blustealer | 5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977

Analysis

max time kernel
150s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
06-03-2023 14:01

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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

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 1 IoCs

resource	yara_rule
behavioral2/memory/264-136-0x0000000000D50000-0x0000000000D6A000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\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
30	icanhazip.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1428 set thread context of 264	1428	5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977.exe	87

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	264	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1428	5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1428 wrote to memory of 264	1428	5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977.exe	87
PID 1428 wrote to memory of 264	1428	5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977.exe	87
PID 1428 wrote to memory of 264	1428	5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977.exe	87
PID 1428 wrote to memory of 264	1428	5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977.exe	87
PID 1428 wrote to memory of 264	1428	5d81fbfb555468e8dbcaf4eb11db5eb50a0bef70df7e8322a84fac5d6cb88977.exe	87

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\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:1428
- 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:264

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/264-136-0x0000000000D50000-0x0000000000D6A000-memory.dmp

Filesize
104KB

Download
memory/264-137-0x0000000005310000-0x0000000005376000-memory.dmp

Filesize
408KB

Download
memory/264-138-0x0000000005BA0000-0x0000000005C3C000-memory.dmp

Filesize
624KB

Download
memory/264-139-0x0000000005490000-0x00000000054A0000-memory.dmp

Filesize
64KB

Download
memory/1428-135-0x0000000000400000-0x00000000004219CC-memory.dmp

Filesize
134KB

Download
memory/1428-141-0x0000000000400000-0x00000000004219CC-memory.dmp

Filesize
134KB

Download