blustealer | 635462342c88f30c79a7bbc5a8e594a3c72a9bdcd33fef4a64228ead8de93399

General

Target

22-2147 ET ALIMI,pdf.exe
Size

960KB
MD5

6732d27706bd0aa2fcdba4ec8abdbda7
SHA1

a6abd8fdfaaf1c7722d6b8ca39161624aa7c2c98
SHA256

635462342c88f30c79a7bbc5a8e594a3c72a9bdcd33fef4a64228ead8de93399
SHA512

da852f2696c2050e4a79ed7280a61825e7ddc40498bb751d5d4c35e16635642a108e2bbf83b40270709faa61655c76c7f961c32c1105ea57565a4130f3a2e38f
SSDEEP

12288:2Ye7VY2iNUsZ1DX/VDJiOEbVKRNS8/O4Jc3EEaFt6JAZrWmIvVFVuk1s3Wl3FkZy:v1uPQRN1hKuQAZrWmItF8lQFg2qdO

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5583812995:AAFKzjSLC2-pDvMQ8X47-80XjrRiWrDtxA/sendMessage?chat_id=5434600361

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/4888-154-0x0000000000D80000-0x0000000000D9A000-memory.dmp	family_stormkitty

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	22-2147 ET ALIMI,pdf.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\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
79	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4316 set thread context of 4272	4316	22-2147 ET ALIMI,pdf.exe	95
PID 4272 set thread context of 4888	4272	22-2147 ET ALIMI,pdf.exe	97

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

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
4376	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1100	powershell.exe
1100	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1100	powershell.exe
Token: SeDebugPrivilege	4888	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4272	22-2147 ET ALIMI,pdf.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4316 wrote to memory of 1100	4316	22-2147 ET ALIMI,pdf.exe	91
PID 4316 wrote to memory of 1100	4316	22-2147 ET ALIMI,pdf.exe	91
PID 4316 wrote to memory of 1100	4316	22-2147 ET ALIMI,pdf.exe	91
PID 4316 wrote to memory of 4376	4316	22-2147 ET ALIMI,pdf.exe	93
PID 4316 wrote to memory of 4376	4316	22-2147 ET ALIMI,pdf.exe	93
PID 4316 wrote to memory of 4376	4316	22-2147 ET ALIMI,pdf.exe	93
PID 4316 wrote to memory of 4272	4316	22-2147 ET ALIMI,pdf.exe	95
PID 4316 wrote to memory of 4272	4316	22-2147 ET ALIMI,pdf.exe	95
PID 4316 wrote to memory of 4272	4316	22-2147 ET ALIMI,pdf.exe	95
PID 4316 wrote to memory of 4272	4316	22-2147 ET ALIMI,pdf.exe	95
PID 4316 wrote to memory of 4272	4316	22-2147 ET ALIMI,pdf.exe	95
PID 4316 wrote to memory of 4272	4316	22-2147 ET ALIMI,pdf.exe	95
PID 4316 wrote to memory of 4272	4316	22-2147 ET ALIMI,pdf.exe	95
PID 4316 wrote to memory of 4272	4316	22-2147 ET ALIMI,pdf.exe	95
PID 4272 wrote to memory of 4888	4272	22-2147 ET ALIMI,pdf.exe	97
PID 4272 wrote to memory of 4888	4272	22-2147 ET ALIMI,pdf.exe	97
PID 4272 wrote to memory of 4888	4272	22-2147 ET ALIMI,pdf.exe	97
PID 4272 wrote to memory of 4888	4272	22-2147 ET ALIMI,pdf.exe	97
PID 4272 wrote to memory of 4888	4272	22-2147 ET ALIMI,pdf.exe	97

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\22-2147 ET ALIMI,pdf.exe
"C:\Users\Admin\AppData\Local\Temp\22-2147 ET ALIMI,pdf.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4316
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\JutYvdZEVhdC.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1100
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JutYvdZEVhdC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3DE4.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4376
- C:\Users\Admin\AppData\Local\Temp\22-2147 ET ALIMI,pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\22-2147 ET ALIMI,pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4272
- - 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:4888

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3DE4.tmp

Filesize
1KB

MD5
2bb28371db98faf44ecbaefa3a6936d1

SHA1
55524cfe3e75f0c4a7a41bc70ef960f45f603718

SHA256
102282e64dcaab96f3aed97e1d418f5b1073c74aeea2035916103cf11a94baad

SHA512
08e1852a1304f72376db34cc092cb1f98dbd317ce470e0592f903104fac683096693b56be024ff79bf16500b5b4f47f1fefb37ecbe856d7465d88ae7ada04fe9

Download Submit
memory/1100-149-0x00000000055C0000-0x0000000005626000-memory.dmp

Filesize
408KB

Download
memory/1100-142-0x0000000005690000-0x0000000005CB8000-memory.dmp

Filesize
6.2MB

Download
memory/1100-150-0x0000000005D30000-0x0000000005D96000-memory.dmp

Filesize
408KB

Download
memory/1100-164-0x0000000007970000-0x0000000007978000-memory.dmp

Filesize
32KB

Download
memory/1100-163-0x0000000007990000-0x00000000079AA000-memory.dmp

Filesize
104KB

Download
memory/1100-139-0x0000000002A10000-0x0000000002A46000-memory.dmp

Filesize
216KB

Download
memory/1100-162-0x0000000007880000-0x000000000788E000-memory.dmp

Filesize
56KB

Download
memory/1100-161-0x00000000078D0000-0x0000000007966000-memory.dmp

Filesize
600KB

Download
memory/1100-152-0x0000000006340000-0x000000000635E000-memory.dmp

Filesize
120KB

Download
memory/1100-160-0x00000000076C0000-0x00000000076CA000-memory.dmp

Filesize
40KB

Download
memory/1100-159-0x0000000007650000-0x000000000766A000-memory.dmp

Filesize
104KB

Download
memory/1100-148-0x00000000054A0000-0x00000000054C2000-memory.dmp

Filesize
136KB

Download
memory/1100-158-0x0000000007C90000-0x000000000830A000-memory.dmp

Filesize
6.5MB

Download
memory/1100-157-0x0000000007510000-0x000000000752E000-memory.dmp

Filesize
120KB

Download
memory/1100-156-0x0000000071560000-0x00000000715AC000-memory.dmp

Filesize
304KB

Download
memory/1100-155-0x0000000006910000-0x0000000006942000-memory.dmp

Filesize
200KB

Download
memory/4272-165-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4272-145-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4272-143-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4272-151-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4316-135-0x0000000004E70000-0x0000000004E7A000-memory.dmp

Filesize
40KB

Download
memory/4316-132-0x0000000000350000-0x0000000000446000-memory.dmp

Filesize
984KB

Download
memory/4316-134-0x0000000004DD0000-0x0000000004E62000-memory.dmp

Filesize
584KB

Download
memory/4316-133-0x0000000005460000-0x0000000005A04000-memory.dmp

Filesize
5.6MB

Download
memory/4316-136-0x00000000087C0000-0x000000000885C000-memory.dmp

Filesize
624KB

Download
memory/4888-154-0x0000000000D80000-0x0000000000D9A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads