5f2adacaf4ecb00ed24dd9dfe355307d0d6e786e40c945ad4c6d1ae3a4835d2a

Target

Doc_3744.xls
Size

62KB
MD5

47e22049644647ee854cedfe077156e7
SHA1

20ad9f47616a8272dece2ec1039a88c09412c97c
SHA256

5f2adacaf4ecb00ed24dd9dfe355307d0d6e786e40c945ad4c6d1ae3a4835d2a
SHA512

1eeb87173378f4d0e157ee42f5b28e48ff84a35b44d71f004a6180cc2bdbc09e45c071adc7ab0a94c75071fbe3ee13b939ee8cb216b6f2e06c9c24ca34dbbf1b

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://hrdgschool.com/logs.php

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 (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1292	1832	reg.exe	24
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1260	1832	rundll32.exe	24

Deletes itself 1 IoCs

pid	Process
1832	EXCEL.EXE

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1832	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1832	EXCEL.EXE
1832	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
1832	EXCEL.EXE
1832	EXCEL.EXE
1832	EXCEL.EXE
1832	EXCEL.EXE
1832	EXCEL.EXE
1832	EXCEL.EXE
1832	EXCEL.EXE
1832	EXCEL.EXE
1832	EXCEL.EXE
1832	EXCEL.EXE
1832	EXCEL.EXE
1832	EXCEL.EXE
1832	EXCEL.EXE
1832	EXCEL.EXE

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1832 wrote to memory of 1292	1832	EXCEL.EXE	29
PID 1832 wrote to memory of 1292	1832	EXCEL.EXE	29
PID 1832 wrote to memory of 1292	1832	EXCEL.EXE	29
PID 1832 wrote to memory of 1292	1832	EXCEL.EXE	29
PID 1832 wrote to memory of 1260	1832	EXCEL.EXE	33
PID 1832 wrote to memory of 1260	1832	EXCEL.EXE	33
PID 1832 wrote to memory of 1260	1832	EXCEL.EXE	33
PID 1832 wrote to memory of 1260	1832	EXCEL.EXE	33
PID 1832 wrote to memory of 1260	1832	EXCEL.EXE	33
PID 1832 wrote to memory of 1260	1832	EXCEL.EXE	33
PID 1832 wrote to memory of 1260	1832	EXCEL.EXE	33

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\Doc_3744.xls
1⤵
- Deletes itself
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1832
- C:\Windows\SysWOW64\reg.exe
  "C:\Windows\system32\reg.exe" EXPORT HKCU\Software\Microsoft\Office\14.0\Excel\Security C:\Users\Public\Documents\icSz4h.txt /y
  2⤵
  - Process spawned unexpected child process
  PID:1292
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Users\Public\Documents\f4myZ.txt,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:1260

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1048-9-0x000007FEF7880000-0x000007FEF7AFA000-memory.dmp

Filesize
2.5MB

Download
memory/1832-2-0x000000002F091000-0x000000002F094000-memory.dmp

Filesize
12KB

Download
memory/1832-3-0x00000000717F1000-0x00000000717F3000-memory.dmp

Filesize
8KB

Download
memory/1832-4-0x0000000076371000-0x0000000076373000-memory.dmp

Filesize
8KB

Download
memory/1832-5-0x000000006D151000-0x000000006D153000-memory.dmp

Filesize
8KB

Download
memory/1832-6-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download

Resubmissions

Analysis

Sharing

General