stormkitty | 519845112f4d4a6f126af8c63fc6c8c64614f4b3261659ae7f7d69527b75da19

General

Target

anilator_protected.exe
Size

1.2MB
MD5

dabf4a7a3784c16fbac0987ea3ea77cc
SHA1

72528767bed8509ac1381231936acd099885a007
SHA256

519845112f4d4a6f126af8c63fc6c8c64614f4b3261659ae7f7d69527b75da19
SHA512

f54b661b9e0c935a5fdbfdf910dbc70eb702824908aa9f8211e8a3be38892235b28af69b9924a5b2e6989e6ee9634a50545d7387105fdc68e0fd43e1a1b39bda
SSDEEP

24576:c5fc0eFHXcNxa5GkGmbzp6XoNHKBzTGn6cTuwoAM85GlFQUXGfFbT2gjZQ5ooZ:QfF23c4Pp6YNHIzynouYQOU5KgjZho

Score

10^/10

stormkitty discovery evasion spyware stealer

Malware Config

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
behavioral1/memory/1532-20-0x0000000000D10000-0x0000000000D1E000-memory.dmp	disable_win_def

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

StormKitty payload 1 IoCs

resource	yara_rule
behavioral1/memory/1532-28-0x00000000090C0000-0x00000000091E0000-memory.dmp	family_stormkitty

Disables Task Manager via registry modification
evasion

.NET Reactor proctector 2 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
behavioral1/memory/1532-2-0x0000000000840000-0x0000000000C06000-memory.dmp	net_reactor
behavioral1/memory/1532-70-0x0000000000840000-0x0000000000C06000-memory.dmp	net_reactor

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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	anilator_protected.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

Suspicious use of NtSetInformationThreadHideFromDebugger 16 IoCs

pid	Process
1532	anilator_protected.exe
1532	anilator_protected.exe
1532	anilator_protected.exe
1532	anilator_protected.exe
1532	anilator_protected.exe
1532	anilator_protected.exe
1532	anilator_protected.exe
1532	anilator_protected.exe
1532	anilator_protected.exe
1532	anilator_protected.exe
1532	anilator_protected.exe
1532	anilator_protected.exe
1532	anilator_protected.exe
1532	anilator_protected.exe
1532	anilator_protected.exe
1532	anilator_protected.exe

Launches sc.exe 2 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
4508	sc.exe
1356	sc.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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4180	1532	WerFault.exe	82

System Location Discovery: System Language Discovery 1 TTPs 3 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	anilator_protected.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1532	anilator_protected.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1532	anilator_protected.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1532 wrote to memory of 4508	1532	anilator_protected.exe	91
PID 1532 wrote to memory of 4508	1532	anilator_protected.exe	91
PID 1532 wrote to memory of 4508	1532	anilator_protected.exe	91
PID 1532 wrote to memory of 1356	1532	anilator_protected.exe	93
PID 1532 wrote to memory of 1356	1532	anilator_protected.exe	93
PID 1532 wrote to memory of 1356	1532	anilator_protected.exe	93

C:\Users\Admin\AppData\Local\Temp\anilator_protected.exe
"C:\Users\Admin\AppData\Local\Temp\anilator_protected.exe"
1⤵
- Checks computer location settings
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1532
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" config wuauserv start=auto
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4508
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wuauserv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1356
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1532 -s 1532
  2⤵
  - Program crash
  PID:4180

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /7
1⤵
PID:3480

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1532 -ip 1532
1⤵
PID:4064

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1532-0-0x0000000000840000-0x0000000000C06000-memory.dmp

Filesize
3.8MB

Download
memory/1532-1-0x000000007420E000-0x000000007420F000-memory.dmp

Filesize
4KB

Download
memory/1532-2-0x0000000000840000-0x0000000000C06000-memory.dmp

Filesize
3.8MB

Download
memory/1532-3-0x0000000006BC0000-0x0000000006C5C000-memory.dmp

Filesize
624KB

Download
memory/1532-4-0x0000000074200000-0x00000000749B0000-memory.dmp

Filesize
7.7MB

Download
memory/1532-5-0x0000000000840000-0x0000000000C06000-memory.dmp

Filesize
3.8MB

Download
memory/1532-6-0x000000007420E000-0x000000007420F000-memory.dmp

Filesize
4KB

Download
memory/1532-8-0x0000000007250000-0x00000000072B6000-memory.dmp

Filesize
408KB

Download
memory/1532-9-0x0000000074200000-0x00000000749B0000-memory.dmp

Filesize
7.7MB

Download
memory/1532-11-0x0000000007D70000-0x0000000007E02000-memory.dmp

Filesize
584KB

Download
memory/1532-12-0x00000000083C0000-0x0000000008964000-memory.dmp

Filesize
5.6MB

Download
memory/1532-14-0x0000000007240000-0x000000000724C000-memory.dmp

Filesize
48KB

Download
memory/1532-18-0x0000000008C20000-0x0000000008DDA000-memory.dmp

Filesize
1.7MB

Download
memory/1532-20-0x0000000000D10000-0x0000000000D1E000-memory.dmp

Filesize
56KB

Download
memory/1532-28-0x00000000090C0000-0x00000000091E0000-memory.dmp

Filesize
1.1MB

Download
memory/1532-29-0x000000000A250000-0x000000000A5A4000-memory.dmp

Filesize
3.3MB

Download
memory/1532-30-0x0000000009230000-0x000000000927C000-memory.dmp

Filesize
304KB

Download
memory/1532-70-0x0000000000840000-0x0000000000C06000-memory.dmp

Filesize
3.8MB

Download
memory/1532-71-0x0000000074200000-0x00000000749B0000-memory.dmp

Filesize
7.7MB

Download

Analysis

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