c48ee231603f2af5a87f084b786a81c8595abffd5d2c7919ef1b6e17be03b1fa

General

Target

c48ee231603f2af5a87f084b786a81c8595abffd5d2c7919ef1b6e17be03b1fa.xlsm
Size

30KB
MD5

2878fb7b128e0869cee3a2ab35190144
SHA1

b46a9b499e67dbfdfde7bbb58e2b2fc0ab8cdc39
SHA256

c48ee231603f2af5a87f084b786a81c8595abffd5d2c7919ef1b6e17be03b1fa
SHA512

40c14b7cae023763c4c47775d2342bae1b734865e0eb262072cf6531518cb45ab3da167f6758ddbc8f66fe9d57ee936832b6e997747f538da42380d94278e60b
SSDEEP

384:L842JZPFhNjtOA7icg0SCdiVH2KgUrNU/qWhZOdBNPJM+kqr9eCgh0k5M2E6v:8HFhNZliH2ydFfPdkqstJhE6v

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\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2340	4192	regsvr32.exe	EXCEL.EXE

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

Processes:

regsvr32.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language regsvr32.exe

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

Processes:

EXCEL.EXE

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

Processes:

EXCEL.EXE

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4192 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

4192 EXCEL.EXE
4192 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4192 wrote to memory of 2340	4192	EXCEL.EXE	regsvr32.exe
PID 4192 wrote to memory of 2340	4192	EXCEL.EXE	regsvr32.exe
PID 4192 wrote to memory of 2340	4192	EXCEL.EXE	regsvr32.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\c48ee231603f2af5a87f084b786a81c8595abffd5d2c7919ef1b6e17be03b1fa.xlsm"
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:4192
- 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:2340

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
1KB

MD5
080b0d600d6db1de255f81bacf702ae5

SHA1
3a308782407ad4a316efe801cafeb53fe2007ccf

SHA256
e6e460033d800f014196fb3cbd7ae93507fc3613d3308152a71deaa4071675c8

SHA512
8f80c362d04a0be7ec34e8a52ea816f078056e2b9381547889a1a713a0c8d1a54cffa97747043e4faad4f8f11270141d0f9e8d6b9629a641b5b9363697723e85

Download Submit
C:\Users\Admin\rfs.dll

Filesize
56KB

MD5
d5cbf3235a39c09c9d292dafdf0393a5

SHA1
ae109e202e6f0965b47f38ee29b3725800939a9f

SHA256
208d15c175407bc56c9e1d1a6e31290cf8c04fe1da742e4ad0dbe06960b7f1dd

SHA512
202212aeb1cabe772e05ec7649b83be4a04b68b644a1621993e91e370dc0b9de268ea50f0dab3a74178ecb648d06b5173222d3ed1f0e31d04abeded020b079bd

Download Submit
memory/4192-8-0x00007FFA42950000-0x00007FFA42B45000-memory.dmp

Filesize
2.0MB

Download
memory/4192-11-0x00007FFA42950000-0x00007FFA42B45000-memory.dmp

Filesize
2.0MB

Download
memory/4192-4-0x00007FFA029D0000-0x00007FFA029E0000-memory.dmp

Filesize
64KB

Download
memory/4192-5-0x00007FFA42950000-0x00007FFA42B45000-memory.dmp

Filesize
2.0MB

Download
memory/4192-7-0x00007FFA029D0000-0x00007FFA029E0000-memory.dmp

Filesize
64KB

Download
memory/4192-6-0x00007FFA42950000-0x00007FFA42B45000-memory.dmp

Filesize
2.0MB

Download
memory/4192-9-0x00007FFA42950000-0x00007FFA42B45000-memory.dmp

Filesize
2.0MB

Download
memory/4192-10-0x00007FFA42950000-0x00007FFA42B45000-memory.dmp

Filesize
2.0MB

Download
memory/4192-0-0x00007FFA029D0000-0x00007FFA029E0000-memory.dmp

Filesize
64KB

Download
memory/4192-2-0x00007FFA029D0000-0x00007FFA029E0000-memory.dmp

Filesize
64KB

Download
memory/4192-12-0x00007FFA00170000-0x00007FFA00180000-memory.dmp

Filesize
64KB

Download
memory/4192-13-0x00007FFA00170000-0x00007FFA00180000-memory.dmp

Filesize
64KB

Download
memory/4192-3-0x00007FFA029D0000-0x00007FFA029E0000-memory.dmp

Filesize
64KB

Download
memory/4192-35-0x00007FFA42950000-0x00007FFA42B45000-memory.dmp

Filesize
2.0MB

Download
memory/4192-36-0x00007FFA429ED000-0x00007FFA429EE000-memory.dmp

Filesize
4KB

Download
memory/4192-37-0x00007FFA42950000-0x00007FFA42B45000-memory.dmp

Filesize
2.0MB

Download
memory/4192-38-0x00007FFA42950000-0x00007FFA42B45000-memory.dmp

Filesize
2.0MB

Download
memory/4192-1-0x00007FFA429ED000-0x00007FFA429EE000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads