77c83543a8b258d3bda52528197f56418d2ae17b2b710c9dbf87aae59e5d0f35

General

Target
e42c61b4_by_Libranalysis.xlsm
Size 183KB
Sample210524-41hakqt2nj
SHA256 77c83543a8b258d3bda52528197f56418d2ae17b2b710c9dbf87aae59e5d0f35
MD5 e42c61b4b6a620f3cbe106210b482fa0
SHA1 00feb1d9535505553a71ddbab3845fdcf0644077
SHA512 2c520ba910dfd487ff570ccdc0d98474a41ec2d9b581075376812a577dbec6395fde816db97ad487c899f0ded0995ec9a61a8644dd6842100901112913d3198b
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	3092	3952	rundll32.exe	67
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3260	3952	rundll32.exe	67
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3848	3952	rundll32.exe	67

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
3952	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3952 wrote to memory of 3092	3952	EXCEL.EXE	79
PID 3952 wrote to memory of 3092	3952	EXCEL.EXE	79
PID 3952 wrote to memory of 3260	3952	EXCEL.EXE	80
PID 3952 wrote to memory of 3260	3952	EXCEL.EXE	80
PID 3952 wrote to memory of 3848	3952	EXCEL.EXE	81
PID 3952 wrote to memory of 3848	3952	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\e42c61b4_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:3952
- C:\Windows\SYSTEM32\rundll32.exe
  rundll32 ..\Hikos.hertolo,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:3092
- C:\Windows\SYSTEM32\rundll32.exe
  rundll32 ..\Hikos.hertolo1,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:3260
- C:\Windows\SYSTEM32\rundll32.exe
  rundll32 ..\Hikos.hertolo2,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:3848

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/3952-114-0x00007FF77DB50000-0x00007FF781106000-memory.dmp

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memory/3952-115-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

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memory/3952-116-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

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memory/3952-117-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

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memory/3952-118-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

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memory/3952-119-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

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memory/3952-122-0x00007FFA28EE0000-0x00007FFA29FCE000-memory.dmp

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memory/3952-123-0x00007FFA26F30000-0x00007FFA28E25000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads