blustealer | 9c71b54c43e5cabec212c1a02317da8c51915aec8944ea88a84e7a5490ceb1a3

General

Target

0FERTA_Y.exe
Size

202KB
MD5

a9419910dc159e785f4f7d060b99703d
SHA1

164c8c53881f9e65d19233c6b9eed1d0231e7cfb
SHA256

56fe514e3ea3eda0569cf8b79741fe9ed9b391fe06f07b33d847ccdd7fda18ae
SHA512

f8dad0c0825aab81f9ad4ca4d138b7e653181b3c4d9ad8162f99568ea55168b82265097afa8be8afc23ad571547647b32bf49f0247fbe14b67269e8144b80358
SSDEEP

6144:tH6xBmSbrrTTCgb9/z2qBop/Nkt9Tdz/6R36:tAWgbdgp/NktrWR

Score

10^/10

blustealer stormkitty collection spyware stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5627356603:AAG-Mx0TbSHRRW6IwndrpX3VLZdhd6C-Zac/sendMessage?chat_id=5472437377

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 3 IoCs

resource	yara_rule
behavioral1/memory/1756-68-0x0000000000190000-0x00000000001AA000-memory.dmp	family_stormkitty
behavioral1/memory/1756-70-0x0000000000190000-0x00000000001AA000-memory.dmp	family_stormkitty
behavioral1/memory/1756-72-0x0000000000190000-0x00000000001AA000-memory.dmp	family_stormkitty

.NET Reactor proctector 1 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
behavioral1/memory/1576-54-0x00000000003A0000-0x00000000003D8000-memory.dmp	net_reactor

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081

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 1576 set thread context of 924	1576	0FERTA_Y.exe	30
PID 924 set thread context of 1756	924	Caspol.exe	31

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 4 IoCs

pid	Process
1576	0FERTA_Y.exe
1576	0FERTA_Y.exe
1576	0FERTA_Y.exe
1576	0FERTA_Y.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1576	0FERTA_Y.exe
Token: SeDebugPrivilege	1756	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
924	Caspol.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1576 wrote to memory of 1504	1576	0FERTA_Y.exe	28
PID 1576 wrote to memory of 1504	1576	0FERTA_Y.exe	28
PID 1576 wrote to memory of 1504	1576	0FERTA_Y.exe	28
PID 1576 wrote to memory of 1504	1576	0FERTA_Y.exe	28
PID 1576 wrote to memory of 1924	1576	0FERTA_Y.exe	29
PID 1576 wrote to memory of 1924	1576	0FERTA_Y.exe	29
PID 1576 wrote to memory of 1924	1576	0FERTA_Y.exe	29
PID 1576 wrote to memory of 1924	1576	0FERTA_Y.exe	29
PID 1576 wrote to memory of 924	1576	0FERTA_Y.exe	30
PID 1576 wrote to memory of 924	1576	0FERTA_Y.exe	30
PID 1576 wrote to memory of 924	1576	0FERTA_Y.exe	30
PID 1576 wrote to memory of 924	1576	0FERTA_Y.exe	30
PID 1576 wrote to memory of 924	1576	0FERTA_Y.exe	30
PID 1576 wrote to memory of 924	1576	0FERTA_Y.exe	30
PID 1576 wrote to memory of 924	1576	0FERTA_Y.exe	30
PID 1576 wrote to memory of 924	1576	0FERTA_Y.exe	30
PID 1576 wrote to memory of 924	1576	0FERTA_Y.exe	30
PID 924 wrote to memory of 1756	924	Caspol.exe	31
PID 924 wrote to memory of 1756	924	Caspol.exe	31
PID 924 wrote to memory of 1756	924	Caspol.exe	31
PID 924 wrote to memory of 1756	924	Caspol.exe	31
PID 924 wrote to memory of 1756	924	Caspol.exe	31
PID 924 wrote to memory of 1756	924	Caspol.exe	31
PID 924 wrote to memory of 1756	924	Caspol.exe	31
PID 924 wrote to memory of 1756	924	Caspol.exe	31
PID 924 wrote to memory of 1756	924	Caspol.exe	31

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\0FERTA_Y.exe
"C:\Users\Admin\AppData\Local\Temp\0FERTA_Y.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1576
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe"
  2⤵
  PID:1504
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe"
  2⤵
  PID:1924
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:924
- - 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:1756

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/924-73-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/924-56-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/924-57-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/924-58-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/924-60-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/924-61-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/924-63-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/924-75-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1576-55-0x0000000000340000-0x0000000000350000-memory.dmp

Filesize
64KB

Download
memory/1576-54-0x00000000003A0000-0x00000000003D8000-memory.dmp

Filesize
224KB

Download
memory/1756-66-0x0000000000190000-0x00000000001AA000-memory.dmp

Filesize
104KB

Download
memory/1756-70-0x0000000000190000-0x00000000001AA000-memory.dmp

Filesize
104KB

Download
memory/1756-72-0x0000000000190000-0x00000000001AA000-memory.dmp

Filesize
104KB

Download
memory/1756-68-0x0000000000190000-0x00000000001AA000-memory.dmp

Filesize
104KB

Download
memory/1756-74-0x0000000000860000-0x00000000008A0000-memory.dmp

Filesize
256KB

Download
memory/1756-67-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download

Analysis

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