blustealer | b8a46aa74b7e451ca9ae336258971d7d46334b37c487da00a6039c1d146f6d62

Analysis

max time kernel
131s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06/03/2025, 02:28

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General

Target

27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe
Size

1.3MB
MD5

2e6372abf5c58a233b273eb612950567
SHA1

aed459512d857a0a6248cc9cb5785963a335b47e
SHA256

27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71
SHA512

ce06d3aa738e8f466c0e2be8cd9e2a79c286f4af4c7ed88da95d8b93bfa998e705eb25b6f5c9ae8d1d11fe4787f0c743edefae985d8756e822b1b003fcd61107
SSDEEP

24576:7bx5ACyRtvPExqgcSSu5bqhD92oK8t7yz5b/UXq60Lnyx2M3TttxnvR:vAVRBPhbSFAhcKtYiq60LnKTVnp

Score

10^/10

blustealer discovery stealer

Malware Config

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
1296	snto.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1908 set thread context of 2924	1908	27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe	31

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	snto.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3064	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1908	27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe
Token: SeDebugPrivilege	1296	snto.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 1908 wrote to memory of 2924	1908	27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe	31
PID 1908 wrote to memory of 2924	1908	27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe	31
PID 1908 wrote to memory of 2924	1908	27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe	31
PID 1908 wrote to memory of 2924	1908	27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe	31
PID 1908 wrote to memory of 2924	1908	27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe	31
PID 1908 wrote to memory of 2924	1908	27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe	31
PID 1908 wrote to memory of 2924	1908	27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe	31
PID 1908 wrote to memory of 2924	1908	27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe	31
PID 1908 wrote to memory of 2924	1908	27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe	31
PID 1908 wrote to memory of 2616	1908	27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe	32
PID 1908 wrote to memory of 2616	1908	27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe	32
PID 1908 wrote to memory of 2616	1908	27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe	32
PID 1908 wrote to memory of 2616	1908	27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe	32
PID 1908 wrote to memory of 2624	1908	27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe	33
PID 1908 wrote to memory of 2624	1908	27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe	33
PID 1908 wrote to memory of 2624	1908	27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe	33
PID 1908 wrote to memory of 2624	1908	27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe	33
PID 2616 wrote to memory of 3064	2616	cmd.exe	36
PID 2616 wrote to memory of 3064	2616	cmd.exe	36
PID 2616 wrote to memory of 3064	2616	cmd.exe	36
PID 2616 wrote to memory of 3064	2616	cmd.exe	36
PID 588 wrote to memory of 1296	588	taskeng.exe	38
PID 588 wrote to memory of 1296	588	taskeng.exe	38
PID 588 wrote to memory of 1296	588	taskeng.exe	38
PID 588 wrote to memory of 1296	588	taskeng.exe	38

C:\Users\Admin\AppData\Local\Temp\27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe
"C:\Users\Admin\AppData\Local\Temp\27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1908
- C:\Users\Admin\AppData\Local\Temp\27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe
  "C:\Users\Admin\AppData\Local\Temp\27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe"
  2⤵
  PID:2924
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\snto\snto.exe'" /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2616
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\snto\snto.exe'" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3064
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71.exe" "C:\Users\Admin\AppData\Roaming\snto\snto.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2624

C:\Windows\system32\taskeng.exe
taskeng.exe {D89C5828-E282-4A4F-BC3E-1AA042F4E4BD} S-1-5-21-1488793075-819845221-1497111674-1000:UPNECVIU\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:588
- C:\Users\Admin\AppData\Roaming\snto\snto.exe
  C:\Users\Admin\AppData\Roaming\snto\snto.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1296

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\snto\snto.exe

Filesize
1.3MB

MD5
2e6372abf5c58a233b273eb612950567

SHA1
aed459512d857a0a6248cc9cb5785963a335b47e

SHA256
27f824a80ebdad6b53d01f487ecb17616c0a2a9d9700ca3be3b1c1a24cdc1f71

SHA512
ce06d3aa738e8f466c0e2be8cd9e2a79c286f4af4c7ed88da95d8b93bfa998e705eb25b6f5c9ae8d1d11fe4787f0c743edefae985d8756e822b1b003fcd61107

Download Submit
memory/1296-17-0x0000000000BA0000-0x0000000000CFE000-memory.dmp

Filesize
1.4MB

Download
memory/1908-0-0x000000007478E000-0x000000007478F000-memory.dmp

Filesize
4KB

Download
memory/1908-1-0x0000000000860000-0x00000000009BE000-memory.dmp

Filesize
1.4MB

Download
memory/1908-2-0x0000000074780000-0x0000000074E6E000-memory.dmp

Filesize
6.9MB

Download
memory/1908-3-0x0000000074780000-0x0000000074E6E000-memory.dmp

Filesize
6.9MB

Download
memory/2924-6-0x0000000000080000-0x0000000000189000-memory.dmp

Filesize
1.0MB

Download
memory/2924-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2924-4-0x0000000000080000-0x0000000000189000-memory.dmp

Filesize
1.0MB

Download
memory/2924-5-0x0000000000080000-0x0000000000189000-memory.dmp

Filesize
1.0MB

Download
memory/2924-12-0x0000000000080000-0x0000000000189000-memory.dmp

Filesize
1.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads