stormkitty | a4fad46b0ab068cb7e5de1f3e970101ff2501c5b0608ada10442bcf891c5f8bb

Resubmissions

30-01-2023 01:35

230130-bzv4qaeb5w 10

30-01-2023 01:30

230130-bws5yscf45 10

Analysis

max time kernel
226s
max time network
252s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
30-01-2023 01:35

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General

Target

BlitzedGrabber_.exe
Size

1.4MB
MD5

ea795ffff4c8f24a343102ab0d86c010
SHA1

0a0dd7abf548567caccc32fd06a6f45790ffd1d4
SHA256

a4fad46b0ab068cb7e5de1f3e970101ff2501c5b0608ada10442bcf891c5f8bb
SHA512

b3f8428226e3e23febdd5f6b08f4a788cb62cc1795627b39660fafdbb810c4c7239c29f8833dbc3431a0559591958d0b2f68f36b3be065bdaa122f55666c8ae3
SSDEEP

24576:/40iMngrdePNzQ0ZIxNXaV9x4IUgs36BUI2So5+jnzFYCaGApu8:AsgReFs0ZM0T+Sk6BU7HIFY7G98

Score

10^/10

stormkitty persistence spyware stealer

Malware Config

Signatures

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

StormKitty payload 1 IoCs

Processes:

resource	yara_rule
behavioral3/memory/2420-132-0x0000000000880000-0x00000000009E2000-memory.dmp	family_stormkitty

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

BlitzedGrabber_.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\FykXC = "C:\\Users\\Admin\\AppData\\Local\\Temp\\BlitzedGrabber_.exe"	BlitzedGrabber_.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

4 checkip.dyndns.org
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

BlitzedGrabber_.exe

description pid process

Token: SeDebugPrivilege 2420 BlitzedGrabber_.exe

flow	ioc
4	checkip.dyndns.org

description	pid	process
Token: SeDebugPrivilege	2420	BlitzedGrabber_.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

BlitzedGrabber_.execmd.execmd.exe

description	pid	process	target process
PID 2420 wrote to memory of 3208	2420	BlitzedGrabber_.exe	cmd.exe
PID 2420 wrote to memory of 3208	2420	BlitzedGrabber_.exe	cmd.exe
PID 3208 wrote to memory of 4564	3208	cmd.exe	chcp.com
PID 3208 wrote to memory of 4564	3208	cmd.exe	chcp.com
PID 3208 wrote to memory of 5020	3208	cmd.exe	netsh.exe
PID 3208 wrote to memory of 5020	3208	cmd.exe	netsh.exe
PID 3208 wrote to memory of 1768	3208	cmd.exe	findstr.exe
PID 3208 wrote to memory of 1768	3208	cmd.exe	findstr.exe
PID 2420 wrote to memory of 2612	2420	BlitzedGrabber_.exe	cmd.exe
PID 2420 wrote to memory of 2612	2420	BlitzedGrabber_.exe	cmd.exe
PID 2612 wrote to memory of 2260	2612	cmd.exe	chcp.com
PID 2612 wrote to memory of 2260	2612	cmd.exe	chcp.com
PID 2612 wrote to memory of 3668	2612	cmd.exe	netsh.exe
PID 2612 wrote to memory of 3668	2612	cmd.exe	netsh.exe
PID 2612 wrote to memory of 1632	2612	cmd.exe	findstr.exe
PID 2612 wrote to memory of 1632	2612	cmd.exe	findstr.exe

C:\Users\Admin\AppData\Local\Temp\BlitzedGrabber_.exe
"C:\Users\Admin\AppData\Local\Temp\BlitzedGrabber_.exe"
1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2420

C:\Windows\SYSTEM32\cmd.exe
"cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
2⤵
- Suspicious use of WriteProcessMemory
PID:3208

C:\Windows\system32\chcp.com
chcp 65001
3⤵
PID:4564

C:\Windows\system32\netsh.exe
netsh wlan show profile
3⤵
PID:5020

C:\Windows\system32\findstr.exe
findstr All
3⤵
PID:1768

C:\Windows\SYSTEM32\cmd.exe
"cmd.exe" /C chcp 65001 && netsh wlan show profile name=65001 key=clear | findstr Key
2⤵
- Suspicious use of WriteProcessMemory
PID:2612

C:\Windows\system32\chcp.com
chcp 65001
3⤵
PID:2260

C:\Windows\system32\findstr.exe
findstr Key
3⤵
PID:1632

C:\Windows\system32\netsh.exe
netsh wlan show profile name=65001 key=clear
3⤵
PID:3668

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:3340

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Web Service

T1102

Impact

Replay Monitor

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Downloads

memory/1632-143-0x0000000000000000-mapping.dmp

Download
memory/1768-139-0x0000000000000000-mapping.dmp

Download
memory/2260-141-0x0000000000000000-mapping.dmp

Download
memory/2420-144-0x0000000002A90000-0x0000000002AA2000-memory.dmp

Filesize
72KB

Download
memory/2420-133-0x000000001B530000-0x000000001B54A000-memory.dmp

Filesize
104KB

Download
memory/2420-134-0x00007FF84FDF0000-0x00007FF8508B1000-memory.dmp

Filesize
10.8MB

Download
memory/2420-135-0x00007FF84FDF0000-0x00007FF8508B1000-memory.dmp

Filesize
10.8MB

Download
memory/2420-146-0x00007FF84FDF0000-0x00007FF8508B1000-memory.dmp

Filesize
10.8MB

Download
memory/2420-145-0x000000001DA50000-0x000000001DA8C000-memory.dmp

Filesize
240KB

Download
memory/2420-132-0x0000000000880000-0x00000000009E2000-memory.dmp

Filesize
1.4MB

Download
memory/2612-140-0x0000000000000000-mapping.dmp

Download
memory/3208-136-0x0000000000000000-mapping.dmp

Download
memory/3668-142-0x0000000000000000-mapping.dmp

Download
memory/4564-137-0x0000000000000000-mapping.dmp

Download
memory/5020-138-0x0000000000000000-mapping.dmp

Download