blustealer | aac2f3890ef56925b86a147bea1ccb6489b7cf1e7e5ecbe40e6b0602d6aa8a14

General

Target

Revised shipment.pdf.exe
Size

706KB
MD5

f79203454fd766c8189d00c43cfc7485
SHA1

fe44898d206f0b4ef9497e7b7b2e9dedcd4335aa
SHA256

3909f1e1d41d36e0f62bd770841a0a8ea28c2b7d52f2e2fc77457538fbd7a291
SHA512

2b88a745ec24591e5a5b28ade1470416a6bfe2bed86383c276736d0142ddae64bf985cd84772ac00512868f1741f3a7cab555a7a53f95eb5408a582d0fbb8ad1
SSDEEP

12288:2NTBQCM0OHM5LHtzIJ7eKkT1CFgJYaWIZZSwCinCSrtg6SKlpx:oTk+LRKkUItQOCgbLlpx

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/1552-79-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1552-80-0x00000000000A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/1552-84-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1552-82-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2591564548-2301609547-1748242483-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2591564548-2301609547-1748242483-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2591564548-2301609547-1748242483-1000\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 268	1972	Revised shipment.pdf.exe	31
PID 268 set thread context of 1552	268	Revised shipment.pdf.exe	32

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
2044	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1972	Revised shipment.pdf.exe
1972	Revised shipment.pdf.exe
1972	Revised shipment.pdf.exe
1972	Revised shipment.pdf.exe
1972	Revised shipment.pdf.exe
1972	Revised shipment.pdf.exe
2032	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1972	Revised shipment.pdf.exe
Token: SeDebugPrivilege	2032	powershell.exe
Token: SeDebugPrivilege	1552	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
268	Revised shipment.pdf.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 2032	1972	Revised shipment.pdf.exe	27
PID 1972 wrote to memory of 2032	1972	Revised shipment.pdf.exe	27
PID 1972 wrote to memory of 2032	1972	Revised shipment.pdf.exe	27
PID 1972 wrote to memory of 2032	1972	Revised shipment.pdf.exe	27
PID 1972 wrote to memory of 2044	1972	Revised shipment.pdf.exe	29
PID 1972 wrote to memory of 2044	1972	Revised shipment.pdf.exe	29
PID 1972 wrote to memory of 2044	1972	Revised shipment.pdf.exe	29
PID 1972 wrote to memory of 2044	1972	Revised shipment.pdf.exe	29
PID 1972 wrote to memory of 268	1972	Revised shipment.pdf.exe	31
PID 1972 wrote to memory of 268	1972	Revised shipment.pdf.exe	31
PID 1972 wrote to memory of 268	1972	Revised shipment.pdf.exe	31
PID 1972 wrote to memory of 268	1972	Revised shipment.pdf.exe	31
PID 1972 wrote to memory of 268	1972	Revised shipment.pdf.exe	31
PID 1972 wrote to memory of 268	1972	Revised shipment.pdf.exe	31
PID 1972 wrote to memory of 268	1972	Revised shipment.pdf.exe	31
PID 1972 wrote to memory of 268	1972	Revised shipment.pdf.exe	31
PID 1972 wrote to memory of 268	1972	Revised shipment.pdf.exe	31
PID 268 wrote to memory of 1552	268	Revised shipment.pdf.exe	32
PID 268 wrote to memory of 1552	268	Revised shipment.pdf.exe	32
PID 268 wrote to memory of 1552	268	Revised shipment.pdf.exe	32
PID 268 wrote to memory of 1552	268	Revised shipment.pdf.exe	32
PID 268 wrote to memory of 1552	268	Revised shipment.pdf.exe	32
PID 268 wrote to memory of 1552	268	Revised shipment.pdf.exe	32
PID 268 wrote to memory of 1552	268	Revised shipment.pdf.exe	32
PID 268 wrote to memory of 1552	268	Revised shipment.pdf.exe	32
PID 268 wrote to memory of 1552	268	Revised shipment.pdf.exe	32

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2591564548-2301609547-1748242483-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2591564548-2301609547-1748242483-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Revised shipment.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Revised shipment.pdf.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\vEOwgfttl.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2032
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vEOwgfttl" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFAE3.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2044
- C:\Users\Admin\AppData\Local\Temp\Revised shipment.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Revised shipment.pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:268
- - 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:1552

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\tmpFAE3.tmp

Filesize
1KB

MD5
dd668b3c4e7a552bad4a84f6ef9026e5

SHA1
34c643055f202f1066b82ca3b72354974c494972

SHA256
134bf722f3fe0af09543a7eb7e425a065a3493e99ddec7883eb44d24614d57b7

SHA512
d8764b0a8973333f99a6ba48b52276fa08e48af6fd480a3793c5d48270049c937d2040ba5e1ad83d60ad97063ae841221dd05d095f110d657a83c6e1e6da0fe8

Download Submit
memory/268-64-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/268-88-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/268-76-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/268-72-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/268-69-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/268-67-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/268-65-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1552-84-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1552-82-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1552-77-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1552-79-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1972-57-0x0000000000580000-0x000000000058A000-memory.dmp

Filesize
40KB

Download
memory/1972-56-0x0000000000560000-0x0000000000576000-memory.dmp

Filesize
88KB

Download
memory/1972-58-0x0000000005290000-0x0000000005302000-memory.dmp

Filesize
456KB

Download
memory/1972-54-0x0000000000940000-0x00000000009F8000-memory.dmp

Filesize
736KB

Download
memory/1972-63-0x00000000046D0000-0x00000000046FA000-memory.dmp

Filesize
168KB

Download
memory/1972-55-0x00000000761A1000-0x00000000761A3000-memory.dmp

Filesize
8KB

Download
memory/2032-86-0x000000006C350000-0x000000006C8FB000-memory.dmp

Filesize
5.7MB

Download
memory/2032-87-0x000000006C350000-0x000000006C8FB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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