5ebbbd43a04a87e9d85a876ce8c8a0fe2e737082fd820835c7d4378d380ed20d

General

Target

5ebbbd43a04a87e9d85a876ce8c8a0fe2e737082fd820835c7d4378d380ed20d.xlsm
Size

83KB
MD5

8268d8ad8f2b8ae50a62e0da825533bb
SHA1

e04c3620428efc685056f97eaf1de240f16a9999
SHA256

5ebbbd43a04a87e9d85a876ce8c8a0fe2e737082fd820835c7d4378d380ed20d
SHA512

0b8815f81f5d8a7b9027c14e6c749bad10268f1731f16813ac4d9eb34434493708fd3fc91166fc2d92d969522761d56fa72dde417a72f4fe3bded158fe052ccf

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://adi.iswks.com/assets/hO1v71pqfNN/

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	3964	1856	rundll32.exe	EXCEL.EXE

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

42 4004 rundll32.exe
43 4004 rundll32.exe
Downloads MZ/PE file
Loads dropped DLL 2 IoCs

Processes:

rundll32.exerundll32.exe

pid process

3964 rundll32.exe
1748 rundll32.exe
Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\Skxlofnk\qtomreuu.gwg 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
42	4004	rundll32.exe
43	4004	rundll32.exe

pid	process
3964	rundll32.exe
1748	rundll32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Skxlofnk\qtomreuu.gwg	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

1856 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
1856	EXCEL.EXE
1856	EXCEL.EXE
1856	EXCEL.EXE
1856	EXCEL.EXE
1856	EXCEL.EXE
1856	EXCEL.EXE
1856	EXCEL.EXE
1856	EXCEL.EXE
1856	EXCEL.EXE
1856	EXCEL.EXE
1856	EXCEL.EXE
1856	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exerundll32.exe

description	pid	process	target process
PID 1856 wrote to memory of 3964	1856	EXCEL.EXE	rundll32.exe
PID 1856 wrote to memory of 3964	1856	EXCEL.EXE	rundll32.exe
PID 1856 wrote to memory of 3964	1856	EXCEL.EXE	rundll32.exe
PID 3964 wrote to memory of 1748	3964	rundll32.exe	rundll32.exe
PID 3964 wrote to memory of 1748	3964	rundll32.exe	rundll32.exe
PID 3964 wrote to memory of 1748	3964	rundll32.exe	rundll32.exe
PID 1748 wrote to memory of 2200	1748	rundll32.exe	rundll32.exe
PID 1748 wrote to memory of 2200	1748	rundll32.exe	rundll32.exe
PID 1748 wrote to memory of 2200	1748	rundll32.exe	rundll32.exe
PID 2200 wrote to memory of 4004	2200	rundll32.exe	rundll32.exe
PID 2200 wrote to memory of 4004	2200	rundll32.exe	rundll32.exe
PID 2200 wrote to memory of 4004	2200	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\5ebbbd43a04a87e9d85a876ce8c8a0fe2e737082fd820835c7d4378d380ed20d.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1856

C:\Windows\SysWow64\rundll32.exe
C:\Windows\SysWow64\rundll32.exe ..\wxeu.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3964

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\wxeu.ocx",DllRegisterServer
3⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1748

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Skxlofnk\qtomreuu.gwg",IjZVZnvFB
4⤵
- Suspicious use of WriteProcessMemory
PID:2200

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Skxlofnk\qtomreuu.gwg",DllRegisterServer
5⤵
- Blocklisted process makes network request
PID:4004

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

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Downloads

C:\Users\Admin\wxeu.ocx
MD5
ca05bf688007430161aac9034884283e

SHA1
836928812af0ddc065313a6ac074113e6d58ea72

SHA256
35eb18508849d644cca7e6429e94ba8ec4133e0375d417f503103e12192db9ba

SHA512
5fa25c4fc15672c65f3cbc724db4b095c0ad8fc8f8b1c68d4c2f3ce1c17ade4949d4f76e146b1e9d15c8f36d559fb9198fd3b0428431f018e7f531844e540e73

Download Submit
\Users\Admin\wxeu.ocx
MD5
ca05bf688007430161aac9034884283e

SHA1
836928812af0ddc065313a6ac074113e6d58ea72

SHA256
35eb18508849d644cca7e6429e94ba8ec4133e0375d417f503103e12192db9ba

SHA512
5fa25c4fc15672c65f3cbc724db4b095c0ad8fc8f8b1c68d4c2f3ce1c17ade4949d4f76e146b1e9d15c8f36d559fb9198fd3b0428431f018e7f531844e540e73

Download Submit
\Users\Admin\wxeu.ocx
MD5
ca05bf688007430161aac9034884283e

SHA1
836928812af0ddc065313a6ac074113e6d58ea72

SHA256
35eb18508849d644cca7e6429e94ba8ec4133e0375d417f503103e12192db9ba

SHA512
5fa25c4fc15672c65f3cbc724db4b095c0ad8fc8f8b1c68d4c2f3ce1c17ade4949d4f76e146b1e9d15c8f36d559fb9198fd3b0428431f018e7f531844e540e73

Download Submit
memory/1748-266-0x0000000000000000-mapping.dmp

Download
memory/1856-119-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

Filesize
64KB

Download
memory/1856-120-0x0000023C12700000-0x0000023C12702000-memory.dmp

Filesize
8KB

Download
memory/1856-121-0x0000023C12700000-0x0000023C12702000-memory.dmp

Filesize
8KB

Download
memory/1856-122-0x0000023C12700000-0x0000023C12702000-memory.dmp

Filesize
8KB

Download
memory/1856-128-0x00007FF8ABF00000-0x00007FF8ABF10000-memory.dmp

Filesize
64KB

Download
memory/1856-129-0x00007FF8ABF00000-0x00007FF8ABF10000-memory.dmp

Filesize
64KB

Download
memory/1856-115-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

Filesize
64KB

Download
memory/1856-118-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

Filesize
64KB

Download
memory/1856-117-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

Filesize
64KB

Download
memory/1856-116-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

Filesize
64KB

Download
memory/2200-279-0x0000000000000000-mapping.dmp

Download
memory/3964-261-0x0000000000000000-mapping.dmp

Download
memory/4004-283-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads