aab608f07f33eb9a5c6e673b32cfdccaf8034842dd607b51f9ddc3556be04fc0

General

Target

PRMS_822004851.xls
Size

134KB
MD5

0fabeef31b401b43f6dad8a373d55d4a
SHA1

f42f36c2fbf269bba7db101991e1a5be2c185b64
SHA256

4ff4e135e3c8f23427763b635c0b38e3d7a4957e8ded530bbc1ded32c156c4c4
SHA512

69ee8d329595ae8630543a9cc4ecc82e1152b9816db02df8b2794fb786b0992f4d52250dfb9f56b93f6cbdbdc7068433dbbc45869bcd86aab1a0b02e5a1dbc85

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://190.14.37.220/44483.2101575231.dat

xlm40.dropper

http://23.106.125.233/44483.2101575231.dat

xlm40.dropper

http://178.23.190.199/44483.2101575231.dat

Signatures

Process spawned unexpected child process 3 IoCs

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

Processes:

regsvr32.exeregsvr32.exeregsvr32.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	1128	3524	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1132	3524	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1216	3524	regsvr32.exe	EXCEL.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

3524 EXCEL.EXE

Suspicious use of SetWindowsHookEx 17 IoCs

Processes:

EXCEL.EXE

pid	process
3524	EXCEL.EXE
3524	EXCEL.EXE
3524	EXCEL.EXE
3524	EXCEL.EXE
3524	EXCEL.EXE
3524	EXCEL.EXE
3524	EXCEL.EXE
3524	EXCEL.EXE
3524	EXCEL.EXE
3524	EXCEL.EXE
3524	EXCEL.EXE
3524	EXCEL.EXE
3524	EXCEL.EXE
3524	EXCEL.EXE
3524	EXCEL.EXE
3524	EXCEL.EXE
3524	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3524 wrote to memory of 1128	3524	EXCEL.EXE	regsvr32.exe
PID 3524 wrote to memory of 1128	3524	EXCEL.EXE	regsvr32.exe
PID 3524 wrote to memory of 1132	3524	EXCEL.EXE	regsvr32.exe
PID 3524 wrote to memory of 1132	3524	EXCEL.EXE	regsvr32.exe
PID 3524 wrote to memory of 1216	3524	EXCEL.EXE	regsvr32.exe
PID 3524 wrote to memory of 1216	3524	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\PRMS_822004851.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3524

C:\Windows\SYSTEM32\regsvr32.exe
regsvr32 -silent ..\Celod.wac
2⤵
- Process spawned unexpected child process
PID:1128

C:\Windows\SYSTEM32\regsvr32.exe
regsvr32 -silent ..\Celod.wac1
2⤵
- Process spawned unexpected child process
PID:1132

C:\Windows\SYSTEM32\regsvr32.exe
regsvr32 -silent ..\Celod.wac2
2⤵
- Process spawned unexpected child process
PID:1216

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/1128-276-0x0000000000000000-mapping.dmp

Download
memory/1132-277-0x0000000000000000-mapping.dmp

Download
memory/1216-278-0x0000000000000000-mapping.dmp

Download
memory/3524-115-0x00007FFD783B0000-0x00007FFD783C0000-memory.dmp

Filesize
64KB

Download
memory/3524-116-0x00007FFD783B0000-0x00007FFD783C0000-memory.dmp

Filesize
64KB

Download
memory/3524-117-0x00007FFD783B0000-0x00007FFD783C0000-memory.dmp

Filesize
64KB

Download
memory/3524-118-0x00007FFD783B0000-0x00007FFD783C0000-memory.dmp

Filesize
64KB

Download
memory/3524-119-0x00007FFD783B0000-0x00007FFD783C0000-memory.dmp

Filesize
64KB

Download
memory/3524-121-0x0000016F58470000-0x0000016F58472000-memory.dmp

Filesize
8KB

Download
memory/3524-120-0x0000016F58470000-0x0000016F58472000-memory.dmp

Filesize
8KB

Download
memory/3524-122-0x0000016F58470000-0x0000016F58472000-memory.dmp

Filesize
8KB

Download
memory/3524-268-0x0000016F6D400000-0x0000016F6D404000-memory.dmp

Filesize
16KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads