blustealer | 730af6c6363a01ddc1fd49ecc3003c619e6e4c926d13539776fbc86c2c8b9d9d

General

Target

hesaphareketi-001.exe
Size

107KB
MD5

33cf695247d5045bd465e65ef156b900
SHA1

58e42b203b801136675b6f63d249867a10e64464
SHA256

730af6c6363a01ddc1fd49ecc3003c619e6e4c926d13539776fbc86c2c8b9d9d
SHA512

8c1726e64e8cdafc49ebb1d9572626c59d595441a74dc47bddd0396840638e464bb91e7f81d37c1034f3177bf196280e508966a61fd1e53b884a0a8516066533
SSDEEP

1536:97s05f/tmQiKh0Ovt0Xo++vw/18AyMMK4MIyx7mVcl:97s05XtD3OXo+mwNJb4MIyx78Y

Score

10^/10

blustealer stormkitty collection persistence stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5468731092:AAGGNQWBVRhX622u6xp1moMhaunIGtXuIxg/sendMessage?chat_id=1639214896

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/2252-149-0x0000000000180000-0x000000000019A000-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.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\Yhkmcuetz = "\"C:\\Users\\Admin\\AppData\\Roaming\\Drcuui\\Yhkmcuetz.exe\""	hesaphareketi-001.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 676 set thread context of 2016	676	hesaphareketi-001.exe	85
PID 2016 set thread context of 2252	2016	hesaphareketi-001.exe	86

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
664	powershell.exe
664	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	676	hesaphareketi-001.exe
Token: SeDebugPrivilege	664	powershell.exe
Token: SeDebugPrivilege	2252	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2016	hesaphareketi-001.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 676 wrote to memory of 664	676	hesaphareketi-001.exe	83
PID 676 wrote to memory of 664	676	hesaphareketi-001.exe	83
PID 676 wrote to memory of 664	676	hesaphareketi-001.exe	83
PID 676 wrote to memory of 2016	676	hesaphareketi-001.exe	85
PID 676 wrote to memory of 2016	676	hesaphareketi-001.exe	85
PID 676 wrote to memory of 2016	676	hesaphareketi-001.exe	85
PID 676 wrote to memory of 2016	676	hesaphareketi-001.exe	85
PID 676 wrote to memory of 2016	676	hesaphareketi-001.exe	85
PID 676 wrote to memory of 2016	676	hesaphareketi-001.exe	85
PID 676 wrote to memory of 2016	676	hesaphareketi-001.exe	85
PID 676 wrote to memory of 2016	676	hesaphareketi-001.exe	85
PID 2016 wrote to memory of 2252	2016	hesaphareketi-001.exe	86
PID 2016 wrote to memory of 2252	2016	hesaphareketi-001.exe	86
PID 2016 wrote to memory of 2252	2016	hesaphareketi-001.exe	86
PID 2016 wrote to memory of 2252	2016	hesaphareketi-001.exe	86
PID 2016 wrote to memory of 2252	2016	hesaphareketi-001.exe	86

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.exe
"C:\Users\Admin\AppData\Local\Temp\hesaphareketi-001.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:676
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:664
- C:\Users\Admin\AppData\Local\Temp\hesaphareketi-001.exe
  C:\Users\Admin\AppData\Local\Temp\hesaphareketi-001.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2016
- - 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:2252

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

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Downloads

memory/664-140-0x0000000007BA0000-0x000000000821A000-memory.dmp

Filesize
6.5MB

Download
memory/664-141-0x0000000006870000-0x000000000688A000-memory.dmp

Filesize
104KB

Download
memory/664-135-0x0000000002A50000-0x0000000002A86000-memory.dmp

Filesize
216KB

Download
memory/664-136-0x0000000005610000-0x0000000005C38000-memory.dmp

Filesize
6.2MB

Download
memory/664-137-0x0000000005540000-0x00000000055A6000-memory.dmp

Filesize
408KB

Download
memory/664-138-0x0000000005D30000-0x0000000005D96000-memory.dmp

Filesize
408KB

Download
memory/664-139-0x0000000006370000-0x000000000638E000-memory.dmp

Filesize
120KB

Download
memory/676-133-0x0000000006E80000-0x0000000006EA2000-memory.dmp

Filesize
136KB

Download
memory/676-132-0x00000000004D0000-0x00000000004F0000-memory.dmp

Filesize
128KB

Download
memory/2016-152-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2016-143-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2016-145-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2016-150-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2252-149-0x0000000000180000-0x000000000019A000-memory.dmp

Filesize
104KB

Download
memory/2252-151-0x00000000052B0000-0x000000000534C000-memory.dmp

Filesize
624KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads