blustealer | 92fbc4eb738918fe5ffa5e4e78f0c37242480906b4711cb900eaef7f8c1b3df5

General

Target

SP SOLICITAR OFERTA 2022-SEPT.xlxs(78KB).exe
Size

161KB
MD5

15c9f1c169e3c865751bfd982558764f
SHA1

2da54d454e1465d475308604fc1fdd1e05f47a86
SHA256

cfcd7de22c049bdefa98959de3072b2bfc12e280193d43e4749a84e48ba665b6
SHA512

319096edbf164999491ee4d533d5e3a6d62a43695752d1265bf20bffef64ea6da64d1ff6cce87711ce9b86046132087c2daba72802b8326e8fca2a6a6bad4d24
SSDEEP

3072:xPJAN1NYJJZxyRkIMZ+K9pnF7Nw03lmNn64YCwPYaTCHGRm02ZJdaHodiVyx9HMc:x41NYjzaMZ+ApnVNVQNn64YFYaT7DodH

Score

10^/10

blustealer stormkitty collection spyware 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 1 IoCs

resource	yara_rule
behavioral2/memory/4484-140-0x0000000001380000-0x000000000139A000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081

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
25	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4608 set thread context of 4880	4608	SP SOLICITAR OFERTA 2022-SEPT.xlxs(78KB).exe	88
PID 4880 set thread context of 4484	4880	cvtres.exe	89

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

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4484	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4880	cvtres.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4608 wrote to memory of 4880	4608	SP SOLICITAR OFERTA 2022-SEPT.xlxs(78KB).exe	88
PID 4608 wrote to memory of 4880	4608	SP SOLICITAR OFERTA 2022-SEPT.xlxs(78KB).exe	88
PID 4608 wrote to memory of 4880	4608	SP SOLICITAR OFERTA 2022-SEPT.xlxs(78KB).exe	88
PID 4608 wrote to memory of 4880	4608	SP SOLICITAR OFERTA 2022-SEPT.xlxs(78KB).exe	88
PID 4608 wrote to memory of 4880	4608	SP SOLICITAR OFERTA 2022-SEPT.xlxs(78KB).exe	88
PID 4608 wrote to memory of 4880	4608	SP SOLICITAR OFERTA 2022-SEPT.xlxs(78KB).exe	88
PID 4608 wrote to memory of 4880	4608	SP SOLICITAR OFERTA 2022-SEPT.xlxs(78KB).exe	88
PID 4608 wrote to memory of 4880	4608	SP SOLICITAR OFERTA 2022-SEPT.xlxs(78KB).exe	88
PID 4880 wrote to memory of 4484	4880	cvtres.exe	89
PID 4880 wrote to memory of 4484	4880	cvtres.exe	89
PID 4880 wrote to memory of 4484	4880	cvtres.exe	89
PID 4880 wrote to memory of 4484	4880	cvtres.exe	89
PID 4880 wrote to memory of 4484	4880	cvtres.exe	89

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\SP SOLICITAR OFERTA 2022-SEPT.xlxs(78KB).exe
"C:\Users\Admin\AppData\Local\Temp\SP SOLICITAR OFERTA 2022-SEPT.xlxs(78KB).exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4608
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4880
- - 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:4484

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/4484-140-0x0000000001380000-0x000000000139A000-memory.dmp

Filesize
104KB

Download
memory/4484-141-0x00000000057E0000-0x0000000005846000-memory.dmp

Filesize
408KB

Download
memory/4484-143-0x0000000006290000-0x000000000632C000-memory.dmp

Filesize
624KB

Download
memory/4608-132-0x0000000000A20000-0x0000000000A4C000-memory.dmp

Filesize
176KB

Download
memory/4880-134-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4880-136-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4880-142-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4880-144-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download

Analysis

Sharing