blustealer | 3909f1e1d41d36e0f62bd770841a0a8ea28c2b7d52f2e2fc77457538fbd7a291

General

Target

Revised shipment.pdf.exe
Size

706KB
MD5

f79203454fd766c8189d00c43cfc7485
SHA1

fe44898d206f0b4ef9497e7b7b2e9dedcd4335aa
SHA256

3909f1e1d41d36e0f62bd770841a0a8ea28c2b7d52f2e2fc77457538fbd7a291
SHA512

2b88a745ec24591e5a5b28ade1470416a6bfe2bed86383c276736d0142ddae64bf985cd84772ac00512868f1741f3a7cab555a7a53f95eb5408a582d0fbb8ad1

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/1392-80-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1392-81-0x00000000000A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/1392-85-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1392-83-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\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
4	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1924 set thread context of 456	1924	Revised shipment.pdf.exe	31
PID 456 set thread context of 1392	456	Revised shipment.pdf.exe	32

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
1360	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1924	Revised shipment.pdf.exe
1924	Revised shipment.pdf.exe
1924	Revised shipment.pdf.exe
1924	Revised shipment.pdf.exe
1924	Revised shipment.pdf.exe
1924	Revised shipment.pdf.exe
1384	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1924	Revised shipment.pdf.exe
Token: SeDebugPrivilege	1384	powershell.exe
Token: SeDebugPrivilege	1392	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
456	Revised shipment.pdf.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 1384	1924	Revised shipment.pdf.exe	27
PID 1924 wrote to memory of 1384	1924	Revised shipment.pdf.exe	27
PID 1924 wrote to memory of 1384	1924	Revised shipment.pdf.exe	27
PID 1924 wrote to memory of 1384	1924	Revised shipment.pdf.exe	27
PID 1924 wrote to memory of 1360	1924	Revised shipment.pdf.exe	29
PID 1924 wrote to memory of 1360	1924	Revised shipment.pdf.exe	29
PID 1924 wrote to memory of 1360	1924	Revised shipment.pdf.exe	29
PID 1924 wrote to memory of 1360	1924	Revised shipment.pdf.exe	29
PID 1924 wrote to memory of 456	1924	Revised shipment.pdf.exe	31
PID 1924 wrote to memory of 456	1924	Revised shipment.pdf.exe	31
PID 1924 wrote to memory of 456	1924	Revised shipment.pdf.exe	31
PID 1924 wrote to memory of 456	1924	Revised shipment.pdf.exe	31
PID 1924 wrote to memory of 456	1924	Revised shipment.pdf.exe	31
PID 1924 wrote to memory of 456	1924	Revised shipment.pdf.exe	31
PID 1924 wrote to memory of 456	1924	Revised shipment.pdf.exe	31
PID 1924 wrote to memory of 456	1924	Revised shipment.pdf.exe	31
PID 1924 wrote to memory of 456	1924	Revised shipment.pdf.exe	31
PID 456 wrote to memory of 1392	456	Revised shipment.pdf.exe	32
PID 456 wrote to memory of 1392	456	Revised shipment.pdf.exe	32
PID 456 wrote to memory of 1392	456	Revised shipment.pdf.exe	32
PID 456 wrote to memory of 1392	456	Revised shipment.pdf.exe	32
PID 456 wrote to memory of 1392	456	Revised shipment.pdf.exe	32
PID 456 wrote to memory of 1392	456	Revised shipment.pdf.exe	32
PID 456 wrote to memory of 1392	456	Revised shipment.pdf.exe	32
PID 456 wrote to memory of 1392	456	Revised shipment.pdf.exe	32
PID 456 wrote to memory of 1392	456	Revised shipment.pdf.exe	32

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Revised shipment.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Revised shipment.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1924
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\vEOwgfttl.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1384
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vEOwgfttl" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEA60.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1360
- C:\Users\Admin\AppData\Local\Temp\Revised shipment.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Revised shipment.pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:456
- - 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:1392

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\tmpEA60.tmp

Filesize
1KB

MD5
d2845cc258e0426e595acc15fe5bde0f

SHA1
96e4a0bbd2f79b25221fb36e8159137db554685b

SHA256
c85f1b660575010bc5287d71e11dcd10ba961eea989e4529bf3e420b149a2752

SHA512
89a8d4db808edbeede719c2053825971a851d7cffcb7c187202e2cd7897785c2b427aec8a2f2e728c112895752cea1a4bd8c591f6aebed7390d8f24572fb2d63

Download Submit
memory/456-64-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/456-88-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/456-77-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/456-72-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/456-69-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/456-67-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/456-65-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1384-87-0x000000006CCD0000-0x000000006D27B000-memory.dmp

Filesize
5.7MB

Download
memory/1384-76-0x000000006CCD0000-0x000000006D27B000-memory.dmp

Filesize
5.7MB

Download
memory/1392-80-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1392-83-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1392-85-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1392-78-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1924-58-0x0000000004F30000-0x0000000004FA2000-memory.dmp

Filesize
456KB

Download
memory/1924-56-0x0000000000270000-0x0000000000286000-memory.dmp

Filesize
88KB

Download
memory/1924-57-0x0000000000290000-0x000000000029A000-memory.dmp

Filesize
40KB

Download
memory/1924-63-0x0000000000FE0000-0x000000000100A000-memory.dmp

Filesize
168KB

Download
memory/1924-54-0x0000000001130000-0x00000000011E8000-memory.dmp

Filesize
736KB

Download
memory/1924-55-0x0000000076201000-0x0000000076203000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads