blustealer | ffbfee81490d1ff3b7a33aeaac56ef01dcb0b533c13b0d7bb43be3c5e0155212

General

Target

COTIZAR_.exe
Size

19KB
MD5

496c17c3ffba9e26c620d7bf6f14ecbf
SHA1

c16449a9b28e207148cc5d6a4a1c28cafb8273ee
SHA256

54aea79392cacfa0125aec072799e235bb3d18f6c45aeba807099fd0b6be873f
SHA512

2840e98115db24f21e04e7e020317bf5daa7fbe0836f2752ff41fdfdd9d7c55d41c869874fa0d2fe5de4b734cc173498d80a9dab3b99a69455874811a093c55f
SSDEEP

384:iyPIfwSaB6m71+Tes8ZpHzGovUJAYkr5kYZFP:iygfwTcesiRPPrk+FP

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 1 IoCs

resource	yara_rule
behavioral2/memory/2480-146-0x0000000000C00000-0x0000000000C1A000-memory.dmp	family_stormkitty

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
2636	HGTRFFDDFNOP.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	COTIZAR_.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\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
12	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2636 set thread context of 1072	2636	HGTRFFDDFNOP.exe	87
PID 1072 set thread context of 2480	1072	Regsvcs.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
2636	HGTRFFDDFNOP.exe
2636	HGTRFFDDFNOP.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1388	COTIZAR_.exe
Token: SeDebugPrivilege	2636	HGTRFFDDFNOP.exe
Token: SeDebugPrivilege	2480	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1072	Regsvcs.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1388 wrote to memory of 2636	1388	COTIZAR_.exe	84
PID 1388 wrote to memory of 2636	1388	COTIZAR_.exe	84
PID 1388 wrote to memory of 2636	1388	COTIZAR_.exe	84
PID 2636 wrote to memory of 1292	2636	HGTRFFDDFNOP.exe	86
PID 2636 wrote to memory of 1292	2636	HGTRFFDDFNOP.exe	86
PID 2636 wrote to memory of 1292	2636	HGTRFFDDFNOP.exe	86
PID 2636 wrote to memory of 1072	2636	HGTRFFDDFNOP.exe	87
PID 2636 wrote to memory of 1072	2636	HGTRFFDDFNOP.exe	87
PID 2636 wrote to memory of 1072	2636	HGTRFFDDFNOP.exe	87
PID 2636 wrote to memory of 1072	2636	HGTRFFDDFNOP.exe	87
PID 2636 wrote to memory of 1072	2636	HGTRFFDDFNOP.exe	87
PID 2636 wrote to memory of 1072	2636	HGTRFFDDFNOP.exe	87
PID 2636 wrote to memory of 1072	2636	HGTRFFDDFNOP.exe	87
PID 2636 wrote to memory of 1072	2636	HGTRFFDDFNOP.exe	87
PID 1072 wrote to memory of 2480	1072	Regsvcs.exe	88
PID 1072 wrote to memory of 2480	1072	Regsvcs.exe	88
PID 1072 wrote to memory of 2480	1072	Regsvcs.exe	88
PID 1072 wrote to memory of 2480	1072	Regsvcs.exe	88
PID 1072 wrote to memory of 2480	1072	Regsvcs.exe	88

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\COTIZAR_.exe
"C:\Users\Admin\AppData\Local\Temp\COTIZAR_.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1388
- C:\ProgramData\HGTRFFDDFNOP.exe
  "C:\ProgramData\HGTRFFDDFNOP.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2636
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regsvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regsvcs.exe"
    3⤵
    PID:1292
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regsvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regsvcs.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1072
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      4⤵
      Accesses Microsoft Outlook profiles
      Checks processor information in registry
      Suspicious use of AdjustPrivilegeToken
      outlook_office_path
      outlook_win_path
      PID:2480

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\HGTRFFDDFNOP.exe

Filesize
139KB

MD5
6011926471a8578b303f3a3a9706b388

SHA1
3ac4b05207201b7c244dc5f4698f4836cdfa0e17

SHA256
c56f98685ca1e175f3ba33af2bdfa28d9759b68f0c14cecfd86bae6ff4272c48

SHA512
ce8b05879401d7fdd53969096460fe14b00d0cf09ec8fff3ccbb195c3007974cf5db584c5b20a2fdfe7825d8f939cd8546f05151e01d00bd39b090b997622b42

Download Submit
C:\ProgramData\HGTRFFDDFNOP.exe

Filesize
139KB

MD5
6011926471a8578b303f3a3a9706b388

SHA1
3ac4b05207201b7c244dc5f4698f4836cdfa0e17

SHA256
c56f98685ca1e175f3ba33af2bdfa28d9759b68f0c14cecfd86bae6ff4272c48

SHA512
ce8b05879401d7fdd53969096460fe14b00d0cf09ec8fff3ccbb195c3007974cf5db584c5b20a2fdfe7825d8f939cd8546f05151e01d00bd39b090b997622b42

Download Submit
memory/1072-139-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1072-141-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1072-144-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1072-149-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1388-132-0x0000000000BB0000-0x0000000000BB8000-memory.dmp

Filesize
32KB

Download
memory/2480-146-0x0000000000C00000-0x0000000000C1A000-memory.dmp

Filesize
104KB

Download
memory/2480-147-0x0000000005100000-0x0000000005166000-memory.dmp

Filesize
408KB

Download
memory/2480-148-0x0000000005A10000-0x0000000005AAC000-memory.dmp

Filesize
624KB

Download
memory/2636-136-0x0000000000760000-0x0000000000788000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads