2243ada22b4c83d5f5470d40be8a9a88035c7264ad4404dad0776975a93da710

General

Target

2243ada22b4c83d5f5470d40be8a9a88035c7264ad4404dad0776975a93da710.xlsm
Size

83KB
MD5

3e7a72a5cf394ca9b6bddfca2793c259
SHA1

3cd1eacdff52eaf83b4cdc3c4656019a5c5f288f
SHA256

2243ada22b4c83d5f5470d40be8a9a88035c7264ad4404dad0776975a93da710
SHA512

fbfa181b3dbfbcdf07382852063602271e10bc9abb480046640c02908faa8564eaac6cf9c90e82883e5f3c7baf564f5ad936db8f2fe73bbfd71ccd0e7ab80e05

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://mail.emilyanncain.com/cgi-bin/A7NT3ENvn/

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	864	3484	rundll32.exe	68

Blocklisted process makes network request 2 IoCs

flow	pid	Process
38	2004	rundll32.exe
39	2004	rundll32.exe

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
864	rundll32.exe
1700	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Djryzt\pbiunpgizr.ftt	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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
3484	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2004	rundll32.exe
2004	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
3484	EXCEL.EXE
3484	EXCEL.EXE
3484	EXCEL.EXE
3484	EXCEL.EXE
3484	EXCEL.EXE
3484	EXCEL.EXE
3484	EXCEL.EXE
3484	EXCEL.EXE
3484	EXCEL.EXE
3484	EXCEL.EXE
3484	EXCEL.EXE
3484	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3484 wrote to memory of 864	3484	EXCEL.EXE	71
PID 3484 wrote to memory of 864	3484	EXCEL.EXE	71
PID 3484 wrote to memory of 864	3484	EXCEL.EXE	71
PID 864 wrote to memory of 1700	864	rundll32.exe	72
PID 864 wrote to memory of 1700	864	rundll32.exe	72
PID 864 wrote to memory of 1700	864	rundll32.exe	72
PID 1700 wrote to memory of 2088	1700	rundll32.exe	73
PID 1700 wrote to memory of 2088	1700	rundll32.exe	73
PID 1700 wrote to memory of 2088	1700	rundll32.exe	73
PID 2088 wrote to memory of 2004	2088	rundll32.exe	74
PID 2088 wrote to memory of 2004	2088	rundll32.exe	74
PID 2088 wrote to memory of 2004	2088	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\2243ada22b4c83d5f5470d40be8a9a88035c7264ad4404dad0776975a93da710.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3484
- 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:864
- - 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:1700
  - - C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Djryzt\pbiunpgizr.ftt",eYNrgZVGyk
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2088
    - - C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Djryzt\pbiunpgizr.ftt",DllRegisterServer
        5⤵
        Blocklisted process makes network request
        Suspicious behavior: EnumeratesProcesses
        
        PID:2004

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

Replay Monitor

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Downloads

memory/3484-121-0x00007FFB428B0000-0x00007FFB428C0000-memory.dmp

Filesize
64KB

Download
memory/3484-179-0x00000288FA580000-0x00000288FA582000-memory.dmp

Filesize
8KB

Download
memory/3484-129-0x00007FFB3FD60000-0x00007FFB3FD70000-memory.dmp

Filesize
64KB

Download
memory/3484-144-0x00000288FA580000-0x00000288FA582000-memory.dmp

Filesize
8KB

Download
memory/3484-145-0x00000288FA580000-0x00000288FA582000-memory.dmp

Filesize
8KB

Download
memory/3484-173-0x00000288FA580000-0x00000288FA582000-memory.dmp

Filesize
8KB

Download
memory/3484-174-0x00000288FA580000-0x00000288FA582000-memory.dmp

Filesize
8KB

Download
memory/3484-176-0x00000288FA580000-0x00000288FA582000-memory.dmp

Filesize
8KB

Download
memory/3484-177-0x00000288FA580000-0x00000288FA582000-memory.dmp

Filesize
8KB

Download
memory/3484-128-0x00007FFB3FD60000-0x00007FFB3FD70000-memory.dmp

Filesize
64KB

Download
memory/3484-122-0x00000288FA580000-0x00000288FA582000-memory.dmp

Filesize
8KB

Download
memory/3484-115-0x00007FFB428B0000-0x00007FFB428C0000-memory.dmp

Filesize
64KB

Download
memory/3484-119-0x00000288FA580000-0x00000288FA582000-memory.dmp

Filesize
8KB

Download
memory/3484-120-0x00000288FA580000-0x00000288FA582000-memory.dmp

Filesize
8KB

Download
memory/3484-118-0x00007FFB428B0000-0x00007FFB428C0000-memory.dmp

Filesize
64KB

Download
memory/3484-117-0x00007FFB428B0000-0x00007FFB428C0000-memory.dmp

Filesize
64KB

Download
memory/3484-116-0x00007FFB428B0000-0x00007FFB428C0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads