blustealer | a29933d22324521ab3f6fccd48df10ae472f62e73ada2f6550d971322594e071

Analysis

max time kernel
142s
max time network
77s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
07-09-2022 14:57

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General

Target

hesaphareketi-01.pdf.exe
Size

967KB
MD5

20be6ec20e3f2b6dab78f6d42d31371c
SHA1

d54e72166d35c429dee3b5c5e227afe2fcb7ad7c
SHA256

a29933d22324521ab3f6fccd48df10ae472f62e73ada2f6550d971322594e071
SHA512

e24cf1d9fa97b687273a94fcdb8d1571b23905cfe2123e08ff5d3fdf85a02e7c8107fdb6826a8690ec3f38c1d1d05f89ba7ede26a93f4f6245d46a18f5466ad0
SSDEEP

12288:NA9b0ZeV01NRnWNwwUyJRcOKcN3XhYxkY3hZ29:wXyrpcwVyTcOJNHOx+

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/1156-80-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1156-81-0x00000000000A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/1156-83-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1156-85-0x0000000000090000-0x00000000000AA000-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 1988 set thread context of 1712	1988	hesaphareketi-01.pdf.exe	32
PID 1712 set thread context of 1156	1712	hesaphareketi-01.pdf.exe	33

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
1304	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1988	hesaphareketi-01.pdf.exe
1988	hesaphareketi-01.pdf.exe
1988	hesaphareketi-01.pdf.exe
1988	hesaphareketi-01.pdf.exe
1988	hesaphareketi-01.pdf.exe
1988	hesaphareketi-01.pdf.exe
1988	hesaphareketi-01.pdf.exe
1552	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1712	hesaphareketi-01.pdf.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1988	hesaphareketi-01.pdf.exe
Token: SeDebugPrivilege	1552	powershell.exe
Token: SeDebugPrivilege	1156	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1712	hesaphareketi-01.pdf.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1988 wrote to memory of 1552	1988	hesaphareketi-01.pdf.exe	27
PID 1988 wrote to memory of 1552	1988	hesaphareketi-01.pdf.exe	27
PID 1988 wrote to memory of 1552	1988	hesaphareketi-01.pdf.exe	27
PID 1988 wrote to memory of 1552	1988	hesaphareketi-01.pdf.exe	27
PID 1988 wrote to memory of 1304	1988	hesaphareketi-01.pdf.exe	29
PID 1988 wrote to memory of 1304	1988	hesaphareketi-01.pdf.exe	29
PID 1988 wrote to memory of 1304	1988	hesaphareketi-01.pdf.exe	29
PID 1988 wrote to memory of 1304	1988	hesaphareketi-01.pdf.exe	29
PID 1988 wrote to memory of 520	1988	hesaphareketi-01.pdf.exe	31
PID 1988 wrote to memory of 520	1988	hesaphareketi-01.pdf.exe	31
PID 1988 wrote to memory of 520	1988	hesaphareketi-01.pdf.exe	31
PID 1988 wrote to memory of 520	1988	hesaphareketi-01.pdf.exe	31
PID 1988 wrote to memory of 1712	1988	hesaphareketi-01.pdf.exe	32
PID 1988 wrote to memory of 1712	1988	hesaphareketi-01.pdf.exe	32
PID 1988 wrote to memory of 1712	1988	hesaphareketi-01.pdf.exe	32
PID 1988 wrote to memory of 1712	1988	hesaphareketi-01.pdf.exe	32
PID 1988 wrote to memory of 1712	1988	hesaphareketi-01.pdf.exe	32
PID 1988 wrote to memory of 1712	1988	hesaphareketi-01.pdf.exe	32
PID 1988 wrote to memory of 1712	1988	hesaphareketi-01.pdf.exe	32
PID 1988 wrote to memory of 1712	1988	hesaphareketi-01.pdf.exe	32
PID 1988 wrote to memory of 1712	1988	hesaphareketi-01.pdf.exe	32
PID 1712 wrote to memory of 1156	1712	hesaphareketi-01.pdf.exe	33
PID 1712 wrote to memory of 1156	1712	hesaphareketi-01.pdf.exe	33
PID 1712 wrote to memory of 1156	1712	hesaphareketi-01.pdf.exe	33
PID 1712 wrote to memory of 1156	1712	hesaphareketi-01.pdf.exe	33
PID 1712 wrote to memory of 1156	1712	hesaphareketi-01.pdf.exe	33
PID 1712 wrote to memory of 1156	1712	hesaphareketi-01.pdf.exe	33
PID 1712 wrote to memory of 1156	1712	hesaphareketi-01.pdf.exe	33
PID 1712 wrote to memory of 1156	1712	hesaphareketi-01.pdf.exe	33
PID 1712 wrote to memory of 1156	1712	hesaphareketi-01.pdf.exe	33

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\hesaphareketi-01.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\hesaphareketi-01.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1988
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\WIPlLr.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1552
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WIPlLr" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCFBE.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1304
- C:\Users\Admin\AppData\Local\Temp\hesaphareketi-01.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\hesaphareketi-01.pdf.exe"
  2⤵
  PID:520
- C:\Users\Admin\AppData\Local\Temp\hesaphareketi-01.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\hesaphareketi-01.pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1712
- - 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:1156

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpCFBE.tmp

Filesize
1KB

MD5
1729fc9c4a43d427b47bb8e2a251a95a

SHA1
d16dce348e9d1ce49d199421b403d532751e5a60

SHA256
740c07cf69230e7d89a8047b16979ca004555716d68d22da0b3de0530c030831

SHA512
dff7bf087502ae9b13293b3b38afcf9fc08bd9ef703b34b7f409bd24b24d4740bb463e931f5e878db3b4eed703a7cf08c255c8d65a554d435e3b56c3378983f4

Download Submit
memory/1156-85-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1156-83-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1156-80-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1156-78-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1552-77-0x000000006ECB0000-0x000000006F25B000-memory.dmp

Filesize
5.7MB

Download
memory/1552-87-0x000000006ECB0000-0x000000006F25B000-memory.dmp

Filesize
5.7MB

Download
memory/1712-76-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1712-64-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1712-69-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1712-72-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1712-88-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1712-65-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1712-67-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1988-58-0x0000000002300000-0x0000000002382000-memory.dmp

Filesize
520KB

Download
memory/1988-57-0x0000000000520000-0x000000000052C000-memory.dmp

Filesize
48KB

Download
memory/1988-56-0x00000000004A0000-0x00000000004BA000-memory.dmp

Filesize
104KB

Download
memory/1988-55-0x00000000761F1000-0x00000000761F3000-memory.dmp

Filesize
8KB

Download
memory/1988-63-0x0000000005030000-0x000000000505C000-memory.dmp

Filesize
176KB

Download
memory/1988-54-0x0000000000DC0000-0x0000000000EB8000-memory.dmp

Filesize
992KB

Download