blustealer | 45035676e4441c255385a1436d86540859459f5b1f3105e7a21bc9c07057276c

General

Target

Invoice no. 004.exe
Size

626KB
MD5

5500eeff820e3f9518f14ac32df4e735
SHA1

25af6b1565154eac95865b9db7944b9bbc842493
SHA256

45035676e4441c255385a1436d86540859459f5b1f3105e7a21bc9c07057276c
SHA512

79579fbacb4d138e39b73ccdc0a0dcc5683c7abe55691ca8f35e8c55001fd9d801122b5b9b8a5e5e64fef1e4a6508fd1bf84547bb09cc37a1c9fa6787bb2edef

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Signatures

BluStealer
A Modular information stealer written in Visual Basic.
stealer blustealer
StormKitty
StormKitty is an open source info stealer written in C#.
stealer stormkitty

StormKitty payload 4 IoCs

resource	yara_rule
behavioral1/memory/924-79-0x00000000000A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/924-78-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/924-81-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/924-83-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.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
6	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1856 set thread context of 904	1856	Invoice no. 004.exe	30
PID 904 set thread context of 924	904	Invoice no. 004.exe	31

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 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

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

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1920	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1856	Invoice no. 004.exe
1856	Invoice no. 004.exe
1856	Invoice no. 004.exe
1856	Invoice no. 004.exe
1856	Invoice no. 004.exe
1856	Invoice no. 004.exe
1284	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1856	Invoice no. 004.exe
Token: SeDebugPrivilege	1284	powershell.exe
Token: SeDebugPrivilege	924	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
904	Invoice no. 004.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1856 wrote to memory of 1284	1856	Invoice no. 004.exe	26
PID 1856 wrote to memory of 1284	1856	Invoice no. 004.exe	26
PID 1856 wrote to memory of 1284	1856	Invoice no. 004.exe	26
PID 1856 wrote to memory of 1284	1856	Invoice no. 004.exe	26
PID 1856 wrote to memory of 1920	1856	Invoice no. 004.exe	28
PID 1856 wrote to memory of 1920	1856	Invoice no. 004.exe	28
PID 1856 wrote to memory of 1920	1856	Invoice no. 004.exe	28
PID 1856 wrote to memory of 1920	1856	Invoice no. 004.exe	28
PID 1856 wrote to memory of 904	1856	Invoice no. 004.exe	30
PID 1856 wrote to memory of 904	1856	Invoice no. 004.exe	30
PID 1856 wrote to memory of 904	1856	Invoice no. 004.exe	30
PID 1856 wrote to memory of 904	1856	Invoice no. 004.exe	30
PID 1856 wrote to memory of 904	1856	Invoice no. 004.exe	30
PID 1856 wrote to memory of 904	1856	Invoice no. 004.exe	30
PID 1856 wrote to memory of 904	1856	Invoice no. 004.exe	30
PID 1856 wrote to memory of 904	1856	Invoice no. 004.exe	30
PID 1856 wrote to memory of 904	1856	Invoice no. 004.exe	30
PID 904 wrote to memory of 924	904	Invoice no. 004.exe	31
PID 904 wrote to memory of 924	904	Invoice no. 004.exe	31
PID 904 wrote to memory of 924	904	Invoice no. 004.exe	31
PID 904 wrote to memory of 924	904	Invoice no. 004.exe	31
PID 904 wrote to memory of 924	904	Invoice no. 004.exe	31
PID 904 wrote to memory of 924	904	Invoice no. 004.exe	31
PID 904 wrote to memory of 924	904	Invoice no. 004.exe	31
PID 904 wrote to memory of 924	904	Invoice no. 004.exe	31
PID 904 wrote to memory of 924	904	Invoice no. 004.exe	31

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Invoice no. 004.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice no. 004.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1856
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\hpUATicOQr.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1284
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hpUATicOQr" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3D9D.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1920
- C:\Users\Admin\AppData\Local\Temp\Invoice no. 004.exe
  "C:\Users\Admin\AppData\Local\Temp\Invoice no. 004.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:904
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    3⤵
    - Accesses Microsoft Outlook profiles
    - Checks processor information in registry
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:924

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3D9D.tmp

Filesize
1KB

MD5
3a514c79118ee61028cc15b6446624d0

SHA1
35c838dc1d5d00413dfbb6be79403cef1393bf30

SHA256
655ef97b27f65cad42fbfac8185ce20f8696c647462d6cd40d352c5d2a0ac30a

SHA512
2f6dfaa9a0b8858506b7cc4b99b4ba4df86cb63440bd91480b0da42d593f57bb07a66a28fe3fd0fa8233f308c4f2d0b3f2ad4b086f17d747f7887a6e7204990d

Download Submit
memory/904-64-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/904-88-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/904-85-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/904-72-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/904-65-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/904-69-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/904-67-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/924-81-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/924-83-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/924-78-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/924-76-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1284-86-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/1284-87-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/1856-57-0x0000000000500000-0x000000000050A000-memory.dmp

Filesize
40KB

Download
memory/1856-58-0x0000000005160000-0x00000000051D6000-memory.dmp

Filesize
472KB

Download
memory/1856-54-0x0000000000950000-0x00000000009F4000-memory.dmp

Filesize
656KB

Download
memory/1856-63-0x0000000002290000-0x00000000022BC000-memory.dmp

Filesize
176KB

Download
memory/1856-56-0x00000000004E0000-0x00000000004F6000-memory.dmp

Filesize
88KB

Download
memory/1856-55-0x00000000761D1000-0x00000000761D3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads