stormkitty | bd986c62d058d7e75c7e6f15aa98876c91eba9e2eb4a0d182d0e43adf0af8eff

Analysis

max time kernel
121s
max time network
128s
platform
windows10_x64
resource
win10-en-20211014
submitted
06/11/2021, 13:35

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
Cat_Goes_Fishing.exe
Size 4.0MB
Sample211106-qvrm3abfgp
SHA256 bd986c62d058d7e75c7e6f15aa98876c91eba9e2eb4a0d182d0e43adf0af8eff
MD5 7b2ec21c3b3404a4f14880b48005d148
SHA1 1f1977d7cb499691a6df37fa04ed603c979659a8
SHA512 63396048caea4c9602f93a839bf5c47b475b4c7a268ffd002d53c6e1150dfacd793b9f4f5af9c5a06a6f16e06f9d6eaf4c3af1bf105ca9654d88e21c8f96d350
MD5 SHA1 SHA512

Score

10^/10

stormkitty persistence 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
behavioral2/memory/1776-474-0x000000000041423E-mapping.dmp	disable_win_def

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

StormKitty Payload 1 IoCs

resource	yara_rule
behavioral2/memory/1776-474-0x000000000041423E-mapping.dmp	family_stormkitty

Executes dropped EXE 5 IoCs

pid	Process
3004	CGF.exe
2244	setup1.exe
1296	setup2.exe
2276	setup1.exe
1776	setup2.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows\CurrentVersion\Run\nvidiaDValueOn = "C:\\Users\\Admin\\AppData\\Local\\NVIDIA Local Drivers\\DriversUpdateProcess_x64.exe"	setup2.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2244 set thread context of 2276	2244	setup1.exe	83
PID 1296 set thread context of 1776	1296	setup2.exe	86

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\AppCompat\Programs\Amcache.hve.tmp	WerFault.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1708	1776	WerFault.exe	86

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000_Classes\Local Settings	setup1.exe
Key created	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000_Classes\Local Settings	setup2.exe

Suspicious behavior: EnumeratesProcesses 36 IoCs

pid	Process
2244	setup1.exe
1296	setup2.exe
496	powershell.exe
496	powershell.exe
496	powershell.exe
1908	powershell.exe
1908	powershell.exe
1908	powershell.exe
3552	powershell.exe
3552	powershell.exe
3552	powershell.exe
2244	setup1.exe
2244	setup1.exe
2628	powershell.exe
2628	powershell.exe
2628	powershell.exe
1296	setup2.exe
1296	setup2.exe
360	powershell.exe
360	powershell.exe
360	powershell.exe
1708	WerFault.exe
1708	WerFault.exe
1708	WerFault.exe
1708	WerFault.exe
1708	WerFault.exe
1708	WerFault.exe
1708	WerFault.exe
1708	WerFault.exe
1708	WerFault.exe
1708	WerFault.exe
1708	WerFault.exe
1708	WerFault.exe
1708	WerFault.exe
1708	WerFault.exe
1708	WerFault.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2244	setup1.exe
Token: SeDebugPrivilege	1296	setup2.exe
Token: SeDebugPrivilege	496	powershell.exe
Token: SeIncreaseQuotaPrivilege	496	powershell.exe
Token: SeSecurityPrivilege	496	powershell.exe
Token: SeTakeOwnershipPrivilege	496	powershell.exe
Token: SeLoadDriverPrivilege	496	powershell.exe
Token: SeSystemProfilePrivilege	496	powershell.exe
Token: SeSystemtimePrivilege	496	powershell.exe
Token: SeProfSingleProcessPrivilege	496	powershell.exe
Token: SeIncBasePriorityPrivilege	496	powershell.exe
Token: SeCreatePagefilePrivilege	496	powershell.exe
Token: SeBackupPrivilege	496	powershell.exe
Token: SeRestorePrivilege	496	powershell.exe
Token: SeShutdownPrivilege	496	powershell.exe
Token: SeDebugPrivilege	496	powershell.exe
Token: SeSystemEnvironmentPrivilege	496	powershell.exe
Token: SeRemoteShutdownPrivilege	496	powershell.exe
Token: SeUndockPrivilege	496	powershell.exe
Token: SeManageVolumePrivilege	496	powershell.exe
Token: 33	496	powershell.exe
Token: 34	496	powershell.exe
Token: 35	496	powershell.exe
Token: 36	496	powershell.exe
Token: SeIncreaseQuotaPrivilege	496	powershell.exe
Token: SeSecurityPrivilege	496	powershell.exe
Token: SeTakeOwnershipPrivilege	496	powershell.exe
Token: SeLoadDriverPrivilege	496	powershell.exe
Token: SeSystemProfilePrivilege	496	powershell.exe
Token: SeSystemtimePrivilege	496	powershell.exe
Token: SeProfSingleProcessPrivilege	496	powershell.exe
Token: SeIncBasePriorityPrivilege	496	powershell.exe
Token: SeCreatePagefilePrivilege	496	powershell.exe
Token: SeBackupPrivilege	496	powershell.exe
Token: SeRestorePrivilege	496	powershell.exe
Token: SeShutdownPrivilege	496	powershell.exe
Token: SeDebugPrivilege	496	powershell.exe
Token: SeSystemEnvironmentPrivilege	496	powershell.exe
Token: SeRemoteShutdownPrivilege	496	powershell.exe
Token: SeUndockPrivilege	496	powershell.exe
Token: SeManageVolumePrivilege	496	powershell.exe
Token: 33	496	powershell.exe
Token: 34	496	powershell.exe
Token: 35	496	powershell.exe
Token: 36	496	powershell.exe
Token: SeDebugPrivilege	1908	powershell.exe
Token: SeIncreaseQuotaPrivilege	1908	powershell.exe
Token: SeSecurityPrivilege	1908	powershell.exe
Token: SeTakeOwnershipPrivilege	1908	powershell.exe
Token: SeLoadDriverPrivilege	1908	powershell.exe
Token: SeSystemProfilePrivilege	1908	powershell.exe
Token: SeSystemtimePrivilege	1908	powershell.exe
Token: SeProfSingleProcessPrivilege	1908	powershell.exe
Token: SeIncBasePriorityPrivilege	1908	powershell.exe
Token: SeCreatePagefilePrivilege	1908	powershell.exe
Token: SeBackupPrivilege	1908	powershell.exe
Token: SeRestorePrivilege	1908	powershell.exe
Token: SeShutdownPrivilege	1908	powershell.exe
Token: SeDebugPrivilege	1908	powershell.exe
Token: SeSystemEnvironmentPrivilege	1908	powershell.exe
Token: SeRemoteShutdownPrivilege	1908	powershell.exe
Token: SeUndockPrivilege	1908	powershell.exe
Token: SeManageVolumePrivilege	1908	powershell.exe
Token: 33	1908	powershell.exe

Suspicious use of WriteProcessMemory 46 IoCs

description	pid	Process	procid_target
PID 2636 wrote to memory of 3004	2636	Cat_Goes_Fishing.exe	68
PID 2636 wrote to memory of 3004	2636	Cat_Goes_Fishing.exe	68
PID 2636 wrote to memory of 3004	2636	Cat_Goes_Fishing.exe	68
PID 2636 wrote to memory of 2244	2636	Cat_Goes_Fishing.exe	70
PID 2636 wrote to memory of 2244	2636	Cat_Goes_Fishing.exe	70
PID 2636 wrote to memory of 1296	2636	Cat_Goes_Fishing.exe	71
PID 2636 wrote to memory of 1296	2636	Cat_Goes_Fishing.exe	71
PID 2636 wrote to memory of 1296	2636	Cat_Goes_Fishing.exe	71
PID 1296 wrote to memory of 496	1296	setup2.exe	72
PID 1296 wrote to memory of 496	1296	setup2.exe	72
PID 1296 wrote to memory of 496	1296	setup2.exe	72
PID 1296 wrote to memory of 1908	1296	setup2.exe	75
PID 1296 wrote to memory of 1908	1296	setup2.exe	75
PID 1296 wrote to memory of 1908	1296	setup2.exe	75
PID 1296 wrote to memory of 3552	1296	setup2.exe	78
PID 1296 wrote to memory of 3552	1296	setup2.exe	78
PID 1296 wrote to memory of 3552	1296	setup2.exe	78
PID 2244 wrote to memory of 3772	2244	setup1.exe	80
PID 2244 wrote to memory of 3772	2244	setup1.exe	80
PID 3772 wrote to memory of 2628	3772	WScript.exe	81
PID 3772 wrote to memory of 2628	3772	WScript.exe	81
PID 2244 wrote to memory of 2276	2244	setup1.exe	83
PID 2244 wrote to memory of 2276	2244	setup1.exe	83
PID 2244 wrote to memory of 2276	2244	setup1.exe	83
PID 2244 wrote to memory of 2276	2244	setup1.exe	83
PID 2244 wrote to memory of 2276	2244	setup1.exe	83
PID 2244 wrote to memory of 2276	2244	setup1.exe	83
PID 2244 wrote to memory of 2276	2244	setup1.exe	83
PID 2244 wrote to memory of 2276	2244	setup1.exe	83
PID 1296 wrote to memory of 1316	1296	setup2.exe	85
PID 1296 wrote to memory of 1316	1296	setup2.exe	85
PID 1296 wrote to memory of 1316	1296	setup2.exe	85
PID 1296 wrote to memory of 1776	1296	setup2.exe	86
PID 1296 wrote to memory of 1776	1296	setup2.exe	86
PID 1296 wrote to memory of 1776	1296	setup2.exe	86
PID 1296 wrote to memory of 1776	1296	setup2.exe	86
PID 1296 wrote to memory of 1776	1296	setup2.exe	86
PID 1296 wrote to memory of 1776	1296	setup2.exe	86
PID 1296 wrote to memory of 1776	1296	setup2.exe	86
PID 1296 wrote to memory of 1776	1296	setup2.exe	86
PID 1316 wrote to memory of 360	1316	WScript.exe	87
PID 1316 wrote to memory of 360	1316	WScript.exe	87
PID 1316 wrote to memory of 360	1316	WScript.exe	87
PID 2276 wrote to memory of 2188	2276	setup1.exe	91
PID 2276 wrote to memory of 2188	2276	setup1.exe	91
PID 2276 wrote to memory of 2188	2276	setup1.exe	91

C:\Users\Admin\AppData\Local\Temp\Cat_Goes_Fishing.exe
"C:\Users\Admin\AppData\Local\Temp\Cat_Goes_Fishing.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2636
- C:\Users\Admin\AppData\Local\Temp\CGF.exe
  "C:\Users\Admin\AppData\Local\Temp\CGF.exe"
  2⤵
  - Executes dropped EXE
  PID:3004
- C:\Users\Admin\AppData\Local\Temp\setup1.exe
  "C:\Users\Admin\AppData\Local\Temp\setup1.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2244
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\_Mypwxtqgwytqqebll.vbs"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3772
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -ExclusionPath C:\,'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\HyperX\HyperXDriver.exe'
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2628
- - C:\Users\Admin\AppData\Local\Temp\setup1.exe
    C:\Users\Admin\AppData\Local\Temp\setup1.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:2276
  - - C:\Windows\System32\conhost.exe
      "C:\Windows\System32\conhost.exe" "C:\Users\Admin\AppData\Local\Temp\setup1.exe"
      4⤵
      PID:2188
- C:\Users\Admin\AppData\Local\Temp\setup2.exe
  "C:\Users\Admin\AppData\Local\Temp\setup2.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1296
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Test-Connection www.facebook.com
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:496
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Test-Connection www.twitter.com
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1908
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Test-Connection www.youtube.com
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:3552
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\_Gmhntzjcyvlijt.vbs"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1316
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -ExclusionPath C:\,'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\HyperX\Driver.exe'
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:360
- - C:\Users\Admin\AppData\Local\Temp\setup2.exe
    C:\Users\Admin\AppData\Local\Temp\setup2.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    PID:1776
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1776 -s 1332
      4⤵
      Drops file in Windows directory
      Program crash
      Suspicious behavior: EnumeratesProcesses
      PID:1708

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/360-493-0x0000000007280000-0x0000000007281000-memory.dmp

Download

memory/360-494-0x0000000007282000-0x0000000007283000-memory.dmp

Download

memory/360-528-0x0000000007283000-0x0000000007284000-memory.dmp

Download

memory/360-531-0x000000007F580000-0x000000007F581000-memory.dmp

Download

memory/496-136-0x00000000075C0000-0x00000000075C1000-memory.dmp

Download

memory/496-152-0x0000000009290000-0x0000000009291000-memory.dmp

Download

memory/496-140-0x0000000007D60000-0x0000000007D61000-memory.dmp

Download

memory/496-141-0x0000000007520000-0x0000000007521000-memory.dmp

Download

memory/496-142-0x0000000007E50000-0x0000000007E51000-memory.dmp

Download

memory/496-143-0x0000000007D40000-0x0000000007D41000-memory.dmp

Download

memory/496-144-0x0000000008750000-0x0000000008751000-memory.dmp

Download

memory/496-145-0x0000000008520000-0x0000000008521000-memory.dmp

Download

memory/496-146-0x0000000004900000-0x0000000004901000-memory.dmp

Download

memory/496-150-0x00000000094E0000-0x00000000094E1000-memory.dmp

Download

memory/496-151-0x0000000009240000-0x0000000009241000-memory.dmp

Download

memory/496-135-0x0000000004A40000-0x0000000004A41000-memory.dmp

Download

memory/496-153-0x0000000009A80000-0x0000000009A81000-memory.dmp

Download

memory/496-156-0x00000000049F3000-0x00000000049F4000-memory.dmp

Download

memory/496-161-0x000000000A600000-0x000000000A601000-memory.dmp

Download

memory/496-134-0x0000000004900000-0x0000000004901000-memory.dmp

Download

memory/496-137-0x00000000049F0000-0x00000000049F1000-memory.dmp

Download

memory/496-138-0x00000000049F2000-0x00000000049F3000-memory.dmp

Download

memory/496-133-0x0000000004900000-0x0000000004901000-memory.dmp

Download

memory/496-139-0x0000000007480000-0x0000000007481000-memory.dmp

Download

memory/1296-132-0x0000000005480000-0x0000000005481000-memory.dmp

Download

memory/1296-129-0x0000000000AA0000-0x0000000000AA1000-memory.dmp

Download

memory/1776-492-0x0000000005310000-0x0000000005311000-memory.dmp

Download

memory/1908-275-0x0000000006723000-0x0000000006724000-memory.dmp

Download

memory/1908-242-0x0000000006720000-0x0000000006721000-memory.dmp

Download

memory/1908-243-0x0000000006722000-0x0000000006723000-memory.dmp

Download

memory/2188-530-0x000002D0EA9F6000-0x000002D0EA9F7000-memory.dmp

Download

memory/2188-529-0x000002D0EA9F3000-0x000002D0EA9F5000-memory.dmp

Download

memory/2188-527-0x000002D0EA9F0000-0x000002D0EA9F2000-memory.dmp

Download

memory/2188-498-0x000002D0E8170000-0x000002D0E8358000-memory.dmp

Download

memory/2244-123-0x0000000000A00000-0x0000000000A01000-memory.dmp

Download

memory/2244-128-0x000000001C920000-0x000000001C922000-memory.dmp

Download

memory/2244-438-0x000000001C922000-0x000000001C924000-memory.dmp

Download

memory/2244-442-0x000000001C924000-0x000000001C925000-memory.dmp

Download

memory/2276-443-0x0000000000400000-0x00000000005EE000-memory.dmp

Download

memory/2628-468-0x000001CEDF278000-0x000001CEDF279000-memory.dmp

Download

memory/2628-439-0x000001CEDF270000-0x000001CEDF272000-memory.dmp

Download

memory/2628-462-0x000001CEDF276000-0x000001CEDF278000-memory.dmp

Download

memory/2628-441-0x000001CEDF273000-0x000001CEDF275000-memory.dmp

Download

memory/2636-115-0x0000000002BD0000-0x0000000002BD1000-memory.dmp

Download

memory/2636-116-0x0000000002BD0000-0x0000000002BD1000-memory.dmp

Download

memory/3552-330-0x00000000049B0000-0x00000000049B1000-memory.dmp

Download

memory/3552-357-0x00000000049B3000-0x00000000049B4000-memory.dmp

Download

memory/3552-331-0x00000000049B2000-0x00000000049B3000-memory.dmp

Download