stormkitty | 262fb2e45f9b66956236f89f4cbeac22ee3d011832263a28ed7f632a22ae87d7

Reason

Machine shutdown

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 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4708-15-0x0000000000400000-0x0000000000412000-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
behavioral2/memory/4708-29-0x0000000007EC0000-0x0000000007FDE000-memory.dmp	family_stormkitty

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
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:

wscript.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation wscript.exe
Executes dropped EXE 2 IoCs

Processes:

GeUT.exeGeUT.exe

pid process

1580 GeUT.exe
4708 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

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	wscript.exe

pid	process
1580	GeUT.exe
4708	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-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WindowsUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\Service.exe"	GeUT.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows = "C:\\Users\\Admin\\AppData\\Local\\Temp\\GeUT.exe"	GeUT.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

GeUT.exe

description pid process target process

PID 1580 set thread context of 4708 1580 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
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4828 4708 WerFault.exe GeUT.exe

description	pid	process	target process
PID 1580 set thread context of 4708	1580	GeUT.exe	GeUT.exe

pid	pid_target	process	target process
4828	4708	WerFault.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

4708 GeUT.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

GeUT.exe

pid process

4708 GeUT.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

GeUT.exe

description pid process

Token: SeDebugPrivilege 4708 GeUT.exe
Token: SeDebugPrivilege 4708 GeUT.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

GeUT.exe

pid process

4708 GeUT.exe

pid	process
4708	GeUT.exe

pid	process
4708	GeUT.exe

description	pid	process
Token: SeDebugPrivilege	4708	GeUT.exe
Token: SeDebugPrivilege	4708	GeUT.exe

pid	process
4708	GeUT.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

wscript.exeGeUT.exe

description	pid	process	target process
PID 3492 wrote to memory of 1580	3492	wscript.exe	GeUT.exe
PID 3492 wrote to memory of 1580	3492	wscript.exe	GeUT.exe
PID 3492 wrote to memory of 1580	3492	wscript.exe	GeUT.exe
PID 1580 wrote to memory of 4708	1580	GeUT.exe	GeUT.exe
PID 1580 wrote to memory of 4708	1580	GeUT.exe	GeUT.exe
PID 1580 wrote to memory of 4708	1580	GeUT.exe	GeUT.exe
PID 1580 wrote to memory of 4708	1580	GeUT.exe	GeUT.exe
PID 1580 wrote to memory of 4708	1580	GeUT.exe	GeUT.exe
PID 1580 wrote to memory of 4708	1580	GeUT.exe	GeUT.exe
PID 1580 wrote to memory of 4708	1580	GeUT.exe	GeUT.exe
PID 1580 wrote to memory of 4708	1580	GeUT.exe	GeUT.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\cc.js
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3492
- C:\Users\Admin\AppData\Local\Temp\GeUT.exe
  "C:\Users\Admin\AppData\Local\Temp\GeUT.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1580
- - 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:4708
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 2016
      4⤵
      Program crash
      PID:4828

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4708 -ip 4708
1⤵
PID:1880

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

Query Registry

System Information Discovery

2

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

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Downloads

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

Filesize
58KB

MD5
7284765ca4d2f85c487796f437b01822

SHA1
f1e51f7e021629857369888a16e201fb464b7a61

SHA256
680ed672969ac8f7d533b74b27b152f4608ef9bba02f48935829455190b1e996

SHA512
17d1df0df786d7bfff9ee7618ea0cc442804b03bd6f35f13f8bbe6dd7ffa581c663d724989038a163d9b3b116eedef198ee084a87b6e799a4c97984304469b32

Download Submit
memory/1580-11-0x000000007522E000-0x000000007522F000-memory.dmp

Filesize
4KB

Download
memory/1580-12-0x0000000000DB0000-0x0000000000DC4000-memory.dmp

Filesize
80KB

Download
memory/1580-13-0x0000000005E50000-0x00000000063F4000-memory.dmp

Filesize
5.6MB

Download
memory/1580-14-0x00000000031A0000-0x00000000031A8000-memory.dmp

Filesize
32KB

Download
memory/1580-22-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/1580-19-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/4708-21-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/4708-20-0x00000000055A0000-0x000000000563C000-memory.dmp

Filesize
624KB

Download
memory/4708-15-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4708-23-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/4708-24-0x0000000006540000-0x00000000065D2000-memory.dmp

Filesize
584KB

Download
memory/4708-25-0x0000000006A60000-0x0000000006A6A000-memory.dmp

Filesize
40KB

Download
memory/4708-26-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/4708-27-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/4708-28-0x0000000007510000-0x0000000007576000-memory.dmp

Filesize
408KB

Download
memory/4708-29-0x0000000007EC0000-0x0000000007FDE000-memory.dmp

Filesize
1.1MB

Download
memory/4708-30-0x0000000008010000-0x0000000008364000-memory.dmp

Filesize
3.3MB

Download
memory/4708-31-0x00000000084F0000-0x000000000853C000-memory.dmp

Filesize
304KB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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