stormkitty | 39b268b299acc7944e2c3081c586b84003935761f22a98dbe2086181d4e697c7

Analysis

max time kernel
102s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
31/03/2025, 02:36

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

builder/builder/stub/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
behavioral12/memory/4440-1-0x0000000000AB0000-0x0000000000AD0000-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-1-5-21-814918696-1585701690-3140955116-1000\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
756	timeout.exe

Kills process with taskkill 1 IoCs

defense_evasion

pid	Process
5772	taskkill.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4440	stub.exe
Token: SeDebugPrivilege	5772	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4440 wrote to memory of 4780	4440	stub.exe	93
PID 4440 wrote to memory of 4780	4440	stub.exe	93
PID 4780 wrote to memory of 1872	4780	cmd.exe	95
PID 4780 wrote to memory of 1872	4780	cmd.exe	95
PID 4780 wrote to memory of 5772	4780	cmd.exe	96
PID 4780 wrote to memory of 5772	4780	cmd.exe	96
PID 4780 wrote to memory of 756	4780	cmd.exe	97
PID 4780 wrote to memory of 756	4780	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\builder\builder\stub\stub.exe
"C:\Users\Admin\AppData\Local\Temp\builder\builder\stub\stub.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4440
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmpB1FA.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmpB1FA.tmp.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4780
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:1872
- - C:\Windows\system32\taskkill.exe
    TaskKill /F /IM 4440
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:5772
- - C:\Windows\system32\timeout.exe
    Timeout /T 2 /Nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:756

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmpB1FA.tmp.bat

Filesize
132B

MD5
203793a06355d67f9d227f23961befdc

SHA1
bbc2704ebb5704eedf55586eaadf209c45fb579d

SHA256
339152bac786e1c6c2e2025017662a20fc018030aaaa64ebbc4349a51a35b00c

SHA512
16349243c4bb0e945ac0bbfb3185999d0c281b2d454ccd2330bb487e04226f24280f70af51184b8f2639e3136157f0134f075ed625ee766630d747451bd03be5

Download Submit
memory/4440-0-0x00007FFDAD3A3000-0x00007FFDAD3A5000-memory.dmp

Filesize
8KB

Download
memory/4440-1-0x0000000000AB0000-0x0000000000AD0000-memory.dmp

Filesize
128KB

Download
memory/4440-2-0x00007FFDAD3A0000-0x00007FFDADE61000-memory.dmp

Filesize
10.8MB

Download
memory/4440-5-0x00007FFDAD3A0000-0x00007FFDADE61000-memory.dmp

Filesize
10.8MB

Download