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 1 IoCs

resource	yara_rule
behavioral2/memory/2692-161-0x0000000000750000-0x000000000076A000-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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	Halkbank_Ekstre_20220901_060735_484554.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\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
60	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2284 set thread context of 4916	2284	Halkbank_Ekstre_20220901_060735_484554.exe	99
PID 4916 set thread context of 2692	4916	Halkbank_Ekstre_20220901_060735_484554.exe	100

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
3184	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2284	Halkbank_Ekstre_20220901_060735_484554.exe
2284	Halkbank_Ekstre_20220901_060735_484554.exe
2284	Halkbank_Ekstre_20220901_060735_484554.exe
2284	Halkbank_Ekstre_20220901_060735_484554.exe
4340	powershell.exe
4340	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2284	Halkbank_Ekstre_20220901_060735_484554.exe
Token: SeDebugPrivilege	4340	powershell.exe
Token: SeDebugPrivilege	2692	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4916	Halkbank_Ekstre_20220901_060735_484554.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2284 wrote to memory of 4340	2284	Halkbank_Ekstre_20220901_060735_484554.exe	95
PID 2284 wrote to memory of 4340	2284	Halkbank_Ekstre_20220901_060735_484554.exe	95
PID 2284 wrote to memory of 4340	2284	Halkbank_Ekstre_20220901_060735_484554.exe	95
PID 2284 wrote to memory of 3184	2284	Halkbank_Ekstre_20220901_060735_484554.exe	97
PID 2284 wrote to memory of 3184	2284	Halkbank_Ekstre_20220901_060735_484554.exe	97
PID 2284 wrote to memory of 3184	2284	Halkbank_Ekstre_20220901_060735_484554.exe	97
PID 2284 wrote to memory of 4916	2284	Halkbank_Ekstre_20220901_060735_484554.exe	99
PID 2284 wrote to memory of 4916	2284	Halkbank_Ekstre_20220901_060735_484554.exe	99
PID 2284 wrote to memory of 4916	2284	Halkbank_Ekstre_20220901_060735_484554.exe	99
PID 2284 wrote to memory of 4916	2284	Halkbank_Ekstre_20220901_060735_484554.exe	99
PID 2284 wrote to memory of 4916	2284	Halkbank_Ekstre_20220901_060735_484554.exe	99
PID 2284 wrote to memory of 4916	2284	Halkbank_Ekstre_20220901_060735_484554.exe	99
PID 2284 wrote to memory of 4916	2284	Halkbank_Ekstre_20220901_060735_484554.exe	99
PID 2284 wrote to memory of 4916	2284	Halkbank_Ekstre_20220901_060735_484554.exe	99
PID 4916 wrote to memory of 2692	4916	Halkbank_Ekstre_20220901_060735_484554.exe	100
PID 4916 wrote to memory of 2692	4916	Halkbank_Ekstre_20220901_060735_484554.exe	100
PID 4916 wrote to memory of 2692	4916	Halkbank_Ekstre_20220901_060735_484554.exe	100
PID 4916 wrote to memory of 2692	4916	Halkbank_Ekstre_20220901_060735_484554.exe	100
PID 4916 wrote to memory of 2692	4916	Halkbank_Ekstre_20220901_060735_484554.exe	100

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\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⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2284
- 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:4340
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vFDcoe" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3459.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3184
- 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:4916
- - 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:2692

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\tmp3459.tmp

Filesize
1KB

MD5
2f6a15b7a95983aa121dc4f469a4cac7

SHA1
f6355b055022ebba78f6277b17ff039bc89c4286

SHA256
4e7005709e946d253c688c9c1124a1954e33ebb783e49247d19b08c4f9851646

SHA512
e1b998ff71a9d77a878ea8dd386ebfed8c1c9070f14434c45da6aa25d0cdd000c34a330f125357ff1adc206232a55f3ba49205361306328a3898a8f0edccfe4e

Download Submit
memory/2284-132-0x00000000009A0000-0x0000000000A88000-memory.dmp

Filesize
928KB

Download
memory/2284-133-0x00000000059D0000-0x0000000005F74000-memory.dmp

Filesize
5.6MB

Download
memory/2284-134-0x00000000054C0000-0x0000000005552000-memory.dmp

Filesize
584KB

Download
memory/2284-135-0x0000000005440000-0x000000000544A000-memory.dmp

Filesize
40KB

Download
memory/2284-136-0x0000000007620000-0x00000000076BC000-memory.dmp

Filesize
624KB

Download
memory/2284-137-0x0000000008F60000-0x0000000008FC6000-memory.dmp

Filesize
408KB

Download
memory/2692-161-0x0000000000750000-0x000000000076A000-memory.dmp

Filesize
104KB

Download
memory/4340-156-0x00000000076B0000-0x0000000007D2A000-memory.dmp

Filesize
6.5MB

Download
memory/4340-164-0x0000000007380000-0x0000000007388000-memory.dmp

Filesize
32KB

Download
memory/4340-146-0x0000000004DB0000-0x0000000004DD2000-memory.dmp

Filesize
136KB

Download
memory/4340-163-0x00000000073A0000-0x00000000073BA000-memory.dmp

Filesize
104KB

Download
memory/4340-148-0x00000000055D0000-0x0000000005636000-memory.dmp

Filesize
408KB

Download
memory/4340-162-0x0000000007290000-0x000000000729E000-memory.dmp

Filesize
56KB

Download
memory/4340-152-0x0000000005D60000-0x0000000005D7E000-memory.dmp

Filesize
120KB

Download
memory/4340-153-0x0000000006330000-0x0000000006362000-memory.dmp

Filesize
200KB

Download
memory/4340-154-0x00000000715D0000-0x000000007161C000-memory.dmp

Filesize
304KB

Download
memory/4340-155-0x00000000062B0000-0x00000000062CE000-memory.dmp

Filesize
120KB

Download
memory/4340-142-0x0000000004EA0000-0x00000000054C8000-memory.dmp

Filesize
6.2MB

Download
memory/4340-157-0x0000000007060000-0x000000000707A000-memory.dmp

Filesize
104KB

Download
memory/4340-158-0x00000000070D0000-0x00000000070DA000-memory.dmp

Filesize
40KB

Download
memory/4340-159-0x00000000072E0000-0x0000000007376000-memory.dmp

Filesize
600KB

Download
memory/4340-140-0x0000000002440000-0x0000000002476000-memory.dmp

Filesize
216KB

Download
memory/4916-151-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4916-147-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4916-144-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4916-165-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads