blustealer | 67b1c9f9637d8c16e2966babd6b7a06c2396cbc918b31c0649adf61b7a2a7778

General

Target

doc 27008875424678 001.pdf.exe
Size

612KB
MD5

e439e9fd2d06802bc8aba7114efeb276
SHA1

a158391f5f8bdd683852dc95c1bc144852f38a02
SHA256

67b1c9f9637d8c16e2966babd6b7a06c2396cbc918b31c0649adf61b7a2a7778
SHA512

4aef174be589396ac8b2fbc6eb02b13378b62a5d75659a67c14af83f6a00248450a9e641cd52cadc9e83394db10bc44673de387380a46618c9e61e813bfbfef8

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 4 IoCs

resource	yara_rule
behavioral1/memory/1380-75-0x00000000001A0000-0x00000000001BA000-memory.dmp	family_stormkitty
behavioral1/memory/1380-76-0x00000000001B4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/1380-78-0x00000000001A0000-0x00000000001BA000-memory.dmp	family_stormkitty
behavioral1/memory/1380-80-0x00000000001A0000-0x00000000001BA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\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
6	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1988 set thread context of 1932	1988	doc 27008875424678 001.pdf.exe	28
PID 1932 set thread context of 1380	1932	doc 27008875424678 001.pdf.exe	29

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

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 5 IoCs

pid	Process
1988	doc 27008875424678 001.pdf.exe
1988	doc 27008875424678 001.pdf.exe
1988	doc 27008875424678 001.pdf.exe
1988	doc 27008875424678 001.pdf.exe
1988	doc 27008875424678 001.pdf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1988	doc 27008875424678 001.pdf.exe
Token: SeDebugPrivilege	1380	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1932	doc 27008875424678 001.pdf.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1988 wrote to memory of 1932	1988	doc 27008875424678 001.pdf.exe	28
PID 1988 wrote to memory of 1932	1988	doc 27008875424678 001.pdf.exe	28
PID 1988 wrote to memory of 1932	1988	doc 27008875424678 001.pdf.exe	28
PID 1988 wrote to memory of 1932	1988	doc 27008875424678 001.pdf.exe	28
PID 1988 wrote to memory of 1932	1988	doc 27008875424678 001.pdf.exe	28
PID 1988 wrote to memory of 1932	1988	doc 27008875424678 001.pdf.exe	28
PID 1988 wrote to memory of 1932	1988	doc 27008875424678 001.pdf.exe	28
PID 1988 wrote to memory of 1932	1988	doc 27008875424678 001.pdf.exe	28
PID 1988 wrote to memory of 1932	1988	doc 27008875424678 001.pdf.exe	28
PID 1932 wrote to memory of 1380	1932	doc 27008875424678 001.pdf.exe	29
PID 1932 wrote to memory of 1380	1932	doc 27008875424678 001.pdf.exe	29
PID 1932 wrote to memory of 1380	1932	doc 27008875424678 001.pdf.exe	29
PID 1932 wrote to memory of 1380	1932	doc 27008875424678 001.pdf.exe	29
PID 1932 wrote to memory of 1380	1932	doc 27008875424678 001.pdf.exe	29
PID 1932 wrote to memory of 1380	1932	doc 27008875424678 001.pdf.exe	29
PID 1932 wrote to memory of 1380	1932	doc 27008875424678 001.pdf.exe	29
PID 1932 wrote to memory of 1380	1932	doc 27008875424678 001.pdf.exe	29
PID 1932 wrote to memory of 1380	1932	doc 27008875424678 001.pdf.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\doc 27008875424678 001.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\doc 27008875424678 001.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1988
- C:\Users\Admin\AppData\Local\Temp\doc 27008875424678 001.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\doc 27008875424678 001.pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1932
- - 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:1380

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1380-75-0x00000000001A0000-0x00000000001BA000-memory.dmp

Filesize
104KB

Download
memory/1380-80-0x00000000001A0000-0x00000000001BA000-memory.dmp

Filesize
104KB

Download
memory/1380-78-0x00000000001A0000-0x00000000001BA000-memory.dmp

Filesize
104KB

Download
memory/1380-73-0x00000000001A0000-0x00000000001BA000-memory.dmp

Filesize
104KB

Download
memory/1932-72-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1932-87-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1932-61-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1932-63-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1932-65-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1932-68-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1932-60-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1988-54-0x00000000002D0000-0x000000000036E000-memory.dmp

Filesize
632KB

Download
memory/1988-58-0x000000000A2F0000-0x000000000A36A000-memory.dmp

Filesize
488KB

Download
memory/1988-57-0x00000000007E0000-0x00000000007EA000-memory.dmp

Filesize
40KB

Download
memory/1988-56-0x00000000007C0000-0x00000000007D6000-memory.dmp

Filesize
88KB

Download
memory/1988-55-0x0000000075731000-0x0000000075733000-memory.dmp

Filesize
8KB

Download
memory/1988-59-0x00000000022B0000-0x00000000022E0000-memory.dmp

Filesize
192KB

Download

Analysis

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