aaa32ff3e41c61fe828f0850e702f5ed7ffd6177c4bf80ed15324525537f44cd

General

Target
plan-515372324.xlsb
Size 155KB
Sample210629-ya5cdesfp2
SHA256 aaa32ff3e41c61fe828f0850e702f5ed7ffd6177c4bf80ed15324525537f44cd
MD5 08e52afbefa423fb9f1ea0af88a4880e
SHA1 2d688dfee28f75553bc1d3633f891d2e70e0408b
SHA512 7a5400ec826ecaa0fa6a8beb9022bd9e918f11cf97e57d747477720889f7203af983620e2f7b543fb1ff5cc5a9eff13447d6353506c862dfe2ebd23b7a63dee8
MD5 SHA1 SHA512

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper
https://khangland.pro/v8gEDeSB/sun.html
xlm40.dropper
https://jaipurbynite.com/stLdQs9R53/sun.htm

Signatures

Process spawned unexpected child process 2 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	3148	3236	regsvr32.exe	67
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2192	3236	regsvr32.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 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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	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
3236	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3236	EXCEL.EXE
3236	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
3236	EXCEL.EXE
3236	EXCEL.EXE
3236	EXCEL.EXE
3236	EXCEL.EXE
3236	EXCEL.EXE
3236	EXCEL.EXE
3236	EXCEL.EXE
3236	EXCEL.EXE
3236	EXCEL.EXE
3236	EXCEL.EXE
3236	EXCEL.EXE
3236	EXCEL.EXE
3236	EXCEL.EXE
3236	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3236 wrote to memory of 3800	3236	EXCEL.EXE	75
PID 3236 wrote to memory of 3800	3236	EXCEL.EXE	75
PID 3236 wrote to memory of 3148	3236	EXCEL.EXE	79
PID 3236 wrote to memory of 3148	3236	EXCEL.EXE	79
PID 3236 wrote to memory of 2192	3236	EXCEL.EXE	80
PID 3236 wrote to memory of 2192	3236	EXCEL.EXE	80

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\plan-515372324.xlsb"
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:3236
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:3800
- C:\Windows\SYSTEM32\regsvr32.exe
  regsvr32 ..\palpy1.dll
  2⤵
  - Process spawned unexpected child process
  PID:3148
- C:\Windows\SYSTEM32\regsvr32.exe
  regsvr32 ..\palpy2.dll
  2⤵
  - Process spawned unexpected child process
  PID:2192

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/3236-114-0x00007FF6FE240000-0x00007FF7017F6000-memory.dmp

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memory/3236-115-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

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memory/3236-116-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

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memory/3236-117-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

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memory/3236-118-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

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memory/3236-119-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

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memory/3236-122-0x00007FFA28EA0000-0x00007FFA29F8E000-memory.dmp

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memory/3236-123-0x00007FFA26EE0000-0x00007FFA28DD5000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads