blustealer | 270daae1261a5456d3a85fdd050e3f7c7f55ed69015bcffc1a4e958e2816a513

General

Target

Hesaphareketi-001,pdf.exe
Size

21KB
MD5

958ba282767aee7ee313ac28f4e010fd
SHA1

1d95529a755bfb1c39b79fd3915d55a95dec6a66
SHA256

270daae1261a5456d3a85fdd050e3f7c7f55ed69015bcffc1a4e958e2816a513
SHA512

f5a200471f933aa70d2e91745685e287f2a716a8ac97ddabbcd5ce43c8aa63cd75165ad4e6e944aaea72de155864cb9b734dab0d80edb530b2bbb35265f0dfd5
SSDEEP

384:KP4kZOL8LF7cS15iR/lW7VDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDyd5:KPfoQOYiR/lW7VDDDDDDDDDDDDDDDDDu

Score

10^/10

blustealer stormkitty collection persistence 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/2084-149-0x00000000001B0000-0x00000000001CA000-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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	Hesaphareketi-001,pdf.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Mofqctpzs = "\"C:\\Users\\Admin\\AppData\\Roaming\\Spxvjqmee\\Mofqctpzs.exe\""	Hesaphareketi-001,pdf.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
14	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 536 set thread context of 3676	536	Hesaphareketi-001,pdf.exe	84
PID 3676 set thread context of 2084	3676	Hesaphareketi-001,pdf.exe	85

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 2 IoCs

pid	Process
4772	powershell.exe
4772	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	536	Hesaphareketi-001,pdf.exe
Token: SeDebugPrivilege	4772	powershell.exe
Token: SeDebugPrivilege	2084	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3676	Hesaphareketi-001,pdf.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 536 wrote to memory of 4772	536	Hesaphareketi-001,pdf.exe	82
PID 536 wrote to memory of 4772	536	Hesaphareketi-001,pdf.exe	82
PID 536 wrote to memory of 4772	536	Hesaphareketi-001,pdf.exe	82
PID 536 wrote to memory of 3676	536	Hesaphareketi-001,pdf.exe	84
PID 536 wrote to memory of 3676	536	Hesaphareketi-001,pdf.exe	84
PID 536 wrote to memory of 3676	536	Hesaphareketi-001,pdf.exe	84
PID 536 wrote to memory of 3676	536	Hesaphareketi-001,pdf.exe	84
PID 536 wrote to memory of 3676	536	Hesaphareketi-001,pdf.exe	84
PID 536 wrote to memory of 3676	536	Hesaphareketi-001,pdf.exe	84
PID 536 wrote to memory of 3676	536	Hesaphareketi-001,pdf.exe	84
PID 536 wrote to memory of 3676	536	Hesaphareketi-001,pdf.exe	84
PID 3676 wrote to memory of 2084	3676	Hesaphareketi-001,pdf.exe	85
PID 3676 wrote to memory of 2084	3676	Hesaphareketi-001,pdf.exe	85
PID 3676 wrote to memory of 2084	3676	Hesaphareketi-001,pdf.exe	85
PID 3676 wrote to memory of 2084	3676	Hesaphareketi-001,pdf.exe	85
PID 3676 wrote to memory of 2084	3676	Hesaphareketi-001,pdf.exe	85

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Hesaphareketi-001,pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Hesaphareketi-001,pdf.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:536
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQA1AA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4772
- C:\Users\Admin\AppData\Local\Temp\Hesaphareketi-001,pdf.exe
  C:\Users\Admin\AppData\Local\Temp\Hesaphareketi-001,pdf.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3676
- - 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:2084

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/536-133-0x00000000061F0000-0x0000000006212000-memory.dmp

Filesize
136KB

Download
memory/536-132-0x0000000000B50000-0x0000000000B5C000-memory.dmp

Filesize
48KB

Download
memory/2084-151-0x00000000052A0000-0x000000000533C000-memory.dmp

Filesize
624KB

Download
memory/2084-149-0x00000000001B0000-0x00000000001CA000-memory.dmp

Filesize
104KB

Download
memory/3676-152-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/3676-150-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/3676-145-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/3676-143-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4772-136-0x0000000005190000-0x00000000057B8000-memory.dmp

Filesize
6.2MB

Download
memory/4772-141-0x00000000064D0000-0x00000000064EA000-memory.dmp

Filesize
104KB

Download
memory/4772-140-0x0000000007830000-0x0000000007EAA000-memory.dmp

Filesize
6.5MB

Download
memory/4772-139-0x0000000005FC0000-0x0000000005FDE000-memory.dmp

Filesize
120KB

Download
memory/4772-138-0x00000000059A0000-0x0000000005A06000-memory.dmp

Filesize
408KB

Download
memory/4772-137-0x00000000058C0000-0x0000000005926000-memory.dmp

Filesize
408KB

Download
memory/4772-135-0x00000000029E0000-0x0000000002A16000-memory.dmp

Filesize
216KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads