blustealer | 19b0d58c3611ccc99f681997248a835ac4a49572a50278f4f7c732237183db6a

General

Target

41570002689_20221001_05352297_HesapOzeti.exe
Size

1.1MB
MD5

6a58925feb3fe5477f8c44595d2c36cd
SHA1

1b9565b62bee0d29a4f21eb617a88e9682e09862
SHA256

19b0d58c3611ccc99f681997248a835ac4a49572a50278f4f7c732237183db6a
SHA512

fd83cb7cc2e9234f46f7b355a9ff66d26354adf1ba520d51ea3c95cf88ad6e618927d5c04ffa4248d887ad534d24b56a1485eeb6fbb40f603737012ff5898cde
SSDEEP

12288:o/r9+ljmhNLbDYmcIZQWDA9aHZVIAodG21+sq+AJkZnfYHVKyGr3CQK4HTN2i8E6:EsljMLbDYquFY0o+A2ZwhGraJ

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5412597166:AAGUaWxuTxxhNb-NRhiURcTMzuW9nhGoEs/sendMessage?chat_id=932962718

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/636-78-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/636-79-0x00000000000A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/636-81-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/636-83-0x0000000000090000-0x00000000000AA000-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\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
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\16.0\Outlook\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 1980 set thread context of 1336	1980	41570002689_20221001_05352297_HesapOzeti.exe	32
PID 1336 set thread context of 636	1336	41570002689_20221001_05352297_HesapOzeti.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
2040	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1980	41570002689_20221001_05352297_HesapOzeti.exe
1980	41570002689_20221001_05352297_HesapOzeti.exe
1980	41570002689_20221001_05352297_HesapOzeti.exe
1980	41570002689_20221001_05352297_HesapOzeti.exe
1980	41570002689_20221001_05352297_HesapOzeti.exe
1980	41570002689_20221001_05352297_HesapOzeti.exe
1104	powershell.exe
1980	41570002689_20221001_05352297_HesapOzeti.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1336	41570002689_20221001_05352297_HesapOzeti.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1980	41570002689_20221001_05352297_HesapOzeti.exe
Token: SeDebugPrivilege	1104	powershell.exe
Token: SeDebugPrivilege	636	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1336	41570002689_20221001_05352297_HesapOzeti.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1980 wrote to memory of 1104	1980	41570002689_20221001_05352297_HesapOzeti.exe	28
PID 1980 wrote to memory of 1104	1980	41570002689_20221001_05352297_HesapOzeti.exe	28
PID 1980 wrote to memory of 1104	1980	41570002689_20221001_05352297_HesapOzeti.exe	28
PID 1980 wrote to memory of 1104	1980	41570002689_20221001_05352297_HesapOzeti.exe	28
PID 1980 wrote to memory of 2040	1980	41570002689_20221001_05352297_HesapOzeti.exe	30
PID 1980 wrote to memory of 2040	1980	41570002689_20221001_05352297_HesapOzeti.exe	30
PID 1980 wrote to memory of 2040	1980	41570002689_20221001_05352297_HesapOzeti.exe	30
PID 1980 wrote to memory of 2040	1980	41570002689_20221001_05352297_HesapOzeti.exe	30
PID 1980 wrote to memory of 1336	1980	41570002689_20221001_05352297_HesapOzeti.exe	32
PID 1980 wrote to memory of 1336	1980	41570002689_20221001_05352297_HesapOzeti.exe	32
PID 1980 wrote to memory of 1336	1980	41570002689_20221001_05352297_HesapOzeti.exe	32
PID 1980 wrote to memory of 1336	1980	41570002689_20221001_05352297_HesapOzeti.exe	32
PID 1980 wrote to memory of 1336	1980	41570002689_20221001_05352297_HesapOzeti.exe	32
PID 1980 wrote to memory of 1336	1980	41570002689_20221001_05352297_HesapOzeti.exe	32
PID 1980 wrote to memory of 1336	1980	41570002689_20221001_05352297_HesapOzeti.exe	32
PID 1980 wrote to memory of 1336	1980	41570002689_20221001_05352297_HesapOzeti.exe	32
PID 1980 wrote to memory of 1336	1980	41570002689_20221001_05352297_HesapOzeti.exe	32
PID 1336 wrote to memory of 636	1336	41570002689_20221001_05352297_HesapOzeti.exe	33
PID 1336 wrote to memory of 636	1336	41570002689_20221001_05352297_HesapOzeti.exe	33
PID 1336 wrote to memory of 636	1336	41570002689_20221001_05352297_HesapOzeti.exe	33
PID 1336 wrote to memory of 636	1336	41570002689_20221001_05352297_HesapOzeti.exe	33
PID 1336 wrote to memory of 636	1336	41570002689_20221001_05352297_HesapOzeti.exe	33
PID 1336 wrote to memory of 636	1336	41570002689_20221001_05352297_HesapOzeti.exe	33
PID 1336 wrote to memory of 636	1336	41570002689_20221001_05352297_HesapOzeti.exe	33
PID 1336 wrote to memory of 636	1336	41570002689_20221001_05352297_HesapOzeti.exe	33
PID 1336 wrote to memory of 636	1336	41570002689_20221001_05352297_HesapOzeti.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\ 41570002689_20221001_05352297_HesapOzeti.exe
"C:\Users\Admin\AppData\Local\Temp\ 41570002689_20221001_05352297_HesapOzeti.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1980
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ZFkIYZK.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1104
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZFkIYZK" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAA16.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2040
- C:\Users\Admin\AppData\Local\Temp\ 41570002689_20221001_05352297_HesapOzeti.exe
  "C:\Users\Admin\AppData\Local\Temp\ 41570002689_20221001_05352297_HesapOzeti.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1336
- - 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:636

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpAA16.tmp

Filesize
1KB

MD5
e92c643043c78a2b5f2359ec8a525641

SHA1
31bba25c5bc84c92a6e0c46108c68b0106bca8d8

SHA256
1f4ca9b6cfb6a4229cf550fc6e4baf379b8355911a9c50865c555d862f4ac439

SHA512
15a4dbae1880353ea7dcdd8ac1b918a1ff9dbb8821745b1808eccb81a7f4a365d3d7346ed033da1b3cc2435ad493ccc560dc45ce23c3e5c0c4f76076aee4c6b3

Download Submit
memory/636-76-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/636-83-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/636-81-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/636-78-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1104-87-0x000000006EF00000-0x000000006F4AB000-memory.dmp

Filesize
5.7MB

Download
memory/1104-85-0x000000006EF00000-0x000000006F4AB000-memory.dmp

Filesize
5.7MB

Download
memory/1336-86-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1336-67-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1336-88-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1336-69-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1336-72-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1336-64-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1336-65-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1980-63-0x00000000048D0000-0x00000000048FC000-memory.dmp

Filesize
176KB

Download
memory/1980-58-0x0000000004A10000-0x0000000004A92000-memory.dmp

Filesize
520KB

Download
memory/1980-57-0x00000000004C0000-0x00000000004CC000-memory.dmp

Filesize
48KB

Download
memory/1980-56-0x0000000000260000-0x000000000027C000-memory.dmp

Filesize
112KB

Download
memory/1980-55-0x00000000756B1000-0x00000000756B3000-memory.dmp

Filesize
8KB

Download
memory/1980-54-0x0000000010550000-0x0000000010668000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads