stormkitty | 39b268b299acc7944e2c3081c586b84003935761f22a98dbe2086181d4e697c7

Analysis

max time kernel
106s
max time network
138s
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, 02:30

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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
behavioral14/memory/316-1-0x0000000000FA0000-0x0000000000FC0000-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-1-5-21-446031748-3036493239-2009529691-1000\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
4584	timeout.exe

Kills process with taskkill 1 IoCs

defense_evasion

pid	Process
4576	taskkill.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	316	stub.exe
Token: SeDebugPrivilege	4576	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 316 wrote to memory of 1960	316	stub.exe	90
PID 316 wrote to memory of 1960	316	stub.exe	90
PID 1960 wrote to memory of 4516	1960	cmd.exe	92
PID 1960 wrote to memory of 4516	1960	cmd.exe	92
PID 1960 wrote to memory of 4576	1960	cmd.exe	93
PID 1960 wrote to memory of 4576	1960	cmd.exe	93
PID 1960 wrote to memory of 4584	1960	cmd.exe	94
PID 1960 wrote to memory of 4584	1960	cmd.exe	94

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:316
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp8770.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmp8770.tmp.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1960
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:4516
- - C:\Windows\system32\taskkill.exe
    TaskKill /F /IM 316
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4576
- - C:\Windows\system32\timeout.exe
    Timeout /T 2 /Nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:4584

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\tmp8770.tmp.bat

Filesize
131B

MD5
033b06029966e8682a49e8cd0bdfd9da

SHA1
d5cc3f0cf9d8afc10373d7aab971f89a1cc77890

SHA256
7396f60e8370ef7919e9a879e0b1ee470cda2d9acbc285553fa734ee70ed88a1

SHA512
238f754a922c74423c1411243e4049a3a65fafc693beb830ddbcddad9cda93b2b18b522ae8f2bcb7859b3a46067742572f8a2172eb7dbdce57af9761e149e61c

Download Submit
memory/316-0-0x00007FF9FFAE3000-0x00007FF9FFAE5000-memory.dmp

Filesize
8KB

Download
memory/316-1-0x0000000000FA0000-0x0000000000FC0000-memory.dmp

Filesize
128KB

Download
memory/316-2-0x00007FF9FFAE0000-0x00007FFA005A1000-memory.dmp

Filesize
10.8MB

Download
memory/316-5-0x00007FF9FFAE0000-0x00007FFA005A1000-memory.dmp

Filesize
10.8MB

Download