blustealer | 013df4f0d833c4efa3faff7ac1ac571159d8843116a095beaab79651490b0f75

General

Target

346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe
Size

924KB
MD5

6b2874b71838bb35b1bbf5394322cf2a
SHA1

e9f112a2cd8af4359d3833c59421b89dde2f52dd
SHA256

346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53
SHA512

4c315bbc83e1bc418d3bbbc6212a0c42d4aa4b73b4bf8c9f9bc7244b7fc833c5baa105b5c983383720cd04b415fa07d881857daf4efce028c21f947b8ecd261b
SSDEEP

12288:sjVF75eQyMCHA4bPgkgPwqoXYkCkgrQlU2h3Wqzqqj3rZ8D8R/7pkqIwpq:kZ50MEZXYkCTQlU2VWqz9NWA/7R0

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/672-75-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/672-76-0x00000000000A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/672-78-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/672-80-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\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 1788 set thread context of 1552	1788	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe	27
PID 1552 set thread context of 672	1552	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe	28

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 4 IoCs

pid	Process
1788	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe
1788	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe
1788	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe
1788	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1552	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1788	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe
Token: SeDebugPrivilege	672	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1552	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1788 wrote to memory of 1552	1788	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe	27
PID 1788 wrote to memory of 1552	1788	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe	27
PID 1788 wrote to memory of 1552	1788	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe	27
PID 1788 wrote to memory of 1552	1788	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe	27
PID 1788 wrote to memory of 1552	1788	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe	27
PID 1788 wrote to memory of 1552	1788	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe	27
PID 1788 wrote to memory of 1552	1788	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe	27
PID 1788 wrote to memory of 1552	1788	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe	27
PID 1788 wrote to memory of 1552	1788	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe	27
PID 1552 wrote to memory of 672	1552	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe	28
PID 1552 wrote to memory of 672	1552	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe	28
PID 1552 wrote to memory of 672	1552	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe	28
PID 1552 wrote to memory of 672	1552	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe	28
PID 1552 wrote to memory of 672	1552	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe	28
PID 1552 wrote to memory of 672	1552	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe	28
PID 1552 wrote to memory of 672	1552	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe	28
PID 1552 wrote to memory of 672	1552	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe	28
PID 1552 wrote to memory of 672	1552	346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe
"C:\Users\Admin\AppData\Local\Temp\346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1788
- C:\Users\Admin\AppData\Local\Temp\346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe
  "C:\Users\Admin\AppData\Local\Temp\346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1552
- - 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:672

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

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

Replay Monitor

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Downloads

memory/672-73-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/672-80-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/672-78-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/672-75-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1552-72-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1552-82-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1552-61-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1552-63-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1552-65-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1552-68-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1552-60-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1788-54-0x0000000000CA0000-0x0000000000D8E000-memory.dmp

Filesize
952KB

Download
memory/1788-58-0x0000000007E80000-0x0000000007F06000-memory.dmp

Filesize
536KB

Download
memory/1788-57-0x0000000000350000-0x000000000035C000-memory.dmp

Filesize
48KB

Download
memory/1788-56-0x0000000000390000-0x00000000003A8000-memory.dmp

Filesize
96KB

Download
memory/1788-55-0x00000000761F1000-0x00000000761F3000-memory.dmp

Filesize
8KB

Download
memory/1788-59-0x0000000000B60000-0x0000000000B90000-memory.dmp

Filesize
192KB

Download

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