blustealer | 537eefdd89c53025ce3e521a0dde0d2dd99bcf94f6063fd6b0823e259c72a26d

General

Target

537eefdd89c53025ce3e521a0dde0d2dd99bcf94f6063fd6b0823e259c72a26d.exe
Size

158KB
MD5

da88b9d5a99843082b9258e087ae0ea9
SHA1

d425103a22463af1f8070f394a147b0e2d3ca8e9
SHA256

537eefdd89c53025ce3e521a0dde0d2dd99bcf94f6063fd6b0823e259c72a26d
SHA512

753c7298750a7342a1f14fe9d1bc5737f3f9de598192d4ea68621793024c210690f243d6e4092920c9204cd6517e5e9add89f61cad46a99150a4964d9c35d969
SSDEEP

3072:GspYocLKwD+MctFYFroOyKMPggSE9bdB4/tTc0owUdTZ5yMHHMc:YJN8FIWKzE9bdB4VTotMc

Score

10^/10

blustealer stormkitty collection spyware stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5627356603:AAG-Mx0TbSHRRW6IwndrpX3VLZdhd6C-Zac/sendMessage?chat_id=5472437377

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/1516-70-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1516-71-0x00000000000A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/1516-73-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1516-75-0x0000000000090000-0x00000000000AA000-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\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
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

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

Data from Local System
T1005

Credentials in Files
T1081

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
3	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1972 set thread context of 1624	1972	537eefdd89c53025ce3e521a0dde0d2dd99bcf94f6063fd6b0823e259c72a26d.exe	28
PID 1624 set thread context of 1516	1624	cvtres.exe	29

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 use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1516	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1624	cvtres.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 1624	1972	537eefdd89c53025ce3e521a0dde0d2dd99bcf94f6063fd6b0823e259c72a26d.exe	28
PID 1972 wrote to memory of 1624	1972	537eefdd89c53025ce3e521a0dde0d2dd99bcf94f6063fd6b0823e259c72a26d.exe	28
PID 1972 wrote to memory of 1624	1972	537eefdd89c53025ce3e521a0dde0d2dd99bcf94f6063fd6b0823e259c72a26d.exe	28
PID 1972 wrote to memory of 1624	1972	537eefdd89c53025ce3e521a0dde0d2dd99bcf94f6063fd6b0823e259c72a26d.exe	28
PID 1972 wrote to memory of 1624	1972	537eefdd89c53025ce3e521a0dde0d2dd99bcf94f6063fd6b0823e259c72a26d.exe	28
PID 1972 wrote to memory of 1624	1972	537eefdd89c53025ce3e521a0dde0d2dd99bcf94f6063fd6b0823e259c72a26d.exe	28
PID 1972 wrote to memory of 1624	1972	537eefdd89c53025ce3e521a0dde0d2dd99bcf94f6063fd6b0823e259c72a26d.exe	28
PID 1972 wrote to memory of 1624	1972	537eefdd89c53025ce3e521a0dde0d2dd99bcf94f6063fd6b0823e259c72a26d.exe	28
PID 1972 wrote to memory of 1624	1972	537eefdd89c53025ce3e521a0dde0d2dd99bcf94f6063fd6b0823e259c72a26d.exe	28
PID 1624 wrote to memory of 1516	1624	cvtres.exe	29
PID 1624 wrote to memory of 1516	1624	cvtres.exe	29
PID 1624 wrote to memory of 1516	1624	cvtres.exe	29
PID 1624 wrote to memory of 1516	1624	cvtres.exe	29
PID 1624 wrote to memory of 1516	1624	cvtres.exe	29
PID 1624 wrote to memory of 1516	1624	cvtres.exe	29
PID 1624 wrote to memory of 1516	1624	cvtres.exe	29
PID 1624 wrote to memory of 1516	1624	cvtres.exe	29
PID 1624 wrote to memory of 1516	1624	cvtres.exe	29

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\537eefdd89c53025ce3e521a0dde0d2dd99bcf94f6063fd6b0823e259c72a26d.exe
"C:\Users\Admin\AppData\Local\Temp\537eefdd89c53025ce3e521a0dde0d2dd99bcf94f6063fd6b0823e259c72a26d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1972
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1624
- - 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:1516

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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/1516-68-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1516-75-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1516-73-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1516-70-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1624-56-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1624-64-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1624-67-0x0000000075501000-0x0000000075503000-memory.dmp

Filesize
8KB

Download
memory/1624-61-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1624-59-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1624-57-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1624-77-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1624-78-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1972-54-0x0000000000E70000-0x0000000000E9A000-memory.dmp

Filesize
168KB

Download
memory/1972-55-0x0000000000230000-0x0000000000238000-memory.dmp

Filesize
32KB

Download

Analysis

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