ca522d9cf74cbce1b26dc5fa09e144581aa698e9acffd5cd35672a940c8e41d3

General

Target

ca522d9cf74cbce1b26dc5fa09e144581aa698e9acffd5cd35672a940c8e41d3.xlsm
Size

32KB
MD5

106114b7bcca39c90e8b96a9ee4eacf1
SHA1

65785d4bc5347d6b9335e951cf269640f6541cf1
SHA256

ca522d9cf74cbce1b26dc5fa09e144581aa698e9acffd5cd35672a940c8e41d3
SHA512

800fbafb764b2c04e3e2b02b4ce6b8e771e399b63d6c5bbd6f0336510dcda8cc4fb6b84beac487071b9d7cb38fd1f709569f16fbe10a190f0c0dc4a72199f5a7
SSDEEP

768:cjf8WFhN7beEizXT2LxdFfPdkqstJVE6D:2EsTXrgXUndkq8E6D

Score

10^/10

discovery

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://www.alejandrovillar.com/MSL/eKDWjpa4OHRxpysOTFe/

xlm40.dropper

https://alejandrastamateas.com/web/ZxA3zHwsH3r/

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	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1992	1988	regsvr32.exe	81

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

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 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

Processes:

EXCEL.EXE

pid	Process
1988	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid	Process
1988	EXCEL.EXE
1988	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	Process
1988	EXCEL.EXE
1988	EXCEL.EXE
1988	EXCEL.EXE
1988	EXCEL.EXE
1988	EXCEL.EXE
1988	EXCEL.EXE
1988	EXCEL.EXE
1988	EXCEL.EXE
1988	EXCEL.EXE
1988	EXCEL.EXE
1988	EXCEL.EXE
1988	EXCEL.EXE

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

EXCEL.EXE

description	pid	Process	procid_target
PID 1988 wrote to memory of 1992	1988	EXCEL.EXE	87
PID 1988 wrote to memory of 1992	1988	EXCEL.EXE	87
PID 1988 wrote to memory of 1992	1988	EXCEL.EXE	87

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\ca522d9cf74cbce1b26dc5fa09e144581aa698e9acffd5cd35672a940c8e41d3.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:1988
- 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:1992

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
85ec4734091aacc85a60ef44ba8ac4a9

SHA1
f392683af835c77b7b19363c4491fd3efb7c5eda

SHA256
ea1858b1548945ddc80ce3df2098039a85437dd98d5478a358be3ba72958e05b

SHA512
9c46d9f91a7ac1043c9978c24a1ddcfa830e587fa0cb55a047c139018e99a2fb4b8af6b735e4c21311867577b65f9633ce4ec4161fe88fe1f5f7a06f1d4d136e

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

Filesize
202KB

MD5
539f9cf69b3477bbade872f9cb2c20da

SHA1
7739ad0149b311693d4d4e70020ad9f15dbf9c31

SHA256
14c16bddc40f6d3afa927344d84c04117832fe52d562dc4c9e153abfe6410f01

SHA512
4b80165fe14089298a826cd034a86039291a798f82984e8bd6966761937ea3595834ed4813140d9b8d8d36bce8be726e1bf14edae0c868738dcd79dde07bd8dd

Download Submit
memory/1988-15-0x00007FFBE9B10000-0x00007FFBE9B20000-memory.dmp

Filesize
64KB

Download
memory/1988-5-0x00007FFBEC270000-0x00007FFBEC280000-memory.dmp

Filesize
64KB

Download
memory/1988-9-0x00007FFC2C1F0000-0x00007FFC2C3E5000-memory.dmp

Filesize
2.0MB

Download
memory/1988-1-0x00007FFC2C28D000-0x00007FFC2C28E000-memory.dmp

Filesize
4KB

Download
memory/1988-6-0x00007FFC2C1F0000-0x00007FFC2C3E5000-memory.dmp

Filesize
2.0MB

Download
memory/1988-10-0x00007FFC2C1F0000-0x00007FFC2C3E5000-memory.dmp

Filesize
2.0MB

Download
memory/1988-13-0x00007FFC2C1F0000-0x00007FFC2C3E5000-memory.dmp

Filesize
2.0MB

Download
memory/1988-12-0x00007FFC2C1F0000-0x00007FFC2C3E5000-memory.dmp

Filesize
2.0MB

Download
memory/1988-17-0x00007FFC2C1F0000-0x00007FFC2C3E5000-memory.dmp

Filesize
2.0MB

Download
memory/1988-11-0x00007FFC2C1F0000-0x00007FFC2C3E5000-memory.dmp

Filesize
2.0MB

Download
memory/1988-3-0x00007FFBEC270000-0x00007FFBEC280000-memory.dmp

Filesize
64KB

Download
memory/1988-4-0x00007FFBEC270000-0x00007FFBEC280000-memory.dmp

Filesize
64KB

Download
memory/1988-14-0x00007FFBE9B10000-0x00007FFBE9B20000-memory.dmp

Filesize
64KB

Download
memory/1988-18-0x00007FFC2C1F0000-0x00007FFC2C3E5000-memory.dmp

Filesize
2.0MB

Download
memory/1988-16-0x00007FFC2C1F0000-0x00007FFC2C3E5000-memory.dmp

Filesize
2.0MB

Download
memory/1988-8-0x00007FFC2C1F0000-0x00007FFC2C3E5000-memory.dmp

Filesize
2.0MB

Download
memory/1988-7-0x00007FFC2C1F0000-0x00007FFC2C3E5000-memory.dmp

Filesize
2.0MB

Download
memory/1988-2-0x00007FFBEC270000-0x00007FFBEC280000-memory.dmp

Filesize
64KB

Download
memory/1988-42-0x00007FFC2C1F0000-0x00007FFC2C3E5000-memory.dmp

Filesize
2.0MB

Download
memory/1988-43-0x00007FFC2C28D000-0x00007FFC2C28E000-memory.dmp

Filesize
4KB

Download
memory/1988-47-0x00007FFC2C1F0000-0x00007FFC2C3E5000-memory.dmp

Filesize
2.0MB

Download
memory/1988-0-0x00007FFBEC270000-0x00007FFBEC280000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads