blustealer | ce2518f0eddcfaa14c9c110d8df87b6aeeebabd851c53954a6702493be867338

Analysis

max time kernel
151s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
25-11-2022 07:22

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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 stealer

Malware Config

Extracted

Family

blustealer

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 1 IoCs

resource	yara_rule
behavioral2/memory/1836-146-0x0000000000580000-0x000000000059A000-memory.dmp	family_stormkitty

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
62	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2484 set thread context of 3772	2484	E-dekont.pdf.exe	87
PID 3772 set thread context of 1836	3772	E-dekont.pdf.exe	88

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 2 IoCs

pid	Process
2484	E-dekont.pdf.exe
2484	E-dekont.pdf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2484	E-dekont.pdf.exe
Token: SeDebugPrivilege	1836	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3772	E-dekont.pdf.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2484 wrote to memory of 4916	2484	E-dekont.pdf.exe	86
PID 2484 wrote to memory of 4916	2484	E-dekont.pdf.exe	86
PID 2484 wrote to memory of 4916	2484	E-dekont.pdf.exe	86
PID 2484 wrote to memory of 3772	2484	E-dekont.pdf.exe	87
PID 2484 wrote to memory of 3772	2484	E-dekont.pdf.exe	87
PID 2484 wrote to memory of 3772	2484	E-dekont.pdf.exe	87
PID 2484 wrote to memory of 3772	2484	E-dekont.pdf.exe	87
PID 2484 wrote to memory of 3772	2484	E-dekont.pdf.exe	87
PID 2484 wrote to memory of 3772	2484	E-dekont.pdf.exe	87
PID 2484 wrote to memory of 3772	2484	E-dekont.pdf.exe	87
PID 2484 wrote to memory of 3772	2484	E-dekont.pdf.exe	87
PID 3772 wrote to memory of 1836	3772	E-dekont.pdf.exe	88
PID 3772 wrote to memory of 1836	3772	E-dekont.pdf.exe	88
PID 3772 wrote to memory of 1836	3772	E-dekont.pdf.exe	88
PID 3772 wrote to memory of 1836	3772	E-dekont.pdf.exe	88
PID 3772 wrote to memory of 1836	3772	E-dekont.pdf.exe	88

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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2484
- C:\Users\Admin\AppData\Local\Temp\E-dekont.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\E-dekont.pdf.exe"
  2⤵
  PID:4916
- 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:3772
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    3⤵
    - Checks processor information in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:1836

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1836-147-0x0000000004A60000-0x0000000004AC6000-memory.dmp

Filesize
408KB

Download
memory/1836-146-0x0000000000580000-0x000000000059A000-memory.dmp

Filesize
104KB

Download
memory/2484-133-0x0000000005EF0000-0x0000000006494000-memory.dmp

Filesize
5.6MB

Download
memory/2484-134-0x0000000005860000-0x00000000058F2000-memory.dmp

Filesize
584KB

Download
memory/2484-135-0x0000000005910000-0x000000000591A000-memory.dmp

Filesize
40KB

Download
memory/2484-136-0x0000000009320000-0x00000000093BC000-memory.dmp

Filesize
624KB

Download
memory/2484-132-0x0000000000F60000-0x000000000102A000-memory.dmp

Filesize
808KB

Download
memory/3772-144-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/3772-141-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/3772-139-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/3772-148-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download