blustealer | 19b0d58c3611ccc99f681997248a835ac4a49572a50278f4f7c732237183db6a

General

Target

41570002689_20221001_05352297_HesapOzeti.exe
Size

1.1MB
MD5

6a58925feb3fe5477f8c44595d2c36cd
SHA1

1b9565b62bee0d29a4f21eb617a88e9682e09862
SHA256

19b0d58c3611ccc99f681997248a835ac4a49572a50278f4f7c732237183db6a
SHA512

fd83cb7cc2e9234f46f7b355a9ff66d26354adf1ba520d51ea3c95cf88ad6e618927d5c04ffa4248d887ad534d24b56a1485eeb6fbb40f603737012ff5898cde
SSDEEP

12288:o/r9+ljmhNLbDYmcIZQWDA9aHZVIAodG21+sq+AJkZnfYHVKyGr3CQK4HTN2i8E6:EsljMLbDYquFY0o+A2ZwhGraJ

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 1 IoCs

resource	yara_rule
behavioral2/memory/4588-153-0x0000000001180000-0x000000000119A000-memory.dmp	family_stormkitty

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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	41570002689_20221001_05352297_HesapOzeti.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\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
38	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1356 set thread context of 1868	1356	41570002689_20221001_05352297_HesapOzeti.exe	95
PID 1868 set thread context of 4588	1868	41570002689_20221001_05352297_HesapOzeti.exe	96

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
5048	schtasks.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
1356	41570002689_20221001_05352297_HesapOzeti.exe
1356	41570002689_20221001_05352297_HesapOzeti.exe
1356	41570002689_20221001_05352297_HesapOzeti.exe
1356	41570002689_20221001_05352297_HesapOzeti.exe
1356	41570002689_20221001_05352297_HesapOzeti.exe
1356	41570002689_20221001_05352297_HesapOzeti.exe
1356	41570002689_20221001_05352297_HesapOzeti.exe
1356	41570002689_20221001_05352297_HesapOzeti.exe
1356	41570002689_20221001_05352297_HesapOzeti.exe
1356	41570002689_20221001_05352297_HesapOzeti.exe
1356	41570002689_20221001_05352297_HesapOzeti.exe
1356	41570002689_20221001_05352297_HesapOzeti.exe
1356	41570002689_20221001_05352297_HesapOzeti.exe
1356	41570002689_20221001_05352297_HesapOzeti.exe
3964	powershell.exe
3964	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1868	41570002689_20221001_05352297_HesapOzeti.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1356	41570002689_20221001_05352297_HesapOzeti.exe
Token: SeDebugPrivilege	3964	powershell.exe
Token: SeDebugPrivilege	4588	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1868	41570002689_20221001_05352297_HesapOzeti.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1356 wrote to memory of 3964	1356	41570002689_20221001_05352297_HesapOzeti.exe	91
PID 1356 wrote to memory of 3964	1356	41570002689_20221001_05352297_HesapOzeti.exe	91
PID 1356 wrote to memory of 3964	1356	41570002689_20221001_05352297_HesapOzeti.exe	91
PID 1356 wrote to memory of 5048	1356	41570002689_20221001_05352297_HesapOzeti.exe	93
PID 1356 wrote to memory of 5048	1356	41570002689_20221001_05352297_HesapOzeti.exe	93
PID 1356 wrote to memory of 5048	1356	41570002689_20221001_05352297_HesapOzeti.exe	93
PID 1356 wrote to memory of 1868	1356	41570002689_20221001_05352297_HesapOzeti.exe	95
PID 1356 wrote to memory of 1868	1356	41570002689_20221001_05352297_HesapOzeti.exe	95
PID 1356 wrote to memory of 1868	1356	41570002689_20221001_05352297_HesapOzeti.exe	95
PID 1356 wrote to memory of 1868	1356	41570002689_20221001_05352297_HesapOzeti.exe	95
PID 1356 wrote to memory of 1868	1356	41570002689_20221001_05352297_HesapOzeti.exe	95
PID 1356 wrote to memory of 1868	1356	41570002689_20221001_05352297_HesapOzeti.exe	95
PID 1356 wrote to memory of 1868	1356	41570002689_20221001_05352297_HesapOzeti.exe	95
PID 1356 wrote to memory of 1868	1356	41570002689_20221001_05352297_HesapOzeti.exe	95
PID 1868 wrote to memory of 4588	1868	41570002689_20221001_05352297_HesapOzeti.exe	96
PID 1868 wrote to memory of 4588	1868	41570002689_20221001_05352297_HesapOzeti.exe	96
PID 1868 wrote to memory of 4588	1868	41570002689_20221001_05352297_HesapOzeti.exe	96
PID 1868 wrote to memory of 4588	1868	41570002689_20221001_05352297_HesapOzeti.exe	96
PID 1868 wrote to memory of 4588	1868	41570002689_20221001_05352297_HesapOzeti.exe	96

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\ 41570002689_20221001_05352297_HesapOzeti.exe
"C:\Users\Admin\AppData\Local\Temp\ 41570002689_20221001_05352297_HesapOzeti.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1356
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ZFkIYZK.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3964
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZFkIYZK" /XML "C:\Users\Admin\AppData\Local\Temp\tmp83D1.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:5048
- C:\Users\Admin\AppData\Local\Temp\ 41570002689_20221001_05352297_HesapOzeti.exe
  "C:\Users\Admin\AppData\Local\Temp\ 41570002689_20221001_05352297_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:4588

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

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp83D1.tmp

Filesize
1KB

MD5
f579e7202a8774e0ebba46ae07597241

SHA1
715bb320bf82ef3aebc1e77f7c47369504e6f391

SHA256
c5f245f3e039e8fa683226d1d1037c97d05c0b500441a1eeefb59b331d99e980

SHA512
656678cce49d28231df81914835244c5910e076f60c5342bf79b84fb0205de6e2712a70b2454b78f988e78fa085941cff2ed6cbe689cd8589ff1c0c5f634ca00

Download Submit
memory/1356-133-0x00000000076D0000-0x0000000007C74000-memory.dmp

Filesize
5.6MB

Download
memory/1356-134-0x00000000071C0000-0x0000000007252000-memory.dmp

Filesize
584KB

Download
memory/1356-135-0x0000000007170000-0x000000000717A000-memory.dmp

Filesize
40KB

Download
memory/1356-136-0x000000000A490000-0x000000000A52C000-memory.dmp

Filesize
624KB

Download
memory/1356-137-0x00000000008E0000-0x0000000000946000-memory.dmp

Filesize
408KB

Download
memory/1356-132-0x00000000001F0000-0x0000000000308000-memory.dmp

Filesize
1.1MB

Download
memory/1868-144-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1868-155-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1868-149-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1868-146-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3964-156-0x0000000006B50000-0x0000000006B82000-memory.dmp

Filesize
200KB

Download
memory/3964-160-0x0000000007890000-0x00000000078AA000-memory.dmp

Filesize
104KB

Download
memory/3964-140-0x0000000002C60000-0x0000000002C96000-memory.dmp

Filesize
216KB

Download
memory/3964-150-0x00000000054E0000-0x0000000005502000-memory.dmp

Filesize
136KB

Download
memory/3964-151-0x0000000005580000-0x00000000055E6000-memory.dmp

Filesize
408KB

Download
memory/3964-165-0x0000000007BB0000-0x0000000007BB8000-memory.dmp

Filesize
32KB

Download
memory/3964-164-0x0000000007BD0000-0x0000000007BEA000-memory.dmp

Filesize
104KB

Download
memory/3964-154-0x0000000006580000-0x000000000659E000-memory.dmp

Filesize
120KB

Download
memory/3964-163-0x0000000007AC0000-0x0000000007ACE000-memory.dmp

Filesize
56KB

Download
memory/3964-157-0x00000000707C0000-0x000000007080C000-memory.dmp

Filesize
304KB

Download
memory/3964-158-0x0000000006B30000-0x0000000006B4E000-memory.dmp

Filesize
120KB

Download
memory/3964-159-0x0000000007EF0000-0x000000000856A000-memory.dmp

Filesize
6.5MB

Download
memory/3964-142-0x0000000005740000-0x0000000005D68000-memory.dmp

Filesize
6.2MB

Download
memory/3964-161-0x0000000007910000-0x000000000791A000-memory.dmp

Filesize
40KB

Download
memory/3964-162-0x0000000007B00000-0x0000000007B96000-memory.dmp

Filesize
600KB

Download
memory/4588-153-0x0000000001180000-0x000000000119A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads