blustealer | 541dcecae2d6ac17d9af5291b3d05cca35631c72279759b8b44c98d54416454f

General

Target

GFSBHDHDHDHHD.exe
Size

140KB
MD5

35c0717be78278ae5819daea4df7b636
SHA1

77162cdbbb1b8ff5c1cfa8b151f65c3dc3bf0ce0
SHA256

541dcecae2d6ac17d9af5291b3d05cca35631c72279759b8b44c98d54416454f
SHA512

d9826b94d7af1eb792958abb479d55665f3722f298879a104a44a76af0c8531e383f7184d51a1c281b577248800bccd273dc0d50573f39dd78e9fcf03b5dc66c
SSDEEP

3072:M6Iq60Sma/wfKbm3+AHrJuVTBychy4M+3CZG5kKPyA:Uma/wib++0rJuVochyxE

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 4 IoCs

resource	yara_rule
behavioral1/memory/472-72-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/472-73-0x00000000000A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/472-75-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/472-77-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\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
3	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1456 set thread context of 1684	1456	GFSBHDHDHDHHD.exe	28
PID 1684 set thread context of 472	1684	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 behavior: EnumeratesProcesses 2 IoCs

pid	Process
1456	GFSBHDHDHDHHD.exe
1456	GFSBHDHDHDHHD.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1456	GFSBHDHDHDHHD.exe
Token: SeDebugPrivilege	472	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1684	Caspol.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1456 wrote to memory of 1472	1456	GFSBHDHDHDHHD.exe	26
PID 1456 wrote to memory of 1472	1456	GFSBHDHDHDHHD.exe	26
PID 1456 wrote to memory of 1472	1456	GFSBHDHDHDHHD.exe	26
PID 1456 wrote to memory of 1472	1456	GFSBHDHDHDHHD.exe	26
PID 1456 wrote to memory of 1152	1456	GFSBHDHDHDHHD.exe	27
PID 1456 wrote to memory of 1152	1456	GFSBHDHDHDHHD.exe	27
PID 1456 wrote to memory of 1152	1456	GFSBHDHDHDHHD.exe	27
PID 1456 wrote to memory of 1152	1456	GFSBHDHDHDHHD.exe	27
PID 1456 wrote to memory of 1684	1456	GFSBHDHDHDHHD.exe	28
PID 1456 wrote to memory of 1684	1456	GFSBHDHDHDHHD.exe	28
PID 1456 wrote to memory of 1684	1456	GFSBHDHDHDHHD.exe	28
PID 1456 wrote to memory of 1684	1456	GFSBHDHDHDHHD.exe	28
PID 1456 wrote to memory of 1684	1456	GFSBHDHDHDHHD.exe	28
PID 1456 wrote to memory of 1684	1456	GFSBHDHDHDHHD.exe	28
PID 1456 wrote to memory of 1684	1456	GFSBHDHDHDHHD.exe	28
PID 1456 wrote to memory of 1684	1456	GFSBHDHDHDHHD.exe	28
PID 1456 wrote to memory of 1684	1456	GFSBHDHDHDHHD.exe	28
PID 1684 wrote to memory of 472	1684	Caspol.exe	29
PID 1684 wrote to memory of 472	1684	Caspol.exe	29
PID 1684 wrote to memory of 472	1684	Caspol.exe	29
PID 1684 wrote to memory of 472	1684	Caspol.exe	29
PID 1684 wrote to memory of 472	1684	Caspol.exe	29
PID 1684 wrote to memory of 472	1684	Caspol.exe	29
PID 1684 wrote to memory of 472	1684	Caspol.exe	29
PID 1684 wrote to memory of 472	1684	Caspol.exe	29
PID 1684 wrote to memory of 472	1684	Caspol.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\GFSBHDHDHDHHD.exe
"C:\Users\Admin\AppData\Local\Temp\GFSBHDHDHDHHD.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1456
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe"
  2⤵
  PID:1472
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe"
  2⤵
  PID:1152
- 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:1684
- - 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:472

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/472-70-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/472-77-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/472-75-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/472-72-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1456-55-0x0000000000170000-0x000000000017C000-memory.dmp

Filesize
48KB

Download
memory/1456-56-0x0000000000180000-0x0000000000188000-memory.dmp

Filesize
32KB

Download
memory/1456-54-0x0000000000070000-0x0000000000096000-memory.dmp

Filesize
152KB

Download
memory/1684-58-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1684-68-0x0000000075B51000-0x0000000075B53000-memory.dmp

Filesize
8KB

Download
memory/1684-69-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1684-65-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1684-62-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1684-60-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1684-57-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1684-79-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download

Analysis

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