42aeef1b5f9d53105bd3d9076b7634e1eed53f89c9e3577426f4c51441e4fca4

General

Target

cancel_sub_JPL12345678901234.xlsb
Size

267KB
MD5

21a57dbd1dad6aec8edbbaeddabac81b
SHA1

f20bdcb3970bc9fabfff60628a71cfe318d4efe9
SHA256

42aeef1b5f9d53105bd3d9076b7634e1eed53f89c9e3577426f4c51441e4fca4
SHA512

a2339ff6347d6d3dff885b8317de5a87df589462052ac2c6dc8fb09715aca149379bc7e71e7c1ba2ccae976e7d0d4d1790971db6dc92b57ab35810953bc73563

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 1 IoCs

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

Processes:

cmd.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	3952	744	cmd.exe	EXCEL.EXE

Blocklisted process makes network request 1 IoCs

Processes:

rundll32.exe

flow pid process

31 3112 rundll32.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

3112 rundll32.exe

flow	pid	process
31	3112	rundll32.exe

pid	process
3112	rundll32.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 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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	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\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

Processes:

EXCEL.EXE

pid process

744 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
744	EXCEL.EXE
744	EXCEL.EXE
744	EXCEL.EXE
744	EXCEL.EXE
744	EXCEL.EXE
744	EXCEL.EXE
744	EXCEL.EXE
744	EXCEL.EXE
744	EXCEL.EXE
744	EXCEL.EXE
744	EXCEL.EXE
744	EXCEL.EXE

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

EXCEL.EXEcmd.exerundll32.exe

description	pid	process	target process
PID 744 wrote to memory of 3768	744	EXCEL.EXE	splwow64.exe
PID 744 wrote to memory of 3768	744	EXCEL.EXE	splwow64.exe
PID 744 wrote to memory of 3952	744	EXCEL.EXE	cmd.exe
PID 744 wrote to memory of 3952	744	EXCEL.EXE	cmd.exe
PID 3952 wrote to memory of 2316	3952	cmd.exe	certutil.exe
PID 3952 wrote to memory of 2316	3952	cmd.exe	certutil.exe
PID 3952 wrote to memory of 3780	3952	cmd.exe	rundll32.exe
PID 3952 wrote to memory of 3780	3952	cmd.exe	rundll32.exe
PID 3780 wrote to memory of 3112	3780	rundll32.exe	rundll32.exe
PID 3780 wrote to memory of 3112	3780	rundll32.exe	rundll32.exe
PID 3780 wrote to memory of 3112	3780	rundll32.exe	rundll32.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\cancel_sub_JPL12345678901234.xlsb"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:744

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:3768

C:\Windows\SYSTEM32\cmd.exe
cmd.exe /c certutil -decode C:\Users\Public\4802545.xs1 C:\Users\Public\4802545.xs2 && rundll32 C:\Users\Public\4802545.xs2,DF1
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:3952

C:\Windows\system32\certutil.exe
certutil -decode C:\Users\Public\4802545.xs1 C:\Users\Public\4802545.xs2
3⤵
PID:2316

C:\Windows\system32\rundll32.exe
rundll32 C:\Users\Public\4802545.xs2,DF1
3⤵
- Suspicious use of WriteProcessMemory
PID:3780

C:\Windows\SysWOW64\rundll32.exe
rundll32 C:\Users\Public\4802545.xs2,DF1
4⤵
- Blocklisted process makes network request
- Loads dropped DLL
PID:3112

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Public\4802545.xs1

MD5
bcbb70f4818be65832fe12ddac0c7f80

SHA1
74174bb01ac70ddc2fbd1e978e8b676df6e1779f

SHA256
00443251583e39c29345f79bd1233dbcc8f4cb1ba5866d0e6b534124d3c6b80d

SHA512
5405ce84f14268e41b53d0ed964473b10aebb110df8e0a9257bb30aad29f87997e46f9a83e5103ce4c41a4a8c80e7c921cff76ed48c6deeee7a49a9204dffbfa

Download Submit
C:\Users\Public\4802545.xs2

MD5
ad7af24cebc0eb9fc18ea4d92252b664

SHA1
23caf9b06a47d3071d42e9dc11f6e6818614bb9f

SHA256
2bc60e31f8058d1be2517a27888d799229fd2a5c2b260be650d4446102ed55cc

SHA512
46afee95f7149cd304f10b06e7d7da8d922ac43b82ef7b4071fc3bdf618245ae9b33603b742506e0d95a27b1188bc242cd8473b020d8fdbe37526c2556a23361

Download Submit
\Users\Public\4802545.xs2

MD5
ad7af24cebc0eb9fc18ea4d92252b664

SHA1
23caf9b06a47d3071d42e9dc11f6e6818614bb9f

SHA256
2bc60e31f8058d1be2517a27888d799229fd2a5c2b260be650d4446102ed55cc

SHA512
46afee95f7149cd304f10b06e7d7da8d922ac43b82ef7b4071fc3bdf618245ae9b33603b742506e0d95a27b1188bc242cd8473b020d8fdbe37526c2556a23361

Download Submit
memory/744-118-0x00007FFDDC160000-0x00007FFDDC170000-memory.dmp

Filesize
64KB

Download
memory/744-117-0x00007FFDDC160000-0x00007FFDDC170000-memory.dmp

Filesize
64KB

Download
memory/744-122-0x00007FFDDC160000-0x00007FFDDC170000-memory.dmp

Filesize
64KB

Download
memory/744-121-0x00007FFDFC7D0000-0x00007FFDFD8BE000-memory.dmp

Filesize
16.9MB

Download
memory/744-123-0x00007FFDFA8D0000-0x00007FFDFC7C5000-memory.dmp

Filesize
31.0MB

Download
memory/744-114-0x00007FF6033B0000-0x00007FF606966000-memory.dmp

Filesize
53.7MB

Download
memory/744-116-0x00007FFDDC160000-0x00007FFDDC170000-memory.dmp

Filesize
64KB

Download
memory/744-115-0x00007FFDDC160000-0x00007FFDDC170000-memory.dmp

Filesize
64KB

Download
memory/2316-181-0x0000000000000000-mapping.dmp

Download
memory/3112-185-0x0000000000000000-mapping.dmp

Download
memory/3768-179-0x0000000000000000-mapping.dmp

Download
memory/3780-183-0x0000000000000000-mapping.dmp

Download
memory/3952-180-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads