blustealer | 77c6e1965847d0c468be046c2360733a408b0b7641eca5514b5810e2f132eec6

General

Target

Invoice no. 004.exe
Size

626KB
MD5

5500eeff820e3f9518f14ac32df4e735
SHA1

25af6b1565154eac95865b9db7944b9bbc842493
SHA256

45035676e4441c255385a1436d86540859459f5b1f3105e7a21bc9c07057276c
SHA512

79579fbacb4d138e39b73ccdc0a0dcc5683c7abe55691ca8f35e8c55001fd9d801122b5b9b8a5e5e64fef1e4a6508fd1bf84547bb09cc37a1c9fa6787bb2edef
SSDEEP

12288:zTMyRj2hhIFdlf3VqRc4l75hFILoX8dDSYEXFBNCxUmeGptLWlqYCYvx8S:zTMqKkFdN3+cs77FD2Do3jmFpwlgYvx

Score

10^/10

blustealer stealer

Malware Config

Signatures

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1912 set thread context of 636	1912	Invoice no. 004.exe	32

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
956	schtasks.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe
1912	Invoice no. 004.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1912	Invoice no. 004.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1912 wrote to memory of 1664	1912	Invoice no. 004.exe	28
PID 1912 wrote to memory of 1664	1912	Invoice no. 004.exe	28
PID 1912 wrote to memory of 1664	1912	Invoice no. 004.exe	28
PID 1912 wrote to memory of 1664	1912	Invoice no. 004.exe	28
PID 1912 wrote to memory of 956	1912	Invoice no. 004.exe	30
PID 1912 wrote to memory of 956	1912	Invoice no. 004.exe	30
PID 1912 wrote to memory of 956	1912	Invoice no. 004.exe	30
PID 1912 wrote to memory of 956	1912	Invoice no. 004.exe	30
PID 1912 wrote to memory of 636	1912	Invoice no. 004.exe	32
PID 1912 wrote to memory of 636	1912	Invoice no. 004.exe	32
PID 1912 wrote to memory of 636	1912	Invoice no. 004.exe	32
PID 1912 wrote to memory of 636	1912	Invoice no. 004.exe	32
PID 1912 wrote to memory of 636	1912	Invoice no. 004.exe	32
PID 1912 wrote to memory of 636	1912	Invoice no. 004.exe	32
PID 1912 wrote to memory of 636	1912	Invoice no. 004.exe	32
PID 1912 wrote to memory of 636	1912	Invoice no. 004.exe	32
PID 1912 wrote to memory of 636	1912	Invoice no. 004.exe	32

C:\Users\Admin\AppData\Local\Temp\Invoice no. 004.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice no. 004.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1912
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\hpUATicOQr.exe"
  2⤵
  PID:1664
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hpUATicOQr" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFDA1.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:956
- C:\Users\Admin\AppData\Local\Temp\Invoice no. 004.exe
  "C:\Users\Admin\AppData\Local\Temp\Invoice no. 004.exe"
  2⤵
  PID:636

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\tmpFDA1.tmp

Filesize
1KB

MD5
5b58265dfde271ef410f33e3c5c5780b

SHA1
3965e6a30626c2885bbd268892314fcfe90099c9

SHA256
3d39a977de0bd25707f0b31870a258b060a64d6aea588458fb9f85d0b29a22ec

SHA512
6afb106040255eb150a7bf9b8c0b4468c582ed53d869385eaceb99398ab8b1953ca61ddf6cfa82436fe30b81b76bd738a7620d86155f2703ef94922b4725e8d0

Download Submit
memory/636-69-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/636-67-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/636-65-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/636-64-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1664-72-0x000000006E460000-0x000000006EA0B000-memory.dmp

Filesize
5.7MB

Download
memory/1912-54-0x0000000000EB0000-0x0000000000F54000-memory.dmp

Filesize
656KB

Download
memory/1912-63-0x0000000004B10000-0x0000000004B3C000-memory.dmp

Filesize
176KB

Download
memory/1912-58-0x000000000A500000-0x000000000A576000-memory.dmp

Filesize
472KB

Download
memory/1912-57-0x0000000000660000-0x000000000066A000-memory.dmp

Filesize
40KB

Download
memory/1912-56-0x0000000000510000-0x0000000000526000-memory.dmp

Filesize
88KB

Download
memory/1912-55-0x0000000076031000-0x0000000076033000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads