b2fa4993616280dbd6a5cf26c7f321f2c041c46d999babd34746cf13dd7bce22

General

Target

b2fa4993616280dbd6a5cf26c7f321f2c041c46d999babd34746cf13dd7bce22.xls
Size

95KB
MD5

cc7963491977bac770e0d877556cfaae
SHA1

73ceecb3cbdf598bbe414d94bc47833c297a5f98
SHA256

b2fa4993616280dbd6a5cf26c7f321f2c041c46d999babd34746cf13dd7bce22
SHA512

74e68306af89ae4864294d7ee70c5f65681197a2cf74461803ec677ebe47792ac06d2589e11304fdde87b86b9c517f3a9ebcf51cdee0656e754dceaf84f2d053

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://edoraseguros.com.br/cgi-bin/jQNq9wlH1GXU/

xlm40.dropper

http://earthmach.co.za/libraries/tWkZh9YrXbTd6IeX/

xlm40.dropper

http://finvest.rs/wp-admin/Hr9nVNTIHgw59S/

xlm40.dropper

http://efverstedt.se/5jjaV/w7fLEHJ20xn0qD/

Signatures

Process spawned unexpected child process 4 IoCs

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

Processes:

regsvr32.exeregsvr32.exeregsvr32.exeregsvr32.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	3948	2172	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3784	2172	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3872	2172	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3588	2172	regsvr32.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 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

2172 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

2172 EXCEL.EXE
2172 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
2172	EXCEL.EXE
2172	EXCEL.EXE
2172	EXCEL.EXE
2172	EXCEL.EXE
2172	EXCEL.EXE
2172	EXCEL.EXE
2172	EXCEL.EXE
2172	EXCEL.EXE
2172	EXCEL.EXE
2172	EXCEL.EXE
2172	EXCEL.EXE
2172	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 2172 wrote to memory of 3948	2172	EXCEL.EXE	regsvr32.exe
PID 2172 wrote to memory of 3948	2172	EXCEL.EXE	regsvr32.exe
PID 2172 wrote to memory of 3784	2172	EXCEL.EXE	regsvr32.exe
PID 2172 wrote to memory of 3784	2172	EXCEL.EXE	regsvr32.exe
PID 2172 wrote to memory of 3872	2172	EXCEL.EXE	regsvr32.exe
PID 2172 wrote to memory of 3872	2172	EXCEL.EXE	regsvr32.exe
PID 2172 wrote to memory of 3588	2172	EXCEL.EXE	regsvr32.exe
PID 2172 wrote to memory of 3588	2172	EXCEL.EXE	regsvr32.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\b2fa4993616280dbd6a5cf26c7f321f2c041c46d999babd34746cf13dd7bce22.xls"
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:2172

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci1.ocx
2⤵
- Process spawned unexpected child process
PID:3948

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
2⤵
- Process spawned unexpected child process
PID:3784

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
2⤵
- Process spawned unexpected child process
PID:3872

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
2⤵
- Process spawned unexpected child process
PID:3588

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/2172-308-0x00007FF9C3760000-0x00007FF9C3770000-memory.dmp

Filesize
64KB

Download
memory/2172-117-0x00007FF9C3760000-0x00007FF9C3770000-memory.dmp

Filesize
64KB

Download
memory/2172-118-0x00007FF9C3760000-0x00007FF9C3770000-memory.dmp

Filesize
64KB

Download
memory/2172-119-0x00007FF9C3760000-0x00007FF9C3770000-memory.dmp

Filesize
64KB

Download
memory/2172-128-0x00007FF9C09E0000-0x00007FF9C09F0000-memory.dmp

Filesize
64KB

Download
memory/2172-129-0x00007FF9C09E0000-0x00007FF9C09F0000-memory.dmp

Filesize
64KB

Download
memory/2172-311-0x00007FF9C3760000-0x00007FF9C3770000-memory.dmp

Filesize
64KB

Download
memory/2172-310-0x00007FF9C3760000-0x00007FF9C3770000-memory.dmp

Filesize
64KB

Download
memory/2172-309-0x00007FF9C3760000-0x00007FF9C3770000-memory.dmp

Filesize
64KB

Download
memory/2172-116-0x00007FF9C3760000-0x00007FF9C3770000-memory.dmp

Filesize
64KB

Download
memory/3588-271-0x0000000000000000-mapping.dmp

Download
memory/3784-269-0x0000000000000000-mapping.dmp

Download
memory/3872-270-0x0000000000000000-mapping.dmp

Download
memory/3948-268-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads