7502d81e1850ddeca8f2a9b2b5b986b1402710ac10ba7247fa34dbde1e9f1399

General

Target

?i=1uaozqgmo.xlsm
Size

83KB
MD5

8d09ec7797984a737034a20bb36f7d29
SHA1

6629a4afb00ae6314148a4bd26e4bd6bef13cfdf
SHA256

7502d81e1850ddeca8f2a9b2b5b986b1402710ac10ba7247fa34dbde1e9f1399
SHA512

4d944f5bfedae36ecd8f42a6613529647d638fbddd1af6a5d3a3ae6b7a4289b5d051e1d6cd25d58a14e5efd88b071438e578bafc166e07851e0e044567bcb684

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://mail.emilyanncain.com/cgi-bin/A7NT3ENvn/

Signatures

Process spawned unexpected child process 1 IoCs

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

Processes:

rundll32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3960	2928	rundll32.exe	EXCEL.EXE

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

Processes:

EXCEL.EXE

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

2928 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
2928	EXCEL.EXE
2928	EXCEL.EXE
2928	EXCEL.EXE
2928	EXCEL.EXE
2928	EXCEL.EXE
2928	EXCEL.EXE
2928	EXCEL.EXE
2928	EXCEL.EXE
2928	EXCEL.EXE
2928	EXCEL.EXE
2928	EXCEL.EXE
2928	EXCEL.EXE

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 2928 wrote to memory of 3960	2928	EXCEL.EXE	rundll32.exe
PID 2928 wrote to memory of 3960	2928	EXCEL.EXE	rundll32.exe
PID 2928 wrote to memory of 3960	2928	EXCEL.EXE	rundll32.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\_i=1uaozqgmo.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2928
- C:\Windows\SysWow64\rundll32.exe
  C:\Windows\SysWow64\rundll32.exe ..\erum.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
  2⤵
  - Process spawned unexpected child process
  PID:3960

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

C:\Users\Admin\erum.ocx

Filesize
7KB

MD5
e91cd7bacfb3abed6802b39c80476127

SHA1
58456194aa421276903f56697d0dcb726b382846

SHA256
884b9474ac5ad85e41082628689579115648baf259f222b4c362afb99d1a0fb1

SHA512
392076e05470eb90c76fc16067279e4a426790de24785889393abfd53f19cd06340ef5e03edae1e98e0be220223c9da4f415ae3a7bc5aa085be837ef975bdfc9

Download Submit
memory/2928-130-0x00007FFA6B6D0000-0x00007FFA6B6E0000-memory.dmp

Filesize
64KB

Download
memory/2928-131-0x00007FFA6B6D0000-0x00007FFA6B6E0000-memory.dmp

Filesize
64KB

Download
memory/2928-132-0x00007FFA6B6D0000-0x00007FFA6B6E0000-memory.dmp

Filesize
64KB

Download
memory/2928-133-0x00007FFA6B6D0000-0x00007FFA6B6E0000-memory.dmp

Filesize
64KB

Download
memory/2928-134-0x00007FFA6B6D0000-0x00007FFA6B6E0000-memory.dmp

Filesize
64KB

Download
memory/2928-135-0x00007FFA68DC0000-0x00007FFA68DD0000-memory.dmp

Filesize
64KB

Download
memory/2928-136-0x00007FFA68DC0000-0x00007FFA68DD0000-memory.dmp

Filesize
64KB

Download
memory/3960-137-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads