35101e24e0d9b97edc46d35011a21e505ee4b05036998544ad3dad3444e09376

General

Target

35101e24e0d9b97edc46d35011a21e505ee4b05036998544ad3dad3444e09376.xlsm
Size

83KB
MD5

ff818ce9aa787f15cda72ec89a7efe74
SHA1

f9f16f7ba8fde9898e685973e0e9293599442f28
SHA256

35101e24e0d9b97edc46d35011a21e505ee4b05036998544ad3dad3444e09376
SHA512

ad5ba5618fe7493da7061b06902ae408460aaae1544521e5b1db23d861cd787cb5c14e06a2d6dafac2b05aaab22b9e8850b0e5d312de54f535dbd082abefd80c

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://www.crownpacificpartners.com/guglio/Rt4el/

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	2448	2656	rundll32.exe	EXCEL.EXE

Blocklisted process makes network request 3 IoCs

Processes:

rundll32.exe

flow pid process

36 2284 rundll32.exe
37 2284 rundll32.exe
38 2284 rundll32.exe
Downloads MZ/PE file
Loads dropped DLL 2 IoCs

Processes:

rundll32.exerundll32.exe

pid process

2448 rundll32.exe
2892 rundll32.exe
Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\Gwsyvp\ssqa.lvu 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
36	2284	rundll32.exe
37	2284	rundll32.exe
38	2284	rundll32.exe

pid	process
2448	rundll32.exe
2892	rundll32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Gwsyvp\ssqa.lvu	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

2656 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

2284 rundll32.exe
2284 rundll32.exe

pid	process
2284	rundll32.exe
2284	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
2656	EXCEL.EXE
2656	EXCEL.EXE
2656	EXCEL.EXE
2656	EXCEL.EXE
2656	EXCEL.EXE
2656	EXCEL.EXE
2656	EXCEL.EXE
2656	EXCEL.EXE
2656	EXCEL.EXE
2656	EXCEL.EXE
2656	EXCEL.EXE
2656	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exerundll32.exe

description	pid	process	target process
PID 2656 wrote to memory of 2448	2656	EXCEL.EXE	rundll32.exe
PID 2656 wrote to memory of 2448	2656	EXCEL.EXE	rundll32.exe
PID 2656 wrote to memory of 2448	2656	EXCEL.EXE	rundll32.exe
PID 2448 wrote to memory of 2892	2448	rundll32.exe	rundll32.exe
PID 2448 wrote to memory of 2892	2448	rundll32.exe	rundll32.exe
PID 2448 wrote to memory of 2892	2448	rundll32.exe	rundll32.exe
PID 2892 wrote to memory of 3848	2892	rundll32.exe	rundll32.exe
PID 2892 wrote to memory of 3848	2892	rundll32.exe	rundll32.exe
PID 2892 wrote to memory of 3848	2892	rundll32.exe	rundll32.exe
PID 3848 wrote to memory of 2284	3848	rundll32.exe	rundll32.exe
PID 3848 wrote to memory of 2284	3848	rundll32.exe	rundll32.exe
PID 3848 wrote to memory of 2284	3848	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\35101e24e0d9b97edc46d35011a21e505ee4b05036998544ad3dad3444e09376.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2656

C:\Windows\SysWow64\rundll32.exe
C:\Windows\SysWow64\rundll32.exe ..\erum.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2448

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\erum.ocx",DllRegisterServer
3⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2892

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Gwsyvp\ssqa.lvu",uVsPTylhSWYP
4⤵
- Suspicious use of WriteProcessMemory
PID:3848

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Gwsyvp\ssqa.lvu",DllRegisterServer
5⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
PID:2284

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\erum.ocx
MD5
160735afb3d1bd216ad1bd0e4e014b84

SHA1
2ec81049f3233e9ffdb4c4b7e8989fd052bbcab0

SHA256
2d113779353faba137d3bd52bf4c73c4e89beef5315c13eea9c1d0c13353adb0

SHA512
10262c0deaee932d85bbf1d86ad5dfb22c3467d0c3a7650ce640191fb18ec41cb862f05259d5ffd8b61409fada4c1d270e3dd3d9785aa216459d5e652ac67ecb

Download Submit
\Users\Admin\erum.ocx
MD5
160735afb3d1bd216ad1bd0e4e014b84

SHA1
2ec81049f3233e9ffdb4c4b7e8989fd052bbcab0

SHA256
2d113779353faba137d3bd52bf4c73c4e89beef5315c13eea9c1d0c13353adb0

SHA512
10262c0deaee932d85bbf1d86ad5dfb22c3467d0c3a7650ce640191fb18ec41cb862f05259d5ffd8b61409fada4c1d270e3dd3d9785aa216459d5e652ac67ecb

Download Submit
\Users\Admin\erum.ocx
MD5
160735afb3d1bd216ad1bd0e4e014b84

SHA1
2ec81049f3233e9ffdb4c4b7e8989fd052bbcab0

SHA256
2d113779353faba137d3bd52bf4c73c4e89beef5315c13eea9c1d0c13353adb0

SHA512
10262c0deaee932d85bbf1d86ad5dfb22c3467d0c3a7650ce640191fb18ec41cb862f05259d5ffd8b61409fada4c1d270e3dd3d9785aa216459d5e652ac67ecb

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memory/2284-300-0x0000000000000000-mapping.dmp

Download
memory/2448-273-0x0000000000000000-mapping.dmp

Download
memory/2656-119-0x000001F3DA6C0000-0x000001F3DA6C2000-memory.dmp

Filesize
8KB

Download
memory/2656-121-0x00007FF893410000-0x00007FF893420000-memory.dmp

Filesize
64KB

Download
memory/2656-122-0x000001F3DA6C0000-0x000001F3DA6C2000-memory.dmp

Filesize
8KB

Download
memory/2656-128-0x00007FF88FA70000-0x00007FF88FA80000-memory.dmp

Filesize
64KB

Download
memory/2656-129-0x00007FF88FA70000-0x00007FF88FA80000-memory.dmp

Filesize
64KB

Download
memory/2656-120-0x000001F3DA6C0000-0x000001F3DA6C2000-memory.dmp

Filesize
8KB

Download
memory/2656-115-0x00007FF893410000-0x00007FF893420000-memory.dmp

Filesize
64KB

Download
memory/2656-118-0x00007FF893410000-0x00007FF893420000-memory.dmp

Filesize
64KB

Download
memory/2656-117-0x00007FF893410000-0x00007FF893420000-memory.dmp

Filesize
64KB

Download
memory/2656-116-0x00007FF893410000-0x00007FF893420000-memory.dmp

Filesize
64KB

Download
memory/2892-278-0x0000000000000000-mapping.dmp

Download
memory/3848-295-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads