blustealer | 02a1835ea805bb1a6ca8d1706fa5a811279ec3fcb1524eb83cfa60f0314cf0dd

General

Target

doc070902248304840384739-11983769230.exe
Size

1.0MB
MD5

82a1be67742da347df519c0c0b75ed87
SHA1

163e5d1758c7be66a6a3a35d2f9973d209383567
SHA256

02a1835ea805bb1a6ca8d1706fa5a811279ec3fcb1524eb83cfa60f0314cf0dd
SHA512

d2051aa0284e0ab9151417d05eafc037695c32d6bf67512b2c8155ecc303774bdc950c24a658fb88787c4f1c3f6ae8bb0bba2017d90129afcbf484f40baaa4a7
SSDEEP

12288:I5bIINzS9JAJgapke+yoaYRy6Wrq2vElGv9W:qbNzoJ0gakNy9cjWm2UGv

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/860-78-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/860-79-0x00000000000A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/860-81-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/860-83-0x0000000000090000-0x00000000000AA000-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\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
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

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 1972 set thread context of 1784	1972	doc070902248304840384739-11983769230.exe	32
PID 1784 set thread context of 860	1784	doc070902248304840384739-11983769230.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	AppLaunch.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	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
1396	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1972	doc070902248304840384739-11983769230.exe
1972	doc070902248304840384739-11983769230.exe
1972	doc070902248304840384739-11983769230.exe
1972	doc070902248304840384739-11983769230.exe
1972	doc070902248304840384739-11983769230.exe
1972	doc070902248304840384739-11983769230.exe
1764	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1784	doc070902248304840384739-11983769230.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1972	doc070902248304840384739-11983769230.exe
Token: SeDebugPrivilege	1764	powershell.exe
Token: SeDebugPrivilege	860	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1784	doc070902248304840384739-11983769230.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 1764	1972	doc070902248304840384739-11983769230.exe	28
PID 1972 wrote to memory of 1764	1972	doc070902248304840384739-11983769230.exe	28
PID 1972 wrote to memory of 1764	1972	doc070902248304840384739-11983769230.exe	28
PID 1972 wrote to memory of 1764	1972	doc070902248304840384739-11983769230.exe	28
PID 1972 wrote to memory of 1396	1972	doc070902248304840384739-11983769230.exe	30
PID 1972 wrote to memory of 1396	1972	doc070902248304840384739-11983769230.exe	30
PID 1972 wrote to memory of 1396	1972	doc070902248304840384739-11983769230.exe	30
PID 1972 wrote to memory of 1396	1972	doc070902248304840384739-11983769230.exe	30
PID 1972 wrote to memory of 1784	1972	doc070902248304840384739-11983769230.exe	32
PID 1972 wrote to memory of 1784	1972	doc070902248304840384739-11983769230.exe	32
PID 1972 wrote to memory of 1784	1972	doc070902248304840384739-11983769230.exe	32
PID 1972 wrote to memory of 1784	1972	doc070902248304840384739-11983769230.exe	32
PID 1972 wrote to memory of 1784	1972	doc070902248304840384739-11983769230.exe	32
PID 1972 wrote to memory of 1784	1972	doc070902248304840384739-11983769230.exe	32
PID 1972 wrote to memory of 1784	1972	doc070902248304840384739-11983769230.exe	32
PID 1972 wrote to memory of 1784	1972	doc070902248304840384739-11983769230.exe	32
PID 1972 wrote to memory of 1784	1972	doc070902248304840384739-11983769230.exe	32
PID 1784 wrote to memory of 860	1784	doc070902248304840384739-11983769230.exe	33
PID 1784 wrote to memory of 860	1784	doc070902248304840384739-11983769230.exe	33
PID 1784 wrote to memory of 860	1784	doc070902248304840384739-11983769230.exe	33
PID 1784 wrote to memory of 860	1784	doc070902248304840384739-11983769230.exe	33
PID 1784 wrote to memory of 860	1784	doc070902248304840384739-11983769230.exe	33
PID 1784 wrote to memory of 860	1784	doc070902248304840384739-11983769230.exe	33
PID 1784 wrote to memory of 860	1784	doc070902248304840384739-11983769230.exe	33
PID 1784 wrote to memory of 860	1784	doc070902248304840384739-11983769230.exe	33
PID 1784 wrote to memory of 860	1784	doc070902248304840384739-11983769230.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\doc070902248304840384739-11983769230.exe
"C:\Users\Admin\AppData\Local\Temp\doc070902248304840384739-11983769230.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1972
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\fjuIjtcpvLma.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1764
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fjuIjtcpvLma" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD818.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1396
- C:\Users\Admin\AppData\Local\Temp\doc070902248304840384739-11983769230.exe
  "C:\Users\Admin\AppData\Local\Temp\doc070902248304840384739-11983769230.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1784
- - 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:860

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\tmpD818.tmp

Filesize
1KB

MD5
0d69b519de6730983e7a2ffe468b5aba

SHA1
8b815a2abc4a0accbc494df71e7c4e7ecafb677c

SHA256
cd6ef0c744b9db3ed48251b484b4e211d0f541d5de8529d942c9e44992d98c66

SHA512
fc3b3b971f09f66fc43ef55458ca55effc36df94f67f101b0548f4b25f9d006bb8e1134c135eced45e23bed4a9a33cc70fa9bacacbc587c4765be207d54cafc2

Download Submit
memory/860-83-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/860-81-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/860-76-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/860-78-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1764-87-0x000000006E6F0000-0x000000006EC9B000-memory.dmp

Filesize
5.7MB

Download
memory/1764-85-0x000000006E6F0000-0x000000006EC9B000-memory.dmp

Filesize
5.7MB

Download
memory/1784-67-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1784-64-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1784-69-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1784-72-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1784-65-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1784-88-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1784-86-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1972-56-0x00000000006D0000-0x00000000006EA000-memory.dmp

Filesize
104KB

Download
memory/1972-55-0x0000000075501000-0x0000000075503000-memory.dmp

Filesize
8KB

Download
memory/1972-54-0x0000000000860000-0x000000000096E000-memory.dmp

Filesize
1.1MB

Download
memory/1972-57-0x0000000000740000-0x000000000074C000-memory.dmp

Filesize
48KB

Download
memory/1972-63-0x0000000005050000-0x000000000507A000-memory.dmp

Filesize
168KB

Download
memory/1972-58-0x0000000005D60000-0x0000000005DE2000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads