blustealer | 97138fb6cc70e98a5560537f484c8c24d5f7b8a0aad837a41f03797ecaf74e15

General

Target

01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe
Size

21KB
MD5

4faf6ca4dae38767007b38e7c300d4f2
SHA1

fa8cb35eba4d4e9719dddb30ddd3e00ebdccf69c
SHA256

01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a
SHA512

a971813d7d37286a8416cbd37c10c1b85dfb0fd1864a58994455facfa916b274fa1ed59f7692fab721b740ef133c691065503f66623f95f2f162774f30872206
SSDEEP

384:tBcgMSILxEUaNePqRpimmtIEQ6p5TKn8Svod2JzFlXYmnZzjcm:7hMFLxOzRphL6ju8SvoYym/

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/4876-142-0x00000000005D0000-0x00000000005EA000-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
10	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1716 set thread context of 4960	1716	01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe	83
PID 4960 set thread context of 4876	4960	01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe	84

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
1716	01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe
1716	01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1716	01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe
Token: SeDebugPrivilege	4876	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4960	01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1716 wrote to memory of 3092	1716	01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe	82
PID 1716 wrote to memory of 3092	1716	01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe	82
PID 1716 wrote to memory of 3092	1716	01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe	82
PID 1716 wrote to memory of 4960	1716	01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe	83
PID 1716 wrote to memory of 4960	1716	01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe	83
PID 1716 wrote to memory of 4960	1716	01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe	83
PID 1716 wrote to memory of 4960	1716	01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe	83
PID 1716 wrote to memory of 4960	1716	01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe	83
PID 1716 wrote to memory of 4960	1716	01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe	83
PID 1716 wrote to memory of 4960	1716	01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe	83
PID 1716 wrote to memory of 4960	1716	01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe	83
PID 4960 wrote to memory of 4876	4960	01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe	84
PID 4960 wrote to memory of 4876	4960	01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe	84
PID 4960 wrote to memory of 4876	4960	01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe	84
PID 4960 wrote to memory of 4876	4960	01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe	84
PID 4960 wrote to memory of 4876	4960	01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe	84

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\01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe
"C:\Users\Admin\AppData\Local\Temp\01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1716
- C:\Users\Admin\AppData\Local\Temp\01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe
  C:\Users\Admin\AppData\Local\Temp\01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe
  2⤵
  PID:3092
- C:\Users\Admin\AppData\Local\Temp\01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe
  C:\Users\Admin\AppData\Local\Temp\01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4960
- - 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:4876

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/1716-132-0x00000000005F0000-0x00000000005FC000-memory.dmp

Filesize
48KB

Download
memory/1716-133-0x0000000005BE0000-0x0000000005C02000-memory.dmp

Filesize
136KB

Download
memory/4876-142-0x00000000005D0000-0x00000000005EA000-memory.dmp

Filesize
104KB

Download
memory/4876-143-0x0000000004E00000-0x0000000004E66000-memory.dmp

Filesize
408KB

Download
memory/4876-145-0x00000000056D0000-0x000000000576C000-memory.dmp

Filesize
624KB

Download
memory/4960-136-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4960-138-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4960-144-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4960-146-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download

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Analysis

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