68ef8ffa46a0d0ea1a981ad7bcfbaf1c7ad2680ddfac2a2d4b0822a23aaf4247

General

Target

subscription_1618334083.xlsb
Size

182KB
MD5

9d8889711256df5fba21cac45ff2be6e
SHA1

72c600faaaf2168a46922b101589dff2c3579264
SHA256

68ef8ffa46a0d0ea1a981ad7bcfbaf1c7ad2680ddfac2a2d4b0822a23aaf4247
SHA512

7e1874bbae50d15de0b0dece24f0122ec473f1d3ea0f21ba47b25dd941fe2512800fef54047752f8f5808db586c75ef73e770d6b4b4c67aded4613979074cca7

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 1 IoCs

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

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3056	4656	cmd.exe	67

Loads dropped DLL 1 IoCs

pid	Process
4308	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4344	4308	WerFault.exe	84

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

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

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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4656	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 15 IoCs

pid	Process
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe
4344	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	4344	WerFault.exe
Token: SeBackupPrivilege	4344	WerFault.exe
Token: SeDebugPrivilege	4344	WerFault.exe

Suspicious use of SetWindowsHookEx 20 IoCs

pid	Process
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4656 wrote to memory of 3056	4656	EXCEL.EXE	80
PID 4656 wrote to memory of 3056	4656	EXCEL.EXE	80
PID 3056 wrote to memory of 3848	3056	cmd.exe	82
PID 3056 wrote to memory of 3848	3056	cmd.exe	82
PID 3056 wrote to memory of 4304	3056	cmd.exe	83
PID 3056 wrote to memory of 4304	3056	cmd.exe	83
PID 4304 wrote to memory of 4308	4304	rundll32.exe	84
PID 4304 wrote to memory of 4308	4304	rundll32.exe	84
PID 4304 wrote to memory of 4308	4304	rundll32.exe	84

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\subscription_1618334083.xlsb"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4656
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c certutil -decode %PUBLIC%\31927.dpi %PUBLIC%\31927.pdo && rundll32 %PUBLIC%\31927.pdo,DF1
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of WriteProcessMemory
  PID:3056
- - C:\Windows\system32\certutil.exe
    certutil -decode C:\Users\Public\31927.dpi C:\Users\Public\31927.pdo
    3⤵
    PID:3848
- - C:\Windows\system32\rundll32.exe
    rundll32 C:\Users\Public\31927.pdo,DF1
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4304
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32 C:\Users\Public\31927.pdo,DF1
      4⤵
      Loads dropped DLL
      PID:4308
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4308 -s 812
        5⤵
        Program crash
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:4344

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/4308-186-0x0000000000E00000-0x0000000000EAE000-memory.dmp

Filesize
696KB

Download
memory/4656-118-0x00007FFA38500000-0x00007FFA38510000-memory.dmp

Filesize
64KB

Download
memory/4656-119-0x00007FFA38500000-0x00007FFA38510000-memory.dmp

Filesize
64KB

Download
memory/4656-122-0x00007FFA588C0000-0x00007FFA599AE000-memory.dmp

Filesize
16.9MB

Download
memory/4656-123-0x000001CDAEEA0000-0x000001CDB0D95000-memory.dmp

Filesize
31.0MB

Download
memory/4656-114-0x00007FF79B800000-0x00007FF79EDB6000-memory.dmp

Filesize
53.7MB

Download
memory/4656-117-0x00007FFA38500000-0x00007FFA38510000-memory.dmp

Filesize
64KB

Download
memory/4656-116-0x00007FFA38500000-0x00007FFA38510000-memory.dmp

Filesize
64KB

Download
memory/4656-115-0x00007FFA38500000-0x00007FFA38510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads