blustealer | 77053cffbf81fc755f5d119b907f63456ff18706a3274bf619315baf03411087

General

Target

BPL_1057230.exe
Size

187KB
MD5

72048fbaab48b29537a9b8b6af6bd37d
SHA1

fb253b22ae678164dad4de1f8f472a1338c8582a
SHA256

77053cffbf81fc755f5d119b907f63456ff18706a3274bf619315baf03411087
SHA512

8909e498201a610020fd59e7bfc1340da71dc0ca8a4205adaba12151dd50a0cb0e88b0b358a361ecec5d6cefa5708bc7a19dea21e5b9d857d1057fce27640601

Score

10^/10

blustealer persistence stealer

Malware Config

Extracted

Family

blustealer

Credentials

Protocol: smtp
Host:
mail.juhun.shop
Port:
587
Username:
[email protected]
Password:
(_ZH%s&u{1FF

Signatures

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

BPL_1057230.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rvkkghcc = "\"C:\\Users\\Admin\\AppData\\Roaming\\Gqguc\\Rvkkghcc.exe\""	BPL_1057230.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

BPL_1057230.exe

description	pid	Process	procid_target
PID 1564 set thread context of 1848	1564	BPL_1057230.exe	30

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

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

Processes:

timeout.exe

pid	Process
2016	timeout.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

BPL_1057230.exe

pid	Process
1564	BPL_1057230.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

BPL_1057230.exe

description	pid	Process
Token: SeDebugPrivilege	1564	BPL_1057230.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

InstallUtil.exe

pid	Process
1848	InstallUtil.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

BPL_1057230.execmd.exe

description	pid	Process	procid_target
PID 1564 wrote to memory of 2044	1564	BPL_1057230.exe	27
PID 1564 wrote to memory of 2044	1564	BPL_1057230.exe	27
PID 1564 wrote to memory of 2044	1564	BPL_1057230.exe	27
PID 1564 wrote to memory of 2044	1564	BPL_1057230.exe	27
PID 2044 wrote to memory of 2016	2044	cmd.exe	29
PID 2044 wrote to memory of 2016	2044	cmd.exe	29
PID 2044 wrote to memory of 2016	2044	cmd.exe	29
PID 2044 wrote to memory of 2016	2044	cmd.exe	29
PID 1564 wrote to memory of 1848	1564	BPL_1057230.exe	30
PID 1564 wrote to memory of 1848	1564	BPL_1057230.exe	30
PID 1564 wrote to memory of 1848	1564	BPL_1057230.exe	30
PID 1564 wrote to memory of 1848	1564	BPL_1057230.exe	30
PID 1564 wrote to memory of 1848	1564	BPL_1057230.exe	30
PID 1564 wrote to memory of 1848	1564	BPL_1057230.exe	30
PID 1564 wrote to memory of 1848	1564	BPL_1057230.exe	30
PID 1564 wrote to memory of 1848	1564	BPL_1057230.exe	30
PID 1564 wrote to memory of 1848	1564	BPL_1057230.exe	30
PID 1564 wrote to memory of 1848	1564	BPL_1057230.exe	30
PID 1564 wrote to memory of 1848	1564	BPL_1057230.exe	30
PID 1564 wrote to memory of 1848	1564	BPL_1057230.exe	30

C:\Users\Admin\AppData\Local\Temp\BPL_1057230.exe
"C:\Users\Admin\AppData\Local\Temp\BPL_1057230.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1564
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout 11
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2044
- - C:\Windows\SysWOW64\timeout.exe
    timeout 11
    3⤵
    - Delays execution with timeout.exe
    PID:2016
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:1848

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

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1564-54-0x0000000000860000-0x0000000000894000-memory.dmp

Filesize
208KB

Download
memory/1564-55-0x00000000763B1000-0x00000000763B3000-memory.dmp

Filesize
8KB

Download
memory/1564-56-0x0000000007C70000-0x0000000007D96000-memory.dmp

Filesize
1.1MB

Download
memory/1564-57-0x0000000005190000-0x00000000051DC000-memory.dmp

Filesize
304KB

Download
memory/1848-60-0x0000000000400000-0x000000000049F000-memory.dmp

Filesize
636KB

Download
memory/1848-61-0x0000000000400000-0x000000000049F000-memory.dmp

Filesize
636KB

Download
memory/1848-63-0x0000000000400000-0x000000000049F000-memory.dmp

Filesize
636KB

Download
memory/1848-65-0x0000000000400000-0x000000000049F000-memory.dmp

Filesize
636KB

Download
memory/1848-66-0x0000000000403878-mapping.dmp

Download
memory/1848-68-0x0000000000400000-0x000000000049F000-memory.dmp

Filesize
636KB

Download
memory/1848-71-0x0000000000400000-0x000000000049F000-memory.dmp

Filesize
636KB

Download
memory/2016-59-0x0000000000000000-mapping.dmp

Download
memory/2044-58-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads