stormkitty | 80e3e1b6447f2f22593ca40b29a153060c2c92bb5e237d2932a275f87dc16146

Analysis

max time kernel
1558s
max time network
1559s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20-10-2024 16:54

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General

Target

sample1.exe
Size

45KB
MD5

d4e300eb8ed5bc378b50c2c0fa73dd82
SHA1

de0f866207fa8d5018a82aa75261a65b7d6697bd
SHA256

80e3e1b6447f2f22593ca40b29a153060c2c92bb5e237d2932a275f87dc16146
SHA512

ffaeba3bd79aed5b1f812dcb07efdddf27ec38c788a042f78c57d3caabb363a8c6720df2d0cf9b830b8c73dea2d8350e5e700408c4e831ce3287793aed9b5a8f
SSDEEP

768:+Dl1L0/tSsg+vpZzXOC/5G6hKCJmt02XtRkbyh2M3qQYHzYOahWlte:wzL01rrzXOCRthKCJa0wkby0LYOawHe

Score

10^/10

stormkitty xworm discovery rat spyware stealer trojan

Malware Config

Extracted

Family

xworm

147.185.221.16:40164

147.185.221.20:40164

Attributes

install_file
System Volume Information Prefetch.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/1304-1-0x00000000008F0000-0x0000000000902000-memory.dmp	family_xworm

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

StormKitty payload 1 IoCs

resource	yara_rule
behavioral1/memory/1304-6-0x000000001B720000-0x000000001B83E000-memory.dmp	family_stormkitty

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Deletes itself 1 IoCs

pid	Process
556	cmd.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
Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2508	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1304	sample1.exe
1304	sample1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1304	sample1.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1304 wrote to memory of 556	1304	sample1.exe	32
PID 1304 wrote to memory of 556	1304	sample1.exe	32
PID 1304 wrote to memory of 556	1304	sample1.exe	32
PID 556 wrote to memory of 2508	556	cmd.exe	34
PID 556 wrote to memory of 2508	556	cmd.exe	34
PID 556 wrote to memory of 2508	556	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\sample1.exe
"C:\Users\Admin\AppData\Local\Temp\sample1.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1304
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpF030.tmp.bat""
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:556
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2508

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpF030.tmp.bat

Filesize
159B

MD5
43bed6fb808bbf4a74002c2cef8f6900

SHA1
44e2d245fa293aa222e8d62316a45bcedd276676

SHA256
f553dca488255c388b59be9ad6b947e676ad21b28bfb2f6641aee532df038d54

SHA512
869d80cd6a4970598d26f8ef0497affa58faa452afdbd4c2819c3bfc3d5df6490588e13499c3f1b7018b1b3a1ee588983bd5c7a72956c533ca5083c978f21dd1

Download Submit
memory/1304-0-0x000007FEF5F83000-0x000007FEF5F84000-memory.dmp

Filesize
4KB

Download
memory/1304-1-0x00000000008F0000-0x0000000000902000-memory.dmp

Filesize
72KB

Download
memory/1304-2-0x000007FEF5F80000-0x000007FEF696C000-memory.dmp

Filesize
9.9MB

Download
memory/1304-3-0x000007FEF5F83000-0x000007FEF5F84000-memory.dmp

Filesize
4KB

Download
memory/1304-4-0x000007FEF5F80000-0x000007FEF696C000-memory.dmp

Filesize
9.9MB

Download
memory/1304-5-0x000000001CF70000-0x000000001D2C0000-memory.dmp

Filesize
3.3MB

Download
memory/1304-6-0x000000001B720000-0x000000001B83E000-memory.dmp

Filesize
1.1MB

Download
memory/1304-38-0x000007FEF5F80000-0x000007FEF696C000-memory.dmp

Filesize
9.9MB

Download