blustealer | 4e42c439ab93674f0116c32953d7aeb1f89a38935ded452ef4a642fae32fdf98

General

Target

818a637e160bfbf0f1ba621112396c7feac8c395afbd94ea2f19d3c43c00c57b.exe
Size

25KB
MD5

9f43248187fe6f832efbc39ef5479a19
SHA1

f14868a26a528cb59ff1ef197345a0c326c8bc73
SHA256

818a637e160bfbf0f1ba621112396c7feac8c395afbd94ea2f19d3c43c00c57b
SHA512

ef5d917809d33d0246de23a452c21ddbb79c12d9d42be3f0b045d71160e40397756b5c3f418a40c5cdefc435024964c8c1f02d5284dd7ccfa3e8f26cfd769ca0
SSDEEP

192:GDBxon7JSbJooopoymOFzxqUdnqX3K6/sHn3SUNZfIZlBze3u8hHQaI+:yBCU2mqzMUdnqXaoUXfQBSra

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
behavioral3/memory/4372-150-0x0000000000970000-0x000000000098A000-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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	818a637e160bfbf0f1ba621112396c7feac8c395afbd94ea2f19d3c43c00c57b.exe

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

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-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Ijjrl = "\"C:\\Users\\Admin\\AppData\\Roaming\\Ofnhsnmn\\Ijjrl.exe\""	818a637e160bfbf0f1ba621112396c7feac8c395afbd94ea2f19d3c43c00c57b.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
44	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2180 set thread context of 3840	2180	818a637e160bfbf0f1ba621112396c7feac8c395afbd94ea2f19d3c43c00c57b.exe	93
PID 3840 set thread context of 4372	3840	RegAsm.exe	94

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 3 IoCs

pid	Process
2180	818a637e160bfbf0f1ba621112396c7feac8c395afbd94ea2f19d3c43c00c57b.exe
4848	powershell.exe
4848	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3840	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2180	818a637e160bfbf0f1ba621112396c7feac8c395afbd94ea2f19d3c43c00c57b.exe
Token: SeDebugPrivilege	4848	powershell.exe
Token: SeDebugPrivilege	4372	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3840	RegAsm.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2180 wrote to memory of 4848	2180	818a637e160bfbf0f1ba621112396c7feac8c395afbd94ea2f19d3c43c00c57b.exe	89
PID 2180 wrote to memory of 4848	2180	818a637e160bfbf0f1ba621112396c7feac8c395afbd94ea2f19d3c43c00c57b.exe	89
PID 2180 wrote to memory of 4848	2180	818a637e160bfbf0f1ba621112396c7feac8c395afbd94ea2f19d3c43c00c57b.exe	89
PID 2180 wrote to memory of 3840	2180	818a637e160bfbf0f1ba621112396c7feac8c395afbd94ea2f19d3c43c00c57b.exe	93
PID 2180 wrote to memory of 3840	2180	818a637e160bfbf0f1ba621112396c7feac8c395afbd94ea2f19d3c43c00c57b.exe	93
PID 2180 wrote to memory of 3840	2180	818a637e160bfbf0f1ba621112396c7feac8c395afbd94ea2f19d3c43c00c57b.exe	93
PID 2180 wrote to memory of 3840	2180	818a637e160bfbf0f1ba621112396c7feac8c395afbd94ea2f19d3c43c00c57b.exe	93
PID 2180 wrote to memory of 3840	2180	818a637e160bfbf0f1ba621112396c7feac8c395afbd94ea2f19d3c43c00c57b.exe	93
PID 2180 wrote to memory of 3840	2180	818a637e160bfbf0f1ba621112396c7feac8c395afbd94ea2f19d3c43c00c57b.exe	93
PID 2180 wrote to memory of 3840	2180	818a637e160bfbf0f1ba621112396c7feac8c395afbd94ea2f19d3c43c00c57b.exe	93
PID 2180 wrote to memory of 3840	2180	818a637e160bfbf0f1ba621112396c7feac8c395afbd94ea2f19d3c43c00c57b.exe	93
PID 3840 wrote to memory of 4372	3840	RegAsm.exe	94
PID 3840 wrote to memory of 4372	3840	RegAsm.exe	94
PID 3840 wrote to memory of 4372	3840	RegAsm.exe	94
PID 3840 wrote to memory of 4372	3840	RegAsm.exe	94
PID 3840 wrote to memory of 4372	3840	RegAsm.exe	94

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\818a637e160bfbf0f1ba621112396c7feac8c395afbd94ea2f19d3c43c00c57b.exe
"C:\Users\Admin\AppData\Local\Temp\818a637e160bfbf0f1ba621112396c7feac8c395afbd94ea2f19d3c43c00c57b.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2180
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4848
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3840
- - 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:4372

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

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Downloads

memory/2180-133-0x00000000062F0000-0x0000000006312000-memory.dmp

Filesize
136KB

Download
memory/2180-132-0x0000000000B10000-0x0000000000B1C000-memory.dmp

Filesize
48KB

Download
memory/3840-151-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3840-148-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3840-145-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3840-143-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/4372-152-0x0000000005A60000-0x0000000005AFC000-memory.dmp

Filesize
624KB

Download
memory/4372-150-0x0000000000970000-0x000000000098A000-memory.dmp

Filesize
104KB

Download
memory/4848-136-0x00000000054A0000-0x0000000005AC8000-memory.dmp

Filesize
6.2MB

Download
memory/4848-141-0x00000000065A0000-0x00000000065BA000-memory.dmp

Filesize
104KB

Download
memory/4848-140-0x00000000076A0000-0x0000000007D1A000-memory.dmp

Filesize
6.5MB

Download
memory/4848-139-0x0000000006080000-0x000000000609E000-memory.dmp

Filesize
120KB

Download
memory/4848-138-0x0000000005430000-0x0000000005496000-memory.dmp

Filesize
408KB

Download
memory/4848-137-0x0000000005250000-0x00000000052B6000-memory.dmp

Filesize
408KB

Download
memory/4848-135-0x0000000000EC0000-0x0000000000EF6000-memory.dmp

Filesize
216KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads