blustealer | 8c9d8d4eb2f2179b9c628488b749e5ef49b4d0b25bd04815c86142426e66ed32

General

Target

d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe
Size

2.4MB
MD5

888a18230e69a8ba0c420042bcb6e758
SHA1

0b0dcb23577efc327acdd2ff052bb3d54693d715
SHA256

d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05
SHA512

d20488366904fda6dccb6a92c4ad0bfc74d2c74702e2f4cadef197cdf1e3f37cd39f3b35a8df9bfc8d3f9a71bfb4fefa6adf0b5f4b8f4cf8eb017367847fd3cc
SSDEEP

24576:sE9iqdFA3SA2PWRLxlTP0q0prBMsOZORHJd5SbyBRJ4y4c2TsdZh8FzxZ+hLAwKu:79vgIWRbb0RtYQBXhcOatvd4oS

Score

10^/10

blustealer collection persistence spyware stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5813496253:AAF4hamIx4-mNmFF1DwsqdJ4F9vUBmFqLo/sendMessage?chat_id=1105271645

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-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation	d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Oxpurhx = "\"C:\\Users\\Admin\\AppData\\Roaming\\Ekoclg\\Oxpurhx.exe\""	d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4424 set thread context of 4948	4424	d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe	99
PID 4948 set thread context of 3532	4948	d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe	102

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

System Information Discovery
T1082

Script User-Agent 1 IoCs

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

description	flow	ioc
HTTP User-Agent header	62	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4052	powershell.exe
4052	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4052	powershell.exe
Token: SeDebugPrivilege	4424	d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4948	d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4424 wrote to memory of 4052	4424	d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe	86
PID 4424 wrote to memory of 4052	4424	d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe	86
PID 4424 wrote to memory of 4052	4424	d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe	86
PID 4424 wrote to memory of 4948	4424	d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe	99
PID 4424 wrote to memory of 4948	4424	d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe	99
PID 4424 wrote to memory of 4948	4424	d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe	99
PID 4424 wrote to memory of 4948	4424	d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe	99
PID 4424 wrote to memory of 4948	4424	d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe	99
PID 4424 wrote to memory of 4948	4424	d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe	99
PID 4424 wrote to memory of 4948	4424	d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe	99
PID 4424 wrote to memory of 4948	4424	d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe	99
PID 4948 wrote to memory of 3532	4948	d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe	102
PID 4948 wrote to memory of 3532	4948	d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe	102
PID 4948 wrote to memory of 3532	4948	d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe	102
PID 4948 wrote to memory of 3532	4948	d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe	102
PID 4948 wrote to memory of 3532	4948	d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe	102

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe
"C:\Users\Admin\AppData\Local\Temp\d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4424
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4052
- C:\Users\Admin\AppData\Local\Temp\d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe
  C:\Users\Admin\AppData\Local\Temp\d50e53128afae84f81f41fce22e7ce3f13442485d7c7ce3bb1417afaba6c9c05.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4948
- - 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:3532

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fyqabe12.1mt.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3532-172-0x0000000005470000-0x000000000550C000-memory.dmp

Filesize
624KB

Download
memory/3532-171-0x0000000000DB0000-0x0000000000E16000-memory.dmp

Filesize
408KB

Download
memory/4052-153-0x0000000007AC0000-0x000000000813A000-memory.dmp

Filesize
6.5MB

Download
memory/4052-157-0x00000000029B0000-0x00000000029C0000-memory.dmp

Filesize
64KB

Download
memory/4052-138-0x0000000005B80000-0x0000000005BE6000-memory.dmp

Filesize
408KB

Download
memory/4052-144-0x0000000005BF0000-0x0000000005C56000-memory.dmp

Filesize
408KB

Download
memory/4052-136-0x0000000002920000-0x0000000002956000-memory.dmp

Filesize
216KB

Download
memory/4052-149-0x00000000029B0000-0x00000000029C0000-memory.dmp

Filesize
64KB

Download
memory/4052-150-0x00000000029B0000-0x00000000029C0000-memory.dmp

Filesize
64KB

Download
memory/4052-151-0x0000000006250000-0x000000000626E000-memory.dmp

Filesize
120KB

Download
memory/4052-152-0x00000000029B0000-0x00000000029C0000-memory.dmp

Filesize
64KB

Download
memory/4052-158-0x00000000029B0000-0x00000000029C0000-memory.dmp

Filesize
64KB

Download
memory/4052-154-0x0000000006740000-0x000000000675A000-memory.dmp

Filesize
104KB

Download
memory/4052-137-0x00000000053C0000-0x00000000059E8000-memory.dmp

Filesize
6.2MB

Download
memory/4052-156-0x00000000029B0000-0x00000000029C0000-memory.dmp

Filesize
64KB

Download
memory/4424-155-0x00000000053C0000-0x00000000053D0000-memory.dmp

Filesize
64KB

Download
memory/4424-133-0x00000000006F0000-0x0000000000956000-memory.dmp

Filesize
2.4MB

Download
memory/4424-135-0x00000000056B0000-0x00000000056D2000-memory.dmp

Filesize
136KB

Download
memory/4424-134-0x00000000053C0000-0x00000000053D0000-memory.dmp

Filesize
64KB

Download
memory/4948-163-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/4948-166-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/4948-169-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/4948-170-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download

Analysis

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