b834ae0cc998615fa9a21eded0af0d8009167d77b10fad933d0d5f35b38c1fb6

Analysis

max time kernel
118s
max time network
129s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20-11-2024 18:53

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General

Target

b834ae0cc998615fa9a21eded0af0d8009167d77b10fad933d0d5f35b38c1fb6.xlsm
Size

30KB
MD5

80aef7edfc9c272322aaea7038f55657
SHA1

4d9557ec54d47beb0a0d2eee419d7ee9101b4c06
SHA256

b834ae0cc998615fa9a21eded0af0d8009167d77b10fad933d0d5f35b38c1fb6
SHA512

0fb2ef79c7e2f40d0eab8c13b4ca5021371b43830d8ce62b48653655bbfda74f44b16a114b251ea6cae06506a6bc3491846b9773a76e5bdc85f2597ebeed004e
SSDEEP

384:n842JZPFhNjtOA7icg0SCdiVH2KgUrNU/qWhZOdBNPJM+kqr9eCgh0k5M2E6v:gHFhNZliH2ydFfPdkqstJhE6v

Score

10^/10

discovery

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://henrysfreshroast.com/6cc4ts0bkrOlXq/

Signatures

Process spawned unexpected child process 1 IoCs

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

Processes:

regsvr32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	2784	1848	regsvr32.exe	EXCEL.EXE

System Location Discovery: System Language Discovery 1 TTPs 2 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

Processes:

EXCEL.EXEregsvr32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

EXCEL.EXE

description ioc process

Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1848 EXCEL.EXE
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

EXCEL.EXE

pid process

1848 EXCEL.EXE
1848 EXCEL.EXE
1848 EXCEL.EXE
1848 EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

pid	process
1848	EXCEL.EXE

pid	process
1848	EXCEL.EXE
1848	EXCEL.EXE
1848	EXCEL.EXE
1848	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1848 wrote to memory of 2784	1848	EXCEL.EXE	regsvr32.exe
PID 1848 wrote to memory of 2784	1848	EXCEL.EXE	regsvr32.exe
PID 1848 wrote to memory of 2784	1848	EXCEL.EXE	regsvr32.exe
PID 1848 wrote to memory of 2784	1848	EXCEL.EXE	regsvr32.exe
PID 1848 wrote to memory of 2784	1848	EXCEL.EXE	regsvr32.exe
PID 1848 wrote to memory of 2784	1848	EXCEL.EXE	regsvr32.exe
PID 1848 wrote to memory of 2784	1848	EXCEL.EXE	regsvr32.exe

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\b834ae0cc998615fa9a21eded0af0d8009167d77b10fad933d0d5f35b38c1fb6.xlsm
1⤵
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1848
- C:\Windows\SysWow64\regsvr32.exe
  C:\Windows\SysWow64\regsvr32.exe -s ..\rfs.dll
  2⤵
  - Process spawned unexpected child process
  - System Location Discovery: System Language Discovery
  PID:2784

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\rfs.dll

Filesize
56KB

MD5
d5cbf3235a39c09c9d292dafdf0393a5

SHA1
ae109e202e6f0965b47f38ee29b3725800939a9f

SHA256
208d15c175407bc56c9e1d1a6e31290cf8c04fe1da742e4ad0dbe06960b7f1dd

SHA512
202212aeb1cabe772e05ec7649b83be4a04b68b644a1621993e91e370dc0b9de268ea50f0dab3a74178ecb648d06b5173222d3ed1f0e31d04abeded020b079bd

Download Submit
memory/1848-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1848-1-0x0000000072A4D000-0x0000000072A58000-memory.dmp

Filesize
44KB

Download
memory/1848-5-0x0000000072A4D000-0x0000000072A58000-memory.dmp

Filesize
44KB

Download