2abe5df892b139bb3f88019ac0f5b2856c6dd853362dc2f723292fe8d33619c1

General

Target

cancel_sub_JPL12345678901234.xlsb
Size

241KB
MD5

b4a0b38ff2bd7619e42c0f1d1fb0171b
SHA1

c0e61bcc7139bc2342e5a9eb9a2bc056c475624d
SHA256

3cc4948d4d3cac89a74284ae4dc49d177b834f295e9f767a46dcd73726b7239d
SHA512

8830468a4f8ee1032abe7ede05fdc11fb592355c81447bf0d65b995a6d6a55fc399025084bb74bb7f4b52a14ee7a2ea79a2100480222c1da95e19b3b4a59cff5

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	1472	2116	cmd.exe	EXCEL.EXE

Blocklisted process makes network request 1 IoCs

Processes:

rundll32.exe

flow pid process

30 3908 rundll32.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

3908 rundll32.exe

flow	pid	process
30	3908	rundll32.exe

pid	process
3908	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 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

2116 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
2116	EXCEL.EXE
2116	EXCEL.EXE
2116	EXCEL.EXE
2116	EXCEL.EXE
2116	EXCEL.EXE
2116	EXCEL.EXE
2116	EXCEL.EXE
2116	EXCEL.EXE
2116	EXCEL.EXE
2116	EXCEL.EXE
2116	EXCEL.EXE
2116	EXCEL.EXE

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

EXCEL.EXEcmd.exerundll32.exe

description	pid	process	target process
PID 2116 wrote to memory of 1696	2116	EXCEL.EXE	splwow64.exe
PID 2116 wrote to memory of 1696	2116	EXCEL.EXE	splwow64.exe
PID 2116 wrote to memory of 1472	2116	EXCEL.EXE	cmd.exe
PID 2116 wrote to memory of 1472	2116	EXCEL.EXE	cmd.exe
PID 1472 wrote to memory of 3820	1472	cmd.exe	certutil.exe
PID 1472 wrote to memory of 3820	1472	cmd.exe	certutil.exe
PID 1472 wrote to memory of 2672	1472	cmd.exe	rundll32.exe
PID 1472 wrote to memory of 2672	1472	cmd.exe	rundll32.exe
PID 2672 wrote to memory of 3908	2672	rundll32.exe	rundll32.exe
PID 2672 wrote to memory of 3908	2672	rundll32.exe	rundll32.exe
PID 2672 wrote to memory of 3908	2672	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:2116

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:1696

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:1472

C:\Windows\system32\certutil.exe
certutil -decode C:\Users\Public\4802545.xs1 C:\Users\Public\4802545.xs2
3⤵
PID:3820

C:\Windows\system32\rundll32.exe
rundll32 C:\Users\Public\4802545.xs2,DF1
3⤵
- Suspicious use of WriteProcessMemory
PID:2672

C:\Windows\SysWOW64\rundll32.exe
rundll32 C:\Users\Public\4802545.xs2,DF1
4⤵
- Blocklisted process makes network request
- Loads dropped DLL
PID:3908

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
e3c91eeeec07ed08ff35991cd1f8926d

SHA1
7f4b8b7a2968977de612be4938e4d2563b388884

SHA256
975509717b69e7c6dc7e20ac3421f710591df6b8b08f1fd93b042e44403db0b9

SHA512
389f20e6f01a0a6707ad2aadce542612b3fbefeb7a586d140a471f765c84a1ec55ae19f1c4bef8d353881e1fdb16f2ae33cd9cfb3aae342f10628e54b51246da

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

MD5
cfb94c893280fd1edd40a4c74031727a

SHA1
9bf1f365e14842621854282f976b890478816a77

SHA256
3205ebcea1f138f0171ff3815d594883805b4af48a24bc0d6228d0b0ee12ddb4

SHA512
31b573054e5963c939cab24b48a8610f757ea94eba21c5101f2df3ffd8fc3120327795692feda7d448091a93b4befb389eed48e17662d7f2e3b19cc441a56988

Download Submit
\Users\Public\4802545.xs2

MD5
cfb94c893280fd1edd40a4c74031727a

SHA1
9bf1f365e14842621854282f976b890478816a77

SHA256
3205ebcea1f138f0171ff3815d594883805b4af48a24bc0d6228d0b0ee12ddb4

SHA512
31b573054e5963c939cab24b48a8610f757ea94eba21c5101f2df3ffd8fc3120327795692feda7d448091a93b4befb389eed48e17662d7f2e3b19cc441a56988

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memory/1472-180-0x0000000000000000-mapping.dmp

Download
memory/1696-179-0x0000000000000000-mapping.dmp

Download
memory/2116-118-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/2116-121-0x00007FF858F10000-0x00007FF859FFE000-memory.dmp

Filesize
16.9MB

Download
memory/2116-123-0x0000016496880000-0x0000016498775000-memory.dmp

Filesize
31.0MB

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memory/2116-122-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/2116-114-0x00007FF668F00000-0x00007FF66C4B6000-memory.dmp

Filesize
53.7MB

Download
memory/2116-117-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/2116-116-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/2116-115-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/2672-183-0x0000000000000000-mapping.dmp

Download
memory/3820-181-0x0000000000000000-mapping.dmp

Download
memory/3908-185-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads