stormkitty | ac6c77f1af1db36464ec184588cab3db8f7ce1541d4bc5b91c2b814d5f36fc7f

General

Target

vm.exe
Size

63KB
MD5

d7d169c7173b67f881c5b04aed08c0eb
SHA1

916cac2d81230bf709ce6fe4894ec74b3fb91a33
SHA256

ac6c77f1af1db36464ec184588cab3db8f7ce1541d4bc5b91c2b814d5f36fc7f
SHA512

1116890516958b2772b3903cf50fa55169534b3a867c0644134d575d0bccd8dc31dd175c007874e50b121e34effab5676fd1282b70331941d0ce46284e7d8d47
SSDEEP

1536:C3UPUE/R41nfBEKU+bB2YFIrG6vUdb346tQD8O9r3gnst:CcSpEX+bBTiM9XJOBwst

Score

10^/10

stormkitty xworm discovery execution persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:17560

login-eye.gl.at.ply.gg:17560

147.185.221.27:17560

Attributes

Install_directory
%AppData%
install_file
XClient.exe

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.

resource	yara_rule
behavioral1/memory/2812-100-0x00000000010D0000-0x00000000010DE000-memory.dmp	disable_win_def

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/2812-1-0x0000000000850000-0x0000000000866000-memory.dmp	family_xworm
behavioral1/files/0x000e0000000240e9-58.dat	family_xworm

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

StormKitty payload 1 IoCs

resource	yara_rule
behavioral1/memory/2812-64-0x000000001DA80000-0x000000001DBA0000-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

pid	Process
4796	powershell.exe
5524	powershell.exe
4216	powershell.exe
4964	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1062200478-553497403-3857448183-1000\Control Panel\International\Geo\Nation	vm.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
4524	XClient.exe
1352	XClient.exe
4216	XClient.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

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-1-5-21-1062200478-553497403-3857448183-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	vm.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

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

pid	Process
3412	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4964	powershell.exe
4964	powershell.exe
4796	powershell.exe
4796	powershell.exe
5524	powershell.exe
5524	powershell.exe
4216	powershell.exe
4216	powershell.exe
2812	vm.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	2812	vm.exe
Token: SeDebugPrivilege	4964	powershell.exe
Token: SeDebugPrivilege	4796	powershell.exe
Token: SeDebugPrivilege	5524	powershell.exe
Token: SeDebugPrivilege	4216	powershell.exe
Token: SeDebugPrivilege	2812	vm.exe
Token: SeDebugPrivilege	4524	XClient.exe
Token: SeDebugPrivilege	1352	XClient.exe
Token: SeDebugPrivilege	4216	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2812	vm.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2812 wrote to memory of 4964	2812	vm.exe	94
PID 2812 wrote to memory of 4964	2812	vm.exe	94
PID 2812 wrote to memory of 4796	2812	vm.exe	97
PID 2812 wrote to memory of 4796	2812	vm.exe	97
PID 2812 wrote to memory of 5524	2812	vm.exe	100
PID 2812 wrote to memory of 5524	2812	vm.exe	100
PID 2812 wrote to memory of 4216	2812	vm.exe	102
PID 2812 wrote to memory of 4216	2812	vm.exe	102
PID 2812 wrote to memory of 3412	2812	vm.exe	105
PID 2812 wrote to memory of 3412	2812	vm.exe	105
PID 2760 wrote to memory of 4524	2760	cmd.exe	109
PID 2760 wrote to memory of 4524	2760	cmd.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\vm.exe
"C:\Users\Admin\AppData\Local\Temp\vm.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:2812
- 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\vm.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4964
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'vm.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4796
- 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:5524
- 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:4216
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3412

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Suspicious use of WriteProcessMemory
PID:2760
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:4524

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1352

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4216

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Browser Information Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\XClient.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
454c5c4b128d34aee2eb765f2a9c0aa9

SHA1
4b6e92db79d964f604fd6b261b3b19ede2aea8a5

SHA256
e1e65d1697b9ac59805f677cbc8eec623a899b75b1389354f0948ad3c1513772

SHA512
17b4e146ef4f8862d06ac975204cca9ef9b077420256df92d94409715b18efb4dc63879154c1c234317a169ac63024ed43b5cb52473882dc46c588af089f25d6

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

Filesize
944B

MD5
ada3bbf645850fada48785399a44c2e9

SHA1
0421c13b7bb2120e078e18a9d4f5118743c1c8bd

SHA256
cff75b20b3479f35242de2571318472607db1aa0a52db62c1c01a89bccb8491d

SHA512
6e0b2753850b1da38dddba4059a6ab2261a244e25bd078afc1bfb78743505dcc405caef08753134faa30bf9f4c8cd5d862405407aeb5c73ae7e86072da366c82

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

Filesize
944B

MD5
60945d1a2e48da37d4ce8d9c56b6845a

SHA1
83e80a6acbeb44b68b0da00b139471f428a9d6c1

SHA256
314b91c00997034d6e015f40230d90ebbf57de5dc938b62c1a214d591793dbe3

SHA512
5d068f1d6443e26ae3cad1c80f969e50e5860967b314153c4d3b6efd1cfa39f0907c6427bec7fa43db079f258b6357e4e9a1b0b1a36b1481d2049ea0e67909ed

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wvlowsig.b5a.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\XClient.exe

Filesize
63KB

MD5
d7d169c7173b67f881c5b04aed08c0eb

SHA1
916cac2d81230bf709ce6fe4894ec74b3fb91a33

SHA256
ac6c77f1af1db36464ec184588cab3db8f7ce1541d4bc5b91c2b814d5f36fc7f

SHA512
1116890516958b2772b3903cf50fa55169534b3a867c0644134d575d0bccd8dc31dd175c007874e50b121e34effab5676fd1282b70331941d0ce46284e7d8d47

Download Submit
memory/2812-56-0x00007FF9B00B0000-0x00007FF9B0B71000-memory.dmp

Filesize
10.8MB

Download
memory/2812-0-0x00007FF9B00B3000-0x00007FF9B00B5000-memory.dmp

Filesize
8KB

Download
memory/2812-61-0x00007FF9B00B0000-0x00007FF9B0B71000-memory.dmp

Filesize
10.8MB

Download
memory/2812-1-0x0000000000850000-0x0000000000866000-memory.dmp

Filesize
88KB

Download
memory/2812-64-0x000000001DA80000-0x000000001DBA0000-memory.dmp

Filesize
1.1MB

Download
memory/2812-100-0x00000000010D0000-0x00000000010DE000-memory.dmp

Filesize
56KB

Download
memory/4964-17-0x00007FF9B00B0000-0x00007FF9B0B71000-memory.dmp

Filesize
10.8MB

Download
memory/4964-14-0x00007FF9B00B0000-0x00007FF9B0B71000-memory.dmp

Filesize
10.8MB

Download
memory/4964-13-0x00007FF9B00B0000-0x00007FF9B0B71000-memory.dmp

Filesize
10.8MB

Download
memory/4964-12-0x00007FF9B00B0000-0x00007FF9B0B71000-memory.dmp

Filesize
10.8MB

Download
memory/4964-7-0x000001FB6C640000-0x000001FB6C662000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads