blustealer | 5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977

General

Target

5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977.exe
Size

125KB
MD5

88eeeb298fabd21ef29c0b89d7aee4f9
SHA1

6ceb6efa6b16293c8ab278d9f4276ad9af1ca653
SHA256

5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977
SHA512

0ac2637718ca22b7ee102360fd324761b24e13c991615f93c7f6f8ede72474a372f3f664fac5bd72d04d4977c388d401c3bcaf6d78e655e31eba2b6a4b4b1547
SSDEEP

1536:A/w/Zws3kTnvzbhNBPmxue2SRQg0dkEwiqoVioZkcOqJ40eZgYAv:A0ZTkLfhjFSiO3o3kcqZZG

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5369570306:AAGakouymXOc8dp0WUuP_KaS81h9taRj_pk/sendMessage?chat_id=1884866272

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 3 IoCs

resource	yara_rule
behavioral1/memory/1436-58-0x00000000000D0000-0x00000000000EA000-memory.dmp	family_stormkitty
behavioral1/memory/1436-60-0x00000000000D0000-0x00000000000EA000-memory.dmp	family_stormkitty
behavioral1/memory/1436-62-0x00000000000D0000-0x00000000000EA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\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
3	icanhazip.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1480 set thread context of 1436	1480	5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977.exe	27

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	1436	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1480	5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1480 wrote to memory of 1436	1480	5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977.exe	27
PID 1480 wrote to memory of 1436	1480	5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977.exe	27
PID 1480 wrote to memory of 1436	1480	5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977.exe	27
PID 1480 wrote to memory of 1436	1480	5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977.exe	27
PID 1480 wrote to memory of 1436	1480	5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977.exe	27
PID 1480 wrote to memory of 1436	1480	5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977.exe	27
PID 1480 wrote to memory of 1436	1480	5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977.exe	27
PID 1480 wrote to memory of 1436	1480	5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977.exe	27
PID 1480 wrote to memory of 1436	1480	5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977.exe	27

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977.exe
"C:\Users\Admin\AppData\Local\Temp\5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1480
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
  2⤵
  - Accesses Microsoft Outlook profiles
  - Checks processor information in registry
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1436

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/1436-56-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/1436-57-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1436-58-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/1436-60-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/1436-62-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/1436-64-0x0000000000FB0000-0x0000000000FF0000-memory.dmp

Filesize
256KB

Download
memory/1480-63-0x0000000000400000-0x00000000004219CC-memory.dmp

Filesize
134KB

Download
memory/1480-65-0x0000000000400000-0x00000000004219CC-memory.dmp

Filesize
134KB

Download

Analysis

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