masslogger | b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	hostlasco.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	hostlasco.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe

Loads dropped DLL 2 IoCs

pid	Process
1516	cmd.exe
1996	hostlasco.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	api.ipify.org

Maps connected drives based on registry 3 TTPs 4 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	hostlasco.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	hostlasco.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1008 set thread context of 1788	1008	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe	29
PID 1996 set thread context of 612	1996	hostlasco.exe	37

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

pid	Process
1336	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
812	timeout.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1008	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe
1008	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe
1788	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe
1788	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe
1788	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe
1788	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe
1996	hostlasco.exe
1996	hostlasco.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1008	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe
Token: SeDebugPrivilege	1788	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe
Token: SeDebugPrivilege	1996	hostlasco.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 1008 wrote to memory of 1788	1008	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe	29
PID 1008 wrote to memory of 1788	1008	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe	29
PID 1008 wrote to memory of 1788	1008	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe	29
PID 1008 wrote to memory of 1788	1008	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe	29
PID 1008 wrote to memory of 1788	1008	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe	29
PID 1008 wrote to memory of 1788	1008	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe	29
PID 1008 wrote to memory of 1788	1008	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe	29
PID 1008 wrote to memory of 1788	1008	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe	29
PID 1008 wrote to memory of 1788	1008	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe	29
PID 1788 wrote to memory of 1088	1788	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe	30
PID 1788 wrote to memory of 1088	1788	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe	30
PID 1788 wrote to memory of 1088	1788	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe	30
PID 1788 wrote to memory of 1088	1788	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe	30
PID 1788 wrote to memory of 1516	1788	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe	32
PID 1788 wrote to memory of 1516	1788	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe	32
PID 1788 wrote to memory of 1516	1788	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe	32
PID 1788 wrote to memory of 1516	1788	b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe	32
PID 1088 wrote to memory of 1336	1088	cmd.exe	34
PID 1088 wrote to memory of 1336	1088	cmd.exe	34
PID 1088 wrote to memory of 1336	1088	cmd.exe	34
PID 1088 wrote to memory of 1336	1088	cmd.exe	34
PID 1516 wrote to memory of 812	1516	cmd.exe	35
PID 1516 wrote to memory of 812	1516	cmd.exe	35
PID 1516 wrote to memory of 812	1516	cmd.exe	35
PID 1516 wrote to memory of 812	1516	cmd.exe	35
PID 1516 wrote to memory of 1996	1516	cmd.exe	36
PID 1516 wrote to memory of 1996	1516	cmd.exe	36
PID 1516 wrote to memory of 1996	1516	cmd.exe	36
PID 1516 wrote to memory of 1996	1516	cmd.exe	36
PID 1996 wrote to memory of 612	1996	hostlasco.exe	37
PID 1996 wrote to memory of 612	1996	hostlasco.exe	37
PID 1996 wrote to memory of 612	1996	hostlasco.exe	37
PID 1996 wrote to memory of 612	1996	hostlasco.exe	37
PID 1996 wrote to memory of 612	1996	hostlasco.exe	37
PID 1996 wrote to memory of 612	1996	hostlasco.exe	37
PID 1996 wrote to memory of 612	1996	hostlasco.exe	37
PID 1996 wrote to memory of 612	1996	hostlasco.exe	37
PID 1996 wrote to memory of 612	1996	hostlasco.exe	37

C:\Users\Admin\AppData\Local\Temp\b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe
"C:\Users\Admin\AppData\Local\Temp\b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1008
- C:\Users\Admin\AppData\Local\Temp\b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe
  "C:\Users\Admin\AppData\Local\Temp\b78442ab204b03b70021c64336e5b1481ef2ecda74d6d6cead0af13fc1d9b44e.exe"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1788
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn hostlasco.exe /tr '"C:\Users\Admin\AppData\Local\Temp\submaild\hostlasco.exe"' & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1088
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn hostlasco.exe /tr '"C:\Users\Admin\AppData\Local\Temp\submaild\hostlasco.exe"'
      4⤵
      Creates scheduled task(s)
      PID:1336
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp2DA6.tmp.bat""
    3⤵
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:1516
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      Delays execution with timeout.exe
      PID:812
  - - C:\Users\Admin\AppData\Local\Temp\submaild\hostlasco.exe
      "C:\Users\Admin\AppData\Local\Temp\submaild\hostlasco.exe"
      4⤵
      Executes dropped EXE
      Checks BIOS information in registry
      Loads dropped DLL
      Maps connected drives based on registry
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1996
    - - C:\Users\Admin\AppData\Local\Temp\submaild\hostlasco.exe
        
        "C:\Users\Admin\AppData\Local\Temp\submaild\hostlasco.exe"
        5⤵
        Executes dropped EXE
        
        PID:612

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

Persistence

Scheduled Task

Privilege Escalation

Scheduled Task

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery