blustealer | 3e2842c40ff26c60b69e08934b9b80fefe0cd2d091fbd6fa91a2b97f3487137c

General

Target

Halkbank_Ekstre_20220901_060735_484554.exe
Size

900KB
MD5

f53d6a0d4693488835b412fb558a75d3
SHA1

802139308484ab4905f5af9b40f17d01568a9790
SHA256

3e2842c40ff26c60b69e08934b9b80fefe0cd2d091fbd6fa91a2b97f3487137c
SHA512

561d6b80db0deca56af17f3debf422d7cfbe867629b000a0e5a232de2a1f296b2e355549edbb10866939e7ace619331919069ad54bc552b1585d4f9788d1febb
SSDEEP

24576:3Z5sXY+mzo3bvQhPGbuYKeS0eVIUdJyh:J5qlmzMIlGan0eD3C

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

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 4 IoCs

resource	yara_rule
behavioral1/memory/1556-78-0x00000000000D0000-0x00000000000EA000-memory.dmp	family_stormkitty
behavioral1/memory/1556-79-0x00000000000E4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/1556-83-0x00000000000D0000-0x00000000000EA000-memory.dmp	family_stormkitty
behavioral1/memory/1556-81-0x00000000000D0000-0x00000000000EA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\15.0\Outlook\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
4	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1976 set thread context of 1052	1976	Halkbank_Ekstre_20220901_060735_484554.exe	32
PID 1052 set thread context of 1556	1052	Halkbank_Ekstre_20220901_060735_484554.exe	33

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
2032	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1976	Halkbank_Ekstre_20220901_060735_484554.exe
1976	Halkbank_Ekstre_20220901_060735_484554.exe
1976	Halkbank_Ekstre_20220901_060735_484554.exe
2044	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1976	Halkbank_Ekstre_20220901_060735_484554.exe
Token: SeDebugPrivilege	2044	powershell.exe
Token: SeDebugPrivilege	1556	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1052	Halkbank_Ekstre_20220901_060735_484554.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1976 wrote to memory of 2044	1976	Halkbank_Ekstre_20220901_060735_484554.exe	28
PID 1976 wrote to memory of 2044	1976	Halkbank_Ekstre_20220901_060735_484554.exe	28
PID 1976 wrote to memory of 2044	1976	Halkbank_Ekstre_20220901_060735_484554.exe	28
PID 1976 wrote to memory of 2044	1976	Halkbank_Ekstre_20220901_060735_484554.exe	28
PID 1976 wrote to memory of 2032	1976	Halkbank_Ekstre_20220901_060735_484554.exe	30
PID 1976 wrote to memory of 2032	1976	Halkbank_Ekstre_20220901_060735_484554.exe	30
PID 1976 wrote to memory of 2032	1976	Halkbank_Ekstre_20220901_060735_484554.exe	30
PID 1976 wrote to memory of 2032	1976	Halkbank_Ekstre_20220901_060735_484554.exe	30
PID 1976 wrote to memory of 1052	1976	Halkbank_Ekstre_20220901_060735_484554.exe	32
PID 1976 wrote to memory of 1052	1976	Halkbank_Ekstre_20220901_060735_484554.exe	32
PID 1976 wrote to memory of 1052	1976	Halkbank_Ekstre_20220901_060735_484554.exe	32
PID 1976 wrote to memory of 1052	1976	Halkbank_Ekstre_20220901_060735_484554.exe	32
PID 1976 wrote to memory of 1052	1976	Halkbank_Ekstre_20220901_060735_484554.exe	32
PID 1976 wrote to memory of 1052	1976	Halkbank_Ekstre_20220901_060735_484554.exe	32
PID 1976 wrote to memory of 1052	1976	Halkbank_Ekstre_20220901_060735_484554.exe	32
PID 1976 wrote to memory of 1052	1976	Halkbank_Ekstre_20220901_060735_484554.exe	32
PID 1976 wrote to memory of 1052	1976	Halkbank_Ekstre_20220901_060735_484554.exe	32
PID 1052 wrote to memory of 1556	1052	Halkbank_Ekstre_20220901_060735_484554.exe	33
PID 1052 wrote to memory of 1556	1052	Halkbank_Ekstre_20220901_060735_484554.exe	33
PID 1052 wrote to memory of 1556	1052	Halkbank_Ekstre_20220901_060735_484554.exe	33
PID 1052 wrote to memory of 1556	1052	Halkbank_Ekstre_20220901_060735_484554.exe	33
PID 1052 wrote to memory of 1556	1052	Halkbank_Ekstre_20220901_060735_484554.exe	33
PID 1052 wrote to memory of 1556	1052	Halkbank_Ekstre_20220901_060735_484554.exe	33
PID 1052 wrote to memory of 1556	1052	Halkbank_Ekstre_20220901_060735_484554.exe	33
PID 1052 wrote to memory of 1556	1052	Halkbank_Ekstre_20220901_060735_484554.exe	33
PID 1052 wrote to memory of 1556	1052	Halkbank_Ekstre_20220901_060735_484554.exe	33

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20220901_060735_484554.exe
"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20220901_060735_484554.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\vFDcoe.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2044
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vFDcoe" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAD7F.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2032
- C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20220901_060735_484554.exe
  "C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20220901_060735_484554.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1052
- - 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:1556

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

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpAD7F.tmp

Filesize
1KB

MD5
37f47457da2bf50daaa3e4d3b390f5f4

SHA1
b6522cfa616c3f8451c348fa9334d83b3b1a63dc

SHA256
100c066a0a057ca40818eaa0dc873426a6a427257b0af1ab821bfad9d0061d17

SHA512
576cf2b35f85ad194f91466b19aa884eb8b494aaabb960116e7de847409aa32e0d21af5f6c5e28b12346979f32b133e2a0323525415091fe170330b3349ec3f5

Download Submit
memory/1052-64-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1052-88-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1052-85-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1052-72-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1052-69-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1052-67-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1052-65-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1556-83-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/1556-81-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/1556-78-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/1556-76-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download
memory/1976-57-0x0000000000430000-0x000000000043C000-memory.dmp

Filesize
48KB

Download
memory/1976-58-0x0000000004D40000-0x0000000004DC0000-memory.dmp

Filesize
512KB

Download
memory/1976-54-0x0000000000F80000-0x0000000001068000-memory.dmp

Filesize
928KB

Download
memory/1976-63-0x0000000004DC0000-0x0000000004DE8000-memory.dmp

Filesize
160KB

Download
memory/1976-56-0x0000000000890000-0x00000000008A8000-memory.dmp

Filesize
96KB

Download
memory/1976-55-0x0000000076321000-0x0000000076323000-memory.dmp

Filesize
8KB

Download
memory/2044-86-0x000000006EA10000-0x000000006EFBB000-memory.dmp

Filesize
5.7MB

Download
memory/2044-87-0x000000006EA10000-0x000000006EFBB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads