stormkitty | 2bd965f29bf25dfa230be112a130a519937c00e02c498dde8d67ae4d3258de99

General

Target

FreeCheat.exe
Size

809KB
MD5

94d86e51d8f55a38484c0147f5a4639a
SHA1

f3eb5147cca4067c43033280ab7b24b6843c7047
SHA256

2bd965f29bf25dfa230be112a130a519937c00e02c498dde8d67ae4d3258de99
SHA512

e26370075cc154c12388ff1cbdaa74643c020d21ae6e17d7a9ee0e49e8e7365e35c58e1cd8478fe6bf81f2475d9dbcfd1296f69f4e7324f57a6dd5d26ea26c71
SSDEEP

12288:yMSApJVYG5lDLyjsb0eOzkv4R7QnvUUilQ35+6G75V9VS+OzhJCgws:ynsJ39LyjbJkQFMhmC+6GD9wn

Score

10^/10

stormkitty xred xworm backdoor discovery persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xworm

C2

review-tennis.gl.at.ply.gg:37622

Attributes

Install_directory
%LocalAppData%
install_file
svchost2.exe
telegram
https://api.telegram.org/bot7326491521:AAHlNX1AHs0be6K8nhvysevBir5JQbB6QP0/sendMessage?chat_id=7268548907

Extracted

Family

xred

C2

xred.mooo.com

Attributes

email
[email protected]
payload_url
http://freedns.afraid.org/api/?action=getdyndns&sha=a30fa98efc092684e8d1c5cff797bcc613562978

https://docs.google.com/uc?id=0BxsMXGfPIZfSVlVsOGlEVGxuZVk&export=download

https://www.dropbox.com/s/n1w4p8gc6jzo0sg/SUpdate.ini?dl=1

http://xred.site50.net/syn/SUpdate.ini

https://docs.google.com/uc?id=0BxsMXGfPIZfSVzUyaHFYVkQxeFk&export=download

https://www.dropbox.com/s/zhp1b06imehwylq/Synaptics.rar?dl=1

http://xred.site50.net/syn/Synaptics.rar

https://docs.google.com/uc?id=0BxsMXGfPIZfSTmlVYkxhSDg5TzQ&export=download

https://www.dropbox.com/s/fzj752whr3ontsm/SSLLibrary.dll?dl=1

http://xred.site50.net/syn/SSLLibrary.dll

Signatures

Detect Xworm Payload 6 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\._cache_FreeCheat.exe	family_xworm
C:\ProgramData\Synaptics\Synaptics.exe	family_xworm
behavioral2/memory/4692-113-0x00000000007F0000-0x0000000000806000-memory.dmp	family_xworm
behavioral2/memory/1896-130-0x0000000000400000-0x00000000004D0000-memory.dmp	family_xworm
behavioral2/memory/848-219-0x0000000000400000-0x00000000004D0000-memory.dmp	family_xworm
behavioral2/memory/848-293-0x0000000000400000-0x00000000004D0000-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/4692-228-0x000000001D790000-0x000000001D8B0000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty
Xred
Xred is backdoor written in Delphi.
backdoor xred
Xred family
xred
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
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:

FreeCheat.exeSynaptics.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	FreeCheat.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	Synaptics.exe

Drops startup file 2 IoCs

Processes:

._cache_FreeCheat.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost2.lnk	._cache_FreeCheat.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost2.lnk	._cache_FreeCheat.exe

Executes dropped EXE 3 IoCs

Processes:

._cache_FreeCheat.exeSynaptics.exe._cache_Synaptics.exe

pid process

4692 ._cache_FreeCheat.exe
848 Synaptics.exe
2036 ._cache_Synaptics.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

pid	process
4692	._cache_FreeCheat.exe
848	Synaptics.exe
2036	._cache_Synaptics.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

FreeCheat.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\????? = "C:\\ProgramData\\Synaptics\\Synaptics.exe"	FreeCheat.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

System Location Discovery: System Language Discovery 1 TTPs 2 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:

FreeCheat.exeSynaptics.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	FreeCheat.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Synaptics.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Modifies registry class 2 IoCs

Processes:

FreeCheat.exeSynaptics.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	FreeCheat.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Synaptics.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4984 EXCEL.EXE

pid	process
4984	EXCEL.EXE

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

._cache_FreeCheat.exe._cache_Synaptics.exe

description	pid	process
Token: SeDebugPrivilege	4692	._cache_FreeCheat.exe
Token: SeDebugPrivilege	2036	._cache_Synaptics.exe
Token: SeDebugPrivilege	4692	._cache_FreeCheat.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

EXCEL.EXE

pid process

4984 EXCEL.EXE
4984 EXCEL.EXE
4984 EXCEL.EXE
4984 EXCEL.EXE

pid	process
4984	EXCEL.EXE
4984	EXCEL.EXE
4984	EXCEL.EXE
4984	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

FreeCheat.exeSynaptics.exe

description	pid	process	target process
PID 1896 wrote to memory of 4692	1896	FreeCheat.exe	._cache_FreeCheat.exe
PID 1896 wrote to memory of 4692	1896	FreeCheat.exe	._cache_FreeCheat.exe
PID 1896 wrote to memory of 848	1896	FreeCheat.exe	Synaptics.exe
PID 1896 wrote to memory of 848	1896	FreeCheat.exe	Synaptics.exe
PID 1896 wrote to memory of 848	1896	FreeCheat.exe	Synaptics.exe
PID 848 wrote to memory of 2036	848	Synaptics.exe	._cache_Synaptics.exe
PID 848 wrote to memory of 2036	848	Synaptics.exe	._cache_Synaptics.exe

C:\Users\Admin\AppData\Local\Temp\FreeCheat.exe
"C:\Users\Admin\AppData\Local\Temp\FreeCheat.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1896
- C:\Users\Admin\AppData\Local\Temp\._cache_FreeCheat.exe
  "C:\Users\Admin\AppData\Local\Temp\._cache_FreeCheat.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:4692
- C:\ProgramData\Synaptics\Synaptics.exe
  "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:848
- - C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
    "C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe" InjUpdate
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2036

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" /automation -Embedding
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:4984

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

4

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

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Downloads

C:\ProgramData\Synaptics\Synaptics.exe

Filesize
809KB

MD5
94d86e51d8f55a38484c0147f5a4639a

SHA1
f3eb5147cca4067c43033280ab7b24b6843c7047

SHA256
2bd965f29bf25dfa230be112a130a519937c00e02c498dde8d67ae4d3258de99

SHA512
e26370075cc154c12388ff1cbdaa74643c020d21ae6e17d7a9ee0e49e8e7365e35c58e1cd8478fe6bf81f2475d9dbcfd1296f69f4e7324f57a6dd5d26ea26c71

Download Submit
C:\Users\Admin\AppData\Local\Temp\._cache_FreeCheat.exe

Filesize
64KB

MD5
975e2c659c3274245afbc696acb31fcf

SHA1
77484f030726f39b570ac4dce668684b01f9404d

SHA256
7fe3a83899c061a8195ee1e6e973019e3ced59762f91ff19998545a6beaa567e

SHA512
948301e8b908371a7a7fd20146004074652af3f35e0e1e9cacdda67ad921788e5571c49abc7a4f1600d7b0f0089404b48cc2b6d758115afaa2afe5d452ad098d

Download Submit
C:\Users\Admin\AppData\Local\Temp\W3gZXmdL.xlsm

Filesize
17KB

MD5
e566fc53051035e1e6fd0ed1823de0f9

SHA1
00bc96c48b98676ecd67e81a6f1d7754e4156044

SHA256
8e574b4ae6502230c0829e2319a6c146aebd51b7008bf5bbfb731424d7952c15

SHA512
a12f56ff30ea35381c2b8f8af2446cf1daa21ee872e98cad4b863db060acd4c33c5760918c277dadb7a490cb4ca2f925d59c70dc5171e16601a11bc4a6542b04

Download Submit
memory/848-293-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/848-219-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/848-131-0x0000000002130000-0x0000000002131000-memory.dmp

Filesize
4KB

Download
memory/848-218-0x0000000002130000-0x0000000002131000-memory.dmp

Filesize
4KB

Download
memory/1896-130-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/1896-0-0x0000000002370000-0x0000000002371000-memory.dmp

Filesize
4KB

Download
memory/4692-217-0x0000000000EE0000-0x0000000000EF0000-memory.dmp

Filesize
64KB

Download
memory/4692-113-0x00000000007F0000-0x0000000000806000-memory.dmp

Filesize
88KB

Download
memory/4692-70-0x00007FF9CE993000-0x00007FF9CE995000-memory.dmp

Filesize
8KB

Download
memory/4692-267-0x000000001CD10000-0x000000001CD32000-memory.dmp

Filesize
136KB

Download
memory/4692-228-0x000000001D790000-0x000000001D8B0000-memory.dmp

Filesize
1.1MB

Download
memory/4692-226-0x0000000000F00000-0x0000000000F0C000-memory.dmp

Filesize
48KB

Download
memory/4692-223-0x0000000000EE0000-0x0000000000EF0000-memory.dmp

Filesize
64KB

Download
memory/4984-198-0x00007FF9AB3F0000-0x00007FF9AB400000-memory.dmp

Filesize
64KB

Download
memory/4984-192-0x00007FF9ADC70000-0x00007FF9ADC80000-memory.dmp

Filesize
64KB

Download
memory/4984-196-0x00007FF9ADC70000-0x00007FF9ADC80000-memory.dmp

Filesize
64KB

Download
memory/4984-195-0x00007FF9ADC70000-0x00007FF9ADC80000-memory.dmp

Filesize
64KB

Download
memory/4984-194-0x00007FF9ADC70000-0x00007FF9ADC80000-memory.dmp

Filesize
64KB

Download
memory/4984-197-0x00007FF9AB3F0000-0x00007FF9AB400000-memory.dmp

Filesize
64KB

Download
memory/4984-193-0x00007FF9ADC70000-0x00007FF9ADC80000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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