blustealer | 1e2429d09e5be15e508b698e1800ba6d3c961d577d49ec21282f5b2f100a971f

General

Target

Demurrage_INV.pdf.exe
Size

1.1MB
MD5

54eaae9681e7c7ae7dedfab196e2f5bb
SHA1

7c8ff9bf1fad84d2761a7afd951a33ac752d0fe2
SHA256

1e2429d09e5be15e508b698e1800ba6d3c961d577d49ec21282f5b2f100a971f
SHA512

3b64610fa0f5d537aa17b95a78107975b0854478ef91571cde1d367a7b903d340ef1e6ad63b13664d343895443df052a762bf349238719b5ceee3228a42d2c83
SSDEEP

12288:1BUaDvrv6xqVb6RMQhgTvv7RrDIJyPuc2claJKlll6gmsASYe4lbxKcXLnMYv9W:1TDvrvOqbl5NOwJ2cl9lllJYv

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5472661190:AAH0_Es3-7EvHKo3diARLmBSPyMQ64sYLC8/sendMessage?chat_id=1148000519

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/1664-78-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1664-79-0x00000000000A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/1664-81-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1664-83-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\16.0\Outlook\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 1960 set thread context of 1984	1960	Demurrage_INV.pdf.exe	32
PID 1984 set thread context of 1664	1984	Demurrage_INV.pdf.exe	33

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

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1588	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1960	Demurrage_INV.pdf.exe
1960	Demurrage_INV.pdf.exe
1960	Demurrage_INV.pdf.exe
1960	Demurrage_INV.pdf.exe
1960	Demurrage_INV.pdf.exe
1960	Demurrage_INV.pdf.exe
1336	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1960	Demurrage_INV.pdf.exe
Token: SeDebugPrivilege	1336	powershell.exe
Token: SeDebugPrivilege	1664	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1984	Demurrage_INV.pdf.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1960 wrote to memory of 1336	1960	Demurrage_INV.pdf.exe	28
PID 1960 wrote to memory of 1336	1960	Demurrage_INV.pdf.exe	28
PID 1960 wrote to memory of 1336	1960	Demurrage_INV.pdf.exe	28
PID 1960 wrote to memory of 1336	1960	Demurrage_INV.pdf.exe	28
PID 1960 wrote to memory of 1588	1960	Demurrage_INV.pdf.exe	30
PID 1960 wrote to memory of 1588	1960	Demurrage_INV.pdf.exe	30
PID 1960 wrote to memory of 1588	1960	Demurrage_INV.pdf.exe	30
PID 1960 wrote to memory of 1588	1960	Demurrage_INV.pdf.exe	30
PID 1960 wrote to memory of 1984	1960	Demurrage_INV.pdf.exe	32
PID 1960 wrote to memory of 1984	1960	Demurrage_INV.pdf.exe	32
PID 1960 wrote to memory of 1984	1960	Demurrage_INV.pdf.exe	32
PID 1960 wrote to memory of 1984	1960	Demurrage_INV.pdf.exe	32
PID 1960 wrote to memory of 1984	1960	Demurrage_INV.pdf.exe	32
PID 1960 wrote to memory of 1984	1960	Demurrage_INV.pdf.exe	32
PID 1960 wrote to memory of 1984	1960	Demurrage_INV.pdf.exe	32
PID 1960 wrote to memory of 1984	1960	Demurrage_INV.pdf.exe	32
PID 1960 wrote to memory of 1984	1960	Demurrage_INV.pdf.exe	32
PID 1984 wrote to memory of 1664	1984	Demurrage_INV.pdf.exe	33
PID 1984 wrote to memory of 1664	1984	Demurrage_INV.pdf.exe	33
PID 1984 wrote to memory of 1664	1984	Demurrage_INV.pdf.exe	33
PID 1984 wrote to memory of 1664	1984	Demurrage_INV.pdf.exe	33
PID 1984 wrote to memory of 1664	1984	Demurrage_INV.pdf.exe	33
PID 1984 wrote to memory of 1664	1984	Demurrage_INV.pdf.exe	33
PID 1984 wrote to memory of 1664	1984	Demurrage_INV.pdf.exe	33
PID 1984 wrote to memory of 1664	1984	Demurrage_INV.pdf.exe	33
PID 1984 wrote to memory of 1664	1984	Demurrage_INV.pdf.exe	33

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Demurrage_INV.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Demurrage_INV.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1960
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YaomLY.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1336
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YaomLY" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE14B.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1588
- C:\Users\Admin\AppData\Local\Temp\Demurrage_INV.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Demurrage_INV.pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1984
- - 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:1664

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpE14B.tmp

Filesize
1KB

MD5
a5b9549892fbdaed6586265bb405171b

SHA1
db85884bc192fc27a25860984cd41f69a0d5e066

SHA256
b9714257e922e9776db9eec8f8117c83dfed14ba762a9b8eab3e447f854dd3f6

SHA512
43e3f0efcc555a819980bd8f5a615df256974fae777c8ec19b0309d932df2192943a6d21e75877a16e8a87a3646339fe155418875bf872eec50e02df1443f632

Download Submit
memory/1336-87-0x000000006E7B0000-0x000000006ED5B000-memory.dmp

Filesize
5.7MB

Download
memory/1336-86-0x000000006E7B0000-0x000000006ED5B000-memory.dmp

Filesize
5.7MB

Download
memory/1664-81-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1664-78-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1664-83-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1664-76-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1960-57-0x00000000005D0000-0x00000000005DC000-memory.dmp

Filesize
48KB

Download
memory/1960-63-0x0000000007460000-0x0000000007488000-memory.dmp

Filesize
160KB

Download
memory/1960-55-0x00000000751A1000-0x00000000751A3000-memory.dmp

Filesize
8KB

Download
memory/1960-58-0x000000000A320000-0x000000000A39E000-memory.dmp

Filesize
504KB

Download
memory/1960-56-0x0000000000440000-0x000000000045A000-memory.dmp

Filesize
104KB

Download
memory/1960-54-0x00000000008D0000-0x00000000009EA000-memory.dmp

Filesize
1.1MB

Download
memory/1984-65-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1984-72-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1984-69-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1984-85-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1984-67-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1984-64-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1984-88-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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