55aefa588600554cb463bb6d52817eb189fa6d1be25323bec60488f97585e0d5

General

Target

55aefa588600554cb463bb6d52817eb189fa6d1be25323bec60488f97585e0d5.xls
Size

95KB
MD5

417060fa09d0df8a9efccee4b512c8fb
SHA1

82599be93f8c6f36c0a61d20b8fb04dba628a36e
SHA256

55aefa588600554cb463bb6d52817eb189fa6d1be25323bec60488f97585e0d5
SHA512

f9f3d20b9851b142b80fdbc21ce64cf27aa18123910898d420dd3c4196ee242654509db2d8e9ed30906d95659b81da272282fe28859fe9e2b4490de880b227bd

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	4908	1140	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4924	1140	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4940	1140	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	5012	1140	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 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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	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

1140 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
1140	EXCEL.EXE
1140	EXCEL.EXE
1140	EXCEL.EXE
1140	EXCEL.EXE
1140	EXCEL.EXE
1140	EXCEL.EXE
1140	EXCEL.EXE
1140	EXCEL.EXE
1140	EXCEL.EXE
1140	EXCEL.EXE
1140	EXCEL.EXE
1140	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1140 wrote to memory of 4908	1140	EXCEL.EXE	regsvr32.exe
PID 1140 wrote to memory of 4908	1140	EXCEL.EXE	regsvr32.exe
PID 1140 wrote to memory of 4924	1140	EXCEL.EXE	regsvr32.exe
PID 1140 wrote to memory of 4924	1140	EXCEL.EXE	regsvr32.exe
PID 1140 wrote to memory of 4940	1140	EXCEL.EXE	regsvr32.exe
PID 1140 wrote to memory of 4940	1140	EXCEL.EXE	regsvr32.exe
PID 1140 wrote to memory of 5012	1140	EXCEL.EXE	regsvr32.exe
PID 1140 wrote to memory of 5012	1140	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\55aefa588600554cb463bb6d52817eb189fa6d1be25323bec60488f97585e0d5.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1140

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci1.ocx
2⤵
- Process spawned unexpected child process
PID:4908

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
2⤵
- Process spawned unexpected child process
PID:4924

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
2⤵
- Process spawned unexpected child process
PID:4940

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
2⤵
- Process spawned unexpected child process
PID:5012

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

Loading Replay Monitor...

Downloads

memory/1140-118-0x00007FFE7A3C0000-0x00007FFE7A3D0000-memory.dmp

Filesize
64KB

Download
memory/1140-119-0x00007FFE7A3C0000-0x00007FFE7A3D0000-memory.dmp

Filesize
64KB

Download
memory/1140-120-0x00007FFE7A3C0000-0x00007FFE7A3D0000-memory.dmp

Filesize
64KB

Download
memory/1140-121-0x00007FFE7A3C0000-0x00007FFE7A3D0000-memory.dmp

Filesize
64KB

Download
memory/1140-130-0x00007FFE768A0000-0x00007FFE768B0000-memory.dmp

Filesize
64KB

Download
memory/1140-131-0x00007FFE768A0000-0x00007FFE768B0000-memory.dmp

Filesize
64KB

Download
memory/4908-257-0x0000000000000000-mapping.dmp

Download
memory/4924-258-0x0000000000000000-mapping.dmp

Download
memory/4940-259-0x0000000000000000-mapping.dmp

Download
memory/5012-262-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads