blustealer | 46e9dd942a0ac14a2d73e9058997275cd3cbdb024fded3598f9970c98b31becf

General

Target

account.exe
Size

834KB
MD5

ed087331c9c97859d6d30bca5245b42d
SHA1

6f1f422171174486c9de328041a0606273b763aa
SHA256

15af08408332677507425dd21c6e04fa469e1129c21dc9ae2d830cc5c8aa0642
SHA512

336290c2b7b578fd9022b8d2b5708f27be6e56a8ac2cdcc2369a705896ad00a6920c76d295f24715c3063de4e71e7829cccd80a1c63558dc662b7544522daf0a
SSDEEP

12288:nF75eRgPwqoXY+mzoRtbvRT7PJ7Na+6ZmvatTu7Fm8gAxYS6L9ETD:nZ5wXY+mzo3bv/Ra+CmiRusyYD

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5402813712:AAG__8vfwqo_1K9XHIpxzTR9T7UW4raysO4/sendMessage?chat_id=5034680713

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/1940-79-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1940-80-0x00000000000A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/1940-82-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1940-84-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\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 1100 set thread context of 576	1100	account.exe	32
PID 576 set thread context of 1940	576	account.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
896	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1772	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1772	powershell.exe
Token: SeDebugPrivilege	1940	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
576	account.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1100 wrote to memory of 1772	1100	account.exe	28
PID 1100 wrote to memory of 1772	1100	account.exe	28
PID 1100 wrote to memory of 1772	1100	account.exe	28
PID 1100 wrote to memory of 1772	1100	account.exe	28
PID 1100 wrote to memory of 896	1100	account.exe	30
PID 1100 wrote to memory of 896	1100	account.exe	30
PID 1100 wrote to memory of 896	1100	account.exe	30
PID 1100 wrote to memory of 896	1100	account.exe	30
PID 1100 wrote to memory of 576	1100	account.exe	32
PID 1100 wrote to memory of 576	1100	account.exe	32
PID 1100 wrote to memory of 576	1100	account.exe	32
PID 1100 wrote to memory of 576	1100	account.exe	32
PID 1100 wrote to memory of 576	1100	account.exe	32
PID 1100 wrote to memory of 576	1100	account.exe	32
PID 1100 wrote to memory of 576	1100	account.exe	32
PID 1100 wrote to memory of 576	1100	account.exe	32
PID 1100 wrote to memory of 576	1100	account.exe	32
PID 576 wrote to memory of 1940	576	account.exe	33
PID 576 wrote to memory of 1940	576	account.exe	33
PID 576 wrote to memory of 1940	576	account.exe	33
PID 576 wrote to memory of 1940	576	account.exe	33
PID 576 wrote to memory of 1940	576	account.exe	33
PID 576 wrote to memory of 1940	576	account.exe	33
PID 576 wrote to memory of 1940	576	account.exe	33
PID 576 wrote to memory of 1940	576	account.exe	33
PID 576 wrote to memory of 1940	576	account.exe	33

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\account.exe
"C:\Users\Admin\AppData\Local\Temp\account.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1100
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QSBpOi.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1772
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QSBpOi" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD6EF.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:896
- C:\Users\Admin\AppData\Local\Temp\account.exe
  "C:\Users\Admin\AppData\Local\Temp\account.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:576
- - 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:1940

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\tmpD6EF.tmp

Filesize
1KB

MD5
0e63972fb480a302bc30600bb6970d99

SHA1
7963ff5dd7b258b1772788f396d6cf7a22779e39

SHA256
e30946c1968ed69662cb416e74e6a87f24ec3402173bcf75de4c39600f8b3285

SHA512
84c9cc0ed1481429c852a822be17da2169877a98471ef8afdbb2fa2c6d04a7b263340edf11cfbcccd7b398b6104e3de4e19780bffa5803663aeaa741edba770a

Download Submit
memory/576-64-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/576-88-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/576-86-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/576-72-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/576-69-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/576-67-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/576-65-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1100-56-0x0000000000490000-0x00000000004A8000-memory.dmp

Filesize
96KB

Download
memory/1100-54-0x0000000000FA0000-0x0000000001078000-memory.dmp

Filesize
864KB

Download
memory/1100-58-0x0000000005EE0000-0x0000000005F5E000-memory.dmp

Filesize
504KB

Download
memory/1100-57-0x0000000000470000-0x000000000047C000-memory.dmp

Filesize
48KB

Download
memory/1100-63-0x0000000000C30000-0x0000000000C58000-memory.dmp

Filesize
160KB

Download
memory/1100-55-0x00000000763F1000-0x00000000763F3000-memory.dmp

Filesize
8KB

Download
memory/1772-76-0x000000006ED40000-0x000000006F2EB000-memory.dmp

Filesize
5.7MB

Download
memory/1772-87-0x000000006ED40000-0x000000006F2EB000-memory.dmp

Filesize
5.7MB

Download
memory/1940-79-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1940-84-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1940-82-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1940-77-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads