stormkitty | 0cced5b50789fca3ad4b2c151b798363d712da04c377bd704dcef4898e66b2b4

Analysis

max time kernel
31s
max time network
42s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25-09-2024 19:48

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Reason

Machine shutdown

Report Analysis Logs

General

Target

rstxdhuj.exe
Size

963KB
MD5

1ef39c8bc5799aa381fe093a1f2d532a
SHA1

57eabb02a7c43c9682988227dd470734cc75edb2
SHA256

0cced5b50789fca3ad4b2c151b798363d712da04c377bd704dcef4898e66b2b4
SHA512

13a9c267c4ceb2bd176f1339faa035ffeb08936deeeb4e38252ea43cfe487ea1c1876e4cc2a965548e767af02805a1da62885e6538da056be0c6fae33b637682
SSDEEP

24576:6MGVJ/Oap+Bh45LEwaV1QghDHm5GQTSmGg:6NJ/jpi5waVhjm5GQ2m7

Score

10^/10

stormkitty xworm discovery execution persistence rat stealer trojan

Malware Config

Extracted

Family

xworm

Version

5.0

188.190.10.161:4444

Mutex

TSXTkO0pNBdN2KNw

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1076-1093-0x0000000000400000-0x000000000042E000-memory.dmp	family_xworm

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

StormKitty payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1076-1168-0x00000000079B0000-0x0000000007AD0000-memory.dmp	family_stormkitty

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

Processes:

rstxdhuj.exe

description pid process target process

PID 1296 created 3484 1296 rstxdhuj.exe Explorer.EXE
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exepowershell.exe

pid process

3440 powershell.exe
3868 powershell.exe

description	pid	process	target process
PID 1296 created 3484	1296	rstxdhuj.exe	Explorer.EXE

pid	process
3440	powershell.exe
3868	powershell.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

rstxdhuj.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Ylrdnrwcx = "C:\\Users\\Admin\\AppData\\Roaming\\Ylrdnrwcx.exe"	rstxdhuj.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rstxdhuj.exe

description pid process target process

PID 1296 set thread context of 1076 1296 rstxdhuj.exe InstallUtil.exe
Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4052 1076 WerFault.exe InstallUtil.exe

description	pid	process	target process
PID 1296 set thread context of 1076	1296	rstxdhuj.exe	InstallUtil.exe

pid	pid_target	process	target process
4052	1076	WerFault.exe	InstallUtil.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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

Processes:

rstxdhuj.exeInstallUtil.exepowershell.exepowershell.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rstxdhuj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

InstallUtil.exe

pid process

1076 InstallUtil.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

rstxdhuj.exepowershell.exepowershell.exeInstallUtil.exe

pid process

1296 rstxdhuj.exe
3440 powershell.exe
3440 powershell.exe
3868 powershell.exe
3868 powershell.exe
1076 InstallUtil.exe

pid	process
1076	InstallUtil.exe

pid	process
1296	rstxdhuj.exe
3440	powershell.exe
3440	powershell.exe
3868	powershell.exe
3868	powershell.exe
1076	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

rstxdhuj.exeInstallUtil.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	1296	rstxdhuj.exe
Token: SeDebugPrivilege	1296	rstxdhuj.exe
Token: SeDebugPrivilege	1076	InstallUtil.exe
Token: SeDebugPrivilege	3440	powershell.exe
Token: SeDebugPrivilege	3868	powershell.exe
Token: SeDebugPrivilege	1076	InstallUtil.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

InstallUtil.exe

pid process

1076 InstallUtil.exe

pid	process
1076	InstallUtil.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

rstxdhuj.exeInstallUtil.exe

description	pid	process	target process
PID 1296 wrote to memory of 1076	1296	rstxdhuj.exe	InstallUtil.exe
PID 1296 wrote to memory of 1076	1296	rstxdhuj.exe	InstallUtil.exe
PID 1296 wrote to memory of 1076	1296	rstxdhuj.exe	InstallUtil.exe
PID 1296 wrote to memory of 1076	1296	rstxdhuj.exe	InstallUtil.exe
PID 1296 wrote to memory of 1076	1296	rstxdhuj.exe	InstallUtil.exe
PID 1296 wrote to memory of 1076	1296	rstxdhuj.exe	InstallUtil.exe
PID 1296 wrote to memory of 1076	1296	rstxdhuj.exe	InstallUtil.exe
PID 1296 wrote to memory of 1076	1296	rstxdhuj.exe	InstallUtil.exe
PID 1076 wrote to memory of 3440	1076	InstallUtil.exe	powershell.exe
PID 1076 wrote to memory of 3440	1076	InstallUtil.exe	powershell.exe
PID 1076 wrote to memory of 3440	1076	InstallUtil.exe	powershell.exe
PID 1076 wrote to memory of 3868	1076	InstallUtil.exe	powershell.exe
PID 1076 wrote to memory of 3868	1076	InstallUtil.exe	powershell.exe
PID 1076 wrote to memory of 3868	1076	InstallUtil.exe	powershell.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3484
- C:\Users\Admin\AppData\Local\Temp\rstxdhuj.exe
  "C:\Users\Admin\AppData\Local\Temp\rstxdhuj.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1296
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1076
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3440
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'InstallUtil.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3868
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1076 -s 2012
    3⤵
    - Program crash
    PID:4052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 1076 -ip 1076
1⤵
PID:1404

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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

Discovery

Browser Information Discovery

T1217

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
220dfecab5dbc8610416d401b63fa06a

SHA1
a2e4f47d12720da97c055ec7d6e699ee38b4c243

SHA256
253e50a55c6d880b8b8a51f041e5a2ac54a68d41e005a7295e0446ba3f6116ec

SHA512
fc7503afcd1375bd99e0b06e6fdc76600127b019497ae733734c7097b9223d1a3a59a16dda45e5b3a946802b7389ef6a40ac6e028cae36d11b8d9f28326898f5

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5kr5dq5w.e3e.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1076-1169-0x0000000007D70000-0x00000000080C4000-memory.dmp

Filesize
3.3MB

Download
memory/1076-1093-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1076-1170-0x0000000008100000-0x000000000814C000-memory.dmp

Filesize
304KB

Download
memory/1076-1094-0x0000000005000000-0x000000000509C000-memory.dmp

Filesize
624KB

Download
memory/1076-1168-0x00000000079B0000-0x0000000007AD0000-memory.dmp

Filesize
1.1MB

Download
memory/1076-1167-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/1076-1166-0x0000000005F50000-0x0000000005F5A000-memory.dmp

Filesize
40KB

Download
memory/1076-1165-0x0000000005CA0000-0x0000000005D32000-memory.dmp

Filesize
584KB

Download
memory/1076-1164-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/1076-1162-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/1076-1092-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/1296-1078-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/1296-6-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-50-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-48-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-44-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-42-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-40-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-38-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-36-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-34-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-30-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-28-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-26-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-24-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-86-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/1296-64-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-46-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-32-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-22-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-20-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-16-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-14-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-12-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-56-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-4-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-10-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-8-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-3-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-54-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-1079-0x00000000058E0000-0x0000000005948000-memory.dmp

Filesize
416KB

Download
memory/1296-1080-0x0000000005470000-0x00000000054BC000-memory.dmp

Filesize
304KB

Download
memory/1296-1084-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/1296-1085-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/1296-1086-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/1296-1087-0x0000000006290000-0x0000000006834000-memory.dmp

Filesize
5.6MB

Download
memory/1296-1088-0x00000000059E0000-0x0000000005A34000-memory.dmp

Filesize
336KB

Download
memory/1296-1091-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/1296-52-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-0-0x000000007450E000-0x000000007450F000-memory.dmp

Filesize
4KB

Download
memory/1296-1-0x00000000003A0000-0x0000000000498000-memory.dmp

Filesize
992KB

Download
memory/1296-2-0x0000000005130000-0x000000000521E000-memory.dmp

Filesize
952KB

Download
memory/1296-18-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-58-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-62-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-66-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/1296-60-0x0000000005130000-0x0000000005218000-memory.dmp

Filesize
928KB

Download
memory/3440-1095-0x0000000005420000-0x0000000005456000-memory.dmp

Filesize
216KB

Download
memory/3440-1135-0x0000000008050000-0x000000000806A000-memory.dmp

Filesize
104KB

Download
memory/3440-1115-0x0000000007960000-0x0000000007992000-memory.dmp

Filesize
200KB

Download
memory/3440-1116-0x000000006FB40000-0x000000006FB8C000-memory.dmp

Filesize
304KB

Download
memory/3440-1126-0x00000000079A0000-0x00000000079BE000-memory.dmp

Filesize
120KB

Download
memory/3440-1127-0x00000000079D0000-0x0000000007A73000-memory.dmp

Filesize
652KB

Download
memory/3440-1128-0x0000000008350000-0x00000000089CA000-memory.dmp

Filesize
6.5MB

Download
memory/3440-1129-0x0000000007D10000-0x0000000007D2A000-memory.dmp

Filesize
104KB

Download
memory/3440-1130-0x0000000007D80000-0x0000000007D8A000-memory.dmp

Filesize
40KB

Download
memory/3440-1131-0x0000000007F90000-0x0000000008026000-memory.dmp

Filesize
600KB

Download
memory/3440-1132-0x0000000007F10000-0x0000000007F21000-memory.dmp

Filesize
68KB

Download
memory/3440-1133-0x0000000007F40000-0x0000000007F4E000-memory.dmp

Filesize
56KB

Download
memory/3440-1134-0x0000000007F50000-0x0000000007F64000-memory.dmp

Filesize
80KB

Download
memory/3440-1114-0x0000000006AE0000-0x0000000006B2C000-memory.dmp

Filesize
304KB

Download
memory/3440-1136-0x0000000008030000-0x0000000008038000-memory.dmp

Filesize
32KB

Download
memory/3440-1139-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/3440-1096-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/3440-1113-0x0000000006A10000-0x0000000006A2E000-memory.dmp

Filesize
120KB

Download
memory/3440-1099-0x0000000005A90000-0x00000000060B8000-memory.dmp

Filesize
6.2MB

Download
memory/3440-1112-0x0000000006400000-0x0000000006754000-memory.dmp

Filesize
3.3MB

Download
memory/3440-1101-0x0000000006130000-0x0000000006196000-memory.dmp

Filesize
408KB

Download
memory/3440-1102-0x0000000006390000-0x00000000063F6000-memory.dmp

Filesize
408KB

Download
memory/3440-1100-0x0000000005900000-0x0000000005922000-memory.dmp

Filesize
136KB

Download
memory/3440-1097-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/3440-1098-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/3868-1152-0x000000006FB40000-0x000000006FB8C000-memory.dmp

Filesize
304KB

Download
memory/3868-1150-0x0000000006270000-0x00000000065C4000-memory.dmp

Filesize
3.3MB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads