blustealer | f6fe8be101673d1d50154bee3058e8369b476aef3087e4ab33d306f0ef02c384

General

Target

Proof_Of_Payment.exe
Size

9KB
MD5

31b0e183c76c3abca004ca61889690b2
SHA1

65f30d8010385d7062eca3269d8c52fc9fcc2e09
SHA256

4947ed5a393e7e294356cc60e17ce523b05ffc7774c1cd4bac128a0b83ecec22
SHA512

314f614e825eed5a24fc3a7d21047d3223902c7ca136b1c61a7d9062093ff69147979eaf1406b0ebe709deba4926e19aecb6900659fa3371b28b35cfc3a095dc

Score

10^/10

blustealer stormkitty collection persistence 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/4884-152-0x0000000001300000-0x000000000131A000-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-1-5-21-3463845317-933582289-45817732-1000\Control Panel\International\Geo\Nation	Proof_Of_Payment.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

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-1-5-21-3463845317-933582289-45817732-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Thmykqlff = "\"C:\\Users\\Admin\\AppData\\Roaming\\Axzwy\\Thmykqlff.exe\""	Proof_Of_Payment.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 1992 set thread context of 3012	1992	Proof_Of_Payment.exe	92
PID 3012 set thread context of 4884	3012	InstallUtil.exe	94

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

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
1992	Proof_Of_Payment.exe
3776	powershell.exe
3776	powershell.exe
1992	Proof_Of_Payment.exe
1992	Proof_Of_Payment.exe
1992	Proof_Of_Payment.exe
1992	Proof_Of_Payment.exe
1992	Proof_Of_Payment.exe
1992	Proof_Of_Payment.exe
1992	Proof_Of_Payment.exe
1992	Proof_Of_Payment.exe
1992	Proof_Of_Payment.exe
1992	Proof_Of_Payment.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3012	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1992	Proof_Of_Payment.exe
Token: SeDebugPrivilege	3776	powershell.exe
Token: SeDebugPrivilege	4884	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3012	InstallUtil.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 3776	1992	Proof_Of_Payment.exe	83
PID 1992 wrote to memory of 3776	1992	Proof_Of_Payment.exe	83
PID 1992 wrote to memory of 3776	1992	Proof_Of_Payment.exe	83
PID 1992 wrote to memory of 932	1992	Proof_Of_Payment.exe	90
PID 1992 wrote to memory of 932	1992	Proof_Of_Payment.exe	90
PID 1992 wrote to memory of 932	1992	Proof_Of_Payment.exe	90
PID 1992 wrote to memory of 3604	1992	Proof_Of_Payment.exe	91
PID 1992 wrote to memory of 3604	1992	Proof_Of_Payment.exe	91
PID 1992 wrote to memory of 3604	1992	Proof_Of_Payment.exe	91
PID 1992 wrote to memory of 3012	1992	Proof_Of_Payment.exe	92
PID 1992 wrote to memory of 3012	1992	Proof_Of_Payment.exe	92
PID 1992 wrote to memory of 3012	1992	Proof_Of_Payment.exe	92
PID 1992 wrote to memory of 3012	1992	Proof_Of_Payment.exe	92
PID 1992 wrote to memory of 3012	1992	Proof_Of_Payment.exe	92
PID 1992 wrote to memory of 3012	1992	Proof_Of_Payment.exe	92
PID 1992 wrote to memory of 3012	1992	Proof_Of_Payment.exe	92
PID 1992 wrote to memory of 3012	1992	Proof_Of_Payment.exe	92
PID 3012 wrote to memory of 4884	3012	InstallUtil.exe	94
PID 3012 wrote to memory of 4884	3012	InstallUtil.exe	94
PID 3012 wrote to memory of 4884	3012	InstallUtil.exe	94
PID 3012 wrote to memory of 4884	3012	InstallUtil.exe	94
PID 3012 wrote to memory of 4884	3012	InstallUtil.exe	94

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Proof_Of_Payment.exe
"C:\Users\Admin\AppData\Local\Temp\Proof_Of_Payment.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMwA=
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3776
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  2⤵
  PID:932
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  2⤵
  PID:3604
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3012
- - 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:4884

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

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

memory/1992-133-0x0000000005A70000-0x0000000005A92000-memory.dmp

Filesize
136KB

Download
memory/1992-132-0x0000000000180000-0x0000000000188000-memory.dmp

Filesize
32KB

Download
memory/3012-150-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3012-153-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3012-147-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3012-145-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3776-140-0x0000000007B60000-0x00000000081DA000-memory.dmp

Filesize
6.5MB

Download
memory/3776-135-0x0000000004D10000-0x0000000004D46000-memory.dmp

Filesize
216KB

Download
memory/3776-141-0x00000000067F0000-0x000000000680A000-memory.dmp

Filesize
104KB

Download
memory/3776-136-0x00000000054F0000-0x0000000005B18000-memory.dmp

Filesize
6.2MB

Download
memory/3776-139-0x00000000062F0000-0x000000000630E000-memory.dmp

Filesize
120KB

Download
memory/3776-138-0x0000000005C80000-0x0000000005CE6000-memory.dmp

Filesize
408KB

Download
memory/3776-137-0x0000000005B20000-0x0000000005B86000-memory.dmp

Filesize
408KB

Download
memory/4884-152-0x0000000001300000-0x000000000131A000-memory.dmp

Filesize
104KB

Download
memory/4884-154-0x0000000006010000-0x00000000060AC000-memory.dmp

Filesize
624KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads