blustealer | 4e5a9038e28e8dbaabca34fe43c79805c8c981fe3f4072ffbd592ae8e7762120

General

Target

SWIFT_#W23756489996783546.pdf.exe
Size

23KB
MD5

4f78d3f0bf744a5cbed541dd16bcae06
SHA1

4fd0ba25d909aae7323779726adf50962f54d639
SHA256

4e5a9038e28e8dbaabca34fe43c79805c8c981fe3f4072ffbd592ae8e7762120
SHA512

d67df7825f31c3fa076e58bd0813a5717aa49e80e39bb38b39a270806240229ecb94e3e153d6545b8ab121870243e858fbd8c5995dce8ad8de818746e0214380
SSDEEP

384:Y12UBFzL8oCPteunOPU526JSIN/+p8YlLHT5PoKVRUve:s8o04uOi2A1/+p8e8v

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
behavioral2/memory/4700-150-0x0000000000C20000-0x0000000000C3A000-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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	SWIFT_#W23756489996783546.pdf.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Eilpl = "\"C:\\Users\\Admin\\AppData\\Roaming\\Gerduz\\Eilpl.exe\""	SWIFT_#W23756489996783546.pdf.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
35	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2204 set thread context of 4496	2204	SWIFT_#W23756489996783546.pdf.exe	90
PID 4496 set thread context of 4700	4496	SWIFT_#W23756489996783546.pdf.exe	91

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 2 IoCs

pid	Process
540	powershell.exe
540	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2204	SWIFT_#W23756489996783546.pdf.exe
Token: SeDebugPrivilege	540	powershell.exe
Token: SeDebugPrivilege	4700	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4496	SWIFT_#W23756489996783546.pdf.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2204 wrote to memory of 540	2204	SWIFT_#W23756489996783546.pdf.exe	83
PID 2204 wrote to memory of 540	2204	SWIFT_#W23756489996783546.pdf.exe	83
PID 2204 wrote to memory of 540	2204	SWIFT_#W23756489996783546.pdf.exe	83
PID 2204 wrote to memory of 4496	2204	SWIFT_#W23756489996783546.pdf.exe	90
PID 2204 wrote to memory of 4496	2204	SWIFT_#W23756489996783546.pdf.exe	90
PID 2204 wrote to memory of 4496	2204	SWIFT_#W23756489996783546.pdf.exe	90
PID 2204 wrote to memory of 4496	2204	SWIFT_#W23756489996783546.pdf.exe	90
PID 2204 wrote to memory of 4496	2204	SWIFT_#W23756489996783546.pdf.exe	90
PID 2204 wrote to memory of 4496	2204	SWIFT_#W23756489996783546.pdf.exe	90
PID 2204 wrote to memory of 4496	2204	SWIFT_#W23756489996783546.pdf.exe	90
PID 2204 wrote to memory of 4496	2204	SWIFT_#W23756489996783546.pdf.exe	90
PID 4496 wrote to memory of 4700	4496	SWIFT_#W23756489996783546.pdf.exe	91
PID 4496 wrote to memory of 4700	4496	SWIFT_#W23756489996783546.pdf.exe	91
PID 4496 wrote to memory of 4700	4496	SWIFT_#W23756489996783546.pdf.exe	91
PID 4496 wrote to memory of 4700	4496	SWIFT_#W23756489996783546.pdf.exe	91
PID 4496 wrote to memory of 4700	4496	SWIFT_#W23756489996783546.pdf.exe	91

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\SWIFT_#W23756489996783546.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\SWIFT_#W23756489996783546.pdf.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2204
- 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:540
- C:\Users\Admin\AppData\Local\Temp\SWIFT_#W23756489996783546.pdf.exe
  C:\Users\Admin\AppData\Local\Temp\SWIFT_#W23756489996783546.pdf.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4496
- - 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:4700

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/540-140-0x0000000007F20000-0x000000000859A000-memory.dmp

Filesize
6.5MB

Download
memory/540-141-0x0000000006BD0000-0x0000000006BEA000-memory.dmp

Filesize
104KB

Download
memory/540-135-0x0000000003120000-0x0000000003156000-memory.dmp

Filesize
216KB

Download
memory/540-136-0x0000000005830000-0x0000000005E58000-memory.dmp

Filesize
6.2MB

Download
memory/540-137-0x0000000005FD0000-0x0000000006036000-memory.dmp

Filesize
408KB

Download
memory/540-138-0x0000000006040000-0x00000000060A6000-memory.dmp

Filesize
408KB

Download
memory/540-139-0x00000000066D0000-0x00000000066EE000-memory.dmp

Filesize
120KB

Download
memory/2204-133-0x0000000005FE0000-0x0000000006002000-memory.dmp

Filesize
136KB

Download
memory/2204-132-0x0000000000720000-0x000000000072C000-memory.dmp

Filesize
48KB

Download
memory/4496-143-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4496-145-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4496-148-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4496-151-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4700-152-0x0000000005A10000-0x0000000005AAC000-memory.dmp

Filesize
624KB

Download
memory/4700-150-0x0000000000C20000-0x0000000000C3A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads