stormkitty | 9bca28e8dbaecaadc97b1806a97c0d6410b3a10b682e7cb8331693e06c77d8a1

Analysis

max time kernel
144s
max time network
148s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
30-09-2024 21:03

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General

Target

2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe
Size

3.6MB
MD5

2cf5cddefdb9208bea01442cad44896d
SHA1

1b2f02ed71659f7fa21d8ac3ca9d18ee90b13097
SHA256

9bca28e8dbaecaadc97b1806a97c0d6410b3a10b682e7cb8331693e06c77d8a1
SHA512

e063b1ee8852260a741d56222acb5f0b7318d78d9bb9b0a54abedce97af7ae3c5492fc4136861f1c8c1b4dace87b1b694e15bcd9e4f0f27e5d6ef0a9a997840b
SSDEEP

98304:ze3/NQcGeqxQat113OU/jIEeQfoR/IuOFVjUu5:zGmreqxV13FIF0wu

Score

10^/10

stormkitty xworm discovery persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xworm

Attributes

install_file
USB.exe
pastebin_url
https://pastebin.com/raw/wEzYtSg6

Signatures

Detect Xworm Payload 11 IoCs

resource	yara_rule
behavioral1/memory/2564-22-0x0000000000400000-0x00000000004D0000-memory.dmp	family_xworm
behavioral1/memory/2564-23-0x0000000000400000-0x00000000004D0000-memory.dmp	family_xworm
behavioral1/memory/2564-21-0x0000000000400000-0x00000000004D0000-memory.dmp	family_xworm
behavioral1/files/0x000700000001925c-29.dat	family_xworm
behavioral1/memory/2868-47-0x0000000000B20000-0x0000000000B34000-memory.dmp	family_xworm
behavioral1/memory/1476-67-0x0000000000400000-0x00000000004D0000-memory.dmp	family_xworm
behavioral1/memory/2700-76-0x00000000010E0000-0x00000000010F4000-memory.dmp	family_xworm
behavioral1/memory/1476-120-0x0000000000400000-0x00000000004D0000-memory.dmp	family_xworm
behavioral1/memory/1476-121-0x0000000000400000-0x00000000004D0000-memory.dmp	family_xworm
behavioral1/memory/1476-146-0x0000000000400000-0x00000000004D0000-memory.dmp	family_xworm
behavioral1/memory/1476-174-0x0000000000400000-0x00000000004D0000-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/2868-122-0x000000001D2C0000-0x000000001D3E0000-memory.dmp	family_stormkitty

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

Executes dropped EXE 4 IoCs

pid	Process
2868	._cache_2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe
2748	Synaptics.exe
1476	Synaptics.exe
2700	._cache_Synaptics.exe

Loads dropped DLL 4 IoCs

pid	Process
2564	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe
2564	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe
1476	Synaptics.exe
1476	Synaptics.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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Synaptics Pointing Device Driver = "C:\\ProgramData\\Synaptics\\Synaptics.exe"	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
4	pastebin.com
5	pastebin.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2012 set thread context of 2564	2012	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe	31
PID 2748 set thread context of 1476	2748	Synaptics.exe	34

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Synaptics.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Synaptics.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1592	EXCEL.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2868	._cache_2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe
Token: SeDebugPrivilege	2700	._cache_Synaptics.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1592	EXCEL.EXE

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2012 wrote to memory of 2564	2012	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe	31
PID 2012 wrote to memory of 2564	2012	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe	31
PID 2012 wrote to memory of 2564	2012	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe	31
PID 2012 wrote to memory of 2564	2012	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe	31
PID 2012 wrote to memory of 2564	2012	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe	31
PID 2012 wrote to memory of 2564	2012	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe	31
PID 2012 wrote to memory of 2564	2012	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe	31
PID 2012 wrote to memory of 2564	2012	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe	31
PID 2012 wrote to memory of 2564	2012	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe	31
PID 2012 wrote to memory of 2564	2012	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe	31
PID 2012 wrote to memory of 2564	2012	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe	31
PID 2012 wrote to memory of 2564	2012	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe	31
PID 2564 wrote to memory of 2868	2564	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe	32
PID 2564 wrote to memory of 2868	2564	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe	32
PID 2564 wrote to memory of 2868	2564	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe	32
PID 2564 wrote to memory of 2868	2564	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe	32
PID 2564 wrote to memory of 2748	2564	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe	33
PID 2564 wrote to memory of 2748	2564	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe	33
PID 2564 wrote to memory of 2748	2564	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe	33
PID 2564 wrote to memory of 2748	2564	2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe	33
PID 2748 wrote to memory of 1476	2748	Synaptics.exe	34
PID 2748 wrote to memory of 1476	2748	Synaptics.exe	34
PID 2748 wrote to memory of 1476	2748	Synaptics.exe	34
PID 2748 wrote to memory of 1476	2748	Synaptics.exe	34
PID 2748 wrote to memory of 1476	2748	Synaptics.exe	34
PID 2748 wrote to memory of 1476	2748	Synaptics.exe	34
PID 2748 wrote to memory of 1476	2748	Synaptics.exe	34
PID 2748 wrote to memory of 1476	2748	Synaptics.exe	34
PID 2748 wrote to memory of 1476	2748	Synaptics.exe	34
PID 2748 wrote to memory of 1476	2748	Synaptics.exe	34
PID 2748 wrote to memory of 1476	2748	Synaptics.exe	34
PID 2748 wrote to memory of 1476	2748	Synaptics.exe	34
PID 1476 wrote to memory of 2700	1476	Synaptics.exe	35
PID 1476 wrote to memory of 2700	1476	Synaptics.exe	35
PID 1476 wrote to memory of 2700	1476	Synaptics.exe	35
PID 1476 wrote to memory of 2700	1476	Synaptics.exe	35

C:\Users\Admin\AppData\Local\Temp\2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2012
- C:\Users\Admin\AppData\Local\Temp\2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe
  "C:\Users\Admin\AppData\Local\Temp\2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe"
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2564
- - C:\Users\Admin\AppData\Local\Temp\._cache_2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe
    "C:\Users\Admin\AppData\Local\Temp\._cache_2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2868
- - C:\ProgramData\Synaptics\Synaptics.exe
    "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2748
  - - C:\ProgramData\Synaptics\Synaptics.exe
      "C:\ProgramData\Synaptics\Synaptics.exe"
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:1476
    - - C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
        
        "C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:2700

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /automation -Embedding
1⤵
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1592

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

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

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\ProgramData\Synaptics\Synaptics.exe

Filesize
3.6MB

MD5
2cf5cddefdb9208bea01442cad44896d

SHA1
1b2f02ed71659f7fa21d8ac3ca9d18ee90b13097

SHA256
9bca28e8dbaecaadc97b1806a97c0d6410b3a10b682e7cb8331693e06c77d8a1

SHA512
e063b1ee8852260a741d56222acb5f0b7318d78d9bb9b0a54abedce97af7ae3c5492fc4136861f1c8c1b4dace87b1b694e15bcd9e4f0f27e5d6ef0a9a997840b

Download Submit
C:\Users\Admin\AppData\Local\Temp\MZmpNBoF.xlsm

Filesize
17KB

MD5
e566fc53051035e1e6fd0ed1823de0f9

SHA1
00bc96c48b98676ecd67e81a6f1d7754e4156044

SHA256
8e574b4ae6502230c0829e2319a6c146aebd51b7008bf5bbfb731424d7952c15

SHA512
a12f56ff30ea35381c2b8f8af2446cf1daa21ee872e98cad4b863db060acd4c33c5760918c277dadb7a490cb4ca2f925d59c70dc5171e16601a11bc4a6542b04

Download Submit
C:\Users\Admin\AppData\Local\Temp\MZmpNBoF.xlsm

Filesize
25KB

MD5
1e58fcfd7f16ca836139a9416e345bab

SHA1
7f6a95f2083f614fb12a6811a121275dea1c9154

SHA256
4bf56f60a97fa30ef396aea02e60d4fa685290aa66728db8b50a843de5ab115f

SHA512
b20777d4f19075bfef7569b676c96a29b4e0f25366edf8bd6ff501b88eb16e7b2fa7a12e516ed6a06b1c5cdf16f9d19c61284cc9a4d3a12904e35d5917e24c55

Download Submit
\Users\Admin\AppData\Local\Temp\._cache_2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe

Filesize
56KB

MD5
58309af0f1139095eb1eaabcd725063c

SHA1
f7d419e58597f9e3babac8e4f0066fd0f1ddf5ed

SHA256
6acae1df5780f41a9b3d291aacca815f55a4a82b2a4bbfb275cce13a05bd2311

SHA512
057e53ced55171d21f67f4464845290710a5c8072632e05f98683e2d78d3b6a06dd94d190e8a4965b134386e5d9040fb6891eb84ff1c9b09f42fab8ce9512a03

Download Submit
memory/1476-120-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/1476-64-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1476-67-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/1476-174-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/1476-146-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/1476-121-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/1592-77-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2012-4-0x000000007452E000-0x000000007452F000-memory.dmp

Filesize
4KB

Download
memory/2012-0-0x000000007452E000-0x000000007452F000-memory.dmp

Filesize
4KB

Download
memory/2012-6-0x0000000006390000-0x00000000064A2000-memory.dmp

Filesize
1.1MB

Download
memory/2012-5-0x0000000074520000-0x0000000074C0E000-memory.dmp

Filesize
6.9MB

Download
memory/2012-3-0x0000000000510000-0x0000000000520000-memory.dmp

Filesize
64KB

Download
memory/2012-2-0x0000000074520000-0x0000000074C0E000-memory.dmp

Filesize
6.9MB

Download
memory/2012-1-0x0000000000980000-0x0000000000D28000-memory.dmp

Filesize
3.7MB

Download
memory/2012-25-0x0000000074520000-0x0000000074C0E000-memory.dmp

Filesize
6.9MB

Download
memory/2564-11-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2564-23-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2564-8-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2564-13-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2564-22-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2564-9-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2564-15-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2564-7-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2564-17-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2564-24-0x00000000000F0000-0x00000000000F1000-memory.dmp

Filesize
4KB

Download
memory/2564-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2564-21-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2700-76-0x00000000010E0000-0x00000000010F4000-memory.dmp

Filesize
80KB

Download
memory/2748-49-0x0000000001010000-0x00000000013B8000-memory.dmp

Filesize
3.7MB

Download
memory/2868-122-0x000000001D2C0000-0x000000001D3E0000-memory.dmp

Filesize
1.1MB

Download
memory/2868-47-0x0000000000B20000-0x0000000000B34000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads