stormkitty | 7a15a21c229fd3f9a2a18f2bb13bf2845a76a3822914c751174b1aa98303b8e8

Analysis

max time kernel
150s
max time network
112s
platform
windows10_x64
resource
win10v20201028
submitted
12-04-2021 06:13

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General

Target

00000998880.exe
Size

1.1MB
MD5

b75196ccea3a4ed66a87e7a98595b27f
SHA1

db65efb2c2f426165479a6b9f70700d61f56b6e2
SHA256

7a15a21c229fd3f9a2a18f2bb13bf2845a76a3822914c751174b1aa98303b8e8
SHA512

2b23d1b83ecf18cc7ca5cb581691e17704f48320d43e849a527ce5079082c048a35eabb00cc40bf9fd1f207ea1f870de560b283742e8d47228666ed2aa4d49a1

Score

10^/10

stormkitty spyware stealer

Malware Config

Signatures

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

StormKitty Payload 2 IoCs

resource	yara_rule
behavioral2/memory/2716-119-0x0000000000400000-0x00000000004B2000-memory.dmp	family_stormkitty
behavioral2/memory/2716-120-0x00000000004A734E-mapping.dmp	family_stormkitty

Loads dropped DLL 1 IoCs

pid	Process
3108	00000998880.exe

Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of SetThreadContext 7 IoCs

description	pid	Process	procid_target
PID 3108 set thread context of 2188	3108	00000998880.exe	74
PID 2188 set thread context of 2716	2188	00000998880.exe	76
PID 2188 set thread context of 2792	2188	00000998880.exe	77
PID 2188 set thread context of 1940	2188	00000998880.exe	84
PID 2188 set thread context of 2888	2188	00000998880.exe	86
PID 2188 set thread context of 3976	2188	00000998880.exe	87
PID 2188 set thread context of 3980	2188	00000998880.exe	89

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 5 IoCs

pid	pid_target	Process	procid_target
3508	2792	WerFault.exe	77
1732	2716	WerFault.exe	76
556	1940	WerFault.exe	84
1444	2888	WerFault.exe	86
2344	3980	WerFault.exe	89

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1732	WerFault.exe
1732	WerFault.exe
1732	WerFault.exe
1732	WerFault.exe
1732	WerFault.exe
1732	WerFault.exe
1732	WerFault.exe
1732	WerFault.exe
1732	WerFault.exe
1732	WerFault.exe
1732	WerFault.exe
1732	WerFault.exe
1732	WerFault.exe
1732	WerFault.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2188	00000998880.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3108	00000998880.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	1732	WerFault.exe
Token: SeBackupPrivilege	1732	WerFault.exe
Token: SeDebugPrivilege	1732	WerFault.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2188	00000998880.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2188	00000998880.exe
2188	00000998880.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 3108 wrote to memory of 2188	3108	00000998880.exe	74
PID 3108 wrote to memory of 2188	3108	00000998880.exe	74
PID 3108 wrote to memory of 2188	3108	00000998880.exe	74
PID 3108 wrote to memory of 2188	3108	00000998880.exe	74
PID 2188 wrote to memory of 2716	2188	00000998880.exe	76
PID 2188 wrote to memory of 2716	2188	00000998880.exe	76
PID 2188 wrote to memory of 2716	2188	00000998880.exe	76
PID 2188 wrote to memory of 2716	2188	00000998880.exe	76
PID 2188 wrote to memory of 2716	2188	00000998880.exe	76
PID 2188 wrote to memory of 2716	2188	00000998880.exe	76
PID 2188 wrote to memory of 2716	2188	00000998880.exe	76
PID 2188 wrote to memory of 2716	2188	00000998880.exe	76
PID 2188 wrote to memory of 2792	2188	00000998880.exe	77
PID 2188 wrote to memory of 2792	2188	00000998880.exe	77
PID 2188 wrote to memory of 2792	2188	00000998880.exe	77
PID 2188 wrote to memory of 2792	2188	00000998880.exe	77
PID 2188 wrote to memory of 1940	2188	00000998880.exe	84
PID 2188 wrote to memory of 1940	2188	00000998880.exe	84
PID 2188 wrote to memory of 1940	2188	00000998880.exe	84
PID 2188 wrote to memory of 1940	2188	00000998880.exe	84
PID 2188 wrote to memory of 2888	2188	00000998880.exe	86
PID 2188 wrote to memory of 2888	2188	00000998880.exe	86
PID 2188 wrote to memory of 2888	2188	00000998880.exe	86
PID 2188 wrote to memory of 2888	2188	00000998880.exe	86
PID 2188 wrote to memory of 3976	2188	00000998880.exe	87
PID 2188 wrote to memory of 3976	2188	00000998880.exe	87
PID 2188 wrote to memory of 3976	2188	00000998880.exe	87
PID 2188 wrote to memory of 3976	2188	00000998880.exe	87
PID 2188 wrote to memory of 3976	2188	00000998880.exe	87
PID 2188 wrote to memory of 3976	2188	00000998880.exe	87
PID 2188 wrote to memory of 3976	2188	00000998880.exe	87
PID 2188 wrote to memory of 3976	2188	00000998880.exe	87
PID 2188 wrote to memory of 3980	2188	00000998880.exe	89
PID 2188 wrote to memory of 3980	2188	00000998880.exe	89
PID 2188 wrote to memory of 3980	2188	00000998880.exe	89
PID 2188 wrote to memory of 3980	2188	00000998880.exe	89

C:\Users\Admin\AppData\Local\Temp\00000998880.exe
"C:\Users\Admin\AppData\Local\Temp\00000998880.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3108
- C:\Users\Admin\AppData\Local\Temp\00000998880.exe
  "C:\Users\Admin\AppData\Local\Temp\00000998880.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2188
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
    3⤵
    PID:2716
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2716 -s 932
      4⤵
      Program crash
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1732
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
    3⤵
    PID:2792
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2792 -s 88
      4⤵
      Program crash
      PID:3508
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
    3⤵
    PID:1940
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1940 -s 88
      4⤵
      Program crash
      PID:556
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
    3⤵
    PID:2888
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2888 -s 88
      4⤵
      Program crash
      PID:1444
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
    3⤵
    PID:3976
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
    3⤵
    PID:3980
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3980 -s 88
      4⤵
      Program crash
      PID:2344

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2188-118-0x0000000000400000-0x00000000004CF000-memory.dmp

Filesize
828KB

Download
memory/2716-119-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2716-128-0x0000000009450000-0x0000000009451000-memory.dmp

Filesize
4KB

Download
memory/2716-129-0x0000000009560000-0x0000000009561000-memory.dmp

Filesize
4KB

Download
memory/2716-183-0x0000000009750000-0x0000000009751000-memory.dmp

Filesize
4KB

Download