stormkitty | adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994

General

Target

adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994N.exe
Size

67KB
MD5

cc64308d86b707f3fc9eda4630eb85f0
SHA1

783f4cd9bfadb5c561b177f30b1cd18211a08c04
SHA256

adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994
SHA512

0da4a99489c61a2d4ae1bd098f7c3039111b36d26f24ed66e514691b1f2cd1905f71cdbb1437cc39d9d7e55820a12fa082e2dc6bc088a8dbcb9d0bc3d3e77c76
SSDEEP

768:ZyH6ce2zT+BEEm/Dm4zO7iYoCGSbc+hTYGEQKQbjA7kkHi3e6VRA6+ZgIYOShWZ/:Iac/Ji7noCGutRbjA7kkSq6+6IYOSX+

Score

10^/10

stormkitty xworm credential_access discovery execution persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xworm

C2

91.92.241.132:7000

Attributes

Install_directory
%AppData%
install_file
USDT20.exe
telegram
https://api.telegram.org/bot7206931180:AAEOX3tXBGQztAH7K_TaFzjXLXP1KedKPeA

Signatures

Contains code to disable Windows Defender 1 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

resource	yara_rule
behavioral2/memory/3028-61-0x000000001CC90000-0x000000001CC9E000-memory.dmp	disable_win_def

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3028-1-0x0000000000CD0000-0x0000000000CE8000-memory.dmp	family_xworm
behavioral2/files/0x0009000000023445-58.dat	family_xworm

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

StormKitty payload 1 IoCs

resource	yara_rule
behavioral2/memory/3028-73-0x000000001E2C0000-0x000000001E3E0000-memory.dmp	family_stormkitty

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1544	powershell.exe
4084	powershell.exe
728	powershell.exe
4716	powershell.exe

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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994N.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\USDT20.lnk	adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994N.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\USDT20.lnk	adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994N.exe

Executes dropped EXE 2 IoCs

pid	Process
4412	USDT20.exe
3356	USDT20.exe

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

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\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\USDT20 = "C:\\Users\\Admin\\AppData\\Roaming\\USDT20.exe"	adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994N.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.

flow	ioc
29	ip-api.com

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

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2544	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4716	powershell.exe
4716	powershell.exe
1544	powershell.exe
1544	powershell.exe
4084	powershell.exe
4084	powershell.exe
728	powershell.exe
728	powershell.exe
3028	adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994N.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	3028	adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994N.exe
Token: SeDebugPrivilege	4716	powershell.exe
Token: SeDebugPrivilege	1544	powershell.exe
Token: SeDebugPrivilege	4084	powershell.exe
Token: SeDebugPrivilege	728	powershell.exe
Token: SeDebugPrivilege	3028	adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994N.exe
Token: SeDebugPrivilege	4412	USDT20.exe
Token: SeDebugPrivilege	3356	USDT20.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3028 wrote to memory of 4716	3028	adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994N.exe	90
PID 3028 wrote to memory of 4716	3028	adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994N.exe	90
PID 3028 wrote to memory of 1544	3028	adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994N.exe	92
PID 3028 wrote to memory of 1544	3028	adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994N.exe	92
PID 3028 wrote to memory of 4084	3028	adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994N.exe	94
PID 3028 wrote to memory of 4084	3028	adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994N.exe	94
PID 3028 wrote to memory of 728	3028	adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994N.exe	97
PID 3028 wrote to memory of 728	3028	adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994N.exe	97
PID 3028 wrote to memory of 2544	3028	adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994N.exe	99
PID 3028 wrote to memory of 2544	3028	adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994N.exe	99

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\adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994N.exe
"C:\Users\Admin\AppData\Local\Temp\adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994N.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3028
- 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\Local\Temp\adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4716
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1544
- 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\USDT20.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4084
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'USDT20.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:728
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "USDT20" /tr "C:\Users\Admin\AppData\Roaming\USDT20.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2544

C:\Users\Admin\AppData\Roaming\USDT20.exe
C:\Users\Admin\AppData\Roaming\USDT20.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4412

C:\Users\Admin\AppData\Roaming\USDT20.exe
C:\Users\Admin\AppData\Roaming\USDT20.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3356

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Browser Information Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\USDT20.exe.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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

Filesize
944B

MD5
ef647504cf229a16d02de14a16241b90

SHA1
81480caca469857eb93c75d494828b81e124fda0

SHA256
47002672443e80410e55a0b6d683573ac27d70d803b57ee3c2818d1008669710

SHA512
a6d8c08c708eee6f7e700880ce79d2ba7cd0acbe8529d96e18f3e90ea1f3cf33fd801dd6eba6017cdd02769e968c48278c090c1deeac710124f79423cd862ee1

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

Filesize
944B

MD5
98baf5117c4fcec1692067d200c58ab3

SHA1
5b33a57b72141e7508b615e17fb621612cb8e390

SHA256
30bf8496e9a08f4fdfe4767abcd565f92b6da06ca1c7823a70cb7cab16262e51

SHA512
344a70bfc037d54176f12db91f05bf4295bb587a5062fd1febe6f52853571170bd8ef6042cb87b893185bbae1937cf77b679d7970f8cc1c2666b0b7c1b32987d

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lxf0zdb0.ojw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\USDT20.exe

Filesize
67KB

MD5
cc64308d86b707f3fc9eda4630eb85f0

SHA1
783f4cd9bfadb5c561b177f30b1cd18211a08c04

SHA256
adb457a925a23c0051ac0f18ad7fdb8e2c64302d15d0077cc3182c7f74257994

SHA512
0da4a99489c61a2d4ae1bd098f7c3039111b36d26f24ed66e514691b1f2cd1905f71cdbb1437cc39d9d7e55820a12fa082e2dc6bc088a8dbcb9d0bc3d3e77c76

Download Submit
memory/3028-60-0x00007FFA6BAC0000-0x00007FFA6C581000-memory.dmp

Filesize
10.8MB

Download
memory/3028-71-0x000000001D8D0000-0x000000001DAEC000-memory.dmp

Filesize
2.1MB

Download
memory/3028-1-0x0000000000CD0000-0x0000000000CE8000-memory.dmp

Filesize
96KB

Download
memory/3028-114-0x00000000015C0000-0x00000000015CE000-memory.dmp

Filesize
56KB

Download
memory/3028-73-0x000000001E2C0000-0x000000001E3E0000-memory.dmp

Filesize
1.1MB

Download
memory/3028-61-0x000000001CC90000-0x000000001CC9E000-memory.dmp

Filesize
56KB

Download
memory/3028-3-0x00007FFA6BAC0000-0x00007FFA6C581000-memory.dmp

Filesize
10.8MB

Download
memory/3028-2-0x00007FFA6BAC3000-0x00007FFA6BAC5000-memory.dmp

Filesize
8KB

Download
memory/3028-0-0x00007FFA6BAC3000-0x00007FFA6BAC5000-memory.dmp

Filesize
8KB

Download
memory/4716-4-0x00007FFA6BAC0000-0x00007FFA6C581000-memory.dmp

Filesize
10.8MB

Download
memory/4716-16-0x00007FFA6BAC0000-0x00007FFA6C581000-memory.dmp

Filesize
10.8MB

Download
memory/4716-11-0x00000163EC170000-0x00000163EC192000-memory.dmp

Filesize
136KB

Download
memory/4716-15-0x00007FFA6BAC0000-0x00007FFA6C581000-memory.dmp

Filesize
10.8MB

Download
memory/4716-19-0x00007FFA6BAC0000-0x00007FFA6C581000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads