8e8824a855908e301cb873fe67e37eb4af99b32f75fb1ea8997af913540ece02

General

Target

8e8824a855908e301cb873fe67e37eb4af99b32f75fb1ea8997af913540ece02.xlsm
Size

83KB
MD5

b5aec92918e1bfc009b1755d915bd2d3
SHA1

df4e9cebca1868eabb7efd97b8b9874a737711a2
SHA256

8e8824a855908e301cb873fe67e37eb4af99b32f75fb1ea8997af913540ece02
SHA512

9bb8cb30ffb93056fbf4d2b24e0b66a3b4f57dbd4d25b39203bb945055385d596cfcc53ec07d7af0e9daeed972c577755ba63674b85baf4b01c8a182dd418388

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://digitalcardsbychivami.xyz/includes/KrPj/

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	3600	2648	rundll32.exe	67

Blocklisted process makes network request 2 IoCs

flow	pid	Process
43	304	rundll32.exe
44	304	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
3600	rundll32.exe
3632	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Voafatbuhn\cbwborcjawmms.eam	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 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

pid	Process
2648	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
304	rundll32.exe
304	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2648	EXCEL.EXE
2648	EXCEL.EXE
2648	EXCEL.EXE
2648	EXCEL.EXE
2648	EXCEL.EXE
2648	EXCEL.EXE
2648	EXCEL.EXE
2648	EXCEL.EXE
2648	EXCEL.EXE
2648	EXCEL.EXE
2648	EXCEL.EXE
2648	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2648 wrote to memory of 3600	2648	EXCEL.EXE	72
PID 2648 wrote to memory of 3600	2648	EXCEL.EXE	72
PID 2648 wrote to memory of 3600	2648	EXCEL.EXE	72
PID 3600 wrote to memory of 3632	3600	rundll32.exe	73
PID 3600 wrote to memory of 3632	3600	rundll32.exe	73
PID 3600 wrote to memory of 3632	3600	rundll32.exe	73
PID 3632 wrote to memory of 1180	3632	rundll32.exe	74
PID 3632 wrote to memory of 1180	3632	rundll32.exe	74
PID 3632 wrote to memory of 1180	3632	rundll32.exe	74
PID 1180 wrote to memory of 304	1180	rundll32.exe	75
PID 1180 wrote to memory of 304	1180	rundll32.exe	75
PID 1180 wrote to memory of 304	1180	rundll32.exe	75

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\8e8824a855908e301cb873fe67e37eb4af99b32f75fb1ea8997af913540ece02.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2648
- C:\Windows\SysWow64\rundll32.exe
  C:\Windows\SysWow64\rundll32.exe ..\dwa.ocx,D"&"l"&"lR"&"egister"&"Server
  2⤵
  - Process spawned unexpected child process
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:3600
- - C:\Windows\SysWOW64\rundll32.exe
    C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\dwa.ocx",DllRegisterServer
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of WriteProcessMemory
    PID:3632
  - - C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Voafatbuhn\cbwborcjawmms.eam",nGimXRgwLE
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1180
    - - C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Voafatbuhn\cbwborcjawmms.eam",DllRegisterServer
        5⤵
        Blocklisted process makes network request
        Suspicious behavior: EnumeratesProcesses
        
        PID:304

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/2648-119-0x00007FFEF4630000-0x00007FFEF4640000-memory.dmp

Filesize
64KB

Download
memory/2648-121-0x000001FB3F810000-0x000001FB3F812000-memory.dmp

Filesize
8KB

Download
memory/2648-122-0x000001FB3F810000-0x000001FB3F812000-memory.dmp

Filesize
8KB

Download
memory/2648-128-0x00007FFEF1380000-0x00007FFEF1390000-memory.dmp

Filesize
64KB

Download
memory/2648-129-0x00007FFEF1380000-0x00007FFEF1390000-memory.dmp

Filesize
64KB

Download
memory/2648-120-0x000001FB3F810000-0x000001FB3F812000-memory.dmp

Filesize
8KB

Download
memory/2648-115-0x00007FFEF4630000-0x00007FFEF4640000-memory.dmp

Filesize
64KB

Download
memory/2648-118-0x00007FFEF4630000-0x00007FFEF4640000-memory.dmp

Filesize
64KB

Download
memory/2648-117-0x00007FFEF4630000-0x00007FFEF4640000-memory.dmp

Filesize
64KB

Download
memory/2648-116-0x00007FFEF4630000-0x00007FFEF4640000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads