1cfe3719a4ff6302793eb19ac8e4fa454f653945f77e60e2eebdf75a78d4f485

General

Target

1cfe3719a4ff6302793eb19ac8e4fa454f653945f77e60e2eebdf75a78d4f485.xls
Size

95KB
MD5

c25105b912d2cb7316d80e2fb9058462
SHA1

9cf27075b8d4025d606df8bc4fc1b06620cd9c19
SHA256

1cfe3719a4ff6302793eb19ac8e4fa454f653945f77e60e2eebdf75a78d4f485
SHA512

fad1436614e8253ae63f1e048d981c96fa32cbdeeb0b67a0061cf78951134bee5dde97b3f0f88f41d53d66cd62dffcca4b6a25647035fc260ff5e8642cd2e532

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://www.sunflowerlaboratory.in/fonts/79Tq62ly/

xlm40.dropper

http://dirigent.co.uk/vardagsekonomi/iC36jJ4J1cf/

xlm40.dropper

http://agtrade.hu/images/kiQYmOs2tSKq/

xlm40.dropper

https://www.zachboyle.com/wp-admin/EA470ZrTGNkuA/

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	3376	4104	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3464	4104	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3880	4104	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4916	4104	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

4104 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

4104 EXCEL.EXE
4104 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4104	EXCEL.EXE
4104	EXCEL.EXE
4104	EXCEL.EXE
4104	EXCEL.EXE
4104	EXCEL.EXE
4104	EXCEL.EXE
4104	EXCEL.EXE
4104	EXCEL.EXE
4104	EXCEL.EXE
4104	EXCEL.EXE
4104	EXCEL.EXE
4104	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4104 wrote to memory of 3376	4104	EXCEL.EXE	regsvr32.exe
PID 4104 wrote to memory of 3376	4104	EXCEL.EXE	regsvr32.exe
PID 4104 wrote to memory of 3464	4104	EXCEL.EXE	regsvr32.exe
PID 4104 wrote to memory of 3464	4104	EXCEL.EXE	regsvr32.exe
PID 4104 wrote to memory of 3880	4104	EXCEL.EXE	regsvr32.exe
PID 4104 wrote to memory of 3880	4104	EXCEL.EXE	regsvr32.exe
PID 4104 wrote to memory of 4916	4104	EXCEL.EXE	regsvr32.exe
PID 4104 wrote to memory of 4916	4104	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\1cfe3719a4ff6302793eb19ac8e4fa454f653945f77e60e2eebdf75a78d4f485.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:4104

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci1.ocx
2⤵
- Process spawned unexpected child process
PID:3376

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
2⤵
- Process spawned unexpected child process
PID:3464

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
2⤵
- Process spawned unexpected child process
PID:3880

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
2⤵
- Process spawned unexpected child process
PID:4916

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

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Downloads

memory/3376-264-0x0000000000000000-mapping.dmp

Download
memory/3464-265-0x0000000000000000-mapping.dmp

Download
memory/3880-266-0x0000000000000000-mapping.dmp

Download
memory/4104-114-0x00007FF837C10000-0x00007FF837C20000-memory.dmp

Filesize
64KB

Download
memory/4104-115-0x00007FF837C10000-0x00007FF837C20000-memory.dmp

Filesize
64KB

Download
memory/4104-116-0x00007FF837C10000-0x00007FF837C20000-memory.dmp

Filesize
64KB

Download
memory/4104-117-0x00007FF837C10000-0x00007FF837C20000-memory.dmp

Filesize
64KB

Download
memory/4104-126-0x00007FF8341A0000-0x00007FF8341B0000-memory.dmp

Filesize
64KB

Download
memory/4104-127-0x00007FF8341A0000-0x00007FF8341B0000-memory.dmp

Filesize
64KB

Download
memory/4916-269-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads