blustealer | 475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220

Analysis

max time kernel
145s
max time network
79s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
10/10/2022, 10:57

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General

Target
475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe
Size 777KB
Sample221010-m188hsbed7
SHA256 475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220
MD5 d12022ca18d335ee92a96b409d9d55cf
SHA1 4c6e97447466c3615b8b564d928ae95461717947
SHA512 1334717e0dba0246a9f1ac5f645d67ddcfa1a259e934dae54fb4fabc7fd72638dacabb2d5d3c6cd0b91c8a3270a3a3eb35fed34c15e5c608fd70eee69e358f38
SSDEEP 6144:pfzfih0m+3no6/PNLf2FNoDCSAbWnkkdylvez5LPh5O3a7M8nY4S3aIAATf6GfcE:pfwnJEkXUVPh8K7s3d3TmCtYY7LBZw
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

https://api.telegram.org/bot5732817033:AAFBYIIZmJ7NuvVwD7WRcbV9qwcOqT7RpwM/sendMessage?chat_id=1638137774

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/1544-78-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1544-79-0x00000000000A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/1544-81-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1544-83-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\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 784 set thread context of 1204	784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	30
PID 1204 set thread context of 1544	1204	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	31

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
1168	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe
784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe
784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe
784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe
784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe
784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe
936	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1204	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe
Token: SeDebugPrivilege	936	powershell.exe
Token: SeDebugPrivilege	1544	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1204	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 784 wrote to memory of 936	784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	26
PID 784 wrote to memory of 936	784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	26
PID 784 wrote to memory of 936	784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	26
PID 784 wrote to memory of 936	784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	26
PID 784 wrote to memory of 1168	784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	28
PID 784 wrote to memory of 1168	784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	28
PID 784 wrote to memory of 1168	784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	28
PID 784 wrote to memory of 1168	784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	28
PID 784 wrote to memory of 1204	784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	30
PID 784 wrote to memory of 1204	784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	30
PID 784 wrote to memory of 1204	784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	30
PID 784 wrote to memory of 1204	784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	30
PID 784 wrote to memory of 1204	784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	30
PID 784 wrote to memory of 1204	784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	30
PID 784 wrote to memory of 1204	784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	30
PID 784 wrote to memory of 1204	784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	30
PID 784 wrote to memory of 1204	784	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	30
PID 1204 wrote to memory of 1544	1204	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	31
PID 1204 wrote to memory of 1544	1204	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	31
PID 1204 wrote to memory of 1544	1204	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	31
PID 1204 wrote to memory of 1544	1204	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	31
PID 1204 wrote to memory of 1544	1204	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	31
PID 1204 wrote to memory of 1544	1204	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	31
PID 1204 wrote to memory of 1544	1204	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	31
PID 1204 wrote to memory of 1544	1204	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	31
PID 1204 wrote to memory of 1544	1204	475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe	31

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe
"C:\Users\Admin\AppData\Local\Temp\475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:784
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\XDmcVzcsfBo.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:936
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\XDmcVzcsfBo" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5487.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1168
- C:\Users\Admin\AppData\Local\Temp\475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe
  "C:\Users\Admin\AppData\Local\Temp\475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1204
- - 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:1544

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

tmp5487.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp5487.tmp
Size 1KB
SHA256 f78c95ada2b5daf7aa8e71738f1d8b36f14be55a7245126d9563cae62a2f66f8
MD5 4ec4b04360ab7060b29c67101cd13267
SHA1 271278023ef4b1149b39f8ae568d62c042b86c23
SHA512 d20ba70ea3ba8b03dbc0768e99906e71e90cedbbd20ad02c2694a22271d1ec5a63a8d7b1304d7f70b7729d00889b9c76dd6771b1203fcfc19cf9c850bfd133d5
MD5 SHA1 SHA512

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memory/784-54-0x0000000000F30000-0x0000000000FF8000-memory.dmp

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memory/784-55-0x0000000075FC1000-0x0000000075FC3000-memory.dmp

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memory/784-56-0x0000000000490000-0x00000000004A6000-memory.dmp

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memory/784-57-0x0000000000620000-0x000000000062C000-memory.dmp

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memory/784-58-0x0000000005B90000-0x0000000005C12000-memory.dmp

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memory/784-63-0x0000000004980000-0x00000000049AA000-memory.dmp

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memory/936-87-0x0000000072F40000-0x00000000734EB000-memory.dmp

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memory/936-86-0x0000000072F40000-0x00000000734EB000-memory.dmp

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memory/1204-67-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/1204-69-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/1204-72-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/1204-85-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/1204-65-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/1204-64-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/1204-88-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/1544-76-0x0000000000090000-0x00000000000AA000-memory.dmp

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memory/1544-78-0x0000000000090000-0x00000000000AA000-memory.dmp

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memory/1544-81-0x0000000000090000-0x00000000000AA000-memory.dmp

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memory/1544-83-0x0000000000090000-0x00000000000AA000-memory.dmp

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