blustealer | 42f31614f84336fe90a93d59c656e7c564f07497957e2876d5ea0ddb22a96d25

Analysis

max time kernel
39s
max time network
42s
platform
windows7_x64
resource
win7-20220715-en
resource tags

arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system
submitted
28/07/2022, 16:02

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General

Target

Docu086.exe
Size

832KB
MD5

b93e02f5cd2641229c13cffac01315a8
SHA1

0e98a61337f207d1c97aa8eae179dc528d1a75f5
SHA256

42f31614f84336fe90a93d59c656e7c564f07497957e2876d5ea0ddb22a96d25
SHA512

55de646be0b5fa8651be05a525091a29f657ad8560b5e1dbbeed0570b5b3f4da8acaabf78e29cfb05162bae758f4de6d84c804e54376a0be01ffe4d33dff4a56

Score

10^/10

blustealer stealer

Malware Config

Extracted

Family

blustealer

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
[email protected]
Password:
6%s@300%27118

Signatures

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1564 set thread context of 1396	1564	Docu086.exe	29

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
908	powershell.exe
1564	Docu086.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	908	powershell.exe
Token: SeDebugPrivilege	1564	Docu086.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1396	InstallUtil.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1564 wrote to memory of 908	1564	Docu086.exe	27
PID 1564 wrote to memory of 908	1564	Docu086.exe	27
PID 1564 wrote to memory of 908	1564	Docu086.exe	27
PID 1564 wrote to memory of 908	1564	Docu086.exe	27
PID 1564 wrote to memory of 1396	1564	Docu086.exe	29
PID 1564 wrote to memory of 1396	1564	Docu086.exe	29
PID 1564 wrote to memory of 1396	1564	Docu086.exe	29
PID 1564 wrote to memory of 1396	1564	Docu086.exe	29
PID 1564 wrote to memory of 1396	1564	Docu086.exe	29
PID 1564 wrote to memory of 1396	1564	Docu086.exe	29
PID 1564 wrote to memory of 1396	1564	Docu086.exe	29
PID 1564 wrote to memory of 1396	1564	Docu086.exe	29
PID 1564 wrote to memory of 1396	1564	Docu086.exe	29
PID 1564 wrote to memory of 1396	1564	Docu086.exe	29
PID 1564 wrote to memory of 1396	1564	Docu086.exe	29
PID 1564 wrote to memory of 1396	1564	Docu086.exe	29

C:\Users\Admin\AppData\Local\Temp\Docu086.exe
"C:\Users\Admin\AppData\Local\Temp\Docu086.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1564
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:908
- 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:1396

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/908-61-0x000000006EF10000-0x000000006F4BB000-memory.dmp

Filesize
5.7MB

Download
memory/908-60-0x000000006EF10000-0x000000006F4BB000-memory.dmp

Filesize
5.7MB

Download
memory/1396-65-0x0000000000400000-0x000000000049E000-memory.dmp

Filesize
632KB

Download
memory/1396-62-0x0000000000400000-0x000000000049E000-memory.dmp

Filesize
632KB

Download
memory/1396-63-0x0000000000400000-0x000000000049E000-memory.dmp

Filesize
632KB

Download
memory/1396-67-0x0000000000400000-0x000000000049E000-memory.dmp

Filesize
632KB

Download
memory/1396-70-0x0000000000400000-0x000000000049E000-memory.dmp

Filesize
632KB

Download
memory/1396-73-0x0000000000400000-0x000000000049E000-memory.dmp

Filesize
632KB

Download
memory/1396-74-0x0000000000400000-0x000000000049E000-memory.dmp

Filesize
632KB

Download
memory/1564-57-0x00000000763E1000-0x00000000763E3000-memory.dmp

Filesize
8KB

Download
memory/1564-56-0x0000000000A70000-0x0000000000B02000-memory.dmp

Filesize
584KB

Download
memory/1564-55-0x00000000043F0000-0x00000000044B4000-memory.dmp

Filesize
784KB

Download
memory/1564-54-0x0000000000B10000-0x0000000000BE6000-memory.dmp

Filesize
856KB

Download