blustealer | 28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5

General

Target

28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5.exe
Size

856KB
MD5

e3c3961c460143a9ecf527e1821b89cc
SHA1

db1b4f8b3383eee78296cc69d3d101a2a23012ca
SHA256

28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5
SHA512

a439568155ebf0e85eee3104fe98e9001141f8a8e5178b7e011c5c24554b8eb8f2a734c60b68bea05bf9170fa3001a081a93233de2d2f5414e1b1f4e607c59c9
SSDEEP

12288:yPLQR/4veFNM4rKd3zIEEqBSP3JJxP7xINKJhJf3wZh:g+4vevrXH7P3vxP7xINOP

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5374342837:AAHF-c1HAIvNCdF89VuEdNggsL2YBlpgkSE/sendMessage?chat_id=2133303215

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
behavioral2/memory/2428-145-0x0000000000BE0000-0x0000000000BFA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\15.0\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
42	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4740 set thread context of 1224	4740	28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5.exe	91
PID 1224 set thread context of 2428	1224	28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5.exe	92

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	2428	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1224	28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4740 wrote to memory of 1224	4740	28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5.exe	91
PID 4740 wrote to memory of 1224	4740	28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5.exe	91
PID 4740 wrote to memory of 1224	4740	28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5.exe	91
PID 4740 wrote to memory of 1224	4740	28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5.exe	91
PID 4740 wrote to memory of 1224	4740	28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5.exe	91
PID 4740 wrote to memory of 1224	4740	28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5.exe	91
PID 4740 wrote to memory of 1224	4740	28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5.exe	91
PID 4740 wrote to memory of 1224	4740	28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5.exe	91
PID 1224 wrote to memory of 2428	1224	28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5.exe	92
PID 1224 wrote to memory of 2428	1224	28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5.exe	92
PID 1224 wrote to memory of 2428	1224	28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5.exe	92
PID 1224 wrote to memory of 2428	1224	28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5.exe	92
PID 1224 wrote to memory of 2428	1224	28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5.exe	92

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5.exe
"C:\Users\Admin\AppData\Local\Temp\28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4740
- C:\Users\Admin\AppData\Local\Temp\28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5.exe
  "C:\Users\Admin\AppData\Local\Temp\28be1b525319b02993d31a3d45330e8924f40b4ebeb8696a89bcd3333bea26d5.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1224
- - 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:2428

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

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Downloads

memory/1224-147-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1224-146-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1224-141-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1224-139-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2428-145-0x0000000000BE0000-0x0000000000BFA000-memory.dmp

Filesize
104KB

Download
memory/4740-137-0x00000000014C0000-0x0000000001526000-memory.dmp

Filesize
408KB

Download
memory/4740-136-0x00000000091A0000-0x000000000923C000-memory.dmp

Filesize
624KB

Download
memory/4740-135-0x0000000005990000-0x000000000599A000-memory.dmp

Filesize
40KB

Download
memory/4740-132-0x0000000000AE0000-0x0000000000BB6000-memory.dmp

Filesize
856KB

Download
memory/4740-134-0x00000000055D0000-0x0000000005662000-memory.dmp

Filesize
584KB

Download
memory/4740-133-0x0000000005B80000-0x0000000006124000-memory.dmp

Filesize
5.6MB

Download

Analysis

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