blustealer | 1b756d9f63963c6272fa1873b1e5d25e569201c44f09f83b103b8ff2f99eb443

General

Target

SecuriteInfo.com.Variant.Strictor.275243.4783.12617.exe
Size

158KB
MD5

8c63ee48a3ee135f8a24ba6dbc960d38
SHA1

cc3a3b766ebbd81f56c759bc0363d12c7c7df92f
SHA256

1b756d9f63963c6272fa1873b1e5d25e569201c44f09f83b103b8ff2f99eb443
SHA512

d8a6c697a51afed0303216b1ca8ff191b67c48e3254ffc317b049704862cff48071b8b192a79ed5065ac5b0ead29304cb797b508182afa9bf7dd381c4a161727
SSDEEP

3072:D0f6jMeqPqyow7Wje/6pNZuq8AdKsBPDwbMsykRRjEMSeQ0tyvBHMc:D0UWejzuqIsebMsFXsBMc

Score

10^/10

blustealer stormkitty collection spyware 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
behavioral2/memory/4152-142-0x0000000000E00000-0x0000000000E1A000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081

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
38	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 5084 set thread context of 4520	5084	SecuriteInfo.com.Variant.Strictor.275243.4783.12617.exe	90
PID 4520 set thread context of 4152	4520	cvtres.exe	91

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
5084	SecuriteInfo.com.Variant.Strictor.275243.4783.12617.exe
5084	SecuriteInfo.com.Variant.Strictor.275243.4783.12617.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5084	SecuriteInfo.com.Variant.Strictor.275243.4783.12617.exe
Token: SeDebugPrivilege	4152	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4520	cvtres.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 5084 wrote to memory of 4692	5084	SecuriteInfo.com.Variant.Strictor.275243.4783.12617.exe	89
PID 5084 wrote to memory of 4692	5084	SecuriteInfo.com.Variant.Strictor.275243.4783.12617.exe	89
PID 5084 wrote to memory of 4692	5084	SecuriteInfo.com.Variant.Strictor.275243.4783.12617.exe	89
PID 5084 wrote to memory of 4520	5084	SecuriteInfo.com.Variant.Strictor.275243.4783.12617.exe	90
PID 5084 wrote to memory of 4520	5084	SecuriteInfo.com.Variant.Strictor.275243.4783.12617.exe	90
PID 5084 wrote to memory of 4520	5084	SecuriteInfo.com.Variant.Strictor.275243.4783.12617.exe	90
PID 5084 wrote to memory of 4520	5084	SecuriteInfo.com.Variant.Strictor.275243.4783.12617.exe	90
PID 5084 wrote to memory of 4520	5084	SecuriteInfo.com.Variant.Strictor.275243.4783.12617.exe	90
PID 5084 wrote to memory of 4520	5084	SecuriteInfo.com.Variant.Strictor.275243.4783.12617.exe	90
PID 5084 wrote to memory of 4520	5084	SecuriteInfo.com.Variant.Strictor.275243.4783.12617.exe	90
PID 5084 wrote to memory of 4520	5084	SecuriteInfo.com.Variant.Strictor.275243.4783.12617.exe	90
PID 4520 wrote to memory of 4152	4520	cvtres.exe	91
PID 4520 wrote to memory of 4152	4520	cvtres.exe	91
PID 4520 wrote to memory of 4152	4520	cvtres.exe	91
PID 4520 wrote to memory of 4152	4520	cvtres.exe	91
PID 4520 wrote to memory of 4152	4520	cvtres.exe	91

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Strictor.275243.4783.12617.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Strictor.275243.4783.12617.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5084
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
  2⤵
  PID:4692
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4520
- - 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:4152

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4152-142-0x0000000000E00000-0x0000000000E1A000-memory.dmp

Filesize
104KB

Download
memory/4152-143-0x0000000005280000-0x00000000052E6000-memory.dmp

Filesize
408KB

Download
memory/4152-144-0x0000000005C20000-0x0000000005CBC000-memory.dmp

Filesize
624KB

Download
memory/4520-135-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4520-137-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4520-140-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4520-145-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/5084-132-0x00000000004D0000-0x00000000004FC000-memory.dmp

Filesize
176KB

Download

Analysis

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