stormkitty | 6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993

Analysis

max time kernel
299s
max time network
292s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09-09-2024 05:03

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General

Target

6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe
Size

94KB
MD5

db5717fd494495eea3c8f7d4ab29d6b0
SHA1

39ba82340121d9b08e9cf3d4ba6dfcb12eb6c559
SHA256

6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993
SHA512

b16c7bffc8418a0349e5189d61439df325d2ab33a42c720380a305decde00348f83d96b6c263a95dc253128eb0e47b1a3dc96f8f115da868ff9227b9a40882de
SSDEEP

1536:1z8H8uTSHKoKlDeE0C3shB1ueVby8EXEFA4Xib6TWcgMfAOISZsw61EmS:+c/q/l6EP3mvuwby8EXuhX6cgXOI0stE

Score

10^/10

stormkitty xworm execution persistence rat stealer trojan

Malware Config

Extracted

Family

xworm

exonic-hacks.com:1920

Attributes

Install_directory
%Userprofile%
install_file
Windows.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/2516-36-0x0000000001F70000-0x0000000001F7E000-memory.dmp	disable_win_def

Detect Xworm Payload 7 IoCs

resource	yara_rule
behavioral1/memory/2516-1-0x0000000000010000-0x000000000002E000-memory.dmp	family_xworm
behavioral1/files/0x0006000000004ed7-46.dat	family_xworm
behavioral1/memory/1628-48-0x00000000003E0000-0x00000000003FE000-memory.dmp	family_xworm
behavioral1/memory/2008-51-0x00000000008B0000-0x00000000008CE000-memory.dmp	family_xworm
behavioral1/memory/2716-53-0x0000000000230000-0x000000000024E000-memory.dmp	family_xworm
behavioral1/memory/2164-55-0x0000000001200000-0x000000000121E000-memory.dmp	family_xworm
behavioral1/memory/776-57-0x0000000000050000-0x000000000006E000-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/2516-35-0x000000001DD90000-0x000000001DEAE000-memory.dmp	family_stormkitty

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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
2748	powershell.exe
2336	powershell.exe
1648	powershell.exe
2712	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnk	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnk	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe

Executes dropped EXE 5 IoCs

pid	Process
1628	Windows.exe
2008	Windows.exe
2716	Windows.exe
2164	Windows.exe
776	Windows.exe

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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows = "C:\\Users\\Admin\\Windows.exe"	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.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
4	ip-api.com

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
2204	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2516	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2748	powershell.exe
2336	powershell.exe
1648	powershell.exe
2712	powershell.exe
2516	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

description	pid	Process
Token: SeDebugPrivilege	2516	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe
Token: SeDebugPrivilege	2748	powershell.exe
Token: SeDebugPrivilege	2336	powershell.exe
Token: SeDebugPrivilege	1648	powershell.exe
Token: SeDebugPrivilege	2712	powershell.exe
Token: SeDebugPrivilege	2516	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe
Token: SeDebugPrivilege	1628	Windows.exe
Token: SeDebugPrivilege	2008	Windows.exe
Token: SeDebugPrivilege	2716	Windows.exe
Token: SeDebugPrivilege	2164	Windows.exe
Token: SeDebugPrivilege	776	Windows.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2516	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 2748	2516	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe	32
PID 2516 wrote to memory of 2748	2516	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe	32
PID 2516 wrote to memory of 2748	2516	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe	32
PID 2516 wrote to memory of 2336	2516	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe	34
PID 2516 wrote to memory of 2336	2516	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe	34
PID 2516 wrote to memory of 2336	2516	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe	34
PID 2516 wrote to memory of 1648	2516	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe	36
PID 2516 wrote to memory of 1648	2516	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe	36
PID 2516 wrote to memory of 1648	2516	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe	36
PID 2516 wrote to memory of 2712	2516	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe	38
PID 2516 wrote to memory of 2712	2516	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe	38
PID 2516 wrote to memory of 2712	2516	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe	38
PID 2516 wrote to memory of 2204	2516	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe	40
PID 2516 wrote to memory of 2204	2516	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe	40
PID 2516 wrote to memory of 2204	2516	6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe	40
PID 1288 wrote to memory of 1628	1288	taskeng.exe	43
PID 1288 wrote to memory of 1628	1288	taskeng.exe	43
PID 1288 wrote to memory of 1628	1288	taskeng.exe	43
PID 1288 wrote to memory of 2008	1288	taskeng.exe	44
PID 1288 wrote to memory of 2008	1288	taskeng.exe	44
PID 1288 wrote to memory of 2008	1288	taskeng.exe	44
PID 1288 wrote to memory of 2716	1288	taskeng.exe	45
PID 1288 wrote to memory of 2716	1288	taskeng.exe	45
PID 1288 wrote to memory of 2716	1288	taskeng.exe	45
PID 1288 wrote to memory of 2164	1288	taskeng.exe	46
PID 1288 wrote to memory of 2164	1288	taskeng.exe	46
PID 1288 wrote to memory of 2164	1288	taskeng.exe	46
PID 1288 wrote to memory of 776	1288	taskeng.exe	47
PID 1288 wrote to memory of 776	1288	taskeng.exe	47
PID 1288 wrote to memory of 776	1288	taskeng.exe	47

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\6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe
"C:\Users\Admin\AppData\Local\Temp\6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2516
- 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\6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2748
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2336
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\Windows.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1648
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Windows.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2712
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Windows" /tr "C:\Users\Admin\Windows.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2204

C:\Windows\system32\taskeng.exe
taskeng.exe {BF305539-496A-49F8-9327-7A7A51759543} S-1-5-21-3533259084-2542256011-65585152-1000:XPAJOTIY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1288
- C:\Users\Admin\Windows.exe
  C:\Users\Admin\Windows.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1628
- C:\Users\Admin\Windows.exe
  C:\Users\Admin\Windows.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2008
- C:\Users\Admin\Windows.exe
  C:\Users\Admin\Windows.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2716
- C:\Users\Admin\Windows.exe
  C:\Users\Admin\Windows.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2164
- C:\Users\Admin\Windows.exe
  C:\Users\Admin\Windows.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:776

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

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
e6d5c100bf7108d35dc5438dff43c460

SHA1
64b5a941990773078d43a887f0b64da74c81ed4b

SHA256
a23ca845d6bf42af0b958fd578f0c7899d197fc9dc2b9fa7b17018662443116e

SHA512
581a6639640a5facd04e28ba9b65788a6c932e0b30e0c04d068376b6d999c5323cfe996b99d200e0162da8fbf38c3ed56591e788f03fcbcffd77cec147c9d835

Download Submit
C:\Users\Admin\Windows.exe

Filesize
94KB

MD5
db5717fd494495eea3c8f7d4ab29d6b0

SHA1
39ba82340121d9b08e9cf3d4ba6dfcb12eb6c559

SHA256
6b59309ab12f1859a94fb2ce1c98639b2a538e6e098ffac127e45c29733bd993

SHA512
b16c7bffc8418a0349e5189d61439df325d2ab33a42c720380a305decde00348f83d96b6c263a95dc253128eb0e47b1a3dc96f8f115da868ff9227b9a40882de

Download Submit
memory/776-57-0x0000000000050000-0x000000000006E000-memory.dmp

Filesize
120KB

Download
memory/1628-48-0x00000000003E0000-0x00000000003FE000-memory.dmp

Filesize
120KB

Download
memory/2008-51-0x00000000008B0000-0x00000000008CE000-memory.dmp

Filesize
120KB

Download
memory/2164-55-0x0000000001200000-0x000000000121E000-memory.dmp

Filesize
120KB

Download
memory/2336-17-0x0000000002A60000-0x0000000002A68000-memory.dmp

Filesize
32KB

Download
memory/2336-16-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2516-37-0x000000001E160000-0x000000001E442000-memory.dmp

Filesize
2.9MB

Download
memory/2516-41-0x000000001BB90000-0x000000001BC36000-memory.dmp

Filesize
664KB

Download
memory/2516-34-0x000007FEF5DE0000-0x000007FEF67CC000-memory.dmp

Filesize
9.9MB

Download
memory/2516-35-0x000000001DD90000-0x000000001DEAE000-memory.dmp

Filesize
1.1MB

Download
memory/2516-36-0x0000000001F70000-0x0000000001F7E000-memory.dmp

Filesize
56KB

Download
memory/2516-1-0x0000000000010000-0x000000000002E000-memory.dmp

Filesize
120KB

Download
memory/2516-38-0x0000000001F80000-0x0000000001F9C000-memory.dmp

Filesize
112KB

Download
memory/2516-39-0x000000001ACE0000-0x000000001AD28000-memory.dmp

Filesize
288KB

Download
memory/2516-40-0x0000000002100000-0x0000000002108000-memory.dmp

Filesize
32KB

Download
memory/2516-0-0x000007FEF5DE3000-0x000007FEF5DE4000-memory.dmp

Filesize
4KB

Download
memory/2516-42-0x000000001B290000-0x000000001B2C4000-memory.dmp

Filesize
208KB

Download
memory/2516-43-0x000000001B360000-0x000000001B3AA000-memory.dmp

Filesize
296KB

Download
memory/2516-44-0x0000000002310000-0x0000000002326000-memory.dmp

Filesize
88KB

Download
memory/2516-2-0x000007FEF5DE3000-0x000007FEF5DE4000-memory.dmp

Filesize
4KB

Download
memory/2516-3-0x000007FEF5DE0000-0x000007FEF67CC000-memory.dmp

Filesize
9.9MB

Download
memory/2716-53-0x0000000000230000-0x000000000024E000-memory.dmp

Filesize
120KB

Download
memory/2748-8-0x00000000029A0000-0x0000000002A20000-memory.dmp

Filesize
512KB

Download
memory/2748-9-0x000000001B690000-0x000000001B972000-memory.dmp

Filesize
2.9MB

Download
memory/2748-10-0x0000000002870000-0x0000000002878000-memory.dmp

Filesize
32KB

Download