blustealer | 09049dc883b74c4c6dbfcd2178ce9eccec59ddd476c9c4bfca4a40cace9de338

Resubmissions

15-09-2022 19:33

220915-x919dahfeq 10

15-09-2022 19:02

220915-xp1r4sdhb8 10

Analysis

max time kernel
150s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
15-09-2022 19:02

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General

Target

jVmDUI3M4mLH141.exe
Size

924KB
MD5

6b2874b71838bb35b1bbf5394322cf2a
SHA1

e9f112a2cd8af4359d3833c59421b89dde2f52dd
SHA256

346277a4a4b0582ad1e74421617c8d1c33708c0a3803ff2b56ab7bc3af0d7c53
SHA512

4c315bbc83e1bc418d3bbbc6212a0c42d4aa4b73b4bf8c9f9bc7244b7fc833c5baa105b5c983383720cd04b415fa07d881857daf4efce028c21f947b8ecd261b
SSDEEP

12288:sjVF75eQyMCHA4bPgkgPwqoXYkCkgrQlU2h3Wqzqqj3rZ8D8R/7pkqIwpq:kZ50MEZXYkCTQlU2VWqz9NWA/7R0

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

https://api.telegram.org/bot5608275589:AAEBKoKuUDc5lzk8kVGZfdScO_TE6z3q4UA/sendMessage?chat_id=5274798743

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/2356-146-0x0000000000F40000-0x0000000000F5A000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\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
37	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 988 set thread context of 3640	988	jVmDUI3M4mLH141.exe	89
PID 3640 set thread context of 2356	3640	jVmDUI3M4mLH141.exe	90

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 4 IoCs

pid	Process
988	jVmDUI3M4mLH141.exe
988	jVmDUI3M4mLH141.exe
988	jVmDUI3M4mLH141.exe
988	jVmDUI3M4mLH141.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3640	jVmDUI3M4mLH141.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	988	jVmDUI3M4mLH141.exe
Token: SeDebugPrivilege	2356	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3640	jVmDUI3M4mLH141.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 988 wrote to memory of 3640	988	jVmDUI3M4mLH141.exe	89
PID 988 wrote to memory of 3640	988	jVmDUI3M4mLH141.exe	89
PID 988 wrote to memory of 3640	988	jVmDUI3M4mLH141.exe	89
PID 988 wrote to memory of 3640	988	jVmDUI3M4mLH141.exe	89
PID 988 wrote to memory of 3640	988	jVmDUI3M4mLH141.exe	89
PID 988 wrote to memory of 3640	988	jVmDUI3M4mLH141.exe	89
PID 988 wrote to memory of 3640	988	jVmDUI3M4mLH141.exe	89
PID 988 wrote to memory of 3640	988	jVmDUI3M4mLH141.exe	89
PID 3640 wrote to memory of 2356	3640	jVmDUI3M4mLH141.exe	90
PID 3640 wrote to memory of 2356	3640	jVmDUI3M4mLH141.exe	90
PID 3640 wrote to memory of 2356	3640	jVmDUI3M4mLH141.exe	90
PID 3640 wrote to memory of 2356	3640	jVmDUI3M4mLH141.exe	90
PID 3640 wrote to memory of 2356	3640	jVmDUI3M4mLH141.exe	90

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\jVmDUI3M4mLH141.exe
"C:\Users\Admin\AppData\Local\Temp\jVmDUI3M4mLH141.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:988
- C:\Users\Admin\AppData\Local\Temp\jVmDUI3M4mLH141.exe
  "C:\Users\Admin\AppData\Local\Temp\jVmDUI3M4mLH141.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3640
- - 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:2356

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/988-133-0x0000000005970000-0x0000000005F14000-memory.dmp

Filesize
5.6MB

Download
memory/988-134-0x0000000005270000-0x0000000005302000-memory.dmp

Filesize
584KB

Download
memory/988-135-0x0000000005240000-0x000000000524A000-memory.dmp

Filesize
40KB

Download
memory/988-136-0x000000000A070000-0x000000000A10C000-memory.dmp

Filesize
624KB

Download
memory/988-137-0x000000000A4B0000-0x000000000A516000-memory.dmp

Filesize
408KB

Download
memory/988-132-0x00000000007B0000-0x000000000089E000-memory.dmp

Filesize
952KB

Download
memory/2356-146-0x0000000000F40000-0x0000000000F5A000-memory.dmp

Filesize
104KB

Download
memory/3640-144-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3640-141-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3640-139-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3640-147-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download