blustealer | b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b

General

Target

b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe
Size

7KB
MD5

3e289cd67b5a4afaa3f1e63d6e895dca
SHA1

de4c2cc67f1144d4b161c93c2780312be01d93b7
SHA256

b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b
SHA512

cadd382ab3b596b0ffc1abc2ebd9cce5c359df3add81c2cc1209aa7794bfc78fea56c0cbe0da38f5c6a69edee05ec962d820a9b29a1973a01fa3163f6813e7e8
SSDEEP

96:Dc0/EaWpJR+RND5BAh0lfRCpRNjZUnxRBqAxzNt:D1EaWV+RNjM0lkTlUxRBhT

Score

10^/10

blustealer stormkitty collection persistence 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 1 IoCs

resource	yara_rule
behavioral1/memory/2732-156-0x0000000000B50000-0x0000000000B6A000-memory.dmp	family_stormkitty

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rbxlw = "\"C:\\Users\\Admin\\AppData\\Roaming\\Bjyfkg\\Rbxlw.exe\""	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.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
27	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2128 set thread context of 4852	2128	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe	88
PID 4852 set thread context of 2732	4852	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe	89

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 behavior: EnumeratesProcesses 2 IoCs

pid	Process
1472	powershell.exe
1472	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4852	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2128	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe
Token: SeDebugPrivilege	1472	powershell.exe
Token: SeDebugPrivilege	2732	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4852	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 1472	2128	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe	83
PID 2128 wrote to memory of 1472	2128	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe	83
PID 2128 wrote to memory of 1472	2128	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe	83
PID 2128 wrote to memory of 4852	2128	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe	88
PID 2128 wrote to memory of 4852	2128	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe	88
PID 2128 wrote to memory of 4852	2128	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe	88
PID 2128 wrote to memory of 4852	2128	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe	88
PID 2128 wrote to memory of 4852	2128	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe	88
PID 2128 wrote to memory of 4852	2128	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe	88
PID 2128 wrote to memory of 4852	2128	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe	88
PID 2128 wrote to memory of 4852	2128	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe	88
PID 4852 wrote to memory of 2732	4852	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe	89
PID 4852 wrote to memory of 2732	4852	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe	89
PID 4852 wrote to memory of 2732	4852	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe	89
PID 4852 wrote to memory of 2732	4852	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe	89
PID 4852 wrote to memory of 2732	4852	b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe	89

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe
"C:\Users\Admin\AppData\Local\Temp\b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1472
- C:\Users\Admin\AppData\Local\Temp\b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe
  C:\Users\Admin\AppData\Local\Temp\b0cda6b337ec6eb6b4cf853e278fd6cd8bff9bf1cc6291cbdafef3f901af893b.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4852
- - 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:2732

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1472-145-0x0000000005E80000-0x0000000005E9E000-memory.dmp

Filesize
120KB

Download
memory/1472-143-0x0000000005690000-0x00000000056F6000-memory.dmp

Filesize
408KB

Download
memory/1472-144-0x0000000005850000-0x00000000058B6000-memory.dmp

Filesize
408KB

Download
memory/1472-147-0x0000000006360000-0x000000000637A000-memory.dmp

Filesize
104KB

Download
memory/1472-146-0x00000000074D0000-0x0000000007B4A000-memory.dmp

Filesize
6.5MB

Download
memory/1472-141-0x00000000048F0000-0x0000000004926000-memory.dmp

Filesize
216KB

Download
memory/1472-142-0x0000000004F60000-0x0000000005588000-memory.dmp

Filesize
6.2MB

Download
memory/2128-139-0x0000000007360000-0x0000000007382000-memory.dmp

Filesize
136KB

Download
memory/2128-135-0x0000000000F70000-0x0000000000F78000-memory.dmp

Filesize
32KB

Download
memory/2128-137-0x0000000005950000-0x00000000059E2000-memory.dmp

Filesize
584KB

Download
memory/2128-136-0x0000000006050000-0x00000000065F4000-memory.dmp

Filesize
5.6MB

Download
memory/2128-138-0x0000000005A10000-0x0000000005A1A000-memory.dmp

Filesize
40KB

Download
memory/2732-156-0x0000000000B50000-0x0000000000B6A000-memory.dmp

Filesize
104KB

Download
memory/2732-157-0x0000000005930000-0x00000000059CC000-memory.dmp

Filesize
624KB

Download
memory/4852-149-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/4852-151-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/4852-154-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/4852-158-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads