blustealer | cfb4debef9e879e4063d5e1575c0d1b45a523bc8df82339f0a199bc214e0a446

General

Target

41570002689_20220922_05393480_HesapOzeti.exe
Size

868KB
MD5

da1eb258ebce6a56bb005da137e7ad39
SHA1

e7a80eac4bcc6fbc8e7781d0f62d6807edbf3baf
SHA256

cd38bbc0668699fe1761de97d8dd736321a219e5cf99767bb1f0dd81a2c03bcc
SHA512

93b6eda6f657df02208bda1e5980b1de35afea6e5f11a16fb0b621868b6bcd8d6bda04625c6f352f6935d85962458c3c2cbb2fa10f25be977eafcb6f2ab1d814
SSDEEP

12288:klDZQS57JF2fvAcxD9E0QaBNj6iumhTh9GwKuCpcVz+RfwWbjvNYugmv9uE6kfYy:aZt7v2fvdbhBNjthT6WJVQLjz

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5412597166:AAGUaWxuTxxhNb-NRhiURcTMzuW9nhGoEs/sendMessage?chat_id=932962718

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/1416-78-0x00000000000D0000-0x00000000000EA000-memory.dmp	family_stormkitty
behavioral1/memory/1416-79-0x00000000000E4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/1416-81-0x00000000000D0000-0x00000000000EA000-memory.dmp	family_stormkitty
behavioral1/memory/1416-83-0x00000000000D0000-0x00000000000EA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\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 1284 set thread context of 1868	1284	41570002689_20220922_05393480_HesapOzeti.exe	31
PID 1868 set thread context of 1416	1868	41570002689_20220922_05393480_HesapOzeti.exe	32

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

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
660	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1532	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1868	41570002689_20220922_05393480_HesapOzeti.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1532	powershell.exe
Token: SeDebugPrivilege	1416	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1868	41570002689_20220922_05393480_HesapOzeti.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1284 wrote to memory of 1532	1284	41570002689_20220922_05393480_HesapOzeti.exe	27
PID 1284 wrote to memory of 1532	1284	41570002689_20220922_05393480_HesapOzeti.exe	27
PID 1284 wrote to memory of 1532	1284	41570002689_20220922_05393480_HesapOzeti.exe	27
PID 1284 wrote to memory of 1532	1284	41570002689_20220922_05393480_HesapOzeti.exe	27
PID 1284 wrote to memory of 660	1284	41570002689_20220922_05393480_HesapOzeti.exe	29
PID 1284 wrote to memory of 660	1284	41570002689_20220922_05393480_HesapOzeti.exe	29
PID 1284 wrote to memory of 660	1284	41570002689_20220922_05393480_HesapOzeti.exe	29
PID 1284 wrote to memory of 660	1284	41570002689_20220922_05393480_HesapOzeti.exe	29
PID 1284 wrote to memory of 1868	1284	41570002689_20220922_05393480_HesapOzeti.exe	31
PID 1284 wrote to memory of 1868	1284	41570002689_20220922_05393480_HesapOzeti.exe	31
PID 1284 wrote to memory of 1868	1284	41570002689_20220922_05393480_HesapOzeti.exe	31
PID 1284 wrote to memory of 1868	1284	41570002689_20220922_05393480_HesapOzeti.exe	31
PID 1284 wrote to memory of 1868	1284	41570002689_20220922_05393480_HesapOzeti.exe	31
PID 1284 wrote to memory of 1868	1284	41570002689_20220922_05393480_HesapOzeti.exe	31
PID 1284 wrote to memory of 1868	1284	41570002689_20220922_05393480_HesapOzeti.exe	31
PID 1284 wrote to memory of 1868	1284	41570002689_20220922_05393480_HesapOzeti.exe	31
PID 1284 wrote to memory of 1868	1284	41570002689_20220922_05393480_HesapOzeti.exe	31
PID 1868 wrote to memory of 1416	1868	41570002689_20220922_05393480_HesapOzeti.exe	32
PID 1868 wrote to memory of 1416	1868	41570002689_20220922_05393480_HesapOzeti.exe	32
PID 1868 wrote to memory of 1416	1868	41570002689_20220922_05393480_HesapOzeti.exe	32
PID 1868 wrote to memory of 1416	1868	41570002689_20220922_05393480_HesapOzeti.exe	32
PID 1868 wrote to memory of 1416	1868	41570002689_20220922_05393480_HesapOzeti.exe	32
PID 1868 wrote to memory of 1416	1868	41570002689_20220922_05393480_HesapOzeti.exe	32
PID 1868 wrote to memory of 1416	1868	41570002689_20220922_05393480_HesapOzeti.exe	32
PID 1868 wrote to memory of 1416	1868	41570002689_20220922_05393480_HesapOzeti.exe	32
PID 1868 wrote to memory of 1416	1868	41570002689_20220922_05393480_HesapOzeti.exe	32

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\41570002689_20220922_05393480_HesapOzeti.exe
"C:\Users\Admin\AppData\Local\Temp\41570002689_20220922_05393480_HesapOzeti.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1284
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\kXeGkF.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1532
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kXeGkF" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1DAF.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:660
- C:\Users\Admin\AppData\Local\Temp\41570002689_20220922_05393480_HesapOzeti.exe
  "C:\Users\Admin\AppData\Local\Temp\41570002689_20220922_05393480_HesapOzeti.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1868
- - 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:1416

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp1DAF.tmp

Filesize
1KB

MD5
ad029b273eab1d00e77d3b9d968b5069

SHA1
e5e7c8d4a3152cadc2ca45fc85f986ee1817e2aa

SHA256
29bcf44239cb25796969aba39edf352678adef8841a167c2f2c1ae820a7ec5c5

SHA512
f275c9d07c1101eed4259f10c187b4b82b35ce0e8b93299399014b1454c31d548d6ee19e1b404041f67391bbff5add9cc1a42a5552da68a9727c6aa02d19f561

Download Submit
memory/1284-57-0x0000000000280000-0x000000000028C000-memory.dmp

Filesize
48KB

Download
memory/1284-58-0x0000000005830000-0x00000000058B2000-memory.dmp

Filesize
520KB

Download
memory/1284-54-0x00000000009D0000-0x0000000000AAE000-memory.dmp

Filesize
888KB

Download
memory/1284-56-0x0000000000270000-0x0000000000284000-memory.dmp

Filesize
80KB

Download
memory/1284-55-0x00000000762E1000-0x00000000762E3000-memory.dmp

Filesize
8KB

Download
memory/1284-63-0x0000000004330000-0x000000000435C000-memory.dmp

Filesize
176KB

Download
memory/1416-76-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/1416-83-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/1416-81-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/1416-78-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/1532-85-0x0000000074B00000-0x00000000750AB000-memory.dmp

Filesize
5.7MB

Download
memory/1868-72-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1868-69-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1868-67-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1868-64-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1868-65-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1868-86-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1868-87-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads