stormkitty | f53553980b3b4a76cc4faf39f7338e20107f9fd6e1e65cf7f23185ced976f8c4

General

Target

SeroXenBuilder.exe
Size

91KB
MD5

8e298601185d24d6b8d9ba9d04eb4da8
SHA1

308c42c588c7dffcbe895b32a62b7edb689db20a
SHA256

f53553980b3b4a76cc4faf39f7338e20107f9fd6e1e65cf7f23185ced976f8c4
SHA512

4dc01eb4753065753b463247fdb450cad69432924e9f1c156512d34c2d676f389ef5d6665cc8deda003187683a201b5114abd093b693fe999f9165b3bf0fb4f4
SSDEEP

1536:dKgm3aS+IJ+fc3mPZoCGWvw+tWMeROVhTkbeIRR4LlV5/eEWCU8VQDDY4:dK33F+I8flo/SogVNBhV5GEyc4

Score

10^/10

stormkitty xworm persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xworm

C2

no-speed.gl.at.ply.gg:1836

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 2 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\XYZV1.exe	family_xworm
behavioral2/memory/640-15-0x0000000000400000-0x000000000041A000-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/640-87-0x000000001CA10000-0x000000001CB2E000-memory.dmp	family_stormkitty

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

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

XYZV1.exeSeroXenBuilder.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	XYZV1.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	SeroXenBuilder.exe

Drops startup file 2 IoCs

Processes:

XYZV1.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnk	XYZV1.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnk	XYZV1.exe

Executes dropped EXE 3 IoCs

Processes:

XYZV1.exeWindowsWindows

pid process

640 XYZV1.exe
4736 Windows
448 Windows
Reads user/profile data of web browsers 2 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

pid	process
640	XYZV1.exe
4736	Windows
448	Windows

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

XYZV1.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows = "C:\\Users\\Admin\\AppData\\Roaming\\Windows"	XYZV1.exe

Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

13 ip-api.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

4184 schtasks.exe

flow	ioc
13	ip-api.com

pid	process
4184	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeXYZV1.exe

pid	process
2404	powershell.exe
2404	powershell.exe
4932	powershell.exe
4932	powershell.exe
4336	powershell.exe
4336	powershell.exe
3196	powershell.exe
3196	powershell.exe
640	XYZV1.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

XYZV1.exepowershell.exepowershell.exepowershell.exepowershell.exeWindowsWindows

description	pid	process
Token: SeDebugPrivilege	640	XYZV1.exe
Token: SeDebugPrivilege	2404	powershell.exe
Token: SeDebugPrivilege	4932	powershell.exe
Token: SeDebugPrivilege	4336	powershell.exe
Token: SeDebugPrivilege	3196	powershell.exe
Token: SeDebugPrivilege	640	XYZV1.exe
Token: SeDebugPrivilege	4736	Windows
Token: SeDebugPrivilege	448	Windows

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

XYZV1.exe

pid process

640 XYZV1.exe

pid	process
640	XYZV1.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

SeroXenBuilder.exeXYZV1.exe

description	pid	process	target process
PID 2300 wrote to memory of 640	2300	SeroXenBuilder.exe	XYZV1.exe
PID 2300 wrote to memory of 640	2300	SeroXenBuilder.exe	XYZV1.exe
PID 2300 wrote to memory of 2352	2300	SeroXenBuilder.exe	cmd.exe
PID 2300 wrote to memory of 2352	2300	SeroXenBuilder.exe	cmd.exe
PID 640 wrote to memory of 2404	640	XYZV1.exe	powershell.exe
PID 640 wrote to memory of 2404	640	XYZV1.exe	powershell.exe
PID 640 wrote to memory of 4932	640	XYZV1.exe	powershell.exe
PID 640 wrote to memory of 4932	640	XYZV1.exe	powershell.exe
PID 640 wrote to memory of 4336	640	XYZV1.exe	powershell.exe
PID 640 wrote to memory of 4336	640	XYZV1.exe	powershell.exe
PID 640 wrote to memory of 3196	640	XYZV1.exe	powershell.exe
PID 640 wrote to memory of 3196	640	XYZV1.exe	powershell.exe
PID 640 wrote to memory of 4184	640	XYZV1.exe	schtasks.exe
PID 640 wrote to memory of 4184	640	XYZV1.exe	schtasks.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\SeroXenBuilder.exe
"C:\Users\Admin\AppData\Local\Temp\SeroXenBuilder.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2300

C:\Users\Admin\AppData\Roaming\XYZV1.exe
"C:\Users\Admin\AppData\Roaming\XYZV1.exe"
2⤵
- Checks computer location settings
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:640

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\XYZV1.exe'
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2404

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XYZV1.exe'
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4932

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\Windows'
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4336

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Windows'
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3196

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Windows" /tr "C:\Users\Admin\AppData\Roaming\Windows"
3⤵
- Creates scheduled task(s)
PID:4184

C:\Windows\system32\cmd.exe
"C:\Windows\system32\cmd.exe"
2⤵
PID:2352

C:\Users\Admin\AppData\Roaming\Windows
C:\Users\Admin\AppData\Roaming\Windows
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4736

C:\Users\Admin\AppData\Roaming\Windows
C:\Users\Admin\AppData\Roaming\Windows
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:448

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Windows.log
Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
eb1ad317bd25b55b2bbdce8a28a74a94

SHA1
98a3978be4d10d62e7411946474579ee5bdc5ea6

SHA256
9e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98

SHA512
d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
e60eb305a7b2d9907488068b7065abd3

SHA1
1643dd7f915ac50c75bc01c53d68c5dafb9ce28d

SHA256
ad07460e061642c0dd4e7dfa7b821aacce873e290389e72f708e9f3504f9d135

SHA512
95c45afec6fa4e0b2a21edd10a6b2dc30568810c67bc9bc34d98ab111c48261f377a370583adb27e08616b0108026c119493b1b093b52ce931117e646b46cb7b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mv5ygja4.mjy.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\XYZV1.exe
Filesize
80KB

MD5
f337249869cf597748578e6a9d441d86

SHA1
ff871d0e24eb8ee902d7ec9cfc8c08bf4714616e

SHA256
67391b8a35af74d6453e8f0d7233c84044e8f0346506d78761cb91e957ba03a2

SHA512
4ca7283417bb635278903d5d456b02f4ddee6d02e2bdd3db988b191061e359d22df43bddc5c44d1e99afee2551033ffde434de28e0565c3630e26aa852eff899

Download Submit
memory/448-137-0x00007FF8ED0F0000-0x00007FF8EDBB1000-memory.dmp

Filesize
10.8MB

Download
memory/448-136-0x00007FF8ED0F0000-0x00007FF8EDBB1000-memory.dmp

Filesize
10.8MB

Download
memory/640-80-0x00007FF8ED0F0000-0x00007FF8EDBB1000-memory.dmp

Filesize
10.8MB

Download
memory/640-20-0x0000000000CE0000-0x0000000000CF0000-memory.dmp

Filesize
64KB

Download
memory/640-87-0x000000001CA10000-0x000000001CB2E000-memory.dmp

Filesize
1.1MB

Download
memory/640-86-0x0000000000CE0000-0x0000000000CF0000-memory.dmp

Filesize
64KB

Download
memory/640-129-0x000000001D6A0000-0x000000001DB74000-memory.dmp

Filesize
4.8MB

Download
memory/640-15-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/640-16-0x00007FF8ED0F0000-0x00007FF8EDBB1000-memory.dmp

Filesize
10.8MB

Download
memory/640-130-0x0000000000BE0000-0x0000000000BEC000-memory.dmp

Filesize
48KB

Download
memory/2300-19-0x00007FF8ED0F0000-0x00007FF8EDBB1000-memory.dmp

Filesize
10.8MB

Download
memory/2300-2-0x00007FF8ED0F0000-0x00007FF8EDBB1000-memory.dmp

Filesize
10.8MB

Download
memory/2300-0-0x0000000000790000-0x00000000007AE000-memory.dmp

Filesize
120KB

Download
memory/2404-21-0x00007FF8ED0F0000-0x00007FF8EDBB1000-memory.dmp

Filesize
10.8MB

Download
memory/2404-32-0x000001797F580000-0x000001797F5A2000-memory.dmp

Filesize
136KB

Download
memory/2404-35-0x00007FF8ED0F0000-0x00007FF8EDBB1000-memory.dmp

Filesize
10.8MB

Download
memory/2404-22-0x000001797D3C0000-0x000001797D3D0000-memory.dmp

Filesize
64KB

Download
memory/3196-73-0x000001AD3A870000-0x000001AD3A880000-memory.dmp

Filesize
64KB

Download
memory/3196-72-0x00007FF8ED0F0000-0x00007FF8EDBB1000-memory.dmp

Filesize
10.8MB

Download
memory/3196-74-0x000001AD3A870000-0x000001AD3A880000-memory.dmp

Filesize
64KB

Download
memory/3196-82-0x00007FF8ED0F0000-0x00007FF8EDBB1000-memory.dmp

Filesize
10.8MB

Download
memory/4336-52-0x00007FF8ED0F0000-0x00007FF8EDBB1000-memory.dmp

Filesize
10.8MB

Download
memory/4336-66-0x00007FF8ED0F0000-0x00007FF8EDBB1000-memory.dmp

Filesize
10.8MB

Download
memory/4336-64-0x000001EE3F300000-0x000001EE3F310000-memory.dmp

Filesize
64KB

Download
memory/4336-53-0x000001EE3F300000-0x000001EE3F310000-memory.dmp

Filesize
64KB

Download
memory/4736-128-0x00007FF8ED0F0000-0x00007FF8EDBB1000-memory.dmp

Filesize
10.8MB

Download
memory/4736-132-0x00007FF8ED0F0000-0x00007FF8EDBB1000-memory.dmp

Filesize
10.8MB

Download
memory/4932-51-0x00007FF8ED0F0000-0x00007FF8EDBB1000-memory.dmp

Filesize
10.8MB

Download
memory/4932-39-0x000001C65FDE0000-0x000001C65FDF0000-memory.dmp

Filesize
64KB

Download
memory/4932-38-0x000001C65FDE0000-0x000001C65FDF0000-memory.dmp

Filesize
64KB

Download
memory/4932-37-0x00007FF8ED0F0000-0x00007FF8EDBB1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads