stormkitty | 262fb2e45f9b66956236f89f4cbeac22ee3d011832263a28ed7f632a22ae87d7

General

Target

cc.js
Size

1.6MB
MD5

c63888086e1646654a1e162fde69c0ff
SHA1

8580dafbffe4d9b0d7e122127a455682ad2bd30e
SHA256

262fb2e45f9b66956236f89f4cbeac22ee3d011832263a28ed7f632a22ae87d7
SHA512

df2212775d03605673e6420ef74ec6c99fcdbf7e1dde3287c97c634553f66fd084e0f38549134ec9e0fb8cef4033be92013a430aa7955f0c691f7edff02fcb66
SSDEEP

1536:Cz87aBaU8MENpImB8g0fCSjkXCR6cidzXXeF/LeKCO+RiboFN+LQ81fIgOz2ABPA:s87awfM2B85CSQSsXZXSeKGo7BvOiGI

Score

10^/10

stormkitty xworm discovery execution persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

as525795.duckdns.org:6980

194.37.97.150:6980

Mutex

wtYmVE2WY2XGhWlO

Attributes

install_file
adobe.exe

aes.plain

Signatures

Detect Xworm Payload 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2540-25-0x0000000000400000-0x0000000000412000-memory.dmp	family_xworm
behavioral1/memory/2540-23-0x0000000000400000-0x0000000000412000-memory.dmp	family_xworm
behavioral1/memory/2540-20-0x0000000000400000-0x0000000000412000-memory.dmp	family_xworm
behavioral1/memory/2540-16-0x0000000000400000-0x0000000000412000-memory.dmp	family_xworm
behavioral1/memory/2540-14-0x0000000000400000-0x0000000000412000-memory.dmp	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/2540-32-0x00000000069C0000-0x0000000006ADE000-memory.dmp	family_stormkitty

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Executes dropped EXE 2 IoCs

Processes:

GeUT.exeGeUT.exe

pid process

2492 GeUT.exe
2540 GeUT.exe
Loads dropped DLL 1 IoCs

Processes:

GeUT.exe

pid process

2492 GeUT.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

pid	process
2492	GeUT.exe
2540	GeUT.exe

pid	process
2492	GeUT.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

GeUT.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows = "C:\\Users\\Admin\\AppData\\Local\\Temp\\GeUT.exe"	GeUT.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\WindowsUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\Service.exe"	GeUT.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

GeUT.exe

description pid process target process

PID 2492 set thread context of 2540 2492 GeUT.exe GeUT.exe
Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	pid	process	target process
PID 2492 set thread context of 2540	2492	GeUT.exe	GeUT.exe

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

Processes:

GeUT.exeGeUT.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	GeUT.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	GeUT.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

GeUT.exe

pid process

2540 GeUT.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

GeUT.exe

pid process

2540 GeUT.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

GeUT.exe

description pid process

Token: SeDebugPrivilege 2540 GeUT.exe
Token: SeDebugPrivilege 2540 GeUT.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

GeUT.exe

pid process

2540 GeUT.exe

pid	process
2540	GeUT.exe

pid	process
2540	GeUT.exe

description	pid	process
Token: SeDebugPrivilege	2540	GeUT.exe
Token: SeDebugPrivilege	2540	GeUT.exe

pid	process
2540	GeUT.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

wscript.exeGeUT.exe

description	pid	process	target process
PID 1204 wrote to memory of 2492	1204	wscript.exe	GeUT.exe
PID 1204 wrote to memory of 2492	1204	wscript.exe	GeUT.exe
PID 1204 wrote to memory of 2492	1204	wscript.exe	GeUT.exe
PID 1204 wrote to memory of 2492	1204	wscript.exe	GeUT.exe
PID 2492 wrote to memory of 2540	2492	GeUT.exe	GeUT.exe
PID 2492 wrote to memory of 2540	2492	GeUT.exe	GeUT.exe
PID 2492 wrote to memory of 2540	2492	GeUT.exe	GeUT.exe
PID 2492 wrote to memory of 2540	2492	GeUT.exe	GeUT.exe
PID 2492 wrote to memory of 2540	2492	GeUT.exe	GeUT.exe
PID 2492 wrote to memory of 2540	2492	GeUT.exe	GeUT.exe
PID 2492 wrote to memory of 2540	2492	GeUT.exe	GeUT.exe
PID 2492 wrote to memory of 2540	2492	GeUT.exe	GeUT.exe
PID 2492 wrote to memory of 2540	2492	GeUT.exe	GeUT.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\cc.js
1⤵
- Suspicious use of WriteProcessMemory
PID:1204
- C:\Users\Admin\AppData\Local\Temp\GeUT.exe
  "C:\Users\Admin\AppData\Local\Temp\GeUT.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2492
- - C:\Users\Admin\AppData\Local\Temp\GeUT.exe
    "C:\Users\Admin\AppData\Local\Temp\GeUT.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: AddClipboardFormatListener
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2540

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

JavaScript

1

T1059.007

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

1

T1217

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\GeUT.exe

Filesize
58KB

MD5
7284765ca4d2f85c487796f437b01822

SHA1
f1e51f7e021629857369888a16e201fb464b7a61

SHA256
680ed672969ac8f7d533b74b27b152f4608ef9bba02f48935829455190b1e996

SHA512
17d1df0df786d7bfff9ee7618ea0cc442804b03bd6f35f13f8bbe6dd7ffa581c663d724989038a163d9b3b116eedef198ee084a87b6e799a4c97984304469b32

Download Submit
memory/2492-27-0x00000000744C0000-0x0000000074BAE000-memory.dmp

Filesize
6.9MB

Download
memory/2492-6-0x00000000744CE000-0x00000000744CF000-memory.dmp

Filesize
4KB

Download
memory/2492-7-0x0000000000C60000-0x0000000000C74000-memory.dmp

Filesize
80KB

Download
memory/2492-8-0x00000000001F0000-0x00000000001F8000-memory.dmp

Filesize
32KB

Download
memory/2540-10-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2540-23-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2540-20-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2540-18-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2540-16-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2540-14-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2540-12-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2540-25-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2540-28-0x00000000744C0000-0x0000000074BAE000-memory.dmp

Filesize
6.9MB

Download
memory/2540-29-0x00000000744C0000-0x0000000074BAE000-memory.dmp

Filesize
6.9MB

Download
memory/2540-30-0x00000000744C0000-0x0000000074BAE000-memory.dmp

Filesize
6.9MB

Download
memory/2540-31-0x00000000744C0000-0x0000000074BAE000-memory.dmp

Filesize
6.9MB

Download
memory/2540-32-0x00000000069C0000-0x0000000006ADE000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads