b834ae0cc998615fa9a21eded0af0d8009167d77b10fad933d0d5f35b38c1fb6

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.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1272	2464	regsvr32.exe	82

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

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

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 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
2464	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2464	EXCEL.EXE
2464	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2464	EXCEL.EXE
2464	EXCEL.EXE
2464	EXCEL.EXE
2464	EXCEL.EXE
2464	EXCEL.EXE
2464	EXCEL.EXE
2464	EXCEL.EXE
2464	EXCEL.EXE
2464	EXCEL.EXE
2464	EXCEL.EXE
2464	EXCEL.EXE
2464	EXCEL.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2464 wrote to memory of 1272	2464	EXCEL.EXE	90
PID 2464 wrote to memory of 1272	2464	EXCEL.EXE	90
PID 2464 wrote to memory of 1272	2464	EXCEL.EXE	90

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\b834ae0cc998615fa9a21eded0af0d8009167d77b10fad933d0d5f35b38c1fb6.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:2464
- 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:1272

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
b92a597d991754cd8065d5e8767f0a10

SHA1
481097ce24d6f64c686a36ae07f611413de11cb0

SHA256
6a1bba4de8db4c1be0507e7255f5a5c3b4338708ad68aa00930ef8ed0ff75a20

SHA512
65d8021e363dc10318becc437c715e2bd5193cf63f841b50e6c8a88aa94776fd66a85d99b692305284e97ab9768056a0ed855920ed4ae5022696cf3d5ed54b94

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

Filesize
56KB

MD5
d5cbf3235a39c09c9d292dafdf0393a5

SHA1
ae109e202e6f0965b47f38ee29b3725800939a9f

SHA256
208d15c175407bc56c9e1d1a6e31290cf8c04fe1da742e4ad0dbe06960b7f1dd

SHA512
202212aeb1cabe772e05ec7649b83be4a04b68b644a1621993e91e370dc0b9de268ea50f0dab3a74178ecb648d06b5173222d3ed1f0e31d04abeded020b079bd

Download Submit
memory/2464-8-0x00007FFC6DD70000-0x00007FFC6DF65000-memory.dmp

Filesize
2.0MB

Download
memory/2464-12-0x00007FFC2BD00000-0x00007FFC2BD10000-memory.dmp

Filesize
64KB

Download
memory/2464-5-0x00007FFC6DD70000-0x00007FFC6DF65000-memory.dmp

Filesize
2.0MB

Download
memory/2464-6-0x00007FFC6DD70000-0x00007FFC6DF65000-memory.dmp

Filesize
2.0MB

Download
memory/2464-4-0x00007FFC2DDF0000-0x00007FFC2DE00000-memory.dmp

Filesize
64KB

Download
memory/2464-7-0x00007FFC2DDF0000-0x00007FFC2DE00000-memory.dmp

Filesize
64KB

Download
memory/2464-9-0x00007FFC6DD70000-0x00007FFC6DF65000-memory.dmp

Filesize
2.0MB

Download
memory/2464-10-0x00007FFC6DD70000-0x00007FFC6DF65000-memory.dmp

Filesize
2.0MB

Download
memory/2464-0-0x00007FFC2DDF0000-0x00007FFC2DE00000-memory.dmp

Filesize
64KB

Download
memory/2464-2-0x00007FFC2DDF0000-0x00007FFC2DE00000-memory.dmp

Filesize
64KB

Download
memory/2464-11-0x00007FFC6DD70000-0x00007FFC6DF65000-memory.dmp

Filesize
2.0MB

Download
memory/2464-13-0x00007FFC2BD00000-0x00007FFC2BD10000-memory.dmp

Filesize
64KB

Download
memory/2464-3-0x00007FFC2DDF0000-0x00007FFC2DE00000-memory.dmp

Filesize
64KB

Download
memory/2464-35-0x00007FFC6DD70000-0x00007FFC6DF65000-memory.dmp

Filesize
2.0MB

Download
memory/2464-36-0x00007FFC6DE0D000-0x00007FFC6DE0E000-memory.dmp

Filesize
4KB

Download
memory/2464-37-0x00007FFC6DD70000-0x00007FFC6DF65000-memory.dmp

Filesize
2.0MB

Download
memory/2464-38-0x00007FFC6DD70000-0x00007FFC6DF65000-memory.dmp

Filesize
2.0MB

Download
memory/2464-1-0x00007FFC6DE0D000-0x00007FFC6DE0E000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads