blustealer | 45035676e4441c255385a1436d86540859459f5b1f3105e7a21bc9c07057276c

General

Target

Invoice no. 004.exe
Size

626KB
MD5

5500eeff820e3f9518f14ac32df4e735
SHA1

25af6b1565154eac95865b9db7944b9bbc842493
SHA256

45035676e4441c255385a1436d86540859459f5b1f3105e7a21bc9c07057276c
SHA512

79579fbacb4d138e39b73ccdc0a0dcc5683c7abe55691ca8f35e8c55001fd9d801122b5b9b8a5e5e64fef1e4a6508fd1bf84547bb09cc37a1c9fa6787bb2edef

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 1 IoCs

resource	yara_rule
behavioral2/memory/3444-151-0x0000000000760000-0x000000000077A000-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-1-5-21-2372564722-193526734-2636556182-1000\Control Panel\International\Geo\Nation	Invoice no. 004.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\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
26	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4248 set thread context of 4856	4248	Invoice no. 004.exe	89
PID 4856 set thread context of 3444	4856	Invoice no. 004.exe	90

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
3408	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4248	Invoice no. 004.exe
4248	Invoice no. 004.exe
4248	Invoice no. 004.exe
4248	Invoice no. 004.exe
4248	Invoice no. 004.exe
4248	Invoice no. 004.exe
4248	Invoice no. 004.exe
4924	powershell.exe
4924	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4248	Invoice no. 004.exe
Token: SeDebugPrivilege	4924	powershell.exe
Token: SeDebugPrivilege	3444	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4856	Invoice no. 004.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4248 wrote to memory of 4924	4248	Invoice no. 004.exe	85
PID 4248 wrote to memory of 4924	4248	Invoice no. 004.exe	85
PID 4248 wrote to memory of 4924	4248	Invoice no. 004.exe	85
PID 4248 wrote to memory of 3408	4248	Invoice no. 004.exe	87
PID 4248 wrote to memory of 3408	4248	Invoice no. 004.exe	87
PID 4248 wrote to memory of 3408	4248	Invoice no. 004.exe	87
PID 4248 wrote to memory of 4856	4248	Invoice no. 004.exe	89
PID 4248 wrote to memory of 4856	4248	Invoice no. 004.exe	89
PID 4248 wrote to memory of 4856	4248	Invoice no. 004.exe	89
PID 4248 wrote to memory of 4856	4248	Invoice no. 004.exe	89
PID 4248 wrote to memory of 4856	4248	Invoice no. 004.exe	89
PID 4248 wrote to memory of 4856	4248	Invoice no. 004.exe	89
PID 4248 wrote to memory of 4856	4248	Invoice no. 004.exe	89
PID 4248 wrote to memory of 4856	4248	Invoice no. 004.exe	89
PID 4856 wrote to memory of 3444	4856	Invoice no. 004.exe	90
PID 4856 wrote to memory of 3444	4856	Invoice no. 004.exe	90
PID 4856 wrote to memory of 3444	4856	Invoice no. 004.exe	90
PID 4856 wrote to memory of 3444	4856	Invoice no. 004.exe	90
PID 4856 wrote to memory of 3444	4856	Invoice no. 004.exe	90

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Invoice no. 004.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice no. 004.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4248
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\hpUATicOQr.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4924
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hpUATicOQr" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7F80.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3408
- C:\Users\Admin\AppData\Local\Temp\Invoice no. 004.exe
  "C:\Users\Admin\AppData\Local\Temp\Invoice no. 004.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4856
- - 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:3444

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

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp7F80.tmp

Filesize
1KB

MD5
449dfa4378c0b010efac690d4a743773

SHA1
8ae609a23be19190e1a67b229f047d87ac571359

SHA256
62270a5f1df75c1f41fb7b8aaeb0c033daf517c012af004de2ce4cdaf4544488

SHA512
117bb9455ed5f96d8c94f8d0ee10b2a6259d22c2555c037e4c03372688539a64cc43dba00fb06a5e2c888f89b643766b1e1ed4df9935ccc52d462b4dbacb43c4

Download Submit
memory/3444-151-0x0000000000760000-0x000000000077A000-memory.dmp

Filesize
104KB

Download
memory/4248-130-0x0000000000260000-0x0000000000304000-memory.dmp

Filesize
656KB

Download
memory/4248-131-0x0000000005210000-0x00000000057B4000-memory.dmp

Filesize
5.6MB

Download
memory/4248-132-0x0000000004D00000-0x0000000004D92000-memory.dmp

Filesize
584KB

Download
memory/4248-133-0x0000000004CF0000-0x0000000004CFA000-memory.dmp

Filesize
40KB

Download
memory/4248-134-0x0000000006E40000-0x0000000006EDC000-memory.dmp

Filesize
624KB

Download
memory/4248-135-0x0000000000B40000-0x0000000000BA6000-memory.dmp

Filesize
408KB

Download
memory/4856-146-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4856-152-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4856-163-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4856-142-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4924-154-0x0000000070600000-0x000000007064C000-memory.dmp

Filesize
304KB

Download
memory/4924-155-0x0000000006F20000-0x0000000006F3E000-memory.dmp

Filesize
120KB

Download
memory/4924-138-0x0000000003050000-0x0000000003086000-memory.dmp

Filesize
216KB

Download
memory/4924-145-0x0000000005950000-0x00000000059B6000-memory.dmp

Filesize
408KB

Download
memory/4924-153-0x0000000006F40000-0x0000000006F72000-memory.dmp

Filesize
200KB

Download
memory/4924-140-0x0000000005B90000-0x00000000061B8000-memory.dmp

Filesize
6.2MB

Download
memory/4924-149-0x0000000006980000-0x000000000699E000-memory.dmp

Filesize
120KB

Download
memory/4924-156-0x00000000082D0000-0x000000000894A000-memory.dmp

Filesize
6.5MB

Download
memory/4924-157-0x0000000007C80000-0x0000000007C9A000-memory.dmp

Filesize
104KB

Download
memory/4924-158-0x0000000007CF0000-0x0000000007CFA000-memory.dmp

Filesize
40KB

Download
memory/4924-159-0x0000000007F00000-0x0000000007F96000-memory.dmp

Filesize
600KB

Download
memory/4924-160-0x0000000007EB0000-0x0000000007EBE000-memory.dmp

Filesize
56KB

Download
memory/4924-161-0x0000000007FC0000-0x0000000007FDA000-memory.dmp

Filesize
104KB

Download
memory/4924-162-0x0000000007FA0000-0x0000000007FA8000-memory.dmp

Filesize
32KB

Download
memory/4924-144-0x00000000058B0000-0x00000000058D2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads