stormkitty | 5dd39fa32d0446752e1e77f66e0d1fb32223feba4bf21ea3551a9f84a01e320c

Analysis

max time kernel
150s
max time network
152s
platform
windows10_x64
resource
win10v20210410
submitted
09/06/2021, 12:59

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General

Target
QUOTATION.exe
Size 265KB
Sample210609-qftytcmkd6
SHA256 5dd39fa32d0446752e1e77f66e0d1fb32223feba4bf21ea3551a9f84a01e320c
MD5 b96b296fea4bc13b18d998e9fe6d386d
SHA1 de7a2afc4a96c28b96af4f9df2edb840332a93e4
SHA512 7fa19b22c9d2681e0cb9341a6a0bcafbd18c99e6cb937517101517014098fa37a17ef0cbaa308e07bade8fde95a0a1fff2973b529d312ddd8389f012e06b8870
MD5 SHA1 SHA512

Score

10^/10

stormkitty persistence spyware stealer

Malware Config

Signatures

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

StormKitty Payload 4 IoCs

resource	yara_rule
behavioral2/memory/2632-119-0x0000000000400000-0x0000000000418000-memory.dmp	family_stormkitty
behavioral2/memory/2632-120-0x0000000000412452-mapping.dmp	family_stormkitty
behavioral2/memory/412-128-0x0000000000412452-mapping.dmp	family_stormkitty
behavioral2/memory/2440-137-0x0000000000412452-mapping.dmp	family_stormkitty

Executes dropped EXE 3 IoCs

pid	Process
3028	MZ.exe
640	MZ.exe
4084	MZ.exe

Loads dropped DLL 2 IoCs

pid	Process
3656	QUOTATION.exe
3656	QUOTATION.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
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

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-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\nfvrxvafc = "C:\\Users\\Admin\\AppData\\Roaming\\dxtyc\\ofrlsoenpm.exe"	QUOTATION.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
11	icanhazip.com

Looks up geolocation information via web service
Uses a legitimate geolocation service to find the infected system's geolocation info.

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 3656 set thread context of 1580	3656	QUOTATION.exe	74
PID 1580 set thread context of 2632	1580	QUOTATION.exe	76
PID 1580 set thread context of 412	1580	QUOTATION.exe	82
PID 1580 set thread context of 2440	1580	QUOTATION.exe	84

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 6 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	InstallUtil.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	InstallUtil.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	InstallUtil.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	InstallUtil.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	InstallUtil.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
3656	QUOTATION.exe
3656	QUOTATION.exe
3656	QUOTATION.exe
3656	QUOTATION.exe
3656	QUOTATION.exe
3656	QUOTATION.exe
3656	QUOTATION.exe
3656	QUOTATION.exe
3028	MZ.exe
3028	MZ.exe
640	MZ.exe
640	MZ.exe
4084	MZ.exe
4084	MZ.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1580	QUOTATION.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3656	QUOTATION.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2632	InstallUtil.exe
Token: SeDebugPrivilege	3028	MZ.exe
Token: SeDebugPrivilege	412	InstallUtil.exe
Token: SeDebugPrivilege	640	MZ.exe
Token: SeDebugPrivilege	2440	InstallUtil.exe
Token: SeDebugPrivilege	4084	MZ.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1580	QUOTATION.exe
1580	QUOTATION.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 3656 wrote to memory of 1580	3656	QUOTATION.exe	74
PID 3656 wrote to memory of 1580	3656	QUOTATION.exe	74
PID 3656 wrote to memory of 1580	3656	QUOTATION.exe	74
PID 3656 wrote to memory of 1580	3656	QUOTATION.exe	74
PID 1580 wrote to memory of 2632	1580	QUOTATION.exe	76
PID 1580 wrote to memory of 2632	1580	QUOTATION.exe	76
PID 1580 wrote to memory of 2632	1580	QUOTATION.exe	76
PID 1580 wrote to memory of 2632	1580	QUOTATION.exe	76
PID 1580 wrote to memory of 2632	1580	QUOTATION.exe	76
PID 1580 wrote to memory of 2632	1580	QUOTATION.exe	76
PID 1580 wrote to memory of 2632	1580	QUOTATION.exe	76
PID 1580 wrote to memory of 2632	1580	QUOTATION.exe	76
PID 2632 wrote to memory of 3028	2632	InstallUtil.exe	80
PID 2632 wrote to memory of 3028	2632	InstallUtil.exe	80
PID 1580 wrote to memory of 412	1580	QUOTATION.exe	82
PID 1580 wrote to memory of 412	1580	QUOTATION.exe	82
PID 1580 wrote to memory of 412	1580	QUOTATION.exe	82
PID 1580 wrote to memory of 412	1580	QUOTATION.exe	82
PID 1580 wrote to memory of 412	1580	QUOTATION.exe	82
PID 1580 wrote to memory of 412	1580	QUOTATION.exe	82
PID 1580 wrote to memory of 412	1580	QUOTATION.exe	82
PID 1580 wrote to memory of 412	1580	QUOTATION.exe	82
PID 412 wrote to memory of 640	412	InstallUtil.exe	83
PID 412 wrote to memory of 640	412	InstallUtil.exe	83
PID 1580 wrote to memory of 2440	1580	QUOTATION.exe	84
PID 1580 wrote to memory of 2440	1580	QUOTATION.exe	84
PID 1580 wrote to memory of 2440	1580	QUOTATION.exe	84
PID 1580 wrote to memory of 2440	1580	QUOTATION.exe	84
PID 1580 wrote to memory of 2440	1580	QUOTATION.exe	84
PID 1580 wrote to memory of 2440	1580	QUOTATION.exe	84
PID 1580 wrote to memory of 2440	1580	QUOTATION.exe	84
PID 1580 wrote to memory of 2440	1580	QUOTATION.exe	84
PID 2440 wrote to memory of 4084	2440	InstallUtil.exe	85
PID 2440 wrote to memory of 4084	2440	InstallUtil.exe	85

C:\Users\Admin\AppData\Local\Temp\QUOTATION.exe
"C:\Users\Admin\AppData\Local\Temp\QUOTATION.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3656
- C:\Users\Admin\AppData\Local\Temp\QUOTATION.exe
  "C:\Users\Admin\AppData\Local\Temp\QUOTATION.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1580
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe"
    3⤵
    - Checks processor information in registry
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2632
  - - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3028
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe"
    3⤵
    - Checks processor information in registry
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:412
  - - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:640
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe"
    3⤵
    - Checks processor information in registry
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2440
  - - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4084

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

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/412-130-0x00000000028D0000-0x00000000028D1000-memory.dmp

Download

memory/640-135-0x0000000003180000-0x0000000003182000-memory.dmp

Download

memory/1580-121-0x0000000000400000-0x0000000000430000-memory.dmp

Download

memory/2440-138-0x0000000002A80000-0x0000000002A81000-memory.dmp

Download

memory/2632-122-0x00000000031D0000-0x00000000031D1000-memory.dmp

Download

memory/2632-119-0x0000000000400000-0x0000000000418000-memory.dmp

Download

memory/3028-126-0x00000000028E0000-0x00000000028E2000-memory.dmp

Download

memory/4084-142-0x0000000001450000-0x0000000001452000-memory.dmp

Download