blustealer | e020b424ea22cc6206b882a18f6d1e5e39499982e96bc2dfc9bd461e03d40149

General

Target

Request For Quotation And Sample.pdf.exe
Size

188KB
MD5

c5fac65456d0cf57baa56f43b6935ac6
SHA1

f0128eb5a26160c60a5f41cf1987b34456f21e4c
SHA256

e020b424ea22cc6206b882a18f6d1e5e39499982e96bc2dfc9bd461e03d40149
SHA512

602d4cba9760f5592dfb19fe25eba9fcdb15717977404c602bb56e44e887a3823243a8cf33dfa0f86c217b8289840040cc92d41c19e7424be38269774ab051cd

Score

10^/10

blustealer stormkitty collection persistence spyware 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/2044-72-0x00000000001A0000-0x00000000001BA000-memory.dmp	family_stormkitty
behavioral1/memory/2044-73-0x00000000001B4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/2044-75-0x00000000001A0000-0x00000000001BA000-memory.dmp	family_stormkitty
behavioral1/memory/2044-77-0x00000000001A0000-0x00000000001BA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\firebase = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\\\fishnets.exe"	cvtres.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
8	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1656 set thread context of 1324	1656	Request For Quotation And Sample.pdf.exe	27
PID 1324 set thread context of 2044	1324	cvtres.exe	28

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe	cvtres.exe

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

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1324	cvtres.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2044	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1324	cvtres.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1656 wrote to memory of 1324	1656	Request For Quotation And Sample.pdf.exe	27
PID 1656 wrote to memory of 1324	1656	Request For Quotation And Sample.pdf.exe	27
PID 1656 wrote to memory of 1324	1656	Request For Quotation And Sample.pdf.exe	27
PID 1656 wrote to memory of 1324	1656	Request For Quotation And Sample.pdf.exe	27
PID 1656 wrote to memory of 1324	1656	Request For Quotation And Sample.pdf.exe	27
PID 1656 wrote to memory of 1324	1656	Request For Quotation And Sample.pdf.exe	27
PID 1656 wrote to memory of 1324	1656	Request For Quotation And Sample.pdf.exe	27
PID 1656 wrote to memory of 1324	1656	Request For Quotation And Sample.pdf.exe	27
PID 1656 wrote to memory of 1324	1656	Request For Quotation And Sample.pdf.exe	27
PID 1324 wrote to memory of 2044	1324	cvtres.exe	28
PID 1324 wrote to memory of 2044	1324	cvtres.exe	28
PID 1324 wrote to memory of 2044	1324	cvtres.exe	28
PID 1324 wrote to memory of 2044	1324	cvtres.exe	28
PID 1324 wrote to memory of 2044	1324	cvtres.exe	28
PID 1324 wrote to memory of 2044	1324	cvtres.exe	28
PID 1324 wrote to memory of 2044	1324	cvtres.exe	28
PID 1324 wrote to memory of 2044	1324	cvtres.exe	28
PID 1324 wrote to memory of 2044	1324	cvtres.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Request For Quotation And Sample.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Request For Quotation And Sample.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1656
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Drops file in Windows directory
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1324
- - 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:2044

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1324-65-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1324-58-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1324-80-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1324-57-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1324-68-0x0000000075591000-0x0000000075593000-memory.dmp

Filesize
8KB

Download
memory/1324-60-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1324-62-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1324-71-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1656-55-0x00000000002F0000-0x0000000000312000-memory.dmp

Filesize
136KB

Download
memory/1656-56-0x00000000003C0000-0x00000000003E4000-memory.dmp

Filesize
144KB

Download
memory/1656-54-0x0000000000850000-0x0000000000882000-memory.dmp

Filesize
200KB

Download
memory/2044-69-0x00000000001A0000-0x00000000001BA000-memory.dmp

Filesize
104KB

Download
memory/2044-72-0x00000000001A0000-0x00000000001BA000-memory.dmp

Filesize
104KB

Download
memory/2044-75-0x00000000001A0000-0x00000000001BA000-memory.dmp

Filesize
104KB

Download
memory/2044-77-0x00000000001A0000-0x00000000001BA000-memory.dmp

Filesize
104KB

Download

Analysis

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