6096e290d2b9c5d1979cba04455c7dc9c57b65fd2e5fe96c3f5a551e574071e6

General

Target
31cabbb7_by_Libranalysis.xlsm
Size 183KB
Sample210525-ek23evntsa
SHA256 6096e290d2b9c5d1979cba04455c7dc9c57b65fd2e5fe96c3f5a551e574071e6
MD5 31cabbb731c94515169c96728878dfcf
SHA1 9e6aa6a84202ea802587d894f5d0292355660839
SHA512 2c0c23b4e5366123cc66bf66d82577bf4be06d33bcd6270d0e80d4f30b87560df02db1fc933351218c4b23f22233c1fc726f5471346bb9dc9a7792bd9fede167
MD5 SHA1 SHA512

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 3 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	3180	3992	rundll32.exe	68
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2372	3992	rundll32.exe	68
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2156	3992	rundll32.exe	68

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 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

pid	Process
3992	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
3992	EXCEL.EXE
3992	EXCEL.EXE
3992	EXCEL.EXE
3992	EXCEL.EXE
3992	EXCEL.EXE
3992	EXCEL.EXE
3992	EXCEL.EXE
3992	EXCEL.EXE
3992	EXCEL.EXE
3992	EXCEL.EXE
3992	EXCEL.EXE
3992	EXCEL.EXE
3992	EXCEL.EXE
3992	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3992 wrote to memory of 3180	3992	EXCEL.EXE	79
PID 3992 wrote to memory of 3180	3992	EXCEL.EXE	79
PID 3992 wrote to memory of 2372	3992	EXCEL.EXE	80
PID 3992 wrote to memory of 2372	3992	EXCEL.EXE	80
PID 3992 wrote to memory of 2156	3992	EXCEL.EXE	81
PID 3992 wrote to memory of 2156	3992	EXCEL.EXE	81

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\31cabbb7_by_Libranalysis.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3992
- C:\Windows\SYSTEM32\rundll32.exe
  rundll32 ..\Hikos.hertolo,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:3180
- C:\Windows\SYSTEM32\rundll32.exe
  rundll32 ..\Hikos.hertolo1,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:2372
- C:\Windows\SYSTEM32\rundll32.exe
  rundll32 ..\Hikos.hertolo2,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:2156

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/3992-114-0x00007FF754080000-0x00007FF757636000-memory.dmp

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memory/3992-115-0x00007FFDCA390000-0x00007FFDCA3A0000-memory.dmp

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memory/3992-116-0x00007FFDCA390000-0x00007FFDCA3A0000-memory.dmp

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memory/3992-117-0x00007FFDCA390000-0x00007FFDCA3A0000-memory.dmp

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memory/3992-118-0x00007FFDCA390000-0x00007FFDCA3A0000-memory.dmp

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memory/3992-122-0x00007FFDCA390000-0x00007FFDCA3A0000-memory.dmp

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memory/3992-121-0x00007FFDEAE20000-0x00007FFDEBF0E000-memory.dmp

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memory/3992-123-0x000001B5AB890000-0x000001B5AD785000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads