stormkitty | b96640cb2a36f9bbaf48fe4798091068b9f518af783236e759763f2386f6a157

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-12-2024 17:25

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General

Target

LibraryDownload.exe
Size

171KB
MD5

0f4733702f7441130c76f92271e33d52
SHA1

962c64538ad4b11b0a57a269e726476eaf1e5cd4
SHA256

b96640cb2a36f9bbaf48fe4798091068b9f518af783236e759763f2386f6a157
SHA512

3718e10cdbb2dd1089a3cc4437c0884593ed0194953e0e0d6865b33475ffd2d8b9bcdffe5e8fade78eb4078b6777ca65618617a2563007b77998c273d85be0f5
SSDEEP

3072:vOMQnN3iDf+bpT7E3ubGoOmaG8vwps/Bz65/M6If+3Js+3JFkKeTnu:vOnxwWboub+As/xBt25

Score

10^/10

stormkitty xworm discovery execution persistence rat spyware stealer trojan vmprotect

Malware Config

Extracted

Family

xworm

designed-paragraph.gl.at.ply.gg:6553

Attributes

Install_directory
%AppData%
install_file
OneDrive.exe
telegram
https://api.telegram.org/bot7632521130:AAFUdxmN095QSre97Sy3YKm36m78BuQCg7g/sendMessage?chat_id=6370415730

Signatures

Contains code to disable Windows Defender 1 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

Processes:

resource	yara_rule
behavioral1/memory/5072-59-0x000000001BCB0000-0x000000001BCBE000-memory.dmp	disable_win_def

Detect Xworm Payload 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/5072-1-0x0000000000E50000-0x0000000000E80000-memory.dmp	family_xworm
behavioral1/files/0x0011000000023c79-60.dat	family_xworm

StormKitty
StormKitty is an open source info stealer written in C#.
stealer stormkitty

StormKitty payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/5072-71-0x000000001E3F0000-0x000000001E510000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid	Process
4044	powershell.exe
4800	powershell.exe
2512	powershell.exe
3748	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

LibraryDownload.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	LibraryDownload.exe

Drops startup file 2 IoCs

Processes:

LibraryDownload.exe

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\OneDrive.lnk	LibraryDownload.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\OneDrive.lnk	LibraryDownload.exe

Executes dropped EXE 4 IoCs

Processes:

fkbhne.exeOneDrive.exeOneDrive.exeOneDrive.exe

pid	Process
4568	fkbhne.exe
2984	OneDrive.exe
1880	OneDrive.exe
3136	OneDrive.exe

Loads dropped DLL 1 IoCs

Processes:

LibraryDownload.exe

pid	Process
5072	LibraryDownload.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

VMProtect packed file 1 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

Processes:

resource	yara_rule
behavioral1/files/0x0003000000000709-132.dat	vmprotect

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

LibraryDownload.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\OneDrive = "C:\\Users\\Admin\\AppData\\Roaming\\OneDrive.exe"	LibraryDownload.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

LibraryDownload.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings	LibraryDownload.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

Processes:

NOTEPAD.EXE

pid	Process
2980	NOTEPAD.EXE

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

Processes:

schtasks.exe

pid	Process
1540	schtasks.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeLibraryDownload.exe

pid	Process
4044	powershell.exe
4044	powershell.exe
4800	powershell.exe
4800	powershell.exe
2512	powershell.exe
2512	powershell.exe
3748	powershell.exe
3748	powershell.exe
5072	LibraryDownload.exe
5072	LibraryDownload.exe
5072	LibraryDownload.exe
5072	LibraryDownload.exe
5072	LibraryDownload.exe
5072	LibraryDownload.exe
5072	LibraryDownload.exe
5072	LibraryDownload.exe
5072	LibraryDownload.exe
5072	LibraryDownload.exe
5072	LibraryDownload.exe
5072	LibraryDownload.exe
5072	LibraryDownload.exe
5072	LibraryDownload.exe
5072	LibraryDownload.exe
5072	LibraryDownload.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

Processes:

LibraryDownload.exepowershell.exepowershell.exepowershell.exepowershell.exefkbhne.exeOneDrive.exeAUDIODG.EXEOneDrive.exeOneDrive.exe

description	pid	Process
Token: SeDebugPrivilege	5072	LibraryDownload.exe
Token: SeDebugPrivilege	4044	powershell.exe
Token: SeDebugPrivilege	4800	powershell.exe
Token: SeDebugPrivilege	2512	powershell.exe
Token: SeDebugPrivilege	3748	powershell.exe
Token: SeDebugPrivilege	4568	fkbhne.exe
Token: SeDebugPrivilege	2984	OneDrive.exe
Token: 33	4520	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	4520	AUDIODG.EXE
Token: SeDebugPrivilege	1880	OneDrive.exe
Token: SeDebugPrivilege	3136	OneDrive.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

LibraryDownload.exe

pid	Process
5072	LibraryDownload.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

LibraryDownload.exe

description	pid	Process	procid_target
PID 5072 wrote to memory of 4044	5072	LibraryDownload.exe	82
PID 5072 wrote to memory of 4044	5072	LibraryDownload.exe	82
PID 5072 wrote to memory of 4800	5072	LibraryDownload.exe	84
PID 5072 wrote to memory of 4800	5072	LibraryDownload.exe	84
PID 5072 wrote to memory of 2512	5072	LibraryDownload.exe	86
PID 5072 wrote to memory of 2512	5072	LibraryDownload.exe	86
PID 5072 wrote to memory of 3748	5072	LibraryDownload.exe	88
PID 5072 wrote to memory of 3748	5072	LibraryDownload.exe	88
PID 5072 wrote to memory of 1540	5072	LibraryDownload.exe	90
PID 5072 wrote to memory of 1540	5072	LibraryDownload.exe	90
PID 5072 wrote to memory of 4568	5072	LibraryDownload.exe	99
PID 5072 wrote to memory of 4568	5072	LibraryDownload.exe	99
PID 5072 wrote to memory of 2980	5072	LibraryDownload.exe	109
PID 5072 wrote to memory of 2980	5072	LibraryDownload.exe	109

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\LibraryDownload.exe
"C:\Users\Admin\AppData\Local\Temp\LibraryDownload.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Loads dropped DLL
- Adds Run key to start application
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5072
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\LibraryDownload.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4044
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'LibraryDownload.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4800
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\OneDrive.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2512
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'OneDrive.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3748
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "OneDrive" /tr "C:\Users\Admin\AppData\Roaming\OneDrive.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1540
- C:\Users\Admin\AppData\Local\Temp\fkbhne.exe
  "C:\Users\Admin\AppData\Local\Temp\fkbhne.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:4568
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\acudpf.txt
  2⤵
  - Opens file in notepad (likely ransom note)
  PID:2980

C:\Users\Admin\AppData\Roaming\OneDrive.exe
C:\Users\Admin\AppData\Roaming\OneDrive.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2984

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x304 0x4c0
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4520

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2668

C:\Users\Admin\AppData\Roaming\OneDrive.exe
C:\Users\Admin\AppData\Roaming\OneDrive.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1880

C:\Users\Admin\AppData\Roaming\OneDrive.exe
C:\Users\Admin\AppData\Roaming\OneDrive.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3136

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\OneDrive.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
72903459f297d1561ed59e88f6266c39

SHA1
22275691405b29149354de4bf3a40bd7cef6f6de

SHA256
34dd19ebba6598d5f586b5c7ac30babf89d055b5f1a6e959129a39311fe4026b

SHA512
6c04ccf522b8b544de9da57b791e7f4a3ff1de200f8a641de106f75270759e04ba028fd6db7e3784bb0233ac3c1f92ec3473d703b9ac585d4851d277d12db10f

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
ba169f4dcbbf147fe78ef0061a95e83b

SHA1
92a571a6eef49fff666e0f62a3545bcd1cdcda67

SHA256
5ef1421e19fde4bc03cd825dd7d6c0e7863f85fd8f0aa4a4d4f8d555dc7606d1

SHA512
8d2e5e552210dcda684682538bc964fdd8a8ff5b24cc2cc8af813729f0202191f98eb42d38d2355df17ae620fe401aad6ceaedaed3b112fdacd32485a3a0c07c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cuwae1nz.s5h.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\acudpf.txt

Filesize
214B

MD5
247cebbc9e26786e644f31ee2c9996a9

SHA1
6f6291dcb84b7d3f815dd3d0f6f10bf65dbff393

SHA256
e3db06666e34f1e3c88335c89ec9ee260f56ea0841513360dbf69af1025d3f02

SHA512
4006d6ab51e006db44b9b353da812fe7b6074cbc9e6672a71514634486d5636014bbea404b91f5e52690334888d1fe283db47b7fc7740e284c2da561acc4809f

Download Submit
C:\Users\Admin\AppData\Local\Temp\fkbhne.exe

Filesize
171KB

MD5
0f4733702f7441130c76f92271e33d52

SHA1
962c64538ad4b11b0a57a269e726476eaf1e5cd4

SHA256
b96640cb2a36f9bbaf48fe4798091068b9f518af783236e759763f2386f6a157

SHA512
3718e10cdbb2dd1089a3cc4437c0884593ed0194953e0e0d6865b33475ffd2d8b9bcdffe5e8fade78eb4078b6777ca65618617a2563007b77998c273d85be0f5

Download Submit
C:\Users\Admin\AppData\Local\Temp\hoirka.exe

Filesize
2.4MB

MD5
dbdabe2151f6e17463dc60444833f0a6

SHA1
d90932ee95f30a6ff199d004b2a07cc752ad5ef8

SHA256
9ea8a71df4168bac4711eea5b66a10ad403a2907248292e7b8160522fba63972

SHA512
966a0cd72117e78ec2c2c183738fff0b85702550dc4acbce00ceda7863634d33c33fb4b73018ca30a7e9e5efe299f95935aecda5303def81ded29f86ed69d3be

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp3688.tmp

Filesize
100KB

MD5
1b942faa8e8b1008a8c3c1004ba57349

SHA1
cd99977f6c1819b12b33240b784ca816dfe2cb91

SHA256
555ccb7ecd9ae52a75135fdd81ab443a49d5785b0621ed6468d28c4234e46ccc

SHA512
5aee3d59478d41ddd5885c99b394c9c4983064e2b3528db1a3f7fc289662bced4f57d072517bbe7573c6d1789435e987ef1aa9cc91f372bcfd30bc016675fa43

Download Submit
memory/4044-14-0x00007FFBA8E00000-0x00007FFBA98C1000-memory.dmp

Filesize
10.8MB

Download
memory/4044-17-0x00007FFBA8E00000-0x00007FFBA98C1000-memory.dmp

Filesize
10.8MB

Download
memory/4044-13-0x00007FFBA8E00000-0x00007FFBA98C1000-memory.dmp

Filesize
10.8MB

Download
memory/4044-12-0x00007FFBA8E00000-0x00007FFBA98C1000-memory.dmp

Filesize
10.8MB

Download
memory/4044-2-0x00000255F12D0000-0x00000255F12F2000-memory.dmp

Filesize
136KB

Download
memory/5072-56-0x00007FFBA8E00000-0x00007FFBA98C1000-memory.dmp

Filesize
10.8MB

Download
memory/5072-70-0x000000001BCD0000-0x000000001BCDE000-memory.dmp

Filesize
56KB

Download
memory/5072-71-0x000000001E3F0000-0x000000001E510000-memory.dmp

Filesize
1.1MB

Download
memory/5072-113-0x000000001E510000-0x000000001E860000-memory.dmp

Filesize
3.3MB

Download
memory/5072-115-0x0000000002F80000-0x0000000002F8C000-memory.dmp

Filesize
48KB

Download
memory/5072-116-0x000000001DE50000-0x000000001DE8A000-memory.dmp

Filesize
232KB

Download
memory/5072-59-0x000000001BCB0000-0x000000001BCBE000-memory.dmp

Filesize
56KB

Download
memory/5072-121-0x000000001E360000-0x000000001E3EE000-memory.dmp

Filesize
568KB

Download
memory/5072-57-0x00007FFBA8E00000-0x00007FFBA98C1000-memory.dmp

Filesize
10.8MB

Download
memory/5072-0-0x00007FFBA8E03000-0x00007FFBA8E05000-memory.dmp

Filesize
8KB

Download
memory/5072-1-0x0000000000E50000-0x0000000000E80000-memory.dmp

Filesize
192KB

Download
memory/5072-135-0x00000000016E0000-0x00000000016EC000-memory.dmp

Filesize
48KB

Download