stormkitty | 4c8bd4a1bdada3e9ff3a8cdb69948484733842c099f7bac5fc22c1aff00edf00

General

Target

4c8bd4a1bdada3e9ff3a8cdb69948484733842c099f7bac5fc22c1aff00edf00.exe
Size

1.6MB
MD5

7e2087055a8ab78c0025757274549257
SHA1

efa42811180edcf632a8a51a3a20093f67b65745
SHA256

4c8bd4a1bdada3e9ff3a8cdb69948484733842c099f7bac5fc22c1aff00edf00
SHA512

fd0da6cb646cc1fa24e29118f5d8d1ebb1da35cf4205a05dc39a3c5c250958641c85f4031d6e59df1a751030a0f5a946677f4d4b288a0b6da5767f4629b5e08b
SSDEEP

49152:7bdYAm4zrbdYAm4zobdYAm4zvbdYAm4zdbdYAm4zZbdYAm4zqgfa:ndr3drCdrzdrddrRdrqgi

Score

10^/10

stormkitty xworm discovery rat spyware stealer trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

laitxw2210.duckdns.org:7000

Mutex

WZLgN1c1YvVLdk2s

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2508-36-0x0000000000400000-0x0000000000415000-memory.dmp	family_xworm
behavioral1/memory/2508-34-0x0000000000400000-0x0000000000415000-memory.dmp	family_xworm
behavioral1/memory/2508-32-0x0000000000400000-0x0000000000415000-memory.dmp	family_xworm
behavioral1/memory/2508-40-0x0000000000400000-0x0000000000410000-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/2508-41-0x0000000006AE0000-0x0000000006BFE000-memory.dmp	family_stormkitty

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
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 SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1832 set thread context of 2508	1832	4c8bd4a1bdada3e9ff3a8cdb69948484733842c099f7bac5fc22c1aff00edf00.exe	30

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4c8bd4a1bdada3e9ff3a8cdb69948484733842c099f7bac5fc22c1aff00edf00.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regasm.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2508	regasm.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2508	regasm.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1832	4c8bd4a1bdada3e9ff3a8cdb69948484733842c099f7bac5fc22c1aff00edf00.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2508	regasm.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1832	4c8bd4a1bdada3e9ff3a8cdb69948484733842c099f7bac5fc22c1aff00edf00.exe
2508	regasm.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1832 wrote to memory of 2508	1832	4c8bd4a1bdada3e9ff3a8cdb69948484733842c099f7bac5fc22c1aff00edf00.exe	30
PID 1832 wrote to memory of 2508	1832	4c8bd4a1bdada3e9ff3a8cdb69948484733842c099f7bac5fc22c1aff00edf00.exe	30
PID 1832 wrote to memory of 2508	1832	4c8bd4a1bdada3e9ff3a8cdb69948484733842c099f7bac5fc22c1aff00edf00.exe	30
PID 1832 wrote to memory of 2508	1832	4c8bd4a1bdada3e9ff3a8cdb69948484733842c099f7bac5fc22c1aff00edf00.exe	30
PID 1832 wrote to memory of 2508	1832	4c8bd4a1bdada3e9ff3a8cdb69948484733842c099f7bac5fc22c1aff00edf00.exe	30
PID 1832 wrote to memory of 2508	1832	4c8bd4a1bdada3e9ff3a8cdb69948484733842c099f7bac5fc22c1aff00edf00.exe	30
PID 1832 wrote to memory of 2508	1832	4c8bd4a1bdada3e9ff3a8cdb69948484733842c099f7bac5fc22c1aff00edf00.exe	30
PID 1832 wrote to memory of 2508	1832	4c8bd4a1bdada3e9ff3a8cdb69948484733842c099f7bac5fc22c1aff00edf00.exe	30

C:\Users\Admin\AppData\Local\Temp\4c8bd4a1bdada3e9ff3a8cdb69948484733842c099f7bac5fc22c1aff00edf00.exe
"C:\Users\Admin\AppData\Local\Temp\4c8bd4a1bdada3e9ff3a8cdb69948484733842c099f7bac5fc22c1aff00edf00.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1832
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2508

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

1

T1217

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

Loading Replay Monitor...

Downloads

memory/1832-2-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/1832-8-0x000000007294A000-0x000000007294B000-memory.dmp

Filesize
4KB

Download
memory/1832-7-0x0000000000270000-0x0000000000370000-memory.dmp

Filesize
1024KB

Download
memory/1832-9-0x0000000072940000-0x0000000072A93000-memory.dmp

Filesize
1.3MB

Download
memory/1832-31-0x0000000072940000-0x0000000072A93000-memory.dmp

Filesize
1.3MB

Download
memory/1832-37-0x0000000072940000-0x0000000072A93000-memory.dmp

Filesize
1.3MB

Download
memory/1832-39-0x00000000003F0000-0x00000000003F8000-memory.dmp

Filesize
32KB

Download
memory/2508-36-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2508-34-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2508-32-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2508-40-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2508-41-0x0000000006AE0000-0x0000000006BFE000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing