blustealer | c75c9aa6a59390063715c53c31d399ee5da8d2e03dd7abaae9e369d4b4e5354c

General

Target

DEKONT_P.EXE.exe
Size

1.3MB
MD5

37b87a3acbb3e3926f6bd65a86fec7fc
SHA1

73f0ffd7fabe1e02f25b3cae3fa1c0b92235c33c
SHA256

c75c9aa6a59390063715c53c31d399ee5da8d2e03dd7abaae9e369d4b4e5354c
SHA512

2aa63a46e09a698ebe6d5b8bf0f61f016259813a576d1038ed0b34b40b9ee552b88b34a4940f7a16692c604afe06c95c0a892e28bfb66a0a71a9db76f2209f19
SSDEEP

24576:IYPxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxNussjBuIUJ:yjUMOrbugDNySH3DN6Fdj

Score

10^/10

blustealer collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5310184325:AAFI3fSQ6VcGu_NSTmv7d-qK2WCVhYY_qfg/sendMessage?chat_id=1293496579

Signatures

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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\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 1228 set thread context of 564	1228	DEKONT_P.EXE.exe	31
PID 564 set thread context of 1816	564	DEKONT_P.EXE.exe	32

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
944	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1228	DEKONT_P.EXE.exe
1228	DEKONT_P.EXE.exe
332	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1228	DEKONT_P.EXE.exe
Token: SeDebugPrivilege	332	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
564	DEKONT_P.EXE.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1228 wrote to memory of 332	1228	DEKONT_P.EXE.exe	27
PID 1228 wrote to memory of 332	1228	DEKONT_P.EXE.exe	27
PID 1228 wrote to memory of 332	1228	DEKONT_P.EXE.exe	27
PID 1228 wrote to memory of 332	1228	DEKONT_P.EXE.exe	27
PID 1228 wrote to memory of 944	1228	DEKONT_P.EXE.exe	29
PID 1228 wrote to memory of 944	1228	DEKONT_P.EXE.exe	29
PID 1228 wrote to memory of 944	1228	DEKONT_P.EXE.exe	29
PID 1228 wrote to memory of 944	1228	DEKONT_P.EXE.exe	29
PID 1228 wrote to memory of 564	1228	DEKONT_P.EXE.exe	31
PID 1228 wrote to memory of 564	1228	DEKONT_P.EXE.exe	31
PID 1228 wrote to memory of 564	1228	DEKONT_P.EXE.exe	31
PID 1228 wrote to memory of 564	1228	DEKONT_P.EXE.exe	31
PID 1228 wrote to memory of 564	1228	DEKONT_P.EXE.exe	31
PID 1228 wrote to memory of 564	1228	DEKONT_P.EXE.exe	31
PID 1228 wrote to memory of 564	1228	DEKONT_P.EXE.exe	31
PID 1228 wrote to memory of 564	1228	DEKONT_P.EXE.exe	31
PID 1228 wrote to memory of 564	1228	DEKONT_P.EXE.exe	31
PID 564 wrote to memory of 1816	564	DEKONT_P.EXE.exe	32
PID 564 wrote to memory of 1816	564	DEKONT_P.EXE.exe	32
PID 564 wrote to memory of 1816	564	DEKONT_P.EXE.exe	32
PID 564 wrote to memory of 1816	564	DEKONT_P.EXE.exe	32
PID 564 wrote to memory of 1816	564	DEKONT_P.EXE.exe	32
PID 564 wrote to memory of 1816	564	DEKONT_P.EXE.exe	32
PID 564 wrote to memory of 1816	564	DEKONT_P.EXE.exe	32
PID 564 wrote to memory of 1816	564	DEKONT_P.EXE.exe	32
PID 564 wrote to memory of 1816	564	DEKONT_P.EXE.exe	32

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\DEKONT_P.EXE.exe
"C:\Users\Admin\AppData\Local\Temp\DEKONT_P.EXE.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1228
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\XcEQoBlokDImwz.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:332
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\XcEQoBlokDImwz" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3C56.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:944
- C:\Users\Admin\AppData\Local\Temp\DEKONT_P.EXE.exe
  "C:\Users\Admin\AppData\Local\Temp\DEKONT_P.EXE.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:564
- - 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:1816

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3C56.tmp

Filesize
1KB

MD5
41799afac889f9665eff6c6b28a21bf0

SHA1
3374ab2c6b4b1fb85adf60dee1f9b4f25f18fc51

SHA256
98d1e960b68905b53d0b1adef84b3991479dd076657597474f9f1dc1a06bac00

SHA512
5078f9b8d47f20d5c227f5975616f5143f460f75f4a807b0c3ae70be56b0149eec3f7adfaf4feb9bef45ecf5fbf301564600337cb4cf6bb87ef8c610f992d0a1

Download Submit
memory/332-88-0x00000000741E0000-0x000000007478B000-memory.dmp

Filesize
5.7MB

Download
memory/332-77-0x00000000741E0000-0x000000007478B000-memory.dmp

Filesize
5.7MB

Download
memory/564-69-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/564-89-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/564-76-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/564-72-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/564-64-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/564-65-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/564-67-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1228-63-0x000000000A7F0000-0x000000000A864000-memory.dmp

Filesize
464KB

Download
memory/1228-54-0x00000000010E0000-0x000000000122C000-memory.dmp

Filesize
1.3MB

Download
memory/1228-58-0x000000000A330000-0x000000000A3FA000-memory.dmp

Filesize
808KB

Download
memory/1228-57-0x00000000004B0000-0x00000000004BC000-memory.dmp

Filesize
48KB

Download
memory/1228-56-0x0000000000500000-0x0000000000518000-memory.dmp

Filesize
96KB

Download
memory/1228-55-0x0000000075561000-0x0000000075563000-memory.dmp

Filesize
8KB

Download
memory/1816-78-0x0000000000200000-0x0000000000266000-memory.dmp

Filesize
408KB

Download
memory/1816-80-0x0000000000200000-0x0000000000266000-memory.dmp

Filesize
408KB

Download
memory/1816-83-0x0000000000200000-0x0000000000266000-memory.dmp

Filesize
408KB

Download
memory/1816-85-0x0000000000200000-0x0000000000266000-memory.dmp

Filesize
408KB

Download
memory/1816-87-0x0000000002450000-0x000000000250C000-memory.dmp

Filesize
752KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads