blustealer | cd38bbc0668699fe1761de97d8dd736321a219e5cf99767bb1f0dd81a2c03bcc

General

Target

41570002689_20220922_05393480_HesapOzeti.exe
Size

868KB
MD5

da1eb258ebce6a56bb005da137e7ad39
SHA1

e7a80eac4bcc6fbc8e7781d0f62d6807edbf3baf
SHA256

cd38bbc0668699fe1761de97d8dd736321a219e5cf99767bb1f0dd81a2c03bcc
SHA512

93b6eda6f657df02208bda1e5980b1de35afea6e5f11a16fb0b621868b6bcd8d6bda04625c6f352f6935d85962458c3c2cbb2fa10f25be977eafcb6f2ab1d814
SSDEEP

12288:klDZQS57JF2fvAcxD9E0QaBNj6iumhTh9GwKuCpcVz+RfwWbjvNYugmv9uE6kfYy:aZt7v2fvdbhBNjthT6WJVQLjz

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5412597166:AAGUaWxuTxxhNb-NRhiURcTMzuW9nhGoEs/sendMessage?chat_id=932962718

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/2528-160-0x0000000000780000-0x000000000079A000-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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	41570002689_20220922_05393480_HesapOzeti.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\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
57	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4452 set thread context of 5112	4452	41570002689_20220922_05393480_HesapOzeti.exe	104
PID 5112 set thread context of 2528	5112	41570002689_20220922_05393480_HesapOzeti.exe	105

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
4540	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4632	powershell.exe
4632	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
5112	41570002689_20220922_05393480_HesapOzeti.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4632	powershell.exe
Token: SeDebugPrivilege	2528	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5112	41570002689_20220922_05393480_HesapOzeti.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4452 wrote to memory of 4632	4452	41570002689_20220922_05393480_HesapOzeti.exe	100
PID 4452 wrote to memory of 4632	4452	41570002689_20220922_05393480_HesapOzeti.exe	100
PID 4452 wrote to memory of 4632	4452	41570002689_20220922_05393480_HesapOzeti.exe	100
PID 4452 wrote to memory of 4540	4452	41570002689_20220922_05393480_HesapOzeti.exe	102
PID 4452 wrote to memory of 4540	4452	41570002689_20220922_05393480_HesapOzeti.exe	102
PID 4452 wrote to memory of 4540	4452	41570002689_20220922_05393480_HesapOzeti.exe	102
PID 4452 wrote to memory of 5112	4452	41570002689_20220922_05393480_HesapOzeti.exe	104
PID 4452 wrote to memory of 5112	4452	41570002689_20220922_05393480_HesapOzeti.exe	104
PID 4452 wrote to memory of 5112	4452	41570002689_20220922_05393480_HesapOzeti.exe	104
PID 4452 wrote to memory of 5112	4452	41570002689_20220922_05393480_HesapOzeti.exe	104
PID 4452 wrote to memory of 5112	4452	41570002689_20220922_05393480_HesapOzeti.exe	104
PID 4452 wrote to memory of 5112	4452	41570002689_20220922_05393480_HesapOzeti.exe	104
PID 4452 wrote to memory of 5112	4452	41570002689_20220922_05393480_HesapOzeti.exe	104
PID 4452 wrote to memory of 5112	4452	41570002689_20220922_05393480_HesapOzeti.exe	104
PID 5112 wrote to memory of 2528	5112	41570002689_20220922_05393480_HesapOzeti.exe	105
PID 5112 wrote to memory of 2528	5112	41570002689_20220922_05393480_HesapOzeti.exe	105
PID 5112 wrote to memory of 2528	5112	41570002689_20220922_05393480_HesapOzeti.exe	105
PID 5112 wrote to memory of 2528	5112	41570002689_20220922_05393480_HesapOzeti.exe	105
PID 5112 wrote to memory of 2528	5112	41570002689_20220922_05393480_HesapOzeti.exe	105

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\41570002689_20220922_05393480_HesapOzeti.exe
"C:\Users\Admin\AppData\Local\Temp\41570002689_20220922_05393480_HesapOzeti.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4452
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\kXeGkF.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4632
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kXeGkF" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDAFE.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4540
- C:\Users\Admin\AppData\Local\Temp\41570002689_20220922_05393480_HesapOzeti.exe
  "C:\Users\Admin\AppData\Local\Temp\41570002689_20220922_05393480_HesapOzeti.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5112
- - 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:2528

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\tmpDAFE.tmp

Filesize
1KB

MD5
73074ae69613b6b9050267d5f78bcc8c

SHA1
f8547cd63e939efa8a82de1af210db999c14cf36

SHA256
53896c0d47bb124e8cc2df52fd38717c14a338298f698f777c751d12f91e505a

SHA512
2423694be11c5f269c39e1821f24707d1d13ed10632dfaa5abfd6bb1b9236c35c1ef82d8492e61b6ad9be66e9f8917767eb1b24b3853cf6ee15db443dfd50cd6

Download Submit
memory/2528-160-0x0000000000780000-0x000000000079A000-memory.dmp

Filesize
104KB

Download
memory/4452-132-0x0000000000E30000-0x0000000000F0E000-memory.dmp

Filesize
888KB

Download
memory/4452-133-0x0000000005EA0000-0x0000000006444000-memory.dmp

Filesize
5.6MB

Download
memory/4452-134-0x00000000058F0000-0x0000000005982000-memory.dmp

Filesize
584KB

Download
memory/4452-135-0x0000000005890000-0x000000000589A000-memory.dmp

Filesize
40KB

Download
memory/4452-136-0x0000000007F40000-0x0000000007FDC000-memory.dmp

Filesize
624KB

Download
memory/4452-137-0x00000000018B0000-0x0000000001916000-memory.dmp

Filesize
408KB

Download
memory/4632-149-0x0000000005700000-0x0000000005722000-memory.dmp

Filesize
136KB

Download
memory/4632-161-0x0000000007B50000-0x0000000007BE6000-memory.dmp

Filesize
600KB

Download
memory/4632-164-0x0000000007BF0000-0x0000000007BF8000-memory.dmp

Filesize
32KB

Download
memory/4632-163-0x0000000007C10000-0x0000000007C2A000-memory.dmp

Filesize
104KB

Download
memory/4632-142-0x0000000005820000-0x0000000005E48000-memory.dmp

Filesize
6.2MB

Download
memory/4632-150-0x0000000005F00000-0x0000000005F66000-memory.dmp

Filesize
408KB

Download
memory/4632-162-0x0000000007B00000-0x0000000007B0E000-memory.dmp

Filesize
56KB

Download
memory/4632-152-0x00000000065D0000-0x00000000065EE000-memory.dmp

Filesize
120KB

Download
memory/4632-153-0x00000000075A0000-0x00000000075D2000-memory.dmp

Filesize
200KB

Download
memory/4632-154-0x0000000070830000-0x000000007087C000-memory.dmp

Filesize
304KB

Download
memory/4632-155-0x0000000006BA0000-0x0000000006BBE000-memory.dmp

Filesize
120KB

Download
memory/4632-156-0x0000000007F20000-0x000000000859A000-memory.dmp

Filesize
6.5MB

Download
memory/4632-157-0x00000000078D0000-0x00000000078EA000-memory.dmp

Filesize
104KB

Download
memory/4632-158-0x0000000007940000-0x000000000794A000-memory.dmp

Filesize
40KB

Download
memory/4632-140-0x0000000002C90000-0x0000000002CC6000-memory.dmp

Filesize
216KB

Download
memory/5112-144-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/5112-151-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/5112-146-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/5112-165-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads