blustealer | 0ad01103b440846337acabfd86925205e596de10409b80eeda2d640389ca43be

Analysis

max time kernel
147s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
23-07-2023 02:13

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General

Target

87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe
Size

1.2MB
MD5

c417498058dcc5982157432ff63d33e9
SHA1

a9909f37d3cef589e2086a5bb3dfc728596130f6
SHA256

87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06
SHA512

5e06e931c3e142aa0ec69452183a328595acb82009011e6bd702ccd2ed65bcfe075562a845e9f1aefadb74c2b731b3f84b684a116f1cf8bd20fd3b277d807844
SSDEEP

24576:pN6GEf47+UgcarQNkRq/mczfSrio0cXNf:D6hf47+OarDRgLfSF0iN

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

https://api.telegram.org/bot6120911772:AAEvnEDbWRlbIuD1NP8MtmiY3tQ46T9SQyo/sendMessage?chat_id=6082430866

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-1-5-21-618519468-4027732583-1827558364-1000\Control Panel\International\Geo\Nation	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-618519468-4027732583-1827558364-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-618519468-4027732583-1827558364-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-618519468-4027732583-1827558364-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 780 set thread context of 3796	780	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe	102
PID 3796 set thread context of 1252	3796	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe	103

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

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/Job

T1053

pid	Process
1920	schtasks.exe

Script User-Agent 1 IoCs

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

description	flow	ioc
HTTP User-Agent header	58	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3408	powershell.exe
3408	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3408	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3796	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 780 wrote to memory of 3408	780	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe	98
PID 780 wrote to memory of 3408	780	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe	98
PID 780 wrote to memory of 3408	780	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe	98
PID 780 wrote to memory of 1920	780	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe	100
PID 780 wrote to memory of 1920	780	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe	100
PID 780 wrote to memory of 1920	780	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe	100
PID 780 wrote to memory of 3796	780	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe	102
PID 780 wrote to memory of 3796	780	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe	102
PID 780 wrote to memory of 3796	780	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe	102
PID 780 wrote to memory of 3796	780	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe	102
PID 780 wrote to memory of 3796	780	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe	102
PID 780 wrote to memory of 3796	780	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe	102
PID 780 wrote to memory of 3796	780	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe	102
PID 780 wrote to memory of 3796	780	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe	102
PID 3796 wrote to memory of 1252	3796	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe	103
PID 3796 wrote to memory of 1252	3796	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe	103
PID 3796 wrote to memory of 1252	3796	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe	103
PID 3796 wrote to memory of 1252	3796	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe	103
PID 3796 wrote to memory of 1252	3796	87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe	103

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-618519468-4027732583-1827558364-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-618519468-4027732583-1827558364-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe
"C:\Users\Admin\AppData\Local\Temp\87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:780
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\XwWrHjBogFa.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3408
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\XwWrHjBogFa" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD49.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1920
- C:\Users\Admin\AppData\Local\Temp\87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe
  "C:\Users\Admin\AppData\Local\Temp\87832eaabe18c374549cc586c2dca63c84ff0792e88a80e85f6e452f0b22cf06.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3796
- - 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:1252

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

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\Temp\__PSScriptPolicyTest_uqru5buj.1rl.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpD49.tmp

Filesize
1KB

MD5
396ba62fc3ab58176b5f9da74c0fd714

SHA1
f02ca9d519e9bd0c38e07d1b4dee9a7e20ce008c

SHA256
318a94b2f0ae30c298d4056edd6c25b55aa5b86e97d3e4bc28fed12b826bbf0b

SHA512
582e19fee060cf8deb806fea14ad6452cf7ae926054d21398543bac027a0161d313e90e2233474f71e9fe049899bd8878b4b89a485d9a384ac98d7b999749bb4

Download Submit
memory/780-137-0x00000000057C0000-0x00000000057D0000-memory.dmp

Filesize
64KB

Download
memory/780-135-0x0000000005A80000-0x0000000006024000-memory.dmp

Filesize
5.6MB

Download
memory/780-162-0x00000000751E0000-0x0000000075990000-memory.dmp

Filesize
7.7MB

Download
memory/780-138-0x0000000005530000-0x000000000553A000-memory.dmp

Filesize
40KB

Download
memory/780-139-0x00000000751E0000-0x0000000075990000-memory.dmp

Filesize
7.7MB

Download
memory/780-140-0x00000000057C0000-0x00000000057D0000-memory.dmp

Filesize
64KB

Download
memory/780-141-0x0000000009540000-0x00000000095DC000-memory.dmp

Filesize
624KB

Download
memory/780-133-0x00000000751E0000-0x0000000075990000-memory.dmp

Filesize
7.7MB

Download
memory/780-134-0x0000000000A00000-0x0000000000B3E000-memory.dmp

Filesize
1.2MB

Download
memory/780-136-0x0000000005570000-0x0000000005602000-memory.dmp

Filesize
584KB

Download
memory/1252-191-0x00000000055B0000-0x00000000055C0000-memory.dmp

Filesize
64KB

Download
memory/1252-189-0x00000000751E0000-0x0000000075990000-memory.dmp

Filesize
7.7MB

Download
memory/1252-188-0x0000000000E40000-0x0000000000EA6000-memory.dmp

Filesize
408KB

Download
memory/1252-193-0x00000000751E0000-0x0000000075990000-memory.dmp

Filesize
7.7MB

Download
memory/3408-146-0x00000000045A0000-0x00000000045D6000-memory.dmp

Filesize
216KB

Download
memory/3408-187-0x0000000006F10000-0x0000000006F1A000-memory.dmp

Filesize
40KB

Download
memory/3408-163-0x00000000054B0000-0x0000000005516000-memory.dmp

Filesize
408KB

Download
memory/3408-155-0x00000000053E0000-0x0000000005402000-memory.dmp

Filesize
136KB

Download
memory/3408-169-0x0000000005590000-0x00000000055F6000-memory.dmp

Filesize
408KB

Download
memory/3408-170-0x0000000005BA0000-0x0000000005BBE000-memory.dmp

Filesize
120KB

Download
memory/3408-171-0x0000000004640000-0x0000000004650000-memory.dmp

Filesize
64KB

Download
memory/3408-173-0x0000000006B70000-0x0000000006BA2000-memory.dmp

Filesize
200KB

Download
memory/3408-172-0x000000007EE10000-0x000000007EE20000-memory.dmp

Filesize
64KB

Download
memory/3408-174-0x0000000071560000-0x00000000715AC000-memory.dmp

Filesize
304KB

Download
memory/3408-184-0x0000000006130000-0x000000000614E000-memory.dmp

Filesize
120KB

Download
memory/3408-185-0x00000000074E0000-0x0000000007B5A000-memory.dmp

Filesize
6.5MB

Download
memory/3408-186-0x0000000006EA0000-0x0000000006EBA000-memory.dmp

Filesize
104KB

Download
memory/3408-200-0x00000000751E0000-0x0000000075990000-memory.dmp

Filesize
7.7MB

Download
memory/3408-197-0x00000000071E0000-0x00000000071E8000-memory.dmp

Filesize
32KB

Download
memory/3408-190-0x0000000007120000-0x00000000071B6000-memory.dmp

Filesize
600KB

Download
memory/3408-150-0x0000000004C80000-0x00000000052A8000-memory.dmp

Filesize
6.2MB

Download
memory/3408-148-0x0000000004640000-0x0000000004650000-memory.dmp

Filesize
64KB

Download
memory/3408-147-0x00000000751E0000-0x0000000075990000-memory.dmp

Filesize
7.7MB

Download
memory/3408-194-0x00000000751E0000-0x0000000075990000-memory.dmp

Filesize
7.7MB

Download
memory/3408-195-0x00000000070F0000-0x00000000070FE000-memory.dmp

Filesize
56KB

Download
memory/3408-196-0x0000000007200000-0x000000000721A000-memory.dmp

Filesize
104KB

Download
memory/3796-151-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/3796-154-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/3796-201-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download