blustealer | 94b31c76e3a98889bb14573bbf9de1e4d8626ae635ffa64f6edf24e1b83ee724

Analysis

max time kernel
151s
max time network
42s
platform
windows7_x64
resource
win7-20220715-en
resource tags

arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system
submitted
03-08-2022 14:20

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General

Target

lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe
Size

1.1MB
MD5

1dae99466ebd8bb0dcd10a0dad664310
SHA1

5407aa0bed4dfb96dbb97fca018900bb9e60d40c
SHA256

94b31c76e3a98889bb14573bbf9de1e4d8626ae635ffa64f6edf24e1b83ee724
SHA512

3f99b018dbff4dd960471f203d9b0e60796cf5f8e3c1f7f188f637383fa85e1913bfeac6dc41d99ea63d2bd13b4f286d88a0b324a98d17f70d6273122da9850c

Score

10^/10

blustealer stealer

Malware Config

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
1756	qmsq.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1968 set thread context of 1572	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	27

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
1932	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe
Token: SeDebugPrivilege	1756	qmsq.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1436	AcroRd32.exe
1436	AcroRd32.exe
1436	AcroRd32.exe
1436	AcroRd32.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 1572	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	27
PID 1968 wrote to memory of 1572	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	27
PID 1968 wrote to memory of 1572	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	27
PID 1968 wrote to memory of 1572	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	27
PID 1968 wrote to memory of 1572	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	27
PID 1968 wrote to memory of 1572	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	27
PID 1968 wrote to memory of 1572	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	27
PID 1968 wrote to memory of 1572	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	27
PID 1968 wrote to memory of 1572	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	27
PID 1968 wrote to memory of 1436	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	28
PID 1968 wrote to memory of 1436	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	28
PID 1968 wrote to memory of 1436	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	28
PID 1968 wrote to memory of 1436	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	28
PID 1968 wrote to memory of 948	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	29
PID 1968 wrote to memory of 948	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	29
PID 1968 wrote to memory of 948	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	29
PID 1968 wrote to memory of 948	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	29
PID 1968 wrote to memory of 524	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	31
PID 1968 wrote to memory of 524	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	31
PID 1968 wrote to memory of 524	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	31
PID 1968 wrote to memory of 524	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	31
PID 1968 wrote to memory of 616	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	33
PID 1968 wrote to memory of 616	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	33
PID 1968 wrote to memory of 616	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	33
PID 1968 wrote to memory of 616	1968	lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe	33
PID 524 wrote to memory of 1932	524	cmd.exe	35
PID 524 wrote to memory of 1932	524	cmd.exe	35
PID 524 wrote to memory of 1932	524	cmd.exe	35
PID 524 wrote to memory of 1932	524	cmd.exe	35
PID 1904 wrote to memory of 1756	1904	taskeng.exe	37
PID 1904 wrote to memory of 1756	1904	taskeng.exe	37
PID 1904 wrote to memory of 1756	1904	taskeng.exe	37
PID 1904 wrote to memory of 1756	1904	taskeng.exe	37

C:\Users\Admin\AppData\Local\Temp\lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe
"C:\Users\Admin\AppData\Local\Temp\lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  PID:1572
- C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
  "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\file.pdf"
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:1436
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\qmsq"
  2⤵
  PID:948
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\qmsq\qmsq.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:524
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\qmsq\qmsq.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:1932
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\lLMcduOpiIm7FFc7v53h5NhiauY1-6ZPbt8k4bg_5yQ.exe" "C:\Users\Admin\AppData\Roaming\qmsq\qmsq.exe"
  2⤵
  PID:616

C:\Windows\system32\taskeng.exe
taskeng.exe {1ADBC253-830F-4ECF-9C0E-3BD875D669A8} S-1-5-21-335065374-4263250628-1829373619-1000:RTYPLWYY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1904
- C:\Users\Admin\AppData\Roaming\qmsq\qmsq.exe
  C:\Users\Admin\AppData\Roaming\qmsq\qmsq.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1756

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Scripting

T1064

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Scripting

T1064

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\file.pdf

Filesize
215KB

MD5
33e77f08076d0a57cf0c49bac2eb5427

SHA1
4913cfb36cf8faa5df289eda8dfc35a196c37df4

SHA256
4df1b409aeabe59d70d24524e2b2ca1b9ac1a7b5b65722df951faacbc8e44d1a

SHA512
5320f8d8585d298a5af08bf5120b66b78edbe253d4e0299855e52624fde28e025caf78a1c17c770c82ec8a3f8becb25eaa3afbb5ac02a82503e9f17b31ee0070

Download Submit
C:\Users\Admin\AppData\Roaming\qmsq\qmsq.exe

Filesize
1.1MB

MD5
1dae99466ebd8bb0dcd10a0dad664310

SHA1
5407aa0bed4dfb96dbb97fca018900bb9e60d40c

SHA256
94b31c76e3a98889bb14573bbf9de1e4d8626ae635ffa64f6edf24e1b83ee724

SHA512
3f99b018dbff4dd960471f203d9b0e60796cf5f8e3c1f7f188f637383fa85e1913bfeac6dc41d99ea63d2bd13b4f286d88a0b324a98d17f70d6273122da9850c

Download Submit
C:\Users\Admin\AppData\Roaming\qmsq\qmsq.exe

Filesize
1.1MB

MD5
1dae99466ebd8bb0dcd10a0dad664310

SHA1
5407aa0bed4dfb96dbb97fca018900bb9e60d40c

SHA256
94b31c76e3a98889bb14573bbf9de1e4d8626ae635ffa64f6edf24e1b83ee724

SHA512
3f99b018dbff4dd960471f203d9b0e60796cf5f8e3c1f7f188f637383fa85e1913bfeac6dc41d99ea63d2bd13b4f286d88a0b324a98d17f70d6273122da9850c

Download Submit
memory/1572-64-0x0000000000420000-0x00000000004BE000-memory.dmp

Filesize
632KB

Download
memory/1572-63-0x0000000000421000-0x00000000004BC000-memory.dmp

Filesize
620KB

Download
memory/1572-59-0x0000000000420000-0x00000000004BE000-memory.dmp

Filesize
632KB

Download
memory/1572-57-0x0000000000421000-0x00000000004BC000-memory.dmp

Filesize
620KB

Download
memory/1756-75-0x0000000000200000-0x0000000000318000-memory.dmp

Filesize
1.1MB

Download
memory/1968-54-0x0000000000A30000-0x0000000000B48000-memory.dmp

Filesize
1.1MB

Download
memory/1968-55-0x0000000075891000-0x0000000075893000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads