blustealer | 01c931d8ce67e3ac95f9f78ac811ec0dfcc59b068d13341c77bd6a677cd35a0a

General

Target

Shipping Doc.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 4 IoCs

resource	yara_rule
behavioral1/memory/572-72-0x00000000001D0000-0x00000000001EA000-memory.dmp	family_stormkitty
behavioral1/memory/572-73-0x00000000001E4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/572-75-0x00000000001D0000-0x00000000001EA000-memory.dmp	family_stormkitty
behavioral1/memory/572-77-0x00000000001D0000-0x00000000001EA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\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
5	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 860 set thread context of 1744	860	Shipping Doc.exe	27
PID 1744 set thread context of 572	1744	Shipping Doc.exe	28

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 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	860	Shipping Doc.exe
Token: SeDebugPrivilege	572	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1744	Shipping Doc.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 860 wrote to memory of 1744	860	Shipping Doc.exe	27
PID 860 wrote to memory of 1744	860	Shipping Doc.exe	27
PID 860 wrote to memory of 1744	860	Shipping Doc.exe	27
PID 860 wrote to memory of 1744	860	Shipping Doc.exe	27
PID 860 wrote to memory of 1744	860	Shipping Doc.exe	27
PID 860 wrote to memory of 1744	860	Shipping Doc.exe	27
PID 860 wrote to memory of 1744	860	Shipping Doc.exe	27
PID 860 wrote to memory of 1744	860	Shipping Doc.exe	27
PID 860 wrote to memory of 1744	860	Shipping Doc.exe	27
PID 1744 wrote to memory of 572	1744	Shipping Doc.exe	28
PID 1744 wrote to memory of 572	1744	Shipping Doc.exe	28
PID 1744 wrote to memory of 572	1744	Shipping Doc.exe	28
PID 1744 wrote to memory of 572	1744	Shipping Doc.exe	28
PID 1744 wrote to memory of 572	1744	Shipping Doc.exe	28
PID 1744 wrote to memory of 572	1744	Shipping Doc.exe	28
PID 1744 wrote to memory of 572	1744	Shipping Doc.exe	28
PID 1744 wrote to memory of 572	1744	Shipping Doc.exe	28
PID 1744 wrote to memory of 572	1744	Shipping Doc.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Shipping Doc.exe
"C:\Users\Admin\AppData\Local\Temp\Shipping Doc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:860
- C:\Users\Admin\AppData\Local\Temp\Shipping Doc.exe
  "C:\Users\Admin\AppData\Local\Temp\Shipping Doc.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1744
- - 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:572

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

Loading Replay Monitor...

Downloads

memory/572-70-0x00000000001D0000-0x00000000001EA000-memory.dmp

Filesize
104KB

Download
memory/572-77-0x00000000001D0000-0x00000000001EA000-memory.dmp

Filesize
104KB

Download
memory/572-75-0x00000000001D0000-0x00000000001EA000-memory.dmp

Filesize
104KB

Download
memory/572-72-0x00000000001D0000-0x00000000001EA000-memory.dmp

Filesize
104KB

Download
memory/860-55-0x0000000074DE1000-0x0000000074DE3000-memory.dmp

Filesize
8KB

Download
memory/860-56-0x00000000054C0000-0x00000000055AE000-memory.dmp

Filesize
952KB

Download
memory/860-57-0x0000000004CF0000-0x0000000004D82000-memory.dmp

Filesize
584KB

Download
memory/860-54-0x00000000008C0000-0x00000000008CC000-memory.dmp

Filesize
48KB

Download
memory/1744-58-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1744-66-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1744-63-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1744-61-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1744-59-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1744-79-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1744-80-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing