a91f7282472d704822644a1305cbd2fa3d71f1880d969c5e5c2332fb1e83ff94

General

Target

a91f7282472d704822644a1305cbd2fa3d71f1880d969c5e5c2332fb1e83ff94.xls
Size

231KB
MD5

4bd33bcfa7c54af519c632d5fa26f571
SHA1

f8cd2bb9cec5ebd6db5715a636a54002d8fd3637
SHA256

a91f7282472d704822644a1305cbd2fa3d71f1880d969c5e5c2332fb1e83ff94
SHA512

4b2cb5415d314eef601d6f46e9c5bdebf2492e98626186cafd214a28663c3be3d482a6a29d5c3565826bcd7f04e792bd4aaf558afbd3968368c99f8fa872f4cd
SSDEEP

6144:eKpb8rGYrMPe3q7Q0XV5xtuEsi8/dgJ2IS7FgiJsJ4BR5043yVuBCMmnqLsCM:UzGiK4504Sy/mnqoCM

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://188.127.235.244/45734.8846040509.dat

xlm40.dropper

http://193.38.54.244/45734.8846040509.dat

xlm40.dropper

http://185.82.217.213/45734.8846040509.dat

xlm40.dropper

http://45734.8846040509.dat

Signatures

Process spawned unexpected child process 3 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	1756	4700	Rundll32.exe	83
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1656	4700	Rundll32.exe	83
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2716	4700	Rundll32.exe	83

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 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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4700	EXCEL.EXE

Suspicious use of SetWindowsHookEx 16 IoCs

pid	Process
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4700 wrote to memory of 1756	4700	EXCEL.EXE	93
PID 4700 wrote to memory of 1756	4700	EXCEL.EXE	93
PID 4700 wrote to memory of 1656	4700	EXCEL.EXE	94
PID 4700 wrote to memory of 1656	4700	EXCEL.EXE	94
PID 4700 wrote to memory of 2716	4700	EXCEL.EXE	95
PID 4700 wrote to memory of 2716	4700	EXCEL.EXE	95

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\a91f7282472d704822644a1305cbd2fa3d71f1880d969c5e5c2332fb1e83ff94.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4700
- C:\Windows\SYSTEM32\Rundll32.exe
  Rundll32 ..\Kiod.hod,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:1756
- C:\Windows\SYSTEM32\Rundll32.exe
  Rundll32 ..\Kiod.hod1,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:1656
- C:\Windows\SYSTEM32\Rundll32.exe
  Rundll32 ..\Kiod.hod2,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:2716

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

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
7ff662b3eebd62d155b18b683aa9a706

SHA1
4ca91ef0072809315e679f75ad19a437f5ba248b

SHA256
f010a9b2004e09f3155d2c4ea7689c6e24d3d745797004316f193bed71a2b0c1

SHA512
8d7cea88ed4a2252a3ee676949bce42d45278e6746bdd1494353ca26ef502ffb3f74a972641f96e4986aaa019e829756789f6e86e984abd8d42028d62b0e8d28

Download Submit
memory/4700-12-0x00007FF99AF50000-0x00007FF99B145000-memory.dmp

Filesize
2.0MB

Download
memory/4700-11-0x00007FF99AF50000-0x00007FF99B145000-memory.dmp

Filesize
2.0MB

Download
memory/4700-2-0x00007FF95AFD0000-0x00007FF95AFE0000-memory.dmp

Filesize
64KB

Download
memory/4700-0-0x00007FF95AFD0000-0x00007FF95AFE0000-memory.dmp

Filesize
64KB

Download
memory/4700-7-0x00007FF95AFD0000-0x00007FF95AFE0000-memory.dmp

Filesize
64KB

Download
memory/4700-6-0x00007FF99AF50000-0x00007FF99B145000-memory.dmp

Filesize
2.0MB

Download
memory/4700-4-0x00007FF95AFD0000-0x00007FF95AFE0000-memory.dmp

Filesize
64KB

Download
memory/4700-9-0x00007FF99AF50000-0x00007FF99B145000-memory.dmp

Filesize
2.0MB

Download
memory/4700-3-0x00007FF95AFD0000-0x00007FF95AFE0000-memory.dmp

Filesize
64KB

Download
memory/4700-10-0x00007FF99AF50000-0x00007FF99B145000-memory.dmp

Filesize
2.0MB

Download
memory/4700-5-0x00007FF99AF50000-0x00007FF99B145000-memory.dmp

Filesize
2.0MB

Download
memory/4700-13-0x00007FF958C20000-0x00007FF958C30000-memory.dmp

Filesize
64KB

Download
memory/4700-8-0x00007FF99AF50000-0x00007FF99B145000-memory.dmp

Filesize
2.0MB

Download
memory/4700-14-0x00007FF99AF50000-0x00007FF99B145000-memory.dmp

Filesize
2.0MB

Download
memory/4700-15-0x00007FF958C20000-0x00007FF958C30000-memory.dmp

Filesize
64KB

Download
memory/4700-22-0x00007FF99AF50000-0x00007FF99B145000-memory.dmp

Filesize
2.0MB

Download
memory/4700-23-0x00007FF99AFED000-0x00007FF99AFEE000-memory.dmp

Filesize
4KB

Download
memory/4700-24-0x00007FF99AF50000-0x00007FF99B145000-memory.dmp

Filesize
2.0MB

Download
memory/4700-1-0x00007FF99AFED000-0x00007FF99AFEE000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads