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/3716-150-0x0000000000FE0000-0x0000000000FFA000-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
18	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4904 set thread context of 480	4904	hesaphareketi-001.exe	92
PID 480 set thread context of 3716	480	hesaphareketi-001.exe	93

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
1636	powershell.exe
1636	powershell.exe
4904	hesaphareketi-001.exe
4904	hesaphareketi-001.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4904	hesaphareketi-001.exe
Token: SeDebugPrivilege	1636	powershell.exe
Token: SeDebugPrivilege	3716	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
480	hesaphareketi-001.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4904 wrote to memory of 1636	4904	hesaphareketi-001.exe	83
PID 4904 wrote to memory of 1636	4904	hesaphareketi-001.exe	83
PID 4904 wrote to memory of 1636	4904	hesaphareketi-001.exe	83
PID 4904 wrote to memory of 1376	4904	hesaphareketi-001.exe	91
PID 4904 wrote to memory of 1376	4904	hesaphareketi-001.exe	91
PID 4904 wrote to memory of 1376	4904	hesaphareketi-001.exe	91
PID 4904 wrote to memory of 480	4904	hesaphareketi-001.exe	92
PID 4904 wrote to memory of 480	4904	hesaphareketi-001.exe	92
PID 4904 wrote to memory of 480	4904	hesaphareketi-001.exe	92
PID 4904 wrote to memory of 480	4904	hesaphareketi-001.exe	92
PID 4904 wrote to memory of 480	4904	hesaphareketi-001.exe	92
PID 4904 wrote to memory of 480	4904	hesaphareketi-001.exe	92
PID 4904 wrote to memory of 480	4904	hesaphareketi-001.exe	92
PID 4904 wrote to memory of 480	4904	hesaphareketi-001.exe	92
PID 480 wrote to memory of 3716	480	hesaphareketi-001.exe	93
PID 480 wrote to memory of 3716	480	hesaphareketi-001.exe	93
PID 480 wrote to memory of 3716	480	hesaphareketi-001.exe	93
PID 480 wrote to memory of 3716	480	hesaphareketi-001.exe	93
PID 480 wrote to memory of 3716	480	hesaphareketi-001.exe	93

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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4904
- 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:1636
- C:\Users\Admin\AppData\Local\Temp\hesaphareketi-001.exe
  C:\Users\Admin\AppData\Local\Temp\hesaphareketi-001.exe
  2⤵
  PID:1376
- 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:480
- - 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:3716

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/480-152-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/480-146-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/480-144-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1636-136-0x0000000005A60000-0x0000000006088000-memory.dmp

Filesize
6.2MB

Download
memory/1636-138-0x00000000062C0000-0x0000000006326000-memory.dmp

Filesize
408KB

Download
memory/1636-139-0x00000000068F0000-0x000000000690E000-memory.dmp

Filesize
120KB

Download
memory/1636-140-0x0000000007F60000-0x00000000085DA000-memory.dmp

Filesize
6.5MB

Download
memory/1636-141-0x0000000006DE0000-0x0000000006DFA000-memory.dmp

Filesize
104KB

Download
memory/1636-137-0x00000000059D0000-0x0000000005A36000-memory.dmp

Filesize
408KB

Download
memory/1636-135-0x0000000005340000-0x0000000005376000-memory.dmp

Filesize
216KB

Download
memory/3716-150-0x0000000000FE0000-0x0000000000FFA000-memory.dmp

Filesize
104KB

Download
memory/3716-151-0x0000000005FC0000-0x000000000605C000-memory.dmp

Filesize
624KB

Download
memory/4904-132-0x00000000002D0000-0x00000000002F0000-memory.dmp

Filesize
128KB

Download
memory/4904-133-0x0000000006C80000-0x0000000006CA2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads