blustealer | ce2518f0eddcfaa14c9c110d8df87b6aeeebabd851c53954a6702493be867338

General

Target

E-dekont.pdf.exe
Size

782KB
MD5

24a7aabcbce1a0c2b00bfab6630cfb67
SHA1

83d7e07f348bc6e70b2523831ce85cf93ca94403
SHA256

ce2518f0eddcfaa14c9c110d8df87b6aeeebabd851c53954a6702493be867338
SHA512

1956a7bb12cab247612d376d4058f6f8e8fd1d30d9e83e71b1d660ee302693fc20b88fb6f147f7b185626c515fac99a8729041d3af3faccd5494f377ab238798
SSDEEP

12288:40mZJbxpDFZ0z33QKyd9TNEAmcS3CAzpQWoTmQEr9bTAc/LMzYyTrJjSC:40oCwKW9+CSSAF2i9nArzNYC

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5374342837:AAHF-c1HAIvNCdF89VuEdNggsL2YBlpgkSE/sendMessage?chat_id=2133303215

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/684-75-0x0000000000190000-0x00000000001AA000-memory.dmp	family_stormkitty
behavioral1/memory/684-76-0x00000000001A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/684-80-0x0000000000190000-0x00000000001AA000-memory.dmp	family_stormkitty
behavioral1/memory/684-78-0x0000000000190000-0x00000000001AA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\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
4	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 520 set thread context of 1560	520	E-dekont.pdf.exe	28
PID 1560 set thread context of 684	1560	E-dekont.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 use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	684	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1560	E-dekont.pdf.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 520 wrote to memory of 1560	520	E-dekont.pdf.exe	28
PID 520 wrote to memory of 1560	520	E-dekont.pdf.exe	28
PID 520 wrote to memory of 1560	520	E-dekont.pdf.exe	28
PID 520 wrote to memory of 1560	520	E-dekont.pdf.exe	28
PID 520 wrote to memory of 1560	520	E-dekont.pdf.exe	28
PID 520 wrote to memory of 1560	520	E-dekont.pdf.exe	28
PID 520 wrote to memory of 1560	520	E-dekont.pdf.exe	28
PID 520 wrote to memory of 1560	520	E-dekont.pdf.exe	28
PID 520 wrote to memory of 1560	520	E-dekont.pdf.exe	28
PID 1560 wrote to memory of 684	1560	E-dekont.pdf.exe	29
PID 1560 wrote to memory of 684	1560	E-dekont.pdf.exe	29
PID 1560 wrote to memory of 684	1560	E-dekont.pdf.exe	29
PID 1560 wrote to memory of 684	1560	E-dekont.pdf.exe	29
PID 1560 wrote to memory of 684	1560	E-dekont.pdf.exe	29
PID 1560 wrote to memory of 684	1560	E-dekont.pdf.exe	29
PID 1560 wrote to memory of 684	1560	E-dekont.pdf.exe	29
PID 1560 wrote to memory of 684	1560	E-dekont.pdf.exe	29
PID 1560 wrote to memory of 684	1560	E-dekont.pdf.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\E-dekont.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\E-dekont.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:520
- C:\Users\Admin\AppData\Local\Temp\E-dekont.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\E-dekont.pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1560
- - 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:684

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/520-55-0x0000000075441000-0x0000000075443000-memory.dmp

Filesize
8KB

Download
memory/520-56-0x0000000000290000-0x00000000002A8000-memory.dmp

Filesize
96KB

Download
memory/520-57-0x0000000000220000-0x000000000022C000-memory.dmp

Filesize
48KB

Download
memory/520-58-0x0000000007E60000-0x0000000007EF6000-memory.dmp

Filesize
600KB

Download
memory/520-59-0x0000000007F00000-0x0000000007F62000-memory.dmp

Filesize
392KB

Download
memory/520-54-0x0000000000AA0000-0x0000000000B6A000-memory.dmp

Filesize
808KB

Download
memory/684-73-0x0000000000190000-0x00000000001AA000-memory.dmp

Filesize
104KB

Download
memory/684-78-0x0000000000190000-0x00000000001AA000-memory.dmp

Filesize
104KB

Download
memory/684-80-0x0000000000190000-0x00000000001AA000-memory.dmp

Filesize
104KB

Download
memory/684-75-0x0000000000190000-0x00000000001AA000-memory.dmp

Filesize
104KB

Download
memory/1560-63-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1560-71-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1560-68-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1560-65-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1560-61-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1560-60-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1560-82-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download

Analysis

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