stormkitty | 6b0c02766fe5cce2ba045b22a4d22e1be715f36de87bcf37aef6819c9c2acc6d

Analysis

max time kernel
930s
max time network
931s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05-08-2024 17:17

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General

Target

XClient2.exe
Size

82KB
MD5

04bfb56e7cfe27e2fb1dc4be72b705f5
SHA1

324e46eb02a4561536d9f5775e84592b85fd0f22
SHA256

6b0c02766fe5cce2ba045b22a4d22e1be715f36de87bcf37aef6819c9c2acc6d
SHA512

c80df99774f899f48b0150a32b86ba7c60337c99bbe6f60f57c8a7963fb50ce7c2259dd171353257abe21bce94e2ed33b2860ba60e0cc677519defc4e08e2015
SSDEEP

1536:cajDKkkG+Ng/rhqNGqdQAbmnGTDxE6S+Fj1ypOFEgLAMB/ddK:Rd1+ejloQAbmGTtypOKuBDK

Score

10^/10

stormkitty xworm credential_access discovery execution persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xworm

127.0.0.1:48534

localhost:48534

domain-vote.gl.at.ply.gg:48534

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/784-0-0x0000000000B20000-0x0000000000B3A000-memory.dmp	family_xworm

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

StormKitty payload 1 IoCs

resource	yara_rule
behavioral1/memory/784-116-0x000000001C220000-0x000000001C340000-memory.dmp	family_stormkitty

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

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

pid	Process
3212	powershell.exe
1064	powershell.exe
1596	powershell.exe
3568	powershell.exe

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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	XClient2.exe
Key value queried	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	neguze.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	XClient2.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	XClient2.exe

Executes dropped EXE 1 IoCs

pid	Process
4496	neguze.exe

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	XClient2.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\E:	WScript.exe
File opened (read-only)	\??\K:	WScript.exe
File opened (read-only)	\??\M:	WScript.exe
File opened (read-only)	\??\N:	WScript.exe
File opened (read-only)	\??\O:	WScript.exe
File opened (read-only)	\??\Q:	WScript.exe
File opened (read-only)	\??\R:	WScript.exe
File opened (read-only)	\??\Y:	WScript.exe
File opened (read-only)	\??\S:	WScript.exe
File opened (read-only)	\??\W:	WScript.exe
File opened (read-only)	\??\B:	WScript.exe
File opened (read-only)	\??\G:	WScript.exe
File opened (read-only)	\??\H:	WScript.exe
File opened (read-only)	\??\I:	WScript.exe
File opened (read-only)	\??\J:	WScript.exe
File opened (read-only)	\??\P:	WScript.exe
File opened (read-only)	\??\X:	WScript.exe
File opened (read-only)	\??\Z:	WScript.exe
File opened (read-only)	\??\A:	WScript.exe
File opened (read-only)	\??\L:	WScript.exe
File opened (read-only)	\??\T:	WScript.exe
File opened (read-only)	\??\U:	WScript.exe
File opened (read-only)	\??\V:	WScript.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
14	ip-api.com

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

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	neguze.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000_Classes\Local Settings	neguze.exe
Key created	\REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-786284298-625481688-3210388970-1000\{F8DFD03F-7F5B-4642-A90A-EE6CC1DFED42}	WScript.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3568	powershell.exe
3568	powershell.exe
3212	powershell.exe
3212	powershell.exe
1064	powershell.exe
1064	powershell.exe
1596	powershell.exe
1596	powershell.exe
784	XClient2.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	784	XClient2.exe
Token: SeDebugPrivilege	3568	powershell.exe
Token: SeDebugPrivilege	3212	powershell.exe
Token: SeDebugPrivilege	1064	powershell.exe
Token: SeDebugPrivilege	1596	powershell.exe
Token: SeDebugPrivilege	784	XClient2.exe
Token: SeShutdownPrivilege	3780	WScript.exe
Token: SeCreatePagefilePrivilege	3780	WScript.exe
Token: 33	4356	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	4356	AUDIODG.EXE
Token: SeShutdownPrivilege	3780	WScript.exe
Token: SeCreatePagefilePrivilege	3780	WScript.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
784	XClient2.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 784 wrote to memory of 3568	784	XClient2.exe	88
PID 784 wrote to memory of 3568	784	XClient2.exe	88
PID 784 wrote to memory of 3212	784	XClient2.exe	90
PID 784 wrote to memory of 3212	784	XClient2.exe	90
PID 784 wrote to memory of 1064	784	XClient2.exe	92
PID 784 wrote to memory of 1064	784	XClient2.exe	92
PID 784 wrote to memory of 1596	784	XClient2.exe	94
PID 784 wrote to memory of 1596	784	XClient2.exe	94
PID 784 wrote to memory of 4496	784	XClient2.exe	98
PID 784 wrote to memory of 4496	784	XClient2.exe	98
PID 784 wrote to memory of 4496	784	XClient2.exe	98
PID 4496 wrote to memory of 3780	4496	neguze.exe	99
PID 4496 wrote to memory of 3780	4496	neguze.exe	99
PID 4496 wrote to memory of 3780	4496	neguze.exe	99

C:\Users\Admin\AppData\Local\Temp\XClient2.exe
"C:\Users\Admin\AppData\Local\Temp\XClient2.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:784
- 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\XClient2.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3568
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient2.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3212
- 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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1064
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1596
- C:\Users\Admin\AppData\Local\Temp\neguze.exe
  "C:\Users\Admin\AppData\Local\Temp\neguze.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:4496
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\RarSFX0\play.vbs"
    3⤵
    - Enumerates connected drives
    - System Location Discovery: System Language Discovery
    - Modifies registry class
    - Suspicious use of AdjustPrivilegeToken
    PID:3780

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x4a8 0x52c
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4356

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

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\Media Player\CurrentDatabase_400.wmdb

Filesize
256KB

MD5
17f05a6d55da02a6bda75912e57a1592

SHA1
d910418023cf683f4d5a01557538bce4d135c1bd

SHA256
d5bd9f078332968f9b83076fd87ad0b078fb18527b8b757b610fe330f6d6dd24

SHA512
cc4becaa81cb685d3c30d633f1ef8befc4088e0842e1aa1a7f9bb4bf454fd52be65c953da120a94052fac6ee3b990fabf101c3aa699ebe749ee51be63474d393

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows Media\12.0\WMSDKNS.XML.bak

Filesize
9KB

MD5
7050d5ae8acfbe560fa11073fef8185d

SHA1
5bc38e77ff06785fe0aec5a345c4ccd15752560e

SHA256
cb87767c4a384c24e4a0f88455f59101b1ae7b4fb8de8a5adb4136c5f7ee545b

SHA512
a7a295ac8921bb3dde58d4bcde9372ed59def61d4b7699057274960fa8c1d1a1daff834a93f7a0698e9e5c16db43af05e9fd2d6d7c9232f7d26ffcff5fc5900b

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

Filesize
944B

MD5
2e907f77659a6601fcc408274894da2e

SHA1
9f5b72abef1cd7145bf37547cdb1b9254b4efe9d

SHA256
385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233

SHA512
34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721

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

Filesize
944B

MD5
cae60f0ddddac635da71bba775a2c5b4

SHA1
386f1a036af61345a7d303d45f5230e2df817477

SHA256
b2dd636b7b0d3bfe44cef5e1175828b1fa7bd84d5563f54342944156ba996c16

SHA512
28ed8a8bc132ef56971cfd7b517b17cdb74a7f8c247ef6bff232996210075e06aa58a415825a1e038cfb547ad3dc6882bf1ca1b68c5b360ef0512a1440850253

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

Filesize
944B

MD5
eb1ad317bd25b55b2bbdce8a28a74a94

SHA1
98a3978be4d10d62e7411946474579ee5bdc5ea6

SHA256
9e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98

SHA512
d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0

Download Submit
C:\Users\Admin\AppData\Local\Temp\RarSFX0\SSS.mp3

Filesize
646KB

MD5
cfc09a9a46f1910b13200df435483c6f

SHA1
cdd3cb2b197728d7445d478378e6140185cbaefc

SHA256
4168c7692e7c8c02fe9df4752422d217f1a92247fcd90114ac419a58bbdf784f

SHA512
34dc498968ba7bc43cac96d0e6490a2b2d0766c38824982c1dd04ee299baac969635c2fa4c7b962e5aa85786f40641fdec300c488627c898929341c02fc3a919

Download Submit
C:\Users\Admin\AppData\Local\Temp\RarSFX0\play.vbs

Filesize
234B

MD5
7cbcceb16259fc7371af338c0e44ed3a

SHA1
b260e12cdc0079b4773ed93de0fe961062ee1549

SHA256
52d886707355893ed4879c4865a3b135e1d9c870478bc0be273eb5259f9d9408

SHA512
d528946ba9ebf5943ba83f62c8221f34bb027a2391f3cc65f4dc9473575a08eb3906e57f9c9769c8ee5586e12f9fee2f9eabb4b69db70bb30c7f832407c96aeb

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_x5xasrj1.z22.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
751KB

MD5
6d2d42f4cf64f23def041b16c4a591d1

SHA1
06c9da003fcce27caf71ea4cd23f3897a4e8c184

SHA256
9abe739d093133b3aaf5512dd0b6799ee2bc4b108466622b982d5233446aee6d

SHA512
926195935e5b001f60dd26c1b4f36c89723a710ee8e4b6bf5a1c9db5918969b1aabbaa7d359a06e6cec84267afd2c1f315a30bfb46d1944b9986dc42dc099bd9

Download Submit
memory/784-157-0x00007FFACF010000-0x00007FFACFAD1000-memory.dmp

Filesize
10.8MB

Download
memory/784-0-0x0000000000B20000-0x0000000000B3A000-memory.dmp

Filesize
104KB

Download
memory/784-56-0x00007FFACF013000-0x00007FFACF015000-memory.dmp

Filesize
8KB

Download
memory/784-57-0x00007FFACF010000-0x00007FFACFAD1000-memory.dmp

Filesize
10.8MB

Download
memory/784-58-0x0000000001400000-0x000000000140C000-memory.dmp

Filesize
48KB

Download
memory/784-115-0x000000001BB50000-0x000000001BB5E000-memory.dmp

Filesize
56KB

Download
memory/784-116-0x000000001C220000-0x000000001C340000-memory.dmp

Filesize
1.1MB

Download
memory/784-2-0x00007FFACF010000-0x00007FFACFAD1000-memory.dmp

Filesize
10.8MB

Download
memory/784-1-0x00007FFACF013000-0x00007FFACF015000-memory.dmp

Filesize
8KB

Download
memory/3568-17-0x00007FFACF010000-0x00007FFACFAD1000-memory.dmp

Filesize
10.8MB

Download
memory/3568-14-0x00007FFACF010000-0x00007FFACFAD1000-memory.dmp

Filesize
10.8MB

Download
memory/3568-13-0x00007FFACF010000-0x00007FFACFAD1000-memory.dmp

Filesize
10.8MB

Download
memory/3568-12-0x0000020562890000-0x00000205628B2000-memory.dmp

Filesize
136KB

Download
memory/3780-88-0x0000000005850000-0x0000000005860000-memory.dmp

Filesize
64KB

Download
memory/3780-87-0x0000000005850000-0x0000000005860000-memory.dmp

Filesize
64KB

Download
memory/3780-89-0x0000000005850000-0x0000000005860000-memory.dmp

Filesize
64KB

Download
memory/3780-91-0x0000000005850000-0x0000000005860000-memory.dmp

Filesize
64KB

Download
memory/3780-90-0x0000000005850000-0x0000000005860000-memory.dmp

Filesize
64KB

Download
memory/3780-86-0x0000000005850000-0x0000000005860000-memory.dmp

Filesize
64KB

Download
memory/3780-104-0x0000000005850000-0x0000000005860000-memory.dmp

Filesize
64KB

Download