stormkitty | ff84d777db298c70e206a94f1a4a1a5d5536d8cd42eedbd50ffde364daa368a6

General

Target

ORDER24930067548.js
Size

7KB
MD5

8fbf57ab035ec7063b9522e5f30a75f7
SHA1

cd761463221ba82f46b2b28fe56a0e74588c64b9
SHA256

ff84d777db298c70e206a94f1a4a1a5d5536d8cd42eedbd50ffde364daa368a6
SHA512

6fb68c7241c130973c1332a2f1c23c76cdb4640d76e270e1a0538a83001fe7d2aa4397ccb34def80ce88a5050f36d7bbaad7700fd9efa666c26bb0e6c4bc71d6
SSDEEP

96:lUu0CRu5u37arzWruLprCRuzrN+uQ6rgxX4murNdgCRufZQL76mXHNuipdWwp5i6:lUycqnDtjfQxaWpK+l

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/2768-26-0x0000000000400000-0x0000000000412000-memory.dmp	family_xworm
behavioral1/memory/2768-25-0x0000000000400000-0x0000000000412000-memory.dmp	family_xworm
behavioral1/memory/2768-20-0x0000000000400000-0x0000000000412000-memory.dmp	family_xworm
behavioral1/memory/2768-18-0x0000000000400000-0x0000000000412000-memory.dmp	family_xworm
behavioral1/memory/2768-23-0x0000000000400000-0x0000000000412000-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/2768-28-0x0000000006BB0000-0x0000000006CCE000-memory.dmp	family_stormkitty

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Blocklisted process makes network request 1 IoCs

Processes:

wscript.exe

flow pid process

3 1992 wscript.exe
Executes dropped EXE 2 IoCs

Processes:

GeUT.exeGeUT.exe

pid process

2636 GeUT.exe
2768 GeUT.exe
Loads dropped DLL 1 IoCs

Processes:

GeUT.exe

pid process

2636 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

flow	pid	process
3	1992	wscript.exe

pid	process
2636	GeUT.exe
2768	GeUT.exe

pid	process
2636	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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows = "C:\\Users\\Admin\\AppData\\Local\\Temp\\GeUT.exe"	GeUT.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\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 2636 set thread context of 2768 2636 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 2636 set thread context of 2768	2636	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

2768 GeUT.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

GeUT.exe

pid process

2768 GeUT.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

GeUT.exe

description pid process

Token: SeDebugPrivilege 2768 GeUT.exe
Token: SeDebugPrivilege 2768 GeUT.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

GeUT.exe

pid process

2768 GeUT.exe

pid	process
2768	GeUT.exe

pid	process
2768	GeUT.exe

description	pid	process
Token: SeDebugPrivilege	2768	GeUT.exe
Token: SeDebugPrivilege	2768	GeUT.exe

pid	process
2768	GeUT.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

wscript.exeWScript.exeGeUT.exe

description	pid	process	target process
PID 1992 wrote to memory of 3036	1992	wscript.exe	WScript.exe
PID 1992 wrote to memory of 3036	1992	wscript.exe	WScript.exe
PID 1992 wrote to memory of 3036	1992	wscript.exe	WScript.exe
PID 3036 wrote to memory of 2636	3036	WScript.exe	GeUT.exe
PID 3036 wrote to memory of 2636	3036	WScript.exe	GeUT.exe
PID 3036 wrote to memory of 2636	3036	WScript.exe	GeUT.exe
PID 3036 wrote to memory of 2636	3036	WScript.exe	GeUT.exe
PID 2636 wrote to memory of 2768	2636	GeUT.exe	GeUT.exe
PID 2636 wrote to memory of 2768	2636	GeUT.exe	GeUT.exe
PID 2636 wrote to memory of 2768	2636	GeUT.exe	GeUT.exe
PID 2636 wrote to memory of 2768	2636	GeUT.exe	GeUT.exe
PID 2636 wrote to memory of 2768	2636	GeUT.exe	GeUT.exe
PID 2636 wrote to memory of 2768	2636	GeUT.exe	GeUT.exe
PID 2636 wrote to memory of 2768	2636	GeUT.exe	GeUT.exe
PID 2636 wrote to memory of 2768	2636	GeUT.exe	GeUT.exe
PID 2636 wrote to memory of 2768	2636	GeUT.exe	GeUT.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\ORDER24930067548.js
1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\OLWJMU.js"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3036
- - C:\Users\Admin\AppData\Local\Temp\GeUT.exe
    "C:\Users\Admin\AppData\Local\Temp\GeUT.exe"
    3⤵
    - 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:2636
  - - C:\Users\Admin\AppData\Local\Temp\GeUT.exe
      "C:\Users\Admin\AppData\Local\Temp\GeUT.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: AddClipboardFormatListener
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:2768

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

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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
C:\Users\Admin\AppData\Local\Temp\OLWJMU.js

Filesize
1.6MB

MD5
c63888086e1646654a1e162fde69c0ff

SHA1
8580dafbffe4d9b0d7e122127a455682ad2bd30e

SHA256
262fb2e45f9b66956236f89f4cbeac22ee3d011832263a28ed7f632a22ae87d7

SHA512
df2212775d03605673e6420ef74ec6c99fcdbf7e1dde3287c97c634553f66fd084e0f38549134ec9e0fb8cef4033be92013a430aa7955f0c691f7edff02fcb66

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memory/2636-11-0x0000000000D40000-0x0000000000D54000-memory.dmp

Filesize
80KB

Download
memory/2636-12-0x00000000002F0000-0x00000000002F8000-memory.dmp

Filesize
32KB

Download
memory/2768-25-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2768-26-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2768-14-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2768-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

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memory/2768-20-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2768-18-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2768-16-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2768-23-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2768-28-0x0000000006BB0000-0x0000000006CCE000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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