blustealer | 4a4ce6ec040bc9218e968e392a46a9e19380bf8be1bc7f989715e2d53770c77f

General

Target

20220906 - 00020000001001.pdf.exe
Size

871KB
MD5

48ed3a5b89df4c83f43c231d190c4726
SHA1

7acba69249c5081577c60d5e05c5b96ffc3bf1de
SHA256

4a4ce6ec040bc9218e968e392a46a9e19380bf8be1bc7f989715e2d53770c77f
SHA512

d1a89fa9fdbe13912a45a69084bd14a3ad593106b061e55c872d7985407e118da33741db81de4565b99d613db139bf3cd32c33ed015a73bf82582ed0d8cddc38
SSDEEP

6144:1Rlbcr0FdRmvct7YOjTZGN6O46h5iIWROT+e1L1ludK0INglez2YNnIkta8mhiKS:d3pz05iveBludK0EhNIkQ900pw3bK

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

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/1556-81-0x00000000000E4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/1556-80-0x00000000000D0000-0x00000000000EA000-memory.dmp	family_stormkitty
behavioral1/memory/1556-83-0x00000000000D0000-0x00000000000EA000-memory.dmp	family_stormkitty
behavioral1/memory/1556-85-0x00000000000D0000-0x00000000000EA000-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 1184 set thread context of 1280	1184	20220906 - 00020000001001.pdf.exe	31
PID 1280 set thread context of 1556	1280	20220906 - 00020000001001.pdf.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
1880	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1184	20220906 - 00020000001001.pdf.exe
1184	20220906 - 00020000001001.pdf.exe
1184	20220906 - 00020000001001.pdf.exe
1184	20220906 - 00020000001001.pdf.exe
1184	20220906 - 00020000001001.pdf.exe
1184	20220906 - 00020000001001.pdf.exe
864	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1280	20220906 - 00020000001001.pdf.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1184	20220906 - 00020000001001.pdf.exe
Token: SeDebugPrivilege	864	powershell.exe
Token: SeDebugPrivilege	1556	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1280	20220906 - 00020000001001.pdf.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1184 wrote to memory of 864	1184	20220906 - 00020000001001.pdf.exe	27
PID 1184 wrote to memory of 864	1184	20220906 - 00020000001001.pdf.exe	27
PID 1184 wrote to memory of 864	1184	20220906 - 00020000001001.pdf.exe	27
PID 1184 wrote to memory of 864	1184	20220906 - 00020000001001.pdf.exe	27
PID 1184 wrote to memory of 1880	1184	20220906 - 00020000001001.pdf.exe	29
PID 1184 wrote to memory of 1880	1184	20220906 - 00020000001001.pdf.exe	29
PID 1184 wrote to memory of 1880	1184	20220906 - 00020000001001.pdf.exe	29
PID 1184 wrote to memory of 1880	1184	20220906 - 00020000001001.pdf.exe	29
PID 1184 wrote to memory of 1280	1184	20220906 - 00020000001001.pdf.exe	31
PID 1184 wrote to memory of 1280	1184	20220906 - 00020000001001.pdf.exe	31
PID 1184 wrote to memory of 1280	1184	20220906 - 00020000001001.pdf.exe	31
PID 1184 wrote to memory of 1280	1184	20220906 - 00020000001001.pdf.exe	31
PID 1184 wrote to memory of 1280	1184	20220906 - 00020000001001.pdf.exe	31
PID 1184 wrote to memory of 1280	1184	20220906 - 00020000001001.pdf.exe	31
PID 1184 wrote to memory of 1280	1184	20220906 - 00020000001001.pdf.exe	31
PID 1184 wrote to memory of 1280	1184	20220906 - 00020000001001.pdf.exe	31
PID 1184 wrote to memory of 1280	1184	20220906 - 00020000001001.pdf.exe	31
PID 1280 wrote to memory of 1556	1280	20220906 - 00020000001001.pdf.exe	32
PID 1280 wrote to memory of 1556	1280	20220906 - 00020000001001.pdf.exe	32
PID 1280 wrote to memory of 1556	1280	20220906 - 00020000001001.pdf.exe	32
PID 1280 wrote to memory of 1556	1280	20220906 - 00020000001001.pdf.exe	32
PID 1280 wrote to memory of 1556	1280	20220906 - 00020000001001.pdf.exe	32
PID 1280 wrote to memory of 1556	1280	20220906 - 00020000001001.pdf.exe	32
PID 1280 wrote to memory of 1556	1280	20220906 - 00020000001001.pdf.exe	32
PID 1280 wrote to memory of 1556	1280	20220906 - 00020000001001.pdf.exe	32
PID 1280 wrote to memory of 1556	1280	20220906 - 00020000001001.pdf.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\20220906 - 00020000001001.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\20220906 - 00020000001001.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\fDmOIVxv.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:864
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fDmOIVxv" /XML "C:\Users\Admin\AppData\Local\Temp\tmp17B6.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1880
- C:\Users\Admin\AppData\Local\Temp\20220906 - 00020000001001.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\20220906 - 00020000001001.pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1280
- - 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:1556

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\tmp17B6.tmp

Filesize
1KB

MD5
8bc928839fc441c241b1e292030ffb93

SHA1
71d10637ea38ce8a5056af1a2e88db123fc2f1e1

SHA256
a1e452b0b45a8981368d6c380dad5642a1f7226d50fb816d664b7b5c4c96cee6

SHA512
bf32cee3e370c6c6fd1b236ecd7702290dbeac680fc8e8d8a2135c85d643e122af2f0eb8b89bc1cb072e9506466c17f65d605d3f706da411ed160676525bd824

Download Submit
memory/864-87-0x000000006E340000-0x000000006E8EB000-memory.dmp

Filesize
5.7MB

Download
memory/864-77-0x000000006E340000-0x000000006E8EB000-memory.dmp

Filesize
5.7MB

Download
memory/1184-63-0x0000000004F00000-0x0000000004F2C000-memory.dmp

Filesize
176KB

Download
memory/1184-58-0x0000000005180000-0x0000000005202000-memory.dmp

Filesize
520KB

Download
memory/1184-55-0x0000000075A11000-0x0000000075A13000-memory.dmp

Filesize
8KB

Download
memory/1184-57-0x0000000000A50000-0x0000000000A5C000-memory.dmp

Filesize
48KB

Download
memory/1184-54-0x0000000001180000-0x0000000001260000-memory.dmp

Filesize
896KB

Download
memory/1184-56-0x0000000000440000-0x000000000045A000-memory.dmp

Filesize
104KB

Download
memory/1280-67-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1280-65-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1280-69-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1280-72-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1280-76-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1280-64-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1280-88-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1556-80-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/1556-83-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/1556-78-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/1556-85-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads