blustealer | 3909f1e1d41d36e0f62bd770841a0a8ea28c2b7d52f2e2fc77457538fbd7a291

General

Target

Revised shipment.pdf.exe
Size

706KB
MD5

f79203454fd766c8189d00c43cfc7485
SHA1

fe44898d206f0b4ef9497e7b7b2e9dedcd4335aa
SHA256

3909f1e1d41d36e0f62bd770841a0a8ea28c2b7d52f2e2fc77457538fbd7a291
SHA512

2b88a745ec24591e5a5b28ade1470416a6bfe2bed86383c276736d0142ddae64bf985cd84772ac00512868f1741f3a7cab555a7a53f95eb5408a582d0fbb8ad1

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 1 IoCs

resource	yara_rule
behavioral2/memory/1336-157-0x0000000000560000-0x000000000057A000-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-1-5-21-2660308776-3705150086-26593515-1000\Control Panel\International\Geo\Nation	Revised shipment.pdf.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\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
67	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4328 set thread context of 3372	4328	Revised shipment.pdf.exe	103
PID 3372 set thread context of 1336	3372	Revised shipment.pdf.exe	104

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
532	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4328	Revised shipment.pdf.exe
4328	Revised shipment.pdf.exe
4328	Revised shipment.pdf.exe
4328	Revised shipment.pdf.exe
4328	Revised shipment.pdf.exe
4328	Revised shipment.pdf.exe
4328	Revised shipment.pdf.exe
2472	powershell.exe
2472	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4328	Revised shipment.pdf.exe
Token: SeDebugPrivilege	2472	powershell.exe
Token: SeDebugPrivilege	1336	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3372	Revised shipment.pdf.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4328 wrote to memory of 2472	4328	Revised shipment.pdf.exe	99
PID 4328 wrote to memory of 2472	4328	Revised shipment.pdf.exe	99
PID 4328 wrote to memory of 2472	4328	Revised shipment.pdf.exe	99
PID 4328 wrote to memory of 532	4328	Revised shipment.pdf.exe	101
PID 4328 wrote to memory of 532	4328	Revised shipment.pdf.exe	101
PID 4328 wrote to memory of 532	4328	Revised shipment.pdf.exe	101
PID 4328 wrote to memory of 3372	4328	Revised shipment.pdf.exe	103
PID 4328 wrote to memory of 3372	4328	Revised shipment.pdf.exe	103
PID 4328 wrote to memory of 3372	4328	Revised shipment.pdf.exe	103
PID 4328 wrote to memory of 3372	4328	Revised shipment.pdf.exe	103
PID 4328 wrote to memory of 3372	4328	Revised shipment.pdf.exe	103
PID 4328 wrote to memory of 3372	4328	Revised shipment.pdf.exe	103
PID 4328 wrote to memory of 3372	4328	Revised shipment.pdf.exe	103
PID 4328 wrote to memory of 3372	4328	Revised shipment.pdf.exe	103
PID 3372 wrote to memory of 1336	3372	Revised shipment.pdf.exe	104
PID 3372 wrote to memory of 1336	3372	Revised shipment.pdf.exe	104
PID 3372 wrote to memory of 1336	3372	Revised shipment.pdf.exe	104
PID 3372 wrote to memory of 1336	3372	Revised shipment.pdf.exe	104
PID 3372 wrote to memory of 1336	3372	Revised shipment.pdf.exe	104

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Revised shipment.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Revised shipment.pdf.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4328
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\vEOwgfttl.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2472
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vEOwgfttl" /XML "C:\Users\Admin\AppData\Local\Temp\tmp87FC.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:532
- C:\Users\Admin\AppData\Local\Temp\Revised shipment.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Revised shipment.pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3372
- - 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:1336

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\tmp87FC.tmp

Filesize
1KB

MD5
3eb3c097ba2c3d87cef440eccd75e5a8

SHA1
3d37685c8c3af356712ac86707e932eda8b401a1

SHA256
9ca44b0ea54f8d61a2ff130e9f76c3857006ff70fbb3e3489a09113bbb2d69b2

SHA512
a9c9145cab1ea0ef9eb6448da470780f5cd5414632c7d3d6f2ea9c00316088920bf1143cee7e02b4ae52f8d7416582427ee57e19ec4360764cc7ed6bf0edaba6

Download Submit
memory/1336-157-0x0000000000560000-0x000000000057A000-memory.dmp

Filesize
104KB

Download
memory/2472-146-0x0000000005990000-0x00000000059F6000-memory.dmp

Filesize
408KB

Download
memory/2472-160-0x0000000007610000-0x000000000761E000-memory.dmp

Filesize
56KB

Download
memory/2472-162-0x0000000007700000-0x0000000007708000-memory.dmp

Filesize
32KB

Download
memory/2472-138-0x00000000027B0000-0x00000000027E6000-memory.dmp

Filesize
216KB

Download
memory/2472-161-0x0000000007720000-0x000000000773A000-memory.dmp

Filesize
104KB

Download
memory/2472-140-0x00000000052F0000-0x0000000005918000-memory.dmp

Filesize
6.2MB

Download
memory/2472-153-0x0000000006680000-0x000000000669E000-memory.dmp

Filesize
120KB

Download
memory/2472-159-0x0000000007660000-0x00000000076F6000-memory.dmp

Filesize
600KB

Download
memory/2472-158-0x0000000007460000-0x000000000746A000-memory.dmp

Filesize
40KB

Download
memory/2472-155-0x00000000073E0000-0x00000000073FA000-memory.dmp

Filesize
104KB

Download
memory/2472-144-0x0000000005010000-0x0000000005032000-memory.dmp

Filesize
136KB

Download
memory/2472-154-0x0000000007A30000-0x00000000080AA000-memory.dmp

Filesize
6.5MB

Download
memory/2472-150-0x00000000060E0000-0x00000000060FE000-memory.dmp

Filesize
120KB

Download
memory/2472-151-0x00000000070C0000-0x00000000070F2000-memory.dmp

Filesize
200KB

Download
memory/2472-152-0x00000000704D0000-0x000000007051C000-memory.dmp

Filesize
304KB

Download
memory/3372-149-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/3372-145-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/3372-142-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/3372-163-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4328-130-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/4328-132-0x0000000004E50000-0x0000000004EE2000-memory.dmp

Filesize
584KB

Download
memory/4328-131-0x0000000005350000-0x00000000058F4000-memory.dmp

Filesize
5.6MB

Download
memory/4328-135-0x000000000B0D0000-0x000000000B136000-memory.dmp

Filesize
408KB

Download
memory/4328-133-0x0000000004F00000-0x0000000004F0A000-memory.dmp

Filesize
40KB

Download
memory/4328-134-0x000000000ADC0000-0x000000000AE5C000-memory.dmp

Filesize
624KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads