6e3f7fbf88f0c06a06f7c3fa532eb76dc49819a18988ab866c98c246717e1e5e

General

Target

6e3f7fbf88f0c06a06f7c3fa532eb76dc49819a18988ab866c98c246717e1e5e.xlsm
Size

83KB
MD5

864eaed6a667c04ce8c4af621e4dfded
SHA1

49e79859df0b4b4042728ba2984bfd7b52c0fc16
SHA256

6e3f7fbf88f0c06a06f7c3fa532eb76dc49819a18988ab866c98c246717e1e5e
SHA512

aa6f4fa4ae8d6f0ad15c5939b975e0cd3ffc6d47f7ac41363a6fb91a62f115c78e4d0b0b19ff2b941272dd06a32b42145e8eda6f1ec7bd18974d7e3a7dbd83dc

Score

10^/10

suricata

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	2520	3500	rundll32.exe	EXCEL.EXE

suricata: ET MALWARE W32/Emotet CnC Beacon 3
suricata: ET MALWARE W32/Emotet CnC Beacon 3
suricata
Blocklisted process makes network request 3 IoCs

Processes:

rundll32.exe

flow pid process

36 2896 rundll32.exe
37 2896 rundll32.exe
39 2896 rundll32.exe
Downloads MZ/PE file
Loads dropped DLL 2 IoCs

Processes:

rundll32.exerundll32.exe

pid process

2520 rundll32.exe
2356 rundll32.exe
Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\Gftxxaiha\dcaripbyu.rmp 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	2896	rundll32.exe
37	2896	rundll32.exe
39	2896	rundll32.exe

pid	process
2520	rundll32.exe
2356	rundll32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Gftxxaiha\dcaripbyu.rmp	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\~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

3500 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

2896 rundll32.exe
2896 rundll32.exe

pid	process
2896	rundll32.exe
2896	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
3500	EXCEL.EXE
3500	EXCEL.EXE
3500	EXCEL.EXE
3500	EXCEL.EXE
3500	EXCEL.EXE
3500	EXCEL.EXE
3500	EXCEL.EXE
3500	EXCEL.EXE
3500	EXCEL.EXE
3500	EXCEL.EXE
3500	EXCEL.EXE
3500	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exerundll32.exe

description	pid	process	target process
PID 3500 wrote to memory of 2520	3500	EXCEL.EXE	rundll32.exe
PID 3500 wrote to memory of 2520	3500	EXCEL.EXE	rundll32.exe
PID 3500 wrote to memory of 2520	3500	EXCEL.EXE	rundll32.exe
PID 2520 wrote to memory of 2356	2520	rundll32.exe	rundll32.exe
PID 2520 wrote to memory of 2356	2520	rundll32.exe	rundll32.exe
PID 2520 wrote to memory of 2356	2520	rundll32.exe	rundll32.exe
PID 2356 wrote to memory of 1332	2356	rundll32.exe	rundll32.exe
PID 2356 wrote to memory of 1332	2356	rundll32.exe	rundll32.exe
PID 2356 wrote to memory of 1332	2356	rundll32.exe	rundll32.exe
PID 1332 wrote to memory of 2896	1332	rundll32.exe	rundll32.exe
PID 1332 wrote to memory of 2896	1332	rundll32.exe	rundll32.exe
PID 1332 wrote to memory of 2896	1332	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\6e3f7fbf88f0c06a06f7c3fa532eb76dc49819a18988ab866c98c246717e1e5e.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3500

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:2520

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:2356

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Gftxxaiha\dcaripbyu.rmp",groQRGpQmvu
4⤵
- Suspicious use of WriteProcessMemory
PID:1332

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Gftxxaiha\dcaripbyu.rmp",DllRegisterServer
5⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
PID:2896

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
7d01a3b0aa4b27e6f466dc8c321c1246

SHA1
84db079fbbf1001c479023bfc965837055b5c635

SHA256
4b0a7962f77a16ce4f7b348b841285508daf13451c11d52f8f6d8c2af9937dcc

SHA512
9ea6417d6b65301c3cd50cebb786610e40f360d58e2afb8e2cd45439de2acfa146a44064b106db7fa1bb9967272fae8649fe0b705d5167f15cc1ef3a1f080c11

Download Submit
\Users\Admin\erum.ocx
MD5
7d01a3b0aa4b27e6f466dc8c321c1246

SHA1
84db079fbbf1001c479023bfc965837055b5c635

SHA256
4b0a7962f77a16ce4f7b348b841285508daf13451c11d52f8f6d8c2af9937dcc

SHA512
9ea6417d6b65301c3cd50cebb786610e40f360d58e2afb8e2cd45439de2acfa146a44064b106db7fa1bb9967272fae8649fe0b705d5167f15cc1ef3a1f080c11

Download Submit
\Users\Admin\erum.ocx
MD5
7d01a3b0aa4b27e6f466dc8c321c1246

SHA1
84db079fbbf1001c479023bfc965837055b5c635

SHA256
4b0a7962f77a16ce4f7b348b841285508daf13451c11d52f8f6d8c2af9937dcc

SHA512
9ea6417d6b65301c3cd50cebb786610e40f360d58e2afb8e2cd45439de2acfa146a44064b106db7fa1bb9967272fae8649fe0b705d5167f15cc1ef3a1f080c11

Download Submit
memory/1332-279-0x0000000000000000-mapping.dmp

Download
memory/2356-263-0x0000000000000000-mapping.dmp

Download
memory/2520-258-0x0000000000000000-mapping.dmp

Download
memory/2896-284-0x0000000000000000-mapping.dmp

Download
memory/3500-119-0x00000243EDD40000-0x00000243EDD42000-memory.dmp

Filesize
8KB

Download
memory/3500-128-0x00007FFBCBCE0000-0x00007FFBCBCF0000-memory.dmp

Filesize
64KB

Download
memory/3500-129-0x00007FFBCBCE0000-0x00007FFBCBCF0000-memory.dmp

Filesize
64KB

Download
memory/3500-122-0x00000243EDD40000-0x00000243EDD42000-memory.dmp

Filesize
8KB

Download
memory/3500-121-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp

Filesize
64KB

Download
memory/3500-120-0x00000243EDD40000-0x00000243EDD42000-memory.dmp

Filesize
8KB

Download
memory/3500-115-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp

Filesize
64KB

Download
memory/3500-118-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp

Filesize
64KB

Download
memory/3500-117-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp

Filesize
64KB

Download
memory/3500-116-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads