1db259b0063d26f9af684e7246d336250e289514a4e900eab1337ee9981a866b

General

Target

1db259b0063d26f9af684e7246d336250e289514a4e900eab1337ee9981a866b.xls
Size

113KB
MD5

1db77f0d16e44a513d941c17e895dd02
SHA1

a8451288d8309179bb580d9d6949ee23f7a24eaf
SHA256

1db259b0063d26f9af684e7246d336250e289514a4e900eab1337ee9981a866b
SHA512

bf0df083a63711cfddb999548afa1729e0fa4a637f1d35fe1eb282c46eed9fee55ff740e593c9893f241ad28975f5b032f8fbd4a72a5d9000115c135ff0a8719

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://gaidov.bg/wp-includes/Ug/

xlm40.dropper

http://studiokrishnaproduction.com/wp-includes/3mJ/

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	3580	3728	rundll32.exe	EXCEL.EXE

Blocklisted process makes network request 1 IoCs

Processes:

rundll32.exe

flow pid process

44 3156 rundll32.exe
Downloads MZ/PE file
Loads dropped DLL 2 IoCs

Processes:

rundll32.exerundll32.exe

pid process

3580 rundll32.exe
3612 rundll32.exe
Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\Yxoadbilzqe\lasbslihpcj.hcn 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
44	3156	rundll32.exe

pid	process
3580	rundll32.exe
3612	rundll32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Yxoadbilzqe\lasbslihpcj.hcn	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

3728 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

3156 rundll32.exe
3156 rundll32.exe

pid	process
3156	rundll32.exe
3156	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
3728	EXCEL.EXE
3728	EXCEL.EXE
3728	EXCEL.EXE
3728	EXCEL.EXE
3728	EXCEL.EXE
3728	EXCEL.EXE
3728	EXCEL.EXE
3728	EXCEL.EXE
3728	EXCEL.EXE
3728	EXCEL.EXE
3728	EXCEL.EXE
3728	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exerundll32.exe

description	pid	process	target process
PID 3728 wrote to memory of 3580	3728	EXCEL.EXE	rundll32.exe
PID 3728 wrote to memory of 3580	3728	EXCEL.EXE	rundll32.exe
PID 3728 wrote to memory of 3580	3728	EXCEL.EXE	rundll32.exe
PID 3580 wrote to memory of 3612	3580	rundll32.exe	rundll32.exe
PID 3580 wrote to memory of 3612	3580	rundll32.exe	rundll32.exe
PID 3580 wrote to memory of 3612	3580	rundll32.exe	rundll32.exe
PID 3612 wrote to memory of 964	3612	rundll32.exe	rundll32.exe
PID 3612 wrote to memory of 964	3612	rundll32.exe	rundll32.exe
PID 3612 wrote to memory of 964	3612	rundll32.exe	rundll32.exe
PID 964 wrote to memory of 3156	964	rundll32.exe	rundll32.exe
PID 964 wrote to memory of 3156	964	rundll32.exe	rundll32.exe
PID 964 wrote to memory of 3156	964	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\1db259b0063d26f9af684e7246d336250e289514a4e900eab1337ee9981a866b.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3728

C:\Windows\SysWow64\rundll32.exe
C:\Windows\SysWow64\rundll32.exe ..\sun.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3580

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\sun.ocx",DllRegisterServer
3⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:3612

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Yxoadbilzqe\lasbslihpcj.hcn",IUFnSfbJ
4⤵
- Suspicious use of WriteProcessMemory
PID:964

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Yxoadbilzqe\lasbslihpcj.hcn",DllRegisterServer
5⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
PID:3156

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

3

T1082

Query Registry

2

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\sun.ocx
MD5
94f6b0e76810228edb6dfe5f6221c045

SHA1
54d2c313fbd0d098793c041e792d2a1d3dd7619e

SHA256
b975a3d6b2be53f83665f04e7a1d678f99c5c472cac44547395dfc7feaa0a7f9

SHA512
6eadcf1bc24e9b491c7bfe9a56a575089c3f84db5ac0557bce3b6a14975a788e2056585ff328380c5a455c7b42d5b52ddc4ba795a0a2fb82371da7b8952f63ed

Download Submit
\Users\Admin\sun.ocx
MD5
94f6b0e76810228edb6dfe5f6221c045

SHA1
54d2c313fbd0d098793c041e792d2a1d3dd7619e

SHA256
b975a3d6b2be53f83665f04e7a1d678f99c5c472cac44547395dfc7feaa0a7f9

SHA512
6eadcf1bc24e9b491c7bfe9a56a575089c3f84db5ac0557bce3b6a14975a788e2056585ff328380c5a455c7b42d5b52ddc4ba795a0a2fb82371da7b8952f63ed

Download Submit
\Users\Admin\sun.ocx
MD5
94f6b0e76810228edb6dfe5f6221c045

SHA1
54d2c313fbd0d098793c041e792d2a1d3dd7619e

SHA256
b975a3d6b2be53f83665f04e7a1d678f99c5c472cac44547395dfc7feaa0a7f9

SHA512
6eadcf1bc24e9b491c7bfe9a56a575089c3f84db5ac0557bce3b6a14975a788e2056585ff328380c5a455c7b42d5b52ddc4ba795a0a2fb82371da7b8952f63ed

Download Submit
memory/964-285-0x0000000000000000-mapping.dmp

Download
memory/3156-290-0x0000000000000000-mapping.dmp

Download
memory/3580-268-0x0000000000000000-mapping.dmp

Download
memory/3612-273-0x0000000000000000-mapping.dmp

Download
memory/3728-121-0x00007FFF65860000-0x00007FFF65870000-memory.dmp

Filesize
64KB

Download
memory/3728-125-0x000001BA318D0000-0x000001BA318D2000-memory.dmp

Filesize
8KB

Download
memory/3728-124-0x00007FFF65860000-0x00007FFF65870000-memory.dmp

Filesize
64KB

Download
memory/3728-122-0x000001BA318D0000-0x000001BA318D2000-memory.dmp

Filesize
8KB

Download
memory/3728-123-0x000001BA318D0000-0x000001BA318D2000-memory.dmp

Filesize
8KB

Download
memory/3728-118-0x00007FFF65860000-0x00007FFF65870000-memory.dmp

Filesize
64KB

Download
memory/3728-120-0x00007FFF65860000-0x00007FFF65870000-memory.dmp

Filesize
64KB

Download
memory/3728-119-0x00007FFF65860000-0x00007FFF65870000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads