blustealer | b44fca03a737dabed36acbe2a42cac044fb33e5571a919c669926b1aba3f4150

General

Target

e-dekont.exe
Size

1.9MB
MD5

ada986026c468dd80925e205aa84a0ac
SHA1

d3e9594b6532a9c1aeb1790d51d4f4d11e6e62a9
SHA256

b44fca03a737dabed36acbe2a42cac044fb33e5571a919c669926b1aba3f4150
SHA512

8ccc8538ae07bef283cbf7ff0bfeecba552aa057330215f3f2533ada449c205ced2e1066be340a6df85d98327ff14a6242ffa5ec21ce9b4a2fa56ba67d05d4e3
SSDEEP

12288:tsK9j7OYmHvTvOJeA6iUitUG1dtKI67jEhuCqgpxAebAQGOYRqP2lU+5IwVK8vwo:/y6JeXGVvZhZYRqOl5Iu0FDRa5+7VO

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/952-74-0x00000000001A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/952-73-0x0000000000190000-0x00000000001AA000-memory.dmp	family_stormkitty
behavioral1/memory/952-76-0x0000000000190000-0x00000000001AA000-memory.dmp	family_stormkitty
behavioral1/memory/952-78-0x0000000000190000-0x00000000001AA000-memory.dmp	family_stormkitty

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\FcYbRRNH.lnk	e-dekont.exe

Loads dropped DLL 2 IoCs

pid	Process
1948	e-dekont.exe
1948	e-dekont.exe

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
5	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1948 set thread context of 1364	1948	e-dekont.exe	28
PID 1364 set thread context of 952	1364	e-dekont.exe	29

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 use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1948	e-dekont.exe
Token: SeDebugPrivilege	952	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1364	e-dekont.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1948 wrote to memory of 1364	1948	e-dekont.exe	28
PID 1948 wrote to memory of 1364	1948	e-dekont.exe	28
PID 1948 wrote to memory of 1364	1948	e-dekont.exe	28
PID 1948 wrote to memory of 1364	1948	e-dekont.exe	28
PID 1948 wrote to memory of 1364	1948	e-dekont.exe	28
PID 1948 wrote to memory of 1364	1948	e-dekont.exe	28
PID 1948 wrote to memory of 1364	1948	e-dekont.exe	28
PID 1948 wrote to memory of 1364	1948	e-dekont.exe	28
PID 1948 wrote to memory of 1364	1948	e-dekont.exe	28
PID 1364 wrote to memory of 952	1364	e-dekont.exe	29
PID 1364 wrote to memory of 952	1364	e-dekont.exe	29
PID 1364 wrote to memory of 952	1364	e-dekont.exe	29
PID 1364 wrote to memory of 952	1364	e-dekont.exe	29
PID 1364 wrote to memory of 952	1364	e-dekont.exe	29
PID 1364 wrote to memory of 952	1364	e-dekont.exe	29
PID 1364 wrote to memory of 952	1364	e-dekont.exe	29
PID 1364 wrote to memory of 952	1364	e-dekont.exe	29
PID 1364 wrote to memory of 952	1364	e-dekont.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\e-dekont.exe
"C:\Users\Admin\AppData\Local\Temp\e-dekont.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1948
- C:\Users\Admin\AppData\Local\Temp\e-dekont.exe
  "C:\Users\Admin\AppData\Local\Temp\e-dekont.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1364
- - 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:952

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

\Users\Admin\AppData\Roaming\InternalApplicationIdentit.dll

Filesize
670KB

MD5
c9652b395870659636dc088900ff4a1f

SHA1
8e13f8c8d79a2a895522ce849f330e48cf60b047

SHA256
4e1e636d7daf18d321aba24c57564b901affc12ddfe458622f93dc63740f1487

SHA512
2cc0d8eba90b80fac73a5bd375506a016ab731e110a1d07ad2fdce071b9d32c36769d8253fb217fa2a6e4da425e47e3d54c517b67880c11c2cfec3488320b53d

Download Submit
\Users\Admin\AppData\Roaming\InternalApplicationIdentit.dll

Filesize
670KB

MD5
c9652b395870659636dc088900ff4a1f

SHA1
8e13f8c8d79a2a895522ce849f330e48cf60b047

SHA256
4e1e636d7daf18d321aba24c57564b901affc12ddfe458622f93dc63740f1487

SHA512
2cc0d8eba90b80fac73a5bd375506a016ab731e110a1d07ad2fdce071b9d32c36769d8253fb217fa2a6e4da425e47e3d54c517b67880c11c2cfec3488320b53d

Download Submit
memory/952-71-0x0000000000190000-0x00000000001AA000-memory.dmp

Filesize
104KB

Download
memory/952-78-0x0000000000190000-0x00000000001AA000-memory.dmp

Filesize
104KB

Download
memory/952-76-0x0000000000190000-0x00000000001AA000-memory.dmp

Filesize
104KB

Download
memory/952-73-0x0000000000190000-0x00000000001AA000-memory.dmp

Filesize
104KB

Download
memory/1364-64-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1364-67-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1364-62-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1364-60-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1364-59-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1364-80-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1364-81-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1948-54-0x0000000000C50000-0x0000000000E40000-memory.dmp

Filesize
1.9MB

Download
memory/1948-58-0x0000000005240000-0x00000000052EE000-memory.dmp

Filesize
696KB

Download
memory/1948-55-0x0000000076031000-0x0000000076033000-memory.dmp

Filesize
8KB

Download

Analysis

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