07ba32c20ac0dc07a85fe7736d41d1add1504e216be3e4552afb5af0f0d343fa

General

Target

109.xls
Size

59KB
MD5

ef3ad454d6b4c4e647859a399cf3b029
SHA1

e6cc9f23e4fcb470a1d07a6592799b46ece3632e
SHA256

07ba32c20ac0dc07a85fe7736d41d1add1504e216be3e4552afb5af0f0d343fa
SHA512

08efdd07c3228c719942ad2fa6020b32f92fa35d51494f6bb73edd3f182cb53547ee5604be7622638ed720b9cd57e0d1ff2a01e6fbba9c208cde560af65355ee

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://solemnenterprise.com/k.php

Signatures

Process spawned unexpected child process 2 IoCs

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

Processes:

reg.exerundll32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1844	1968	reg.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1380	1968	rundll32.exe	EXCEL.EXE

Deletes itself 1 IoCs

Processes:

EXCEL.EXE

pid process

1968 EXCEL.EXE
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

EXCEL.EXE

description ioc process

Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1968 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
1968	EXCEL.EXE
1968	EXCEL.EXE
1968	EXCEL.EXE
1968	EXCEL.EXE
1968	EXCEL.EXE
1968	EXCEL.EXE
1968	EXCEL.EXE
1968	EXCEL.EXE
1968	EXCEL.EXE
1968	EXCEL.EXE
1968	EXCEL.EXE
1968	EXCEL.EXE

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1968 wrote to memory of 1844	1968	EXCEL.EXE	reg.exe
PID 1968 wrote to memory of 1844	1968	EXCEL.EXE	reg.exe
PID 1968 wrote to memory of 1844	1968	EXCEL.EXE	reg.exe
PID 1968 wrote to memory of 1844	1968	EXCEL.EXE	reg.exe
PID 1968 wrote to memory of 1380	1968	EXCEL.EXE	rundll32.exe
PID 1968 wrote to memory of 1380	1968	EXCEL.EXE	rundll32.exe
PID 1968 wrote to memory of 1380	1968	EXCEL.EXE	rundll32.exe
PID 1968 wrote to memory of 1380	1968	EXCEL.EXE	rundll32.exe
PID 1968 wrote to memory of 1380	1968	EXCEL.EXE	rundll32.exe
PID 1968 wrote to memory of 1380	1968	EXCEL.EXE	rundll32.exe
PID 1968 wrote to memory of 1380	1968	EXCEL.EXE	rundll32.exe

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\109.xls
1⤵
- Deletes itself
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Windows\SysWOW64\reg.exe
  "C:\Windows\system32\reg.exe" EXPORT HKCU\Software\Microsoft\Office\14.0\Excel\Security C:\Users\Public\Documents\vWgxO1bl.txt /y
  2⤵
  - Process spawned unexpected child process
  PID:1844
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Users\Public\Documents\lr8KKc1m.txt,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:1380

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Public\Documents\lr8KKc1m.txt

MD5
c0cefa939af395c4b2ae62c17361aa58

SHA1
bad5470ee758ed49563ad27c1fe2e033264e285d

SHA256
ee13417d5ca9b1a0398d2920afb25ca3a28cc30e8a1d3879e4cc7b7322734a1f

SHA512
141972ac66a87fd50da1c7b98f50aea6b6ca1d549c9f62bff5d0142a89946a57fee2d8dcef92e1c7af6e87ab03c16aa31029b124289c8ccd6873516f705bf8f2

Download Submit
C:\Users\Public\Documents\vWgxO1bl.txt

MD5
1084b35cb1aecef496dfdb263760a40c

SHA1
43d95f062749f3143838fe39460b3c5d541e194a

SHA256
48ccd7a8ed9873ff73eec7252ed9ce2882389aa43a5ec5ad072168c43320b25c

SHA512
9dbcfe0f39e04700f252b95cfb73a7977fe7a2ffe8de98510c9f62988300754c4e8eeb0a152ad87db71b28ee8c2fcb97d136215d2898ccbee5b8837a31eb7212

Download Submit
memory/1376-8-0x000007FEF5CF0000-0x000007FEF5F6A000-memory.dmp

Filesize
2.5MB

Download
memory/1380-9-0x0000000000000000-mapping.dmp

Download
memory/1380-10-0x0000000075ED1000-0x0000000075ED3000-memory.dmp

Filesize
8KB

Download
memory/1844-6-0x0000000000000000-mapping.dmp

Download
memory/1968-2-0x000000002FB51000-0x000000002FB54000-memory.dmp

Filesize
12KB

Download
memory/1968-3-0x0000000071031000-0x0000000071033000-memory.dmp

Filesize
8KB

Download
memory/1968-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1968-5-0x0000000002090000-0x0000000002091000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads