blustealer | d8c010b7d4e2b63ed74a680750f3671ba6674e9c51eb061e610f1ed72ba63f1e

General

Target

098765432345678987654.exe
Size

1.7MB
MD5

ca6a0d1a61d47ca4b6e9ea29bb5a357a
SHA1

890525244230e81fddf090a13b0502132626bcdf
SHA256

d8c010b7d4e2b63ed74a680750f3671ba6674e9c51eb061e610f1ed72ba63f1e
SHA512

380dc32bef3f12bbcb14d14340ebbfb362ce37d1e0e54e198236419a9ab4ddefa5f67ce9efc2061b5711aab91f95327d110f190fdf2f1741905807435746df35

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/948-74-0x00000000001D0000-0x00000000001EA000-memory.dmp	family_stormkitty
behavioral1/memory/948-75-0x00000000001E4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/948-77-0x00000000001D0000-0x00000000001EA000-memory.dmp	family_stormkitty
behavioral1/memory/948-79-0x00000000001D0000-0x00000000001EA000-memory.dmp	family_stormkitty

Loads dropped DLL 2 IoCs

pid	Process
1980	098765432345678987654.exe
1980	098765432345678987654.exe

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
5	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1980 set thread context of 1544	1980	098765432345678987654.exe	27
PID 1544 set thread context of 948	1544	098765432345678987654.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 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1980	098765432345678987654.exe
Token: SeDebugPrivilege	948	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1544	098765432345678987654.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1980 wrote to memory of 1544	1980	098765432345678987654.exe	27
PID 1980 wrote to memory of 1544	1980	098765432345678987654.exe	27
PID 1980 wrote to memory of 1544	1980	098765432345678987654.exe	27
PID 1980 wrote to memory of 1544	1980	098765432345678987654.exe	27
PID 1980 wrote to memory of 1544	1980	098765432345678987654.exe	27
PID 1980 wrote to memory of 1544	1980	098765432345678987654.exe	27
PID 1980 wrote to memory of 1544	1980	098765432345678987654.exe	27
PID 1980 wrote to memory of 1544	1980	098765432345678987654.exe	27
PID 1980 wrote to memory of 1544	1980	098765432345678987654.exe	27
PID 1544 wrote to memory of 948	1544	098765432345678987654.exe	28
PID 1544 wrote to memory of 948	1544	098765432345678987654.exe	28
PID 1544 wrote to memory of 948	1544	098765432345678987654.exe	28
PID 1544 wrote to memory of 948	1544	098765432345678987654.exe	28
PID 1544 wrote to memory of 948	1544	098765432345678987654.exe	28
PID 1544 wrote to memory of 948	1544	098765432345678987654.exe	28
PID 1544 wrote to memory of 948	1544	098765432345678987654.exe	28
PID 1544 wrote to memory of 948	1544	098765432345678987654.exe	28
PID 1544 wrote to memory of 948	1544	098765432345678987654.exe	28

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\098765432345678987654.exe
"C:\Users\Admin\AppData\Local\Temp\098765432345678987654.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1980
- C:\Users\Admin\AppData\Local\Temp\098765432345678987654.exe
  "C:\Users\Admin\AppData\Local\Temp\098765432345678987654.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1544
- - 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:948

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

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Downloads

\Users\Admin\AppData\Roaming\CompatibleComparer.dll

Filesize
42KB

MD5
6b0c831b7e0312bca059afb14730242e

SHA1
97c13f5d1fdf1a124ba0ae8bf55ea879545c2a1a

SHA256
8f2cf1511d3cc1e5f975c7790f282e0004ff805a4bfa4f578443e7ff0546a1bf

SHA512
01ef11e6649ff679c4d444f76855aae7358db0350c7cc423354152ced87247a046c6dddf6c3a98365186796868461be38b8822fd6ba595e685f6f03cfa0637bc

Download Submit
\Users\Admin\AppData\Roaming\CompatibleComparer.dll

Filesize
42KB

MD5
6b0c831b7e0312bca059afb14730242e

SHA1
97c13f5d1fdf1a124ba0ae8bf55ea879545c2a1a

SHA256
8f2cf1511d3cc1e5f975c7790f282e0004ff805a4bfa4f578443e7ff0546a1bf

SHA512
01ef11e6649ff679c4d444f76855aae7358db0350c7cc423354152ced87247a046c6dddf6c3a98365186796868461be38b8822fd6ba595e685f6f03cfa0637bc

Download Submit
memory/948-72-0x00000000001D0000-0x00000000001EA000-memory.dmp

Filesize
104KB

Download
memory/948-79-0x00000000001D0000-0x00000000001EA000-memory.dmp

Filesize
104KB

Download
memory/948-77-0x00000000001D0000-0x00000000001EA000-memory.dmp

Filesize
104KB

Download
memory/948-74-0x00000000001D0000-0x00000000001EA000-memory.dmp

Filesize
104KB

Download
memory/1544-64-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1544-67-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1544-71-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1544-62-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1544-60-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1544-59-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1544-81-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1980-54-0x0000000000F90000-0x000000000114A000-memory.dmp

Filesize
1.7MB

Download
memory/1980-58-0x0000000000BB0000-0x0000000000BC2000-memory.dmp

Filesize
72KB

Download
memory/1980-55-0x0000000075A81000-0x0000000075A83000-memory.dmp

Filesize
8KB

Download

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