blustealer | 94f51a2fef39412213639a0070d29e97a2f744dfb9bfdb8f4dea5f46052e8dda

General

Target

PEDIDO020523.exe
Size

691KB
MD5

5c435b912ff7ec3f5b147ff71a9ccf6f
SHA1

da5f7424d4deef782190852f654b94dc9295afc1
SHA256

94f51a2fef39412213639a0070d29e97a2f744dfb9bfdb8f4dea5f46052e8dda
SHA512

f57fffc641ebcd51aed4cd9a0e28c3639e4d54b7fcb2f1dbbec7fbedfb58eb6b07c96cd7619c0533d620790d7d3d34c01099a9106ed9c91033f0634ca3e4ca94
SSDEEP

12288:OrgmRp27goQV8bpxYHsntfwNM2wzO5j1tAilPTz8vf2ZeozmpgUMnGWIUP9c:OrgmR18b4MNwNMFzuTdJTufIW7WdP9

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot6055609563:AAEfBlANuysNS3Feagncr0tioVRR2TOueCY/sendMessage?chat_id=6188873948

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/548-70-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/548-72-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/548-74-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/548-75-0x0000000002630000-0x0000000002670000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\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
3	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1596 set thread context of 752	1596	PEDIDO020523.exe	28
PID 752 set thread context of 548	752	caspol.exe	29

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	548	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
752	caspol.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1596 wrote to memory of 752	1596	PEDIDO020523.exe	28
PID 1596 wrote to memory of 752	1596	PEDIDO020523.exe	28
PID 1596 wrote to memory of 752	1596	PEDIDO020523.exe	28
PID 1596 wrote to memory of 752	1596	PEDIDO020523.exe	28
PID 1596 wrote to memory of 752	1596	PEDIDO020523.exe	28
PID 1596 wrote to memory of 752	1596	PEDIDO020523.exe	28
PID 1596 wrote to memory of 752	1596	PEDIDO020523.exe	28
PID 1596 wrote to memory of 752	1596	PEDIDO020523.exe	28
PID 1596 wrote to memory of 752	1596	PEDIDO020523.exe	28
PID 752 wrote to memory of 548	752	caspol.exe	29
PID 752 wrote to memory of 548	752	caspol.exe	29
PID 752 wrote to memory of 548	752	caspol.exe	29
PID 752 wrote to memory of 548	752	caspol.exe	29
PID 752 wrote to memory of 548	752	caspol.exe	29
PID 752 wrote to memory of 548	752	caspol.exe	29
PID 752 wrote to memory of 548	752	caspol.exe	29
PID 752 wrote to memory of 548	752	caspol.exe	29
PID 752 wrote to memory of 548	752	caspol.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\PEDIDO020523.exe
"C:\Users\Admin\AppData\Local\Temp\PEDIDO020523.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1596
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:752
- - 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:548

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/548-68-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/548-77-0x0000000002630000-0x0000000002670000-memory.dmp

Filesize
256KB

Download
memory/548-75-0x0000000002630000-0x0000000002670000-memory.dmp

Filesize
256KB

Download
memory/548-74-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/548-72-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/548-70-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/548-69-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/752-59-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/752-64-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/752-67-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/752-62-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/752-61-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/752-58-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/752-57-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/752-76-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1596-54-0x0000000000C50000-0x0000000000CFE000-memory.dmp

Filesize
696KB

Download
memory/1596-56-0x0000000000740000-0x0000000000750000-memory.dmp

Filesize
64KB

Download
memory/1596-55-0x000000001AE20000-0x000000001AEA0000-memory.dmp

Filesize
512KB

Download

Analysis

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