blustealer | 3879b7d1e92d9b91e94c83e35421b6b64c1e529e28335962c1da8626b0a29d83

General

Target

doc2022001001001.pdf.exe
Size

1.2MB
MD5

39b7ffa8957fe5a6ca72cca183a67d42
SHA1

41b478d0dbf80cf8a6fffc1b14230c193ae124e5
SHA256

3879b7d1e92d9b91e94c83e35421b6b64c1e529e28335962c1da8626b0a29d83
SHA512

43ebc7daf28ebf5ebc8016533e26b13d1e185610690badcf613af20f6e3ff66d7c0adc71dec714c50c06359182f421f3cf05983af2252c5fdd8375c1fa2631e2

Score

10^/10

blustealer stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5420760971:AAH01qjNE4a_MymOsvjAcXOxeYA3Wd9XCkE/sendMessage?chat_id=1856108848

Signatures

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1896 set thread context of 1068	1896	doc2022001001001.pdf.exe	31

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
1728	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1896	doc2022001001001.pdf.exe
1896	doc2022001001001.pdf.exe
1896	doc2022001001001.pdf.exe
1724	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1896	doc2022001001001.pdf.exe
Token: SeDebugPrivilege	1724	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1068	doc2022001001001.pdf.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1896 wrote to memory of 1724	1896	doc2022001001001.pdf.exe	27
PID 1896 wrote to memory of 1724	1896	doc2022001001001.pdf.exe	27
PID 1896 wrote to memory of 1724	1896	doc2022001001001.pdf.exe	27
PID 1896 wrote to memory of 1724	1896	doc2022001001001.pdf.exe	27
PID 1896 wrote to memory of 1728	1896	doc2022001001001.pdf.exe	29
PID 1896 wrote to memory of 1728	1896	doc2022001001001.pdf.exe	29
PID 1896 wrote to memory of 1728	1896	doc2022001001001.pdf.exe	29
PID 1896 wrote to memory of 1728	1896	doc2022001001001.pdf.exe	29
PID 1896 wrote to memory of 1068	1896	doc2022001001001.pdf.exe	31
PID 1896 wrote to memory of 1068	1896	doc2022001001001.pdf.exe	31
PID 1896 wrote to memory of 1068	1896	doc2022001001001.pdf.exe	31
PID 1896 wrote to memory of 1068	1896	doc2022001001001.pdf.exe	31
PID 1896 wrote to memory of 1068	1896	doc2022001001001.pdf.exe	31
PID 1896 wrote to memory of 1068	1896	doc2022001001001.pdf.exe	31
PID 1896 wrote to memory of 1068	1896	doc2022001001001.pdf.exe	31
PID 1896 wrote to memory of 1068	1896	doc2022001001001.pdf.exe	31
PID 1896 wrote to memory of 1068	1896	doc2022001001001.pdf.exe	31

C:\Users\Admin\AppData\Local\Temp\doc2022001001001.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\doc2022001001001.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1896
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\svsbbPBTQBkgEG.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1724
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\svsbbPBTQBkgEG" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDF77.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1728
- C:\Users\Admin\AppData\Local\Temp\doc2022001001001.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\doc2022001001001.pdf.exe"
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:1068

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpDF77.tmp

Filesize
1KB

MD5
2f5361ed93bdf6de5638b31b27c2043c

SHA1
84d52d2caf8d7bb7e205ab8a5a9e660218384d21

SHA256
48447f1bcc20e4406210319222ab9ed0b5006d5ff57982bfcf99d9e73891bc67

SHA512
f46ceae38c9f8e03a651c5b275fb6aa7f6ac15f72411e56091a9794d10035efa23c22c2f5e2fbf72e4fff742895832b4f897bb9189e0e3557595cf49085fbdbc

Download Submit
memory/1068-73-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/1068-78-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/1068-65-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/1068-70-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/1068-68-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/1068-66-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/1724-77-0x000000006C850000-0x000000006CDFB000-memory.dmp

Filesize
5.7MB

Download
memory/1724-79-0x000000006C850000-0x000000006CDFB000-memory.dmp

Filesize
5.7MB

Download
memory/1896-55-0x00000000762A1000-0x00000000762A3000-memory.dmp

Filesize
8KB

Download
memory/1896-56-0x0000000000260000-0x0000000000276000-memory.dmp

Filesize
88KB

Download
memory/1896-58-0x0000000004EC5000-0x0000000004ED6000-memory.dmp

Filesize
68KB

Download
memory/1896-59-0x0000000005E80000-0x0000000005F6E000-memory.dmp

Filesize
952KB

Download
memory/1896-64-0x0000000009DE0000-0x0000000009E86000-memory.dmp

Filesize
664KB

Download
memory/1896-54-0x0000000000FC0000-0x00000000010F2000-memory.dmp

Filesize
1.2MB

Download
memory/1896-75-0x0000000004EC5000-0x0000000004ED6000-memory.dmp

Filesize
68KB

Download
memory/1896-57-0x0000000000520000-0x000000000052A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads