blustealer | ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc

General

Target

ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc.exe
Size

881KB
MD5

4b28d8e218f5dfe20541b32fca297074
SHA1

a5b715011f2bd3229e3acf3d88131a61043eba1a
SHA256

ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc
SHA512

04fac1bf2cb45ea967ddf9e5cf34fc1582b094fd0d0423ba6f56e889fb9e58b6b85f848201855446f540de19b8665fef1bc5d5f07face17955682cbcad4707ac
SSDEEP

12288:rMXcyHcfKPLcYdXQawrPI2F2QVokACzkRj8U8oxfEunphMnX:QNcfMLciXQlrR2QukACgRHM

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5576673774:AAF__hFRh9bcJV72HkFb-9eZR9JNNyuOmFM/sendMessage?chat_id=1194722650

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 1 IoCs

resource	yara_rule
behavioral1/memory/4236-145-0x0000000000370000-0x000000000038A000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\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
46	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1540 set thread context of 4504	1540	ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc.exe	92
PID 4504 set thread context of 4236	4504	ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc.exe	93

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 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4236	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4504	ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1540 wrote to memory of 4504	1540	ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc.exe	92
PID 1540 wrote to memory of 4504	1540	ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc.exe	92
PID 1540 wrote to memory of 4504	1540	ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc.exe	92
PID 1540 wrote to memory of 4504	1540	ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc.exe	92
PID 1540 wrote to memory of 4504	1540	ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc.exe	92
PID 1540 wrote to memory of 4504	1540	ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc.exe	92
PID 1540 wrote to memory of 4504	1540	ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc.exe	92
PID 1540 wrote to memory of 4504	1540	ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc.exe	92
PID 4504 wrote to memory of 4236	4504	ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc.exe	93
PID 4504 wrote to memory of 4236	4504	ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc.exe	93
PID 4504 wrote to memory of 4236	4504	ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc.exe	93
PID 4504 wrote to memory of 4236	4504	ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc.exe	93
PID 4504 wrote to memory of 4236	4504	ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc.exe	93

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc.exe
"C:\Users\Admin\AppData\Local\Temp\ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1540
- C:\Users\Admin\AppData\Local\Temp\ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc.exe
  "C:\Users\Admin\AppData\Local\Temp\ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4504
- - 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:4236

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

memory/1540-132-0x0000000000A80000-0x0000000000B62000-memory.dmp

Filesize
904KB

Download
memory/1540-133-0x0000000005BF0000-0x0000000006194000-memory.dmp

Filesize
5.6MB

Download
memory/1540-134-0x0000000005530000-0x00000000055C2000-memory.dmp

Filesize
584KB

Download
memory/1540-135-0x0000000005520000-0x000000000552A000-memory.dmp

Filesize
40KB

Download
memory/1540-136-0x000000000BB30000-0x000000000BBCC000-memory.dmp

Filesize
624KB

Download
memory/1540-137-0x00000000014A0000-0x0000000001506000-memory.dmp

Filesize
408KB

Download
memory/4236-145-0x0000000000370000-0x000000000038A000-memory.dmp

Filesize
104KB

Download
memory/4504-139-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4504-141-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4504-146-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download

Analysis

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