dc97e0804cbe7b36ce9a4570023bdaf0283ae2681732a835c26e540ec93f9c56cd78599c8deeeaed10b2b50f9c976c85ad95d4e36460e05083f7048d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Redline Stealer v24.2 cracked [XT_CH]\Kurome.Loader\._cache_Synaptics.exe

Filesize
170KB

MD5
470a8267b5eba7eb998d9fa69532f849

SHA1
1152ddb2ab93aae9983e3e8b5c4f367875323e3e

SHA256
6cdb8d1af85d10ed3022ae0a183e3e9dff0ad1bc4a90915e7e41b600154a349e

SHA512
5f151230dc97e0804cbe7b36ce9a4570023bdaf0283ae2681732a835c26e540ec93f9c56cd78599c8deeeaed10b2b50f9c976c85ad95d4e36460e05083f7048d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Redline Stealer v24.2 cracked [XT_CH]\Kurome.Loader\._cache_Synaptics.exe

Filesize
170KB

MD5
470a8267b5eba7eb998d9fa69532f849

SHA1
1152ddb2ab93aae9983e3e8b5c4f367875323e3e

SHA256
6cdb8d1af85d10ed3022ae0a183e3e9dff0ad1bc4a90915e7e41b600154a349e

SHA512
5f151230dc97e0804cbe7b36ce9a4570023bdaf0283ae2681732a835c26e540ec93f9c56cd78599c8deeeaed10b2b50f9c976c85ad95d4e36460e05083f7048d

Download Submit
C:\Users\Admin\AppData\Local\Temp\iO1tuXsQ.xlsm

Filesize
17KB

MD5
e566fc53051035e1e6fd0ed1823de0f9

SHA1
00bc96c48b98676ecd67e81a6f1d7754e4156044

SHA256
8e574b4ae6502230c0829e2319a6c146aebd51b7008bf5bbfb731424d7952c15

SHA512
a12f56ff30ea35381c2b8f8af2446cf1daa21ee872e98cad4b863db060acd4c33c5760918c277dadb7a490cb4ca2f925d59c70dc5171e16601a11bc4a6542b04

Download Submit
memory/212-333-0x0000000004E20000-0x0000000004E86000-memory.dmp

Filesize
408KB

Download
memory/212-313-0x0000000000F50000-0x0000000000F60000-memory.dmp

Filesize
64KB

Download
memory/212-259-0x00000000004B0000-0x00000000004E0000-memory.dmp

Filesize
192KB

Download
memory/668-314-0x0000000002030000-0x0000000002031000-memory.dmp

Filesize
4KB

Download
memory/668-366-0x0000000000400000-0x00000000004ED000-memory.dmp

Filesize
948KB

Download
memory/668-362-0x0000000002030000-0x0000000002031000-memory.dmp

Filesize
4KB

Download
memory/668-361-0x0000000000400000-0x00000000004ED000-memory.dmp

Filesize
948KB

Download
memory/1388-183-0x0000000002260000-0x0000000002261000-memory.dmp

Filesize
4KB

Download
memory/1388-262-0x0000000000400000-0x00000000004ED000-memory.dmp

Filesize
948KB

Download
memory/3492-328-0x00007FFA94230000-0x00007FFA94240000-memory.dmp

Filesize
64KB

Download
memory/3492-331-0x00007FFA92070000-0x00007FFA92080000-memory.dmp

Filesize
64KB

Download
memory/3492-332-0x00007FFA92070000-0x00007FFA92080000-memory.dmp

Filesize
64KB

Download
memory/3492-330-0x00007FFA94230000-0x00007FFA94240000-memory.dmp

Filesize
64KB

Download
memory/3492-329-0x00007FFA94230000-0x00007FFA94240000-memory.dmp

Filesize
64KB

Download
memory/3492-327-0x00007FFA94230000-0x00007FFA94240000-memory.dmp

Filesize
64KB

Download
memory/3492-326-0x00007FFA94230000-0x00007FFA94240000-memory.dmp

Filesize
64KB

Download
memory/4612-325-0x0000000005700000-0x0000000005710000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads