blustealer | f9bc0d5860d6135dab48b897e55465d88ebd0ca9b73ebdbaf83957d6e3bee26f

Analysis

max time kernel
40s
max time network
45s
platform
windows7_x64
resource
win7-20220718-en
resource tags

arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
submitted
01/08/2022, 20:31

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General

Target

PO 7500093232.exe
Size

482KB
MD5

832efb6bf9f508ebb2c41257fadcc300
SHA1

1e8667e1561c3411f42f98c494dcc99be36d6d6a
SHA256

f9bc0d5860d6135dab48b897e55465d88ebd0ca9b73ebdbaf83957d6e3bee26f
SHA512

f866c97b78b006891b34b5afa8f0d3e3a8bf0e7033ab8970e142427e2611f07127fb3661bec26d43e0f68aa9e19aa8932adc2fb296cf1cdfdd85dd2b72eb30ea

Score

10^/10

blustealer stealer

Malware Config

Signatures

BluStealer
A Modular information stealer written in Visual Basic.
stealer blustealer
Downloads MZ/PE file

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\aLFDxEdS.lnk	PO 7500093232.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1744 set thread context of 1052	1744	PO 7500093232.exe	27

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1744	PO 7500093232.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1744 wrote to memory of 1052	1744	PO 7500093232.exe	27
PID 1744 wrote to memory of 1052	1744	PO 7500093232.exe	27
PID 1744 wrote to memory of 1052	1744	PO 7500093232.exe	27
PID 1744 wrote to memory of 1052	1744	PO 7500093232.exe	27
PID 1744 wrote to memory of 1052	1744	PO 7500093232.exe	27
PID 1744 wrote to memory of 1052	1744	PO 7500093232.exe	27
PID 1744 wrote to memory of 1052	1744	PO 7500093232.exe	27
PID 1744 wrote to memory of 1052	1744	PO 7500093232.exe	27
PID 1744 wrote to memory of 1052	1744	PO 7500093232.exe	27

C:\Users\Admin\AppData\Local\Temp\PO 7500093232.exe
"C:\Users\Admin\AppData\Local\Temp\PO 7500093232.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1744
- C:\Users\Admin\AppData\Local\Temp\PO 7500093232.exe
  "C:\Users\Admin\AppData\Local\Temp\PO 7500093232.exe"
  2⤵
  PID:1052

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1052-57-0x0000000000200000-0x0000000000222000-memory.dmp

Filesize
136KB

Download
memory/1052-58-0x0000000000200000-0x0000000000222000-memory.dmp

Filesize
136KB

Download
memory/1052-60-0x0000000000200000-0x0000000000222000-memory.dmp

Filesize
136KB

Download
memory/1052-62-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1052-64-0x0000000000200000-0x0000000000222000-memory.dmp

Filesize
136KB

Download
memory/1744-54-0x00000000003E0000-0x000000000045E000-memory.dmp

Filesize
504KB

Download
memory/1744-55-0x00000000754F1000-0x00000000754F3000-memory.dmp

Filesize
8KB

Download
memory/1744-56-0x0000000000760000-0x000000000077C000-memory.dmp

Filesize
112KB

Download