blustealer | b8a46aa74b7e451ca9ae336258971d7d46334b37c487da00a6039c1d146f6d62

Analysis

max time kernel
126s
max time network
128s
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

2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe
Size

1.3MB
MD5

40359b10d6abf5315ad4989515c8cd85
SHA1

7ff721bba3042816f6f7fd282c93d270247dd20f
SHA256

2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647
SHA512

b1583343d928976d222fe9ac9857e2f73f324b853e04be40602db2425c51a56681ad992d1d2adb95da454f5ce5ca1a7731ef0a380d1d84ca5b112fb182145005
SSDEEP

24576:7bx5ACyRtvPExqgcSSu5bqhD92oK8t7yz5b/UXq60Lnyx2M3TttxnvZ:vAVRBPhbSFAhcKtYiq60LnKTVnR

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
2504	snto.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2364 set thread context of 2928	2364	2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	snto.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.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
2508	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2364	2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe
Token: SeDebugPrivilege	2504	snto.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 2928	2364	2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe	31
PID 2364 wrote to memory of 2928	2364	2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe	31
PID 2364 wrote to memory of 2928	2364	2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe	31
PID 2364 wrote to memory of 2928	2364	2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe	31
PID 2364 wrote to memory of 2928	2364	2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe	31
PID 2364 wrote to memory of 2928	2364	2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe	31
PID 2364 wrote to memory of 2928	2364	2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe	31
PID 2364 wrote to memory of 2928	2364	2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe	31
PID 2364 wrote to memory of 2928	2364	2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe	31
PID 2364 wrote to memory of 2596	2364	2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe	32
PID 2364 wrote to memory of 2596	2364	2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe	32
PID 2364 wrote to memory of 2596	2364	2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe	32
PID 2364 wrote to memory of 2596	2364	2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe	32
PID 2364 wrote to memory of 2608	2364	2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe	33
PID 2364 wrote to memory of 2608	2364	2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe	33
PID 2364 wrote to memory of 2608	2364	2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe	33
PID 2364 wrote to memory of 2608	2364	2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe	33
PID 2596 wrote to memory of 2508	2596	cmd.exe	36
PID 2596 wrote to memory of 2508	2596	cmd.exe	36
PID 2596 wrote to memory of 2508	2596	cmd.exe	36
PID 2596 wrote to memory of 2508	2596	cmd.exe	36
PID 2164 wrote to memory of 2504	2164	taskeng.exe	38
PID 2164 wrote to memory of 2504	2164	taskeng.exe	38
PID 2164 wrote to memory of 2504	2164	taskeng.exe	38
PID 2164 wrote to memory of 2504	2164	taskeng.exe	38

C:\Users\Admin\AppData\Local\Temp\2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe
"C:\Users\Admin\AppData\Local\Temp\2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Users\Admin\AppData\Local\Temp\2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe
  "C:\Users\Admin\AppData\Local\Temp\2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe"
  2⤵
  PID:2928
- 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:2596
- - 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:2508
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647.exe" "C:\Users\Admin\AppData\Roaming\snto\snto.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2608

C:\Windows\system32\taskeng.exe
taskeng.exe {BD746746-5E57-421E-8EFE-7E7D02EB847D} S-1-5-21-2872745919-2748461613-2989606286-1000:CCJBVTGQ\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2164
- 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:2504

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
40359b10d6abf5315ad4989515c8cd85

SHA1
7ff721bba3042816f6f7fd282c93d270247dd20f

SHA256
2c4115951e3a55fe85cf0ebb6fcf5e65ccbebfa0774a3f15db7856b74e8e6647

SHA512
b1583343d928976d222fe9ac9857e2f73f324b853e04be40602db2425c51a56681ad992d1d2adb95da454f5ce5ca1a7731ef0a380d1d84ca5b112fb182145005

Download Submit
memory/2364-0-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

Filesize
4KB

Download
memory/2364-1-0x0000000000010000-0x000000000016E000-memory.dmp

Filesize
1.4MB

Download
memory/2364-2-0x0000000074A70000-0x000000007515E000-memory.dmp

Filesize
6.9MB

Download
memory/2364-3-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

Filesize
4KB

Download
memory/2364-4-0x0000000074A70000-0x000000007515E000-memory.dmp

Filesize
6.9MB

Download
memory/2504-18-0x0000000000800000-0x000000000095E000-memory.dmp

Filesize
1.4MB

Download
memory/2928-5-0x0000000000470000-0x0000000000579000-memory.dmp

Filesize
1.0MB

Download
memory/2928-7-0x0000000000470000-0x0000000000579000-memory.dmp

Filesize
1.0MB

Download
memory/2928-6-0x0000000000470000-0x0000000000579000-memory.dmp

Filesize
1.0MB

Download
memory/2928-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2928-12-0x0000000000470000-0x0000000000579000-memory.dmp

Filesize
1.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads