e58cd1fc646d37b9fd8040d9f7f4110bb07cbdadb1f5dd4a55413acacd33807d

General

Target

0f2bd22e41ca408211f2fcfbf4d05645.xls
Size

118KB
MD5

0f2bd22e41ca408211f2fcfbf4d05645
SHA1

e396920d9f3ddaa9c1c25325794dc1cc9d5d860f
SHA256

e58cd1fc646d37b9fd8040d9f7f4110bb07cbdadb1f5dd4a55413acacd33807d
SHA512

75de138b42573b73253ca721cc2727ffcf0e0ce4336866e8e952380b3749ec7064a65ae6984ecd0f3d00e8784f40a2e00fe00fd18b78a60b4b54e888aacdd3fb

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://www.cuneytkocas.com/wp-content/VSnofpES1wO2CcVob/

xlm40.dropper

http://towardsun.net/admin/BYGGkrYAnT/

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	4836	344	rundll32.exe	EXCEL.EXE

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

41 4848 rundll32.exe
47 4848 rundll32.exe
Downloads MZ/PE file
Loads dropped DLL 2 IoCs

Processes:

rundll32.exerundll32.exe

pid process

4836 rundll32.exe
4872 rundll32.exe
Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\Uijptwbkpmkz\kjsdzqaszskmbn.slr 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
41	4848	rundll32.exe
47	4848	rundll32.exe

pid	process
4836	rundll32.exe
4872	rundll32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Uijptwbkpmkz\kjsdzqaszskmbn.slr	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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

344 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

4848 rundll32.exe
4848 rundll32.exe

pid	process
4848	rundll32.exe
4848	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
344	EXCEL.EXE
344	EXCEL.EXE
344	EXCEL.EXE
344	EXCEL.EXE
344	EXCEL.EXE
344	EXCEL.EXE
344	EXCEL.EXE
344	EXCEL.EXE
344	EXCEL.EXE
344	EXCEL.EXE
344	EXCEL.EXE
344	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exerundll32.exe

description	pid	process	target process
PID 344 wrote to memory of 4836	344	EXCEL.EXE	rundll32.exe
PID 344 wrote to memory of 4836	344	EXCEL.EXE	rundll32.exe
PID 344 wrote to memory of 4836	344	EXCEL.EXE	rundll32.exe
PID 4836 wrote to memory of 4872	4836	rundll32.exe	rundll32.exe
PID 4836 wrote to memory of 4872	4836	rundll32.exe	rundll32.exe
PID 4836 wrote to memory of 4872	4836	rundll32.exe	rundll32.exe
PID 4872 wrote to memory of 4864	4872	rundll32.exe	rundll32.exe
PID 4872 wrote to memory of 4864	4872	rundll32.exe	rundll32.exe
PID 4872 wrote to memory of 4864	4872	rundll32.exe	rundll32.exe
PID 4864 wrote to memory of 4848	4864	rundll32.exe	rundll32.exe
PID 4864 wrote to memory of 4848	4864	rundll32.exe	rundll32.exe
PID 4864 wrote to memory of 4848	4864	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\0f2bd22e41ca408211f2fcfbf4d05645.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:344

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:4836

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:4872

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Uijptwbkpmkz\kjsdzqaszskmbn.slr",kSOQmjmwTPY
4⤵
- Suspicious use of WriteProcessMemory
PID:4864

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Uijptwbkpmkz\kjsdzqaszskmbn.slr",DllRegisterServer
5⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
PID:4848

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\sun.ocx

MD5
5c03637348efec3837962257e6c62247

SHA1
a00ca90772f35f6ea760e522685c5877960665b6

SHA256
7c621ec1eb8f988238d7ddd0ee8b6c0a056a4a46a34f79de378ab03efeecb3c5

SHA512
dbfed71c4e72863138041abb951228d2e7ce385e18e10a4e883c2aceb7b16c7d5fb48cbb1f8d00b968943b647413b955aa988995f1d3aa7964616f72d8f868b1

Download Submit
\Users\Admin\sun.ocx

MD5
5c03637348efec3837962257e6c62247

SHA1
a00ca90772f35f6ea760e522685c5877960665b6

SHA256
7c621ec1eb8f988238d7ddd0ee8b6c0a056a4a46a34f79de378ab03efeecb3c5

SHA512
dbfed71c4e72863138041abb951228d2e7ce385e18e10a4e883c2aceb7b16c7d5fb48cbb1f8d00b968943b647413b955aa988995f1d3aa7964616f72d8f868b1

Download Submit
\Users\Admin\sun.ocx

MD5
5c03637348efec3837962257e6c62247

SHA1
a00ca90772f35f6ea760e522685c5877960665b6

SHA256
7c621ec1eb8f988238d7ddd0ee8b6c0a056a4a46a34f79de378ab03efeecb3c5

SHA512
dbfed71c4e72863138041abb951228d2e7ce385e18e10a4e883c2aceb7b16c7d5fb48cbb1f8d00b968943b647413b955aa988995f1d3aa7964616f72d8f868b1

Download Submit
memory/344-118-0x00007FF836310000-0x00007FF836320000-memory.dmp

Filesize
64KB

Download
memory/344-119-0x0000021949E20000-0x0000021949E22000-memory.dmp

Filesize
8KB

Download
memory/344-120-0x0000021949E20000-0x0000021949E22000-memory.dmp

Filesize
8KB

Download
memory/344-121-0x00007FF836310000-0x00007FF836320000-memory.dmp

Filesize
64KB

Download
memory/344-122-0x0000021949E20000-0x0000021949E22000-memory.dmp

Filesize
8KB

Download
memory/344-115-0x00007FF836310000-0x00007FF836320000-memory.dmp

Filesize
64KB

Download
memory/344-117-0x00007FF836310000-0x00007FF836320000-memory.dmp

Filesize
64KB

Download
memory/344-116-0x00007FF836310000-0x00007FF836320000-memory.dmp

Filesize
64KB

Download
memory/4836-261-0x0000000000000000-mapping.dmp

Download
memory/4848-283-0x0000000000000000-mapping.dmp

Download
memory/4864-278-0x0000000000000000-mapping.dmp

Download
memory/4872-266-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads