stormkitty | 34e19eff1a2abfbcec9af157d91af7c502ec0f5cce0b58bb49b7a4c7a23d6f45

General

Target

XClient.exe
Size

68KB
MD5

68604d1b2200493d620fbb9e70c3b182
SHA1

dbffc3b9a4935f31120bd623849175c3072f748e
SHA256

34e19eff1a2abfbcec9af157d91af7c502ec0f5cce0b58bb49b7a4c7a23d6f45
SHA512

1f3f15895dc2b9ac282554d99ea7a7daa44ecd7c0c655c84851200c95b51e1a4688b4690f94a75343b1cbfa838f1aa3e975f4da329782e71436a9a8000d4e19d
SSDEEP

1536:6RgdNcKAE/LQXYd4AnLv5DKA7VHg4kbzmWZf/kxTYSbFcAzOthYV:6wyoEXW4alxBkbzVapFbFrzOtCV

Score

10^/10

stormkitty xworm discovery persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:57562

kind-lap.gl.at.ply.gg:57562

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/1824-1-0x0000000000980000-0x0000000000998000-memory.dmp	family_xworm
behavioral1/files/0x000a000000012263-11.dat	family_xworm
behavioral1/memory/1496-13-0x0000000000DD0000-0x0000000000DE8000-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/1824-15-0x000000001B670000-0x000000001B790000-memory.dmp	family_stormkitty

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

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
1496	svchost.exe
2572	svchost.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\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	XClient.exe

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
2892	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1824	XClient.exe
Token: SeDebugPrivilege	1824	XClient.exe
Token: SeDebugPrivilege	1496	svchost.exe
Token: SeDebugPrivilege	2572	svchost.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1824 wrote to memory of 2892	1824	XClient.exe	30
PID 1824 wrote to memory of 2892	1824	XClient.exe	30
PID 1824 wrote to memory of 2892	1824	XClient.exe	30
PID 828 wrote to memory of 1496	828	taskeng.exe	35
PID 828 wrote to memory of 1496	828	taskeng.exe	35
PID 828 wrote to memory of 1496	828	taskeng.exe	35
PID 828 wrote to memory of 2572	828	taskeng.exe	36
PID 828 wrote to memory of 2572	828	taskeng.exe	36
PID 828 wrote to memory of 2572	828	taskeng.exe	36

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\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1824
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2892

C:\Windows\system32\taskeng.exe
taskeng.exe {7B657CD3-A99A-48A3-BEB2-590EEA15A28D} S-1-5-21-2039016743-699959520-214465309-1000:PIDEURYY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:828
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1496
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2572

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
68KB

MD5
68604d1b2200493d620fbb9e70c3b182

SHA1
dbffc3b9a4935f31120bd623849175c3072f748e

SHA256
34e19eff1a2abfbcec9af157d91af7c502ec0f5cce0b58bb49b7a4c7a23d6f45

SHA512
1f3f15895dc2b9ac282554d99ea7a7daa44ecd7c0c655c84851200c95b51e1a4688b4690f94a75343b1cbfa838f1aa3e975f4da329782e71436a9a8000d4e19d

Download Submit
memory/1496-13-0x0000000000DD0000-0x0000000000DE8000-memory.dmp

Filesize
96KB

Download
memory/1824-0-0x000007FEF5D23000-0x000007FEF5D24000-memory.dmp

Filesize
4KB

Download
memory/1824-1-0x0000000000980000-0x0000000000998000-memory.dmp

Filesize
96KB

Download
memory/1824-6-0x000007FEF5D20000-0x000007FEF670C000-memory.dmp

Filesize
9.9MB

Download
memory/1824-7-0x000007FEF5D23000-0x000007FEF5D24000-memory.dmp

Filesize
4KB

Download
memory/1824-8-0x000007FEF5D20000-0x000007FEF670C000-memory.dmp

Filesize
9.9MB

Download
memory/1824-9-0x00000000005F0000-0x00000000005FC000-memory.dmp

Filesize
48KB

Download
memory/1824-15-0x000000001B670000-0x000000001B790000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads