blustealer | 980d032454e0f471a820a594683ae833ac86d4c074fbf43cb47798ca774b35f6

General

Target

NHHhHhab.exe
Size

764KB
MD5

072fa2c24d833a4d1370c4830977ee5a
SHA1

74b2abcae6491d617225b5b430bd3309ee212fb4
SHA256

980d032454e0f471a820a594683ae833ac86d4c074fbf43cb47798ca774b35f6
SHA512

9589f213e00648acfac43bc56e5b3b74746dfd688ef052017b9f0d53ffb12c20f4257ebde497bb8bdd03829ea0e8a92879d625076af9a4919284cf16f1256495
SSDEEP

12288:AQHFUlKANJ2yE8qMg+dEOrCG0D7SKHBweeSXXYrzQ70W:AFk+EOrCG0DmgBwerHYo0W

Score

10^/10

blustealer stormkitty collection spyware stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5627356603:AAG-Mx0TbSHRRW6IwndrpX3VLZdhd6C-Zac/sendMessage?chat_id=5472437377

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/4500-140-0x0000000001300000-0x000000000131A000-memory.dmp	family_stormkitty

.NET Reactor proctector 1 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
behavioral2/memory/848-133-0x0000025C00A50000-0x0000025C00B10000-memory.dmp	net_reactor

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\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
23	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 848 set thread context of 3564	848	NHHhHhab.exe	86
PID 3564 set thread context of 4500	3564	Aspnet_compiler.exe	87

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 behavior: EnumeratesProcesses 2 IoCs

pid	Process
848	NHHhHhab.exe
848	NHHhHhab.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	848	NHHhHhab.exe
Token: SeDebugPrivilege	4500	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3564	Aspnet_compiler.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 848 wrote to memory of 2392	848	NHHhHhab.exe	85
PID 848 wrote to memory of 2392	848	NHHhHhab.exe	85
PID 848 wrote to memory of 2392	848	NHHhHhab.exe	85
PID 848 wrote to memory of 3564	848	NHHhHhab.exe	86
PID 848 wrote to memory of 3564	848	NHHhHhab.exe	86
PID 848 wrote to memory of 3564	848	NHHhHhab.exe	86
PID 848 wrote to memory of 3564	848	NHHhHhab.exe	86
PID 848 wrote to memory of 3564	848	NHHhHhab.exe	86
PID 848 wrote to memory of 3564	848	NHHhHhab.exe	86
PID 848 wrote to memory of 3564	848	NHHhHhab.exe	86
PID 848 wrote to memory of 3564	848	NHHhHhab.exe	86
PID 3564 wrote to memory of 4500	3564	Aspnet_compiler.exe	87
PID 3564 wrote to memory of 4500	3564	Aspnet_compiler.exe	87
PID 3564 wrote to memory of 4500	3564	Aspnet_compiler.exe	87
PID 3564 wrote to memory of 4500	3564	Aspnet_compiler.exe	87
PID 3564 wrote to memory of 4500	3564	Aspnet_compiler.exe	87

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\NHHhHhab.exe
"C:\Users\Admin\AppData\Local\Temp\NHHhHhab.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:848
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe"
  2⤵
  PID:2392
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3564
- - 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:4500

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

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Downloads

memory/848-133-0x0000025C00A50000-0x0000025C00B10000-memory.dmp

Filesize
768KB

Download
memory/3564-134-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3564-137-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3564-145-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4500-140-0x0000000001300000-0x000000000131A000-memory.dmp

Filesize
104KB

Download
memory/4500-141-0x0000000005870000-0x00000000058D6000-memory.dmp

Filesize
408KB

Download
memory/4500-142-0x0000000006350000-0x00000000063EC000-memory.dmp

Filesize
624KB

Download
memory/4500-144-0x0000000005900000-0x0000000005910000-memory.dmp

Filesize
64KB

Download

Analysis

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