blustealer | 54f58b71edf0a942fa517b866e0e313e41e36a4c2499e5d0796b1d1c2878c393

General

Target

SFP-22-FC-0686.exe
Size

797KB
MD5

57230076ca876a672ae1bbbfc02bb91f
SHA1

f314804f242e74fa4cce3b7b037377e6ba545883
SHA256

e159a74241500581bc177ee274c8f7a19722865f35ae19084b7fe0c9db7e67b0
SHA512

1473de14683fc9ccfa90b91ec189dbbcae5514bdbfa5e40b3f307ece292516133cf7ec6d696b226c74e289ef4714b702b9b8ff35d5c8c4a8b9cfba70e7e285f7
SSDEEP

12288:0wBfEugcx3FYPbF9fjUIYPp8kJwN22ntUsw0o6LKDTJ4djC5u:E4GPbFF5YRWxhLKDZ

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5576673774:AAF__hFRh9bcJV72HkFb-9eZR9JNNyuOmFM/sendMessage?chat_id=1194722650

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/836-74-0x0000000000190000-0x00000000001AA000-memory.dmp	family_stormkitty
behavioral1/memory/836-75-0x00000000001A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/836-77-0x0000000000190000-0x00000000001AA000-memory.dmp	family_stormkitty
behavioral1/memory/836-79-0x0000000000190000-0x00000000001AA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\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 1112 set thread context of 1076	1112	SFP-22-FC-0686.exe	28
PID 1076 set thread context of 836	1076	RegSvcs.exe	29

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	836	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1076	RegSvcs.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1112 wrote to memory of 1076	1112	SFP-22-FC-0686.exe	28
PID 1112 wrote to memory of 1076	1112	SFP-22-FC-0686.exe	28
PID 1112 wrote to memory of 1076	1112	SFP-22-FC-0686.exe	28
PID 1112 wrote to memory of 1076	1112	SFP-22-FC-0686.exe	28
PID 1112 wrote to memory of 1076	1112	SFP-22-FC-0686.exe	28
PID 1112 wrote to memory of 1076	1112	SFP-22-FC-0686.exe	28
PID 1112 wrote to memory of 1076	1112	SFP-22-FC-0686.exe	28
PID 1112 wrote to memory of 1076	1112	SFP-22-FC-0686.exe	28
PID 1112 wrote to memory of 1076	1112	SFP-22-FC-0686.exe	28
PID 1112 wrote to memory of 1076	1112	SFP-22-FC-0686.exe	28
PID 1112 wrote to memory of 1076	1112	SFP-22-FC-0686.exe	28
PID 1112 wrote to memory of 1076	1112	SFP-22-FC-0686.exe	28
PID 1076 wrote to memory of 836	1076	RegSvcs.exe	29
PID 1076 wrote to memory of 836	1076	RegSvcs.exe	29
PID 1076 wrote to memory of 836	1076	RegSvcs.exe	29
PID 1076 wrote to memory of 836	1076	RegSvcs.exe	29
PID 1076 wrote to memory of 836	1076	RegSvcs.exe	29
PID 1076 wrote to memory of 836	1076	RegSvcs.exe	29
PID 1076 wrote to memory of 836	1076	RegSvcs.exe	29
PID 1076 wrote to memory of 836	1076	RegSvcs.exe	29
PID 1076 wrote to memory of 836	1076	RegSvcs.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\SFP-22-FC-0686.exe
"C:\Users\Admin\AppData\Local\Temp\SFP-22-FC-0686.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1112
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1076
- - 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:836

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/836-74-0x0000000000190000-0x00000000001AA000-memory.dmp

Filesize
104KB

Download
memory/836-79-0x0000000000190000-0x00000000001AA000-memory.dmp

Filesize
104KB

Download
memory/836-77-0x0000000000190000-0x00000000001AA000-memory.dmp

Filesize
104KB

Download
memory/836-72-0x0000000000190000-0x00000000001AA000-memory.dmp

Filesize
104KB

Download
memory/1076-63-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1076-81-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1076-61-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1076-82-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1076-65-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1076-68-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1076-60-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1112-59-0x0000000002000000-0x0000000002028000-memory.dmp

Filesize
160KB

Download
memory/1112-57-0x0000000000230000-0x000000000023C000-memory.dmp

Filesize
48KB

Download
memory/1112-56-0x0000000000520000-0x0000000000538000-memory.dmp

Filesize
96KB

Download
memory/1112-55-0x0000000074D61000-0x0000000074D63000-memory.dmp

Filesize
8KB

Download
memory/1112-58-0x0000000000410000-0x0000000000490000-memory.dmp

Filesize
512KB

Download
memory/1112-54-0x0000000000340000-0x000000000040C000-memory.dmp

Filesize
816KB

Download

Analysis

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