stormkitty | 42c98e8a72be5aaa67a675393d8e6a8702017de6154307a6dc3950f8dee992ff

Analysis

max time kernel
93s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
18-02-2025 20:55

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General

Target

builder - Copy/builder/stub.exe
Size

107KB
MD5

eaa8de841b67c55c023f66729791a0d7
SHA1

1c6ebfb9a9bfa35dfd698876433ae521513fca81
SHA256

1eb1ec2ae87071342c03080d209fd4983c793204a88772187c7f764c4f4118fe
SHA512

6fff0b607ed1d29344acdd85b7d4b5e64cfc03b3ad9fc9bb9fca64ccf9021d527b78f6417fd811385c37cd5905b56e03793175c37f84878ad483d0edaede92ac
SSDEEP

3072:X2ZYhX5B/BrwRlilIEtBeQ7sR9bGpxRBU6pY2z:fhX5e4l5e8u9bY

Score

10^/10

stormkitty stealer

Malware Config

Signatures

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

StormKitty payload 1 IoCs

resource	yara_rule
behavioral14/memory/3580-1-0x00000000004B0000-0x00000000004D0000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-100612193-3312047696-905266872-1000\Control Panel\International\Geo\Nation	stub.exe

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

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4556	timeout.exe

Kills process with taskkill 1 IoCs

defense_evasion

pid	Process
796	taskkill.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3580	stub.exe
Token: SeDebugPrivilege	796	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3580 wrote to memory of 2100	3580	stub.exe	88
PID 3580 wrote to memory of 2100	3580	stub.exe	88
PID 2100 wrote to memory of 2860	2100	cmd.exe	90
PID 2100 wrote to memory of 2860	2100	cmd.exe	90
PID 2100 wrote to memory of 796	2100	cmd.exe	91
PID 2100 wrote to memory of 796	2100	cmd.exe	91
PID 2100 wrote to memory of 4556	2100	cmd.exe	92
PID 2100 wrote to memory of 4556	2100	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\builder - Copy\builder\stub.exe
"C:\Users\Admin\AppData\Local\Temp\builder - Copy\builder\stub.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3580
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmpB98C.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmpB98C.tmp.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2100
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:2860
- - C:\Windows\system32\taskkill.exe
    TaskKill /F /IM 3580
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:796
- - C:\Windows\system32\timeout.exe
    Timeout /T 2 /Nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:4556

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpB98C.tmp.bat

Filesize
134B

MD5
d4447ea5eb21b214c13151141a6223c5

SHA1
5e77bc9fbf723f47e71fcd35cf0895cb23f5d4dc

SHA256
1170cc2d8b48ebe2053421fd926a7038a10bffd581db2097e9b2b22e0d10fa81

SHA512
7d689e129894460d8348d0eb94b6eaecce38a6464b3b86fe2fdb6b0469b5c38fe58415656a10ae91374e5e2ae81189f3c87a543d1e5d8cf216bc39bb8b048051

Download Submit
memory/3580-0-0x00007FFC3DE33000-0x00007FFC3DE35000-memory.dmp

Filesize
8KB

Download
memory/3580-1-0x00000000004B0000-0x00000000004D0000-memory.dmp

Filesize
128KB

Download
memory/3580-2-0x00007FFC3DE30000-0x00007FFC3E8F1000-memory.dmp

Filesize
10.8MB

Download
memory/3580-5-0x00007FFC3DE30000-0x00007FFC3E8F1000-memory.dmp

Filesize
10.8MB

Download