blustealer | cc958c7f5b0df9478942f85bc4c4d391e14199149a1c443dae217dd288017683

General

Target

cc958c7f5b0df9478942f85bc4c4d391e14199149a1c443dae217dd288017683.exe
Size

266KB
MD5

47ac5b93c393ffb0f3451675855ebb15
SHA1

90ebc874f7c47f5e36182c552622c4ca6c284c0a
SHA256

cc958c7f5b0df9478942f85bc4c4d391e14199149a1c443dae217dd288017683
SHA512

484beb7b5f9ea29d138c18ccb1e36e0a9a94156177c1bed68da3fd701340a15388fc10b540e1941c7eb3d925b21c601d9c3528872f835c74f3eb321530f6867d

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 1 IoCs

resource	yara_rule
behavioral2/memory/4656-139-0x0000000001300000-0x000000000131A000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\Software\Microsoft\Office\15.0\Outlook\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
34	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2588 set thread context of 3768	2588	cc958c7f5b0df9478942f85bc4c4d391e14199149a1c443dae217dd288017683.exe	85
PID 3768 set thread context of 4656	3768	cvtres.exe	86

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	4656	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3768	cvtres.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2588 wrote to memory of 3768	2588	cc958c7f5b0df9478942f85bc4c4d391e14199149a1c443dae217dd288017683.exe	85
PID 2588 wrote to memory of 3768	2588	cc958c7f5b0df9478942f85bc4c4d391e14199149a1c443dae217dd288017683.exe	85
PID 2588 wrote to memory of 3768	2588	cc958c7f5b0df9478942f85bc4c4d391e14199149a1c443dae217dd288017683.exe	85
PID 2588 wrote to memory of 3768	2588	cc958c7f5b0df9478942f85bc4c4d391e14199149a1c443dae217dd288017683.exe	85
PID 2588 wrote to memory of 3768	2588	cc958c7f5b0df9478942f85bc4c4d391e14199149a1c443dae217dd288017683.exe	85
PID 2588 wrote to memory of 3768	2588	cc958c7f5b0df9478942f85bc4c4d391e14199149a1c443dae217dd288017683.exe	85
PID 2588 wrote to memory of 3768	2588	cc958c7f5b0df9478942f85bc4c4d391e14199149a1c443dae217dd288017683.exe	85
PID 2588 wrote to memory of 3768	2588	cc958c7f5b0df9478942f85bc4c4d391e14199149a1c443dae217dd288017683.exe	85
PID 3768 wrote to memory of 4656	3768	cvtres.exe	86
PID 3768 wrote to memory of 4656	3768	cvtres.exe	86
PID 3768 wrote to memory of 4656	3768	cvtres.exe	86
PID 3768 wrote to memory of 4656	3768	cvtres.exe	86
PID 3768 wrote to memory of 4656	3768	cvtres.exe	86

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\cc958c7f5b0df9478942f85bc4c4d391e14199149a1c443dae217dd288017683.exe
"C:\Users\Admin\AppData\Local\Temp\cc958c7f5b0df9478942f85bc4c4d391e14199149a1c443dae217dd288017683.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2588
- 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:3768
- - 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:4656

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/2588-130-0x00000000000C0000-0x0000000000106000-memory.dmp

Filesize
280KB

Download
memory/3768-132-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3768-134-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3768-137-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3768-142-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4656-139-0x0000000001300000-0x000000000131A000-memory.dmp

Filesize
104KB

Download
memory/4656-140-0x00000000057B0000-0x0000000005816000-memory.dmp

Filesize
408KB

Download
memory/4656-141-0x00000000060E0000-0x000000000617C000-memory.dmp

Filesize
624KB

Download

Analysis

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