ae4c37f20738b2bc766ca1b1437dd27be15c5a86e663f8ce3fc8be6762483305

General

Target

ae4c37f20738b2bc766ca1b1437dd27be15c5a86e663f8ce3fc8be6762483305.xlsm
Size

84KB
MD5

ca40024e1f730cb8775a13d96f73b734
SHA1

fcb6c0e0fed10e795558bd3242d18f1f47245991
SHA256

ae4c37f20738b2bc766ca1b1437dd27be15c5a86e663f8ce3fc8be6762483305
SHA512

1134b50655628f2470d987e1e3d298378485baa73d7c0daeeb35b3993869dff3740568468d68b19185f5489f82682c741745c7919a738019179bfdf5039fc9e4

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://test.la-boticaria.com/wp-content/xAQZIPYs1tavxAz/

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	1048	3544	rundll32.exe	EXCEL.EXE

Blocklisted process makes network request 1 IoCs

Processes:

rundll32.exe

flow pid process

43 3696 rundll32.exe
Downloads MZ/PE file
Loads dropped DLL 2 IoCs

Processes:

rundll32.exerundll32.exe

pid process

1048 rundll32.exe
1392 rundll32.exe
Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\Uczrxfemyr\fylofchuihwoqv.lfq rundll32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

flow	pid	process
43	3696	rundll32.exe

pid	process
1048	rundll32.exe
1392	rundll32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Uczrxfemyr\fylofchuihwoqv.lfq	rundll32.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 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

Processes:

EXCEL.EXE

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

Processes:

EXCEL.EXE

pid process

3544 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

3696 rundll32.exe
3696 rundll32.exe

pid	process
3696	rundll32.exe
3696	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
3544	EXCEL.EXE
3544	EXCEL.EXE
3544	EXCEL.EXE
3544	EXCEL.EXE
3544	EXCEL.EXE
3544	EXCEL.EXE
3544	EXCEL.EXE
3544	EXCEL.EXE
3544	EXCEL.EXE
3544	EXCEL.EXE
3544	EXCEL.EXE
3544	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exerundll32.exe

description	pid	process	target process
PID 3544 wrote to memory of 1048	3544	EXCEL.EXE	rundll32.exe
PID 3544 wrote to memory of 1048	3544	EXCEL.EXE	rundll32.exe
PID 3544 wrote to memory of 1048	3544	EXCEL.EXE	rundll32.exe
PID 1048 wrote to memory of 1392	1048	rundll32.exe	rundll32.exe
PID 1048 wrote to memory of 1392	1048	rundll32.exe	rundll32.exe
PID 1048 wrote to memory of 1392	1048	rundll32.exe	rundll32.exe
PID 1392 wrote to memory of 3864	1392	rundll32.exe	rundll32.exe
PID 1392 wrote to memory of 3864	1392	rundll32.exe	rundll32.exe
PID 1392 wrote to memory of 3864	1392	rundll32.exe	rundll32.exe
PID 3864 wrote to memory of 3696	3864	rundll32.exe	rundll32.exe
PID 3864 wrote to memory of 3696	3864	rundll32.exe	rundll32.exe
PID 3864 wrote to memory of 3696	3864	rundll32.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\ae4c37f20738b2bc766ca1b1437dd27be15c5a86e663f8ce3fc8be6762483305.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3544

C:\Windows\SysWow64\rundll32.exe
C:\Windows\SysWow64\rundll32.exe ..\einl.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1048

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\einl.ocx",DllRegisterServer
3⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1392

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Uczrxfemyr\fylofchuihwoqv.lfq",MOkPWsDqXCkYYtY
4⤵
- Suspicious use of WriteProcessMemory
PID:3864

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Uczrxfemyr\fylofchuihwoqv.lfq",DllRegisterServer
5⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
PID:3696

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\einl.ocx

MD5
4ec833cec47e0e1f2138f6e558615517

SHA1
31b49458c9dd32b800b9dc056d29d70040857fcb

SHA256
c981e06aaf25e578c18f21c6875663aa4dccc44c325826ea82e699639bc48392

SHA512
dbc9e6ae3b77ea2670b1860c39f88a3f2dfce89d4630b56d804f151ff80e22d6c63f5262efb5f88afc38f6c4d2bab4f6004d6e8d5afd4b57421160c16fe61300

Download Submit
\Users\Admin\einl.ocx

MD5
4ec833cec47e0e1f2138f6e558615517

SHA1
31b49458c9dd32b800b9dc056d29d70040857fcb

SHA256
c981e06aaf25e578c18f21c6875663aa4dccc44c325826ea82e699639bc48392

SHA512
dbc9e6ae3b77ea2670b1860c39f88a3f2dfce89d4630b56d804f151ff80e22d6c63f5262efb5f88afc38f6c4d2bab4f6004d6e8d5afd4b57421160c16fe61300

Download Submit
\Users\Admin\einl.ocx

MD5
4ec833cec47e0e1f2138f6e558615517

SHA1
31b49458c9dd32b800b9dc056d29d70040857fcb

SHA256
c981e06aaf25e578c18f21c6875663aa4dccc44c325826ea82e699639bc48392

SHA512
dbc9e6ae3b77ea2670b1860c39f88a3f2dfce89d4630b56d804f151ff80e22d6c63f5262efb5f88afc38f6c4d2bab4f6004d6e8d5afd4b57421160c16fe61300

Download Submit
memory/1048-263-0x0000000000000000-mapping.dmp

Download
memory/1392-268-0x0000000000000000-mapping.dmp

Download
memory/3544-119-0x00000226D8300000-0x00000226D8302000-memory.dmp

Filesize
8KB

Download
memory/3544-121-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp

Filesize
64KB

Download
memory/3544-122-0x00000226D8300000-0x00000226D8302000-memory.dmp

Filesize
8KB

Download
memory/3544-128-0x00007FF937180000-0x00007FF937190000-memory.dmp

Filesize
64KB

Download
memory/3544-129-0x00007FF937180000-0x00007FF937190000-memory.dmp

Filesize
64KB

Download
memory/3544-120-0x00000226D8300000-0x00000226D8302000-memory.dmp

Filesize
8KB

Download
memory/3544-115-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp

Filesize
64KB

Download
memory/3544-118-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp

Filesize
64KB

Download
memory/3544-117-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp

Filesize
64KB

Download
memory/3544-116-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp

Filesize
64KB

Download
memory/3696-284-0x0000000000000000-mapping.dmp

Download
memory/3864-281-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads