blustealer | da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628

General

Target

da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe
Size

978KB
MD5

5114af44629e0c885fb514c3b0f6fb95
SHA1

433549954ee3330268c26fc7cb4f3665525feb82
SHA256

da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628
SHA512

bcddef915d811dbcd3719d7c7a30add5635386b4b48cd38e05e1c180488d23e9deecd1e67a4db35df7b2fa67a09a5c06747175bba1c5830043222fc7dd53539e
SSDEEP

12288:L/2YODrqNsTEOajT7VDAyaFIn7/N4IkIhN+NpjqagJyi7wX1JNp1ynn2jG:LarPQOWHVn7/NpopjrgtMX1JV4X

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5374342837:AAHF-c1HAIvNCdF89VuEdNggsL2YBlpgkSE/sendMessage?chat_id=2133303215

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/436-75-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/436-76-0x00000000000A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/436-78-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/436-80-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\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 956 set thread context of 876	956	da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe	27
PID 876 set thread context of 436	876	da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe	28

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 use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	436	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
876	da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 956 wrote to memory of 876	956	da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe	27
PID 956 wrote to memory of 876	956	da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe	27
PID 956 wrote to memory of 876	956	da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe	27
PID 956 wrote to memory of 876	956	da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe	27
PID 956 wrote to memory of 876	956	da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe	27
PID 956 wrote to memory of 876	956	da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe	27
PID 956 wrote to memory of 876	956	da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe	27
PID 956 wrote to memory of 876	956	da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe	27
PID 956 wrote to memory of 876	956	da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe	27
PID 876 wrote to memory of 436	876	da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe	28
PID 876 wrote to memory of 436	876	da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe	28
PID 876 wrote to memory of 436	876	da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe	28
PID 876 wrote to memory of 436	876	da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe	28
PID 876 wrote to memory of 436	876	da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe	28
PID 876 wrote to memory of 436	876	da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe	28
PID 876 wrote to memory of 436	876	da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe	28
PID 876 wrote to memory of 436	876	da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe	28
PID 876 wrote to memory of 436	876	da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe
"C:\Users\Admin\AppData\Local\Temp\da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:956
- C:\Users\Admin\AppData\Local\Temp\da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe
  "C:\Users\Admin\AppData\Local\Temp\da67541015af6ddee5bad1432ecc3efbf85cde69c494fd1635edbae606c4a628.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:876
- - 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:436

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/436-75-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/436-80-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/436-78-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/436-73-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/876-72-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/876-82-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/876-61-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/876-63-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/876-65-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/876-68-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/876-60-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/956-54-0x0000000000180000-0x000000000027A000-memory.dmp

Filesize
1000KB

Download
memory/956-58-0x0000000007E60000-0x0000000007EDE000-memory.dmp

Filesize
504KB

Download
memory/956-57-0x00000000006D0000-0x00000000006DC000-memory.dmp

Filesize
48KB

Download
memory/956-56-0x0000000000680000-0x0000000000694000-memory.dmp

Filesize
80KB

Download
memory/956-55-0x0000000076561000-0x0000000076563000-memory.dmp

Filesize
8KB

Download
memory/956-59-0x0000000007DF0000-0x0000000007E18000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing