blustealer | c770ddf80ec05a624d91aa9635b20dc5978a057847e1750135dc418e18ac24b6

General

Target

SecuriteInfo.com.Win32.PWSX-gen.21119.exe
Size

1.0MB
MD5

be87af43c49cccb661e14ffdbcd7009c
SHA1

d586ed55ac6135f2cd369a5ff904f0b55eb3bcf3
SHA256

c770ddf80ec05a624d91aa9635b20dc5978a057847e1750135dc418e18ac24b6
SHA512

b8105901d77c95d7f3770dc8a0181242d4bb434e6627368b7ef676ee5edbf5e290dc2832d04635487eb5a996e44023dad5bdd57978705aad686c9d4ce8432b16
SSDEEP

12288:gfb41hw4e/ehLrz20Ww07Y62PGyDQc1tjpqIjB0yVKSIP2iEMJCbV21hw4e/:SL4LJln070Rke9ukFAvENbVx4

Score

10^/10

blustealer stormkitty collection 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 4 IoCs

resource	yara_rule
behavioral1/memory/1112-74-0x00000000000D0000-0x00000000000EA000-memory.dmp	family_stormkitty
behavioral1/memory/1112-75-0x00000000000E4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/1112-77-0x00000000000D0000-0x00000000000EA000-memory.dmp	family_stormkitty
behavioral1/memory/1112-79-0x00000000000D0000-0x00000000000EA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\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
4	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 364 set thread context of 984	364	SecuriteInfo.com.Win32.PWSX-gen.21119.exe	26
PID 984 set thread context of 1112	984	SecuriteInfo.com.Win32.PWSX-gen.21119.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	1112	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
984	SecuriteInfo.com.Win32.PWSX-gen.21119.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 364 wrote to memory of 984	364	SecuriteInfo.com.Win32.PWSX-gen.21119.exe	26
PID 364 wrote to memory of 984	364	SecuriteInfo.com.Win32.PWSX-gen.21119.exe	26
PID 364 wrote to memory of 984	364	SecuriteInfo.com.Win32.PWSX-gen.21119.exe	26
PID 364 wrote to memory of 984	364	SecuriteInfo.com.Win32.PWSX-gen.21119.exe	26
PID 364 wrote to memory of 984	364	SecuriteInfo.com.Win32.PWSX-gen.21119.exe	26
PID 364 wrote to memory of 984	364	SecuriteInfo.com.Win32.PWSX-gen.21119.exe	26
PID 364 wrote to memory of 984	364	SecuriteInfo.com.Win32.PWSX-gen.21119.exe	26
PID 364 wrote to memory of 984	364	SecuriteInfo.com.Win32.PWSX-gen.21119.exe	26
PID 364 wrote to memory of 984	364	SecuriteInfo.com.Win32.PWSX-gen.21119.exe	26
PID 984 wrote to memory of 1112	984	SecuriteInfo.com.Win32.PWSX-gen.21119.exe	27
PID 984 wrote to memory of 1112	984	SecuriteInfo.com.Win32.PWSX-gen.21119.exe	27
PID 984 wrote to memory of 1112	984	SecuriteInfo.com.Win32.PWSX-gen.21119.exe	27
PID 984 wrote to memory of 1112	984	SecuriteInfo.com.Win32.PWSX-gen.21119.exe	27
PID 984 wrote to memory of 1112	984	SecuriteInfo.com.Win32.PWSX-gen.21119.exe	27
PID 984 wrote to memory of 1112	984	SecuriteInfo.com.Win32.PWSX-gen.21119.exe	27
PID 984 wrote to memory of 1112	984	SecuriteInfo.com.Win32.PWSX-gen.21119.exe	27
PID 984 wrote to memory of 1112	984	SecuriteInfo.com.Win32.PWSX-gen.21119.exe	27
PID 984 wrote to memory of 1112	984	SecuriteInfo.com.Win32.PWSX-gen.21119.exe	27

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.21119.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.21119.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:364
- C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.21119.exe
  "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.21119.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:984
- - 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:1112

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/364-54-0x0000000000D90000-0x0000000000E9E000-memory.dmp

Filesize
1.1MB

Download
memory/364-55-0x0000000076681000-0x0000000076683000-memory.dmp

Filesize
8KB

Download
memory/364-56-0x0000000000380000-0x000000000039A000-memory.dmp

Filesize
104KB

Download
memory/364-57-0x0000000000740000-0x000000000074C000-memory.dmp

Filesize
48KB

Download
memory/364-58-0x0000000004BC0000-0x0000000004C42000-memory.dmp

Filesize
520KB

Download
memory/364-59-0x0000000000D60000-0x0000000000D8A000-memory.dmp

Filesize
168KB

Download
memory/984-63-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/984-61-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/984-60-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/984-65-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/984-68-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/984-81-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1112-72-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/1112-74-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/1112-77-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/1112-79-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download

Analysis

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