blustealer | 46e9dd942a0ac14a2d73e9058997275cd3cbdb024fded3598f9970c98b31becf

General

Target

account.exe
Size

834KB
MD5

ed087331c9c97859d6d30bca5245b42d
SHA1

6f1f422171174486c9de328041a0606273b763aa
SHA256

15af08408332677507425dd21c6e04fa469e1129c21dc9ae2d830cc5c8aa0642
SHA512

336290c2b7b578fd9022b8d2b5708f27be6e56a8ac2cdcc2369a705896ad00a6920c76d295f24715c3063de4e71e7829cccd80a1c63558dc662b7544522daf0a
SSDEEP

12288:nF75eRgPwqoXY+mzoRtbvRT7PJ7Na+6ZmvatTu7Fm8gAxYS6L9ETD:nZ5wXY+mzo3bv/Ra+CmiRusyYD

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5402813712:AAG__8vfwqo_1K9XHIpxzTR9T7UW4raysO4/sendMessage?chat_id=5034680713

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/3360-156-0x0000000000910000-0x000000000092A000-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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	account.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\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
57	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3584 set thread context of 1860	3584	account.exe	97
PID 1860 set thread context of 3360	1860	account.exe	98

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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	AppLaunch.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	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
1044	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3584	account.exe
3584	account.exe
992	powershell.exe
992	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3584	account.exe
Token: SeDebugPrivilege	992	powershell.exe
Token: SeDebugPrivilege	3360	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1860	account.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 3584 wrote to memory of 992	3584	account.exe	92
PID 3584 wrote to memory of 992	3584	account.exe	92
PID 3584 wrote to memory of 992	3584	account.exe	92
PID 3584 wrote to memory of 1044	3584	account.exe	94
PID 3584 wrote to memory of 1044	3584	account.exe	94
PID 3584 wrote to memory of 1044	3584	account.exe	94
PID 3584 wrote to memory of 712	3584	account.exe	96
PID 3584 wrote to memory of 712	3584	account.exe	96
PID 3584 wrote to memory of 712	3584	account.exe	96
PID 3584 wrote to memory of 1860	3584	account.exe	97
PID 3584 wrote to memory of 1860	3584	account.exe	97
PID 3584 wrote to memory of 1860	3584	account.exe	97
PID 3584 wrote to memory of 1860	3584	account.exe	97
PID 3584 wrote to memory of 1860	3584	account.exe	97
PID 3584 wrote to memory of 1860	3584	account.exe	97
PID 3584 wrote to memory of 1860	3584	account.exe	97
PID 3584 wrote to memory of 1860	3584	account.exe	97
PID 1860 wrote to memory of 3360	1860	account.exe	98
PID 1860 wrote to memory of 3360	1860	account.exe	98
PID 1860 wrote to memory of 3360	1860	account.exe	98
PID 1860 wrote to memory of 3360	1860	account.exe	98
PID 1860 wrote to memory of 3360	1860	account.exe	98

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\account.exe
"C:\Users\Admin\AppData\Local\Temp\account.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3584
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QSBpOi.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:992
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QSBpOi" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDE1B.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1044
- C:\Users\Admin\AppData\Local\Temp\account.exe
  "C:\Users\Admin\AppData\Local\Temp\account.exe"
  2⤵
  PID:712
- C:\Users\Admin\AppData\Local\Temp\account.exe
  "C:\Users\Admin\AppData\Local\Temp\account.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1860
- - 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:3360

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\tmpDE1B.tmp

Filesize
1KB

MD5
a789704e28ddf2b5d51dd0aafa23cb78

SHA1
c003378c122a090f552d4c136f54590882b5e9ee

SHA256
0c5bbbe73519851989ea2ddb959c03eaeec07b96863f4839ab64df771c28e0e0

SHA512
b9455959501aba7d09c7455da920ba59ef7298c416a9ca785d33f8ff07dc40107c6ef7db8cf65c31545e83f6477b7034055941438fb2d793133d62e32bead17b

Download Submit
memory/992-159-0x00000000705E0000-0x000000007062C000-memory.dmp

Filesize
304KB

Download
memory/992-163-0x00000000073D0000-0x00000000073DA000-memory.dmp

Filesize
40KB

Download
memory/992-167-0x00000000075F0000-0x00000000075F8000-memory.dmp

Filesize
32KB

Download
memory/992-166-0x00000000076A0000-0x00000000076BA000-memory.dmp

Filesize
104KB

Download
memory/992-161-0x00000000079D0000-0x000000000804A000-memory.dmp

Filesize
6.5MB

Download
memory/992-158-0x0000000007010000-0x0000000007042000-memory.dmp

Filesize
200KB

Download
memory/992-143-0x00000000026F0000-0x0000000002726000-memory.dmp

Filesize
216KB

Download
memory/992-150-0x0000000005020000-0x0000000005042000-memory.dmp

Filesize
136KB

Download
memory/992-146-0x0000000005180000-0x00000000057A8000-memory.dmp

Filesize
6.2MB

Download
memory/992-165-0x00000000075B0000-0x00000000075BE000-memory.dmp

Filesize
56KB

Download
memory/992-160-0x0000000006FF0000-0x000000000700E000-memory.dmp

Filesize
120KB

Download
memory/992-162-0x0000000006570000-0x000000000658A000-memory.dmp

Filesize
104KB

Download
memory/992-164-0x0000000007600000-0x0000000007696000-memory.dmp

Filesize
600KB

Download
memory/992-157-0x00000000058F0000-0x000000000590E000-memory.dmp

Filesize
120KB

Download
memory/992-151-0x00000000050C0000-0x0000000005126000-memory.dmp

Filesize
408KB

Download
memory/1860-148-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1860-152-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/3360-156-0x0000000000910000-0x000000000092A000-memory.dmp

Filesize
104KB

Download
memory/3584-137-0x0000000005A10000-0x0000000005AA2000-memory.dmp

Filesize
584KB

Download
memory/3584-135-0x0000000000F10000-0x0000000000FE8000-memory.dmp

Filesize
864KB

Download
memory/3584-138-0x00000000059A0000-0x00000000059AA000-memory.dmp

Filesize
40KB

Download
memory/3584-136-0x0000000005F20000-0x00000000064C4000-memory.dmp

Filesize
5.6MB

Download
memory/3584-140-0x0000000009480000-0x00000000094E6000-memory.dmp

Filesize
408KB

Download
memory/3584-139-0x0000000009270000-0x000000000930C000-memory.dmp

Filesize
624KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads