188d8ec1a7f87d4d0c195d54c5a581fedb58e49e31a5c8f5fe41f20e277bd9f9

General

Target
4297929786N.xls
Size 118KB
Sample220111-qthnrsgaeq
SHA256 188d8ec1a7f87d4d0c195d54c5a581fedb58e49e31a5c8f5fe41f20e277bd9f9
MD5 363b347fe2a2b6742e30cdd35dd2096e
SHA1 027a917a462d9ffd51c08f56a3c51a58e9534a47
SHA512 d5f791f6c344640bb401f1984879e361c5d7544e164ab994ff6294394b03a5f87103d5818cd737668e492d9e4092639df639bd849bdc9e2c5321ec4fe5b56e1e
MD5 SHA1 SHA512

Score

10^/10

suricata

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper
https://wordpressdes.vanzolini-gte.org.br/fundacaotelefonica.org.br/gAbC4QpJYI/

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	3712	2604	rundll32.exe	67

suricata: ET MALWARE W32/Emotet CnC Beacon 3
suricata: ET MALWARE W32/Emotet CnC Beacon 3
suricata

Blocklisted process makes network request 2 IoCs

flow	pid	Process
42	1244	rundll32.exe
43	1244	rundll32.exe

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
3712	rundll32.exe
1760	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Icxiizfwrccefoe\xhagmyzruzujii.nge	rundll32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

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
2604	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1244	rundll32.exe
1244	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2604	EXCEL.EXE
2604	EXCEL.EXE
2604	EXCEL.EXE
2604	EXCEL.EXE
2604	EXCEL.EXE
2604	EXCEL.EXE
2604	EXCEL.EXE
2604	EXCEL.EXE
2604	EXCEL.EXE
2604	EXCEL.EXE
2604	EXCEL.EXE
2604	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2604 wrote to memory of 3712	2604	EXCEL.EXE	71
PID 2604 wrote to memory of 3712	2604	EXCEL.EXE	71
PID 2604 wrote to memory of 3712	2604	EXCEL.EXE	71
PID 3712 wrote to memory of 1760	3712	rundll32.exe	72
PID 3712 wrote to memory of 1760	3712	rundll32.exe	72
PID 3712 wrote to memory of 1760	3712	rundll32.exe	72
PID 1760 wrote to memory of 2180	1760	rundll32.exe	73
PID 1760 wrote to memory of 2180	1760	rundll32.exe	73
PID 1760 wrote to memory of 2180	1760	rundll32.exe	73
PID 2180 wrote to memory of 1244	2180	rundll32.exe	74
PID 2180 wrote to memory of 1244	2180	rundll32.exe	74
PID 2180 wrote to memory of 1244	2180	rundll32.exe	74

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\4297929786N.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2604
- 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:3712
- - 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:1760
  - - C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Icxiizfwrccefoe\xhagmyzruzujii.nge",QWGTpikNrSHH
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2180
    - - C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Icxiizfwrccefoe\xhagmyzruzujii.nge",DllRegisterServer
        5⤵
        Blocklisted process makes network request
        Suspicious behavior: EnumeratesProcesses
        
        PID:1244

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

memory/2604-119-0x00000179764E0000-0x00000179764E2000-memory.dmp

Download

memory/2604-127-0x00007FFDCC4B0000-0x00007FFDCC4C0000-memory.dmp

Download

memory/2604-128-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp

Download

memory/2604-129-0x00007FFDCC4B0000-0x00007FFDCC4C0000-memory.dmp

Download

memory/2604-121-0x00000179764E0000-0x00000179764E2000-memory.dmp

Download

memory/2604-120-0x00000179764E0000-0x00000179764E2000-memory.dmp

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memory/2604-115-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp

Download

memory/2604-118-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp

Download

memory/2604-117-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp

Download

memory/2604-116-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads