blustealer | e062710d9f3f47ef33753d6fb236352da9bca3857dfbb94980d86f3843abec09

Analysis

max time kernel
144s
max time network
135s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
29/03/2023, 01:50

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General

Target

5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe
Size

1.1MB
MD5

ec7c37ae9c0377f3240a274290c9c214
SHA1

432915cb9e9e860a84e142719bf0e82392c69a6a
SHA256

5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f
SHA512

326f282eb2a8c6f79de6f7019fc7d16be88345467301bc1d28c36f5c7094ac38ec206dc068d24c8bcecd0cb02e39af1d5070f839f9518f0e8e149ac5c5c0c576
SSDEEP

24576:KZUu39V1vMSb4gz1o5Ti81zSdyrjLDjFPR6KrXmTDa:yltsSkW1o5Tiouy/z6KrXmX

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

https://api.telegram.org/bot5916787654:AAEJEadEk6VSBHL82vTGRS9aaNuh-zG53Rg/sendMessage?chat_id=5483672364

Signatures

BluStealer
A Modular information stealer written in Visual Basic.
stealer blustealer

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-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3220 set thread context of 1608	3220	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	97
PID 1608 set thread context of 1904	1608	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	98

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

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
2484	schtasks.exe

Script User-Agent 1 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	35	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3820	powershell.exe
1284	powershell.exe
1284	powershell.exe
3820	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3820	powershell.exe
Token: SeDebugPrivilege	1284	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1608	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 3220 wrote to memory of 3820	3220	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	91
PID 3220 wrote to memory of 3820	3220	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	91
PID 3220 wrote to memory of 3820	3220	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	91
PID 3220 wrote to memory of 1284	3220	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	93
PID 3220 wrote to memory of 1284	3220	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	93
PID 3220 wrote to memory of 1284	3220	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	93
PID 3220 wrote to memory of 2484	3220	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	95
PID 3220 wrote to memory of 2484	3220	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	95
PID 3220 wrote to memory of 2484	3220	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	95
PID 3220 wrote to memory of 1608	3220	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	97
PID 3220 wrote to memory of 1608	3220	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	97
PID 3220 wrote to memory of 1608	3220	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	97
PID 3220 wrote to memory of 1608	3220	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	97
PID 3220 wrote to memory of 1608	3220	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	97
PID 3220 wrote to memory of 1608	3220	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	97
PID 3220 wrote to memory of 1608	3220	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	97
PID 3220 wrote to memory of 1608	3220	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	97
PID 1608 wrote to memory of 1904	1608	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	98
PID 1608 wrote to memory of 1904	1608	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	98
PID 1608 wrote to memory of 1904	1608	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	98
PID 1608 wrote to memory of 1904	1608	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	98
PID 1608 wrote to memory of 1904	1608	5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe	98

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe
"C:\Users\Admin\AppData\Local\Temp\5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3220
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3820
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QrErGuxRXcieO.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1284
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QrErGuxRXcieO" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD1A8.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2484
- C:\Users\Admin\AppData\Local\Temp\5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe
  "C:\Users\Admin\AppData\Local\Temp\5c11c170ecb5809594f68e860f910f6d004e356d067be232c3c856c9ed78459f.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1608
- - 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
    - outlook_office_path
    - outlook_win_path
    PID:1904

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
236ddb92456f45b2bfb5bfe171f21dd9

SHA1
e3945b285b6edc53c576220fa2c3997b593d3ac1

SHA256
674f9a7248b0e9d0f61f36a7e018ca1803e4435c5a32eb71934e48da4107f5bb

SHA512
8c1d2ccf5e8a7625bfd2548decbbcebcfac369aebb0b80e93d4f42b80cc86148e01e53c9e7bcc8795adfee200885e19c1394849a6a7bac789df10243c5498617

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_45cogf3j.4mj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpD1A8.tmp

Filesize
1KB

MD5
64fa64353ecf4a60b79da851f7ae8f1a

SHA1
d2d09b6eba7d728b0e970e36a9aea7fd8b3f783e

SHA256
0f44664f0eaf45d95f4917e53db395a43e47295f0a46933803b404eabc2803a7

SHA512
5a3dcda672aa3cb83c4ecc609b97eee24947e576c3b030d6c68ab0ee9097465ac1dcf294f6759b22168041c99daf329b0d65986039a29c17bd6c94f7d800fe32

Download Submit
memory/1284-145-0x00000000053F0000-0x0000000005A18000-memory.dmp

Filesize
6.2MB

Download
memory/1284-211-0x0000000007820000-0x00000000078B6000-memory.dmp

Filesize
600KB

Download
memory/1284-181-0x0000000004DB0000-0x0000000004DC0000-memory.dmp

Filesize
64KB

Download
memory/1284-205-0x000000007F3B0000-0x000000007F3C0000-memory.dmp

Filesize
64KB

Download
memory/1284-162-0x0000000004DB0000-0x0000000004DC0000-memory.dmp

Filesize
64KB

Download
memory/1284-182-0x0000000007240000-0x0000000007272000-memory.dmp

Filesize
200KB

Download
memory/1284-178-0x0000000006290000-0x00000000062AE000-memory.dmp

Filesize
120KB

Download
memory/1284-209-0x0000000007610000-0x000000000761A000-memory.dmp

Filesize
40KB

Download
memory/1284-150-0x0000000005360000-0x00000000053C6000-memory.dmp

Filesize
408KB

Download
memory/1284-184-0x00000000708A0000-0x00000000708EC000-memory.dmp

Filesize
304KB

Download
memory/1284-155-0x0000000004DB0000-0x0000000004DC0000-memory.dmp

Filesize
64KB

Download
memory/1284-206-0x0000000007BE0000-0x000000000825A000-memory.dmp

Filesize
6.5MB

Download
memory/1284-212-0x00000000077D0000-0x00000000077DE000-memory.dmp

Filesize
56KB

Download
memory/1608-221-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1608-156-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1608-148-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1608-179-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1904-208-0x0000000001300000-0x0000000001366000-memory.dmp

Filesize
408KB

Download
memory/3220-133-0x0000000000FA0000-0x00000000010B4000-memory.dmp

Filesize
1.1MB

Download
memory/3220-139-0x0000000008B00000-0x0000000008B9C000-memory.dmp

Filesize
624KB

Download
memory/3220-138-0x0000000005D30000-0x0000000005D40000-memory.dmp

Filesize
64KB

Download
memory/3220-137-0x0000000005D30000-0x0000000005D40000-memory.dmp

Filesize
64KB

Download
memory/3220-136-0x0000000005A70000-0x0000000005A7A000-memory.dmp

Filesize
40KB

Download
memory/3220-135-0x0000000005AA0000-0x0000000005B32000-memory.dmp

Filesize
584KB

Download
memory/3220-134-0x0000000006050000-0x00000000065F4000-memory.dmp

Filesize
5.6MB

Download
memory/3820-147-0x0000000005210000-0x0000000005232000-memory.dmp

Filesize
136KB

Download
memory/3820-207-0x00000000075E0000-0x00000000075FA000-memory.dmp

Filesize
104KB

Download
memory/3820-204-0x000000007F710000-0x000000007F720000-memory.dmp

Filesize
64KB

Download
memory/3820-194-0x00000000068A0000-0x00000000068BE000-memory.dmp

Filesize
120KB

Download
memory/3820-183-0x00000000708A0000-0x00000000708EC000-memory.dmp

Filesize
304KB

Download
memory/3820-180-0x0000000002AC0000-0x0000000002AD0000-memory.dmp

Filesize
64KB

Download
memory/3820-151-0x0000000002AC0000-0x0000000002AD0000-memory.dmp

Filesize
64KB

Download
memory/3820-213-0x0000000007920000-0x000000000793A000-memory.dmp

Filesize
104KB

Download
memory/3820-214-0x0000000007900000-0x0000000007908000-memory.dmp

Filesize
32KB

Download
memory/3820-154-0x0000000002AC0000-0x0000000002AD0000-memory.dmp

Filesize
64KB

Download
memory/3820-153-0x0000000005B30000-0x0000000005B96000-memory.dmp

Filesize
408KB

Download
memory/3820-144-0x00000000029D0000-0x0000000002A06000-memory.dmp

Filesize
216KB

Download