0a9aac9f55670caedfe33e20159a8baeda581dc3f62f86a2e547d7b4017e9cfc

General

Target

MedWin.xls
Size

104KB
MD5

9f2a3f3ff7c400069f011102ba88560f
SHA1

7cd0d84516db5b598549df82f4a427dd32cd3e1d
SHA256

f79f56d7a2467d6f73e634be22ac623ee658aa9778b34f23913f9749a2fdd26c
SHA512

80dc9955db7fd513db41d05f33ae4a2b713029a649d71ae01d2f1486d12af2a604525e920cd7ab22002b83833aa4322e16eca16dceffaacc0dd25569bf77f46c
SSDEEP

3072:yWKpbdrHYrMue8q7QPX+5xtekEdi8/dgeJ0depMHwGGqd4Mk:nKpbdrHYrMue8q7QPX+5xtFEdi8/dgeN

Score

10^/10

discovery

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://filecabinet.digitalechoes.co.uk/wp-admin/NC/

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	116	4832	rundll32.exe	81

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	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

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

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

pid	Process
4832	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4832	EXCEL.EXE
4832	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
4832	EXCEL.EXE
4832	EXCEL.EXE
4832	EXCEL.EXE
4832	EXCEL.EXE
4832	EXCEL.EXE
4832	EXCEL.EXE
4832	EXCEL.EXE
4832	EXCEL.EXE
4832	EXCEL.EXE
4832	EXCEL.EXE
4832	EXCEL.EXE
4832	EXCEL.EXE
4832	EXCEL.EXE
4832	EXCEL.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4832 wrote to memory of 116	4832	EXCEL.EXE	85
PID 4832 wrote to memory of 116	4832	EXCEL.EXE	85
PID 4832 wrote to memory of 116	4832	EXCEL.EXE	85

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\MedWin.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4832
- C:\Windows\SysWow64\rundll32.exe
  C:\Windows\SysWow64\rundll32.exe ..\iix.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
  2⤵
  - Process spawned unexpected child process
  - System Location Discovery: System Language Discovery
  PID:116

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms

Filesize
3KB

MD5
9fc8f7a6e020e88d7dad5185a00687ec

SHA1
f272b16c03a0c18e131ce87cc9227b924580186b

SHA256
23d175430f25df4e02f686df7e2fd8e87d6f3888ebca6c8a0f547235a91cd035

SHA512
76eeff189e1c267d54be0154a265d1575b0b7460c27c3deba79932eb514ec6369788890852a5e935bbc0f07519e9d58e1aa84284f41d960f6b89c6858a1b503b

Download Submit
memory/4832-5-0x00007FFED5050000-0x00007FFED5060000-memory.dmp

Filesize
64KB

Download
memory/4832-8-0x00007FFF14FD0000-0x00007FFF151C5000-memory.dmp

Filesize
2.0MB

Download
memory/4832-13-0x00007FFF14FD0000-0x00007FFF151C5000-memory.dmp

Filesize
2.0MB

Download
memory/4832-4-0x00007FFED5050000-0x00007FFED5060000-memory.dmp

Filesize
64KB

Download
memory/4832-14-0x00007FFED2800000-0x00007FFED2810000-memory.dmp

Filesize
64KB

Download
memory/4832-7-0x00007FFF14FD0000-0x00007FFF151C5000-memory.dmp

Filesize
2.0MB

Download
memory/4832-9-0x00007FFF14FD0000-0x00007FFF151C5000-memory.dmp

Filesize
2.0MB

Download
memory/4832-15-0x00007FFF14FD0000-0x00007FFF151C5000-memory.dmp

Filesize
2.0MB

Download
memory/4832-10-0x00007FFED2800000-0x00007FFED2810000-memory.dmp

Filesize
64KB

Download
memory/4832-11-0x00007FFF14FD0000-0x00007FFF151C5000-memory.dmp

Filesize
2.0MB

Download
memory/4832-12-0x00007FFF14FD0000-0x00007FFF151C5000-memory.dmp

Filesize
2.0MB

Download
memory/4832-0-0x00007FFED5050000-0x00007FFED5060000-memory.dmp

Filesize
64KB

Download
memory/4832-2-0x00007FFED5050000-0x00007FFED5060000-memory.dmp

Filesize
64KB

Download
memory/4832-3-0x00007FFED5050000-0x00007FFED5060000-memory.dmp

Filesize
64KB

Download
memory/4832-6-0x00007FFF14FD0000-0x00007FFF151C5000-memory.dmp

Filesize
2.0MB

Download
memory/4832-18-0x00007FFF14FD0000-0x00007FFF151C5000-memory.dmp

Filesize
2.0MB

Download
memory/4832-19-0x00007FFF14FD0000-0x00007FFF151C5000-memory.dmp

Filesize
2.0MB

Download
memory/4832-20-0x00007FFF14FD0000-0x00007FFF151C5000-memory.dmp

Filesize
2.0MB

Download
memory/4832-21-0x00007FFF14FD0000-0x00007FFF151C5000-memory.dmp

Filesize
2.0MB

Download
memory/4832-17-0x00007FFF14FD0000-0x00007FFF151C5000-memory.dmp

Filesize
2.0MB

Download
memory/4832-16-0x00007FFF14FD0000-0x00007FFF151C5000-memory.dmp

Filesize
2.0MB

Download
memory/4832-31-0x00007FFF14FD0000-0x00007FFF151C5000-memory.dmp

Filesize
2.0MB

Download
memory/4832-32-0x00007FFF1506D000-0x00007FFF1506E000-memory.dmp

Filesize
4KB

Download
memory/4832-36-0x00007FFF14FD0000-0x00007FFF151C5000-memory.dmp

Filesize
2.0MB

Download
memory/4832-1-0x00007FFF1506D000-0x00007FFF1506E000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads