blustealer | 5496c892434815b96f2e87625ea81ee5fd67af10a3416f84d1cf74da03d23b02

General

Target

41570002689_20221003_05352297_HesapOzeti.exe
Size

986KB
MD5

105955bc97408324ae104395d1f027bf
SHA1

a9b8d839c3f4d2c4cd20831127ae1d5b02ff8664
SHA256

5496c892434815b96f2e87625ea81ee5fd67af10a3416f84d1cf74da03d23b02
SHA512

2ad552ad8272aea0161d0a212925e9fc9cbbb690cfb701bb332525cf1150c92344c355a2dc7fab9931338e5110295f31f520cdbf57ec390e24f4aec50be14d37
SSDEEP

12288:FnJSxRRBR7yXKBs8ypLpeYqktgNeBwyPX2c00QEhWT5MWwtr4veUCyK+zWkv:zwWXKBs5dQYqktE87/2cVQLFwR4veU

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/4308-161-0x0000000000BC0000-0x0000000000BDA000-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_20221003_05352297_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\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
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\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
37	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3412 set thread context of 2736	3412	41570002689_20221003_05352297_HesapOzeti.exe	98
PID 2736 set thread context of 4308	2736	41570002689_20221003_05352297_HesapOzeti.exe	99

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
1384	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3412	41570002689_20221003_05352297_HesapOzeti.exe
3412	41570002689_20221003_05352297_HesapOzeti.exe
3412	41570002689_20221003_05352297_HesapOzeti.exe
3412	41570002689_20221003_05352297_HesapOzeti.exe
3412	41570002689_20221003_05352297_HesapOzeti.exe
3412	41570002689_20221003_05352297_HesapOzeti.exe
3412	41570002689_20221003_05352297_HesapOzeti.exe
3928	powershell.exe
3928	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2736	41570002689_20221003_05352297_HesapOzeti.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3412	41570002689_20221003_05352297_HesapOzeti.exe
Token: SeDebugPrivilege	3928	powershell.exe
Token: SeDebugPrivilege	4308	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2736	41570002689_20221003_05352297_HesapOzeti.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 3412 wrote to memory of 3928	3412	41570002689_20221003_05352297_HesapOzeti.exe	93
PID 3412 wrote to memory of 3928	3412	41570002689_20221003_05352297_HesapOzeti.exe	93
PID 3412 wrote to memory of 3928	3412	41570002689_20221003_05352297_HesapOzeti.exe	93
PID 3412 wrote to memory of 1384	3412	41570002689_20221003_05352297_HesapOzeti.exe	95
PID 3412 wrote to memory of 1384	3412	41570002689_20221003_05352297_HesapOzeti.exe	95
PID 3412 wrote to memory of 1384	3412	41570002689_20221003_05352297_HesapOzeti.exe	95
PID 3412 wrote to memory of 3496	3412	41570002689_20221003_05352297_HesapOzeti.exe	97
PID 3412 wrote to memory of 3496	3412	41570002689_20221003_05352297_HesapOzeti.exe	97
PID 3412 wrote to memory of 3496	3412	41570002689_20221003_05352297_HesapOzeti.exe	97
PID 3412 wrote to memory of 2736	3412	41570002689_20221003_05352297_HesapOzeti.exe	98
PID 3412 wrote to memory of 2736	3412	41570002689_20221003_05352297_HesapOzeti.exe	98
PID 3412 wrote to memory of 2736	3412	41570002689_20221003_05352297_HesapOzeti.exe	98
PID 3412 wrote to memory of 2736	3412	41570002689_20221003_05352297_HesapOzeti.exe	98
PID 3412 wrote to memory of 2736	3412	41570002689_20221003_05352297_HesapOzeti.exe	98
PID 3412 wrote to memory of 2736	3412	41570002689_20221003_05352297_HesapOzeti.exe	98
PID 3412 wrote to memory of 2736	3412	41570002689_20221003_05352297_HesapOzeti.exe	98
PID 3412 wrote to memory of 2736	3412	41570002689_20221003_05352297_HesapOzeti.exe	98
PID 2736 wrote to memory of 4308	2736	41570002689_20221003_05352297_HesapOzeti.exe	99
PID 2736 wrote to memory of 4308	2736	41570002689_20221003_05352297_HesapOzeti.exe	99
PID 2736 wrote to memory of 4308	2736	41570002689_20221003_05352297_HesapOzeti.exe	99
PID 2736 wrote to memory of 4308	2736	41570002689_20221003_05352297_HesapOzeti.exe	99
PID 2736 wrote to memory of 4308	2736	41570002689_20221003_05352297_HesapOzeti.exe	99

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_20221003_05352297_HesapOzeti.exe
"C:\Users\Admin\AppData\Local\Temp\ 41570002689_20221003_05352297_HesapOzeti.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3412
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\bTCHuL.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3928
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bTCHuL" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9A8A.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1384
- C:\Users\Admin\AppData\Local\Temp\ 41570002689_20221003_05352297_HesapOzeti.exe
  "C:\Users\Admin\AppData\Local\Temp\ 41570002689_20221003_05352297_HesapOzeti.exe"
  2⤵
  PID:3496
- C:\Users\Admin\AppData\Local\Temp\ 41570002689_20221003_05352297_HesapOzeti.exe
  "C:\Users\Admin\AppData\Local\Temp\ 41570002689_20221003_05352297_HesapOzeti.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2736
- - 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:4308

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\tmp9A8A.tmp

Filesize
1KB

MD5
512af9bb2df85495d9b6e4de3140f096

SHA1
53c4bebe89b5a60081f7fef9e282d4ab9e566566

SHA256
ed3de85569bdd75e2e4c952769ec9d89608d2c5c3633fd1ffbc8d2ca45307d18

SHA512
f42489ae907b7021ffffa7bb11ae6228a7be2bc354d2272014523cf329b5bb7d41d3a229e17edc0218c5db93cb8ea0f7c0d152459f603fd6172da74df5be7901

Download Submit
memory/2736-166-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2736-147-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2736-151-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2736-145-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3412-135-0x0000000007650000-0x000000000765A000-memory.dmp

Filesize
40KB

Download
memory/3412-136-0x000000000B010000-0x000000000B0AC000-memory.dmp

Filesize
624KB

Download
memory/3412-137-0x000000000B320000-0x000000000B386000-memory.dmp

Filesize
408KB

Download
memory/3412-134-0x00000000076A0000-0x0000000007732000-memory.dmp

Filesize
584KB

Download
memory/3412-132-0x00000000006F0000-0x00000000007EC000-memory.dmp

Filesize
1008KB

Download
memory/3412-133-0x0000000007B70000-0x0000000008114000-memory.dmp

Filesize
5.6MB

Download
memory/3928-150-0x0000000005900000-0x0000000005922000-memory.dmp

Filesize
136KB

Download
memory/3928-158-0x0000000007AD0000-0x0000000007AEA000-memory.dmp

Filesize
104KB

Download
memory/3928-140-0x0000000005220000-0x0000000005256000-memory.dmp

Filesize
216KB

Download
memory/3928-152-0x0000000006100000-0x0000000006166000-memory.dmp

Filesize
408KB

Download
memory/3928-153-0x00000000067D0000-0x00000000067EE000-memory.dmp

Filesize
120KB

Download
memory/3928-154-0x0000000006D90000-0x0000000006DC2000-memory.dmp

Filesize
200KB

Download
memory/3928-155-0x0000000070D90000-0x0000000070DDC000-memory.dmp

Filesize
304KB

Download
memory/3928-156-0x0000000006D70000-0x0000000006D8E000-memory.dmp

Filesize
120KB

Download
memory/3928-157-0x0000000008110000-0x000000000878A000-memory.dmp

Filesize
6.5MB

Download
memory/3928-143-0x0000000005970000-0x0000000005F98000-memory.dmp

Filesize
6.2MB

Download
memory/3928-159-0x0000000007B40000-0x0000000007B4A000-memory.dmp

Filesize
40KB

Download
memory/3928-162-0x0000000007D50000-0x0000000007DE6000-memory.dmp

Filesize
600KB

Download
memory/3928-165-0x0000000007DF0000-0x0000000007DF8000-memory.dmp

Filesize
32KB

Download
memory/3928-163-0x0000000007D00000-0x0000000007D0E000-memory.dmp

Filesize
56KB

Download
memory/3928-164-0x0000000007E10000-0x0000000007E2A000-memory.dmp

Filesize
104KB

Download
memory/4308-161-0x0000000000BC0000-0x0000000000BDA000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads