66b1c81f08c8dc54566b066c990edb24d0bdd946a503255d68ec2f66e85643db

General

Target

Overdue-Debt-839198073-03042021.xls
Size

76KB
MD5

5e35d6b84936fe6713eae86f0344b02a
SHA1

9d954d33564c160aaf759a37d4263abfceeaaa76
SHA256

66b1c81f08c8dc54566b066c990edb24d0bdd946a503255d68ec2f66e85643db
SHA512

aff6a95a03589790f02bbf6fafb6624412a01297abc072a91ddab61c8a0fb0adf060c42bb7fa807b6522711c0d2026929c20d6f77255a5eeb695c0750de4e777

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://stumbletrouser.com/hpbifbnnuauj/44259.8060328704.jpg

xlm40.dropper

http://bewitchedcracks.com/zmihkvffum/44259.8060328704.jpg

xlm40.dropper

http://hoverknot.com/ebifn/44259.8060328704.jpg

xlm40.dropper

http://embracepart.com/arphdhodl/44259.8060328704.jpg

xlm40.dropper

http://fathesrlyunny.com/zrvmj/44259.8060328704.jpg

Signatures

Process spawned unexpected child process 5 IoCs

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

Processes:

rundll32.exerundll32.exerundll32.exerundll32.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	552	1340	rundll32.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1304	1340	rundll32.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	360	1340	rundll32.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	692	1340	rundll32.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1056	1340	rundll32.exe	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-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\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-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1340 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

1340 EXCEL.EXE
1340 EXCEL.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1340 EXCEL.EXE
1340 EXCEL.EXE
1340 EXCEL.EXE

pid	process
1340	EXCEL.EXE

pid	process
1340	EXCEL.EXE
1340	EXCEL.EXE

pid	process
1340	EXCEL.EXE
1340	EXCEL.EXE
1340	EXCEL.EXE

Suspicious use of WriteProcessMemory 35 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1340 wrote to memory of 552	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 552	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 552	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 552	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 552	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 552	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 552	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 1304	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 1304	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 1304	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 1304	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 1304	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 1304	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 1304	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 360	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 360	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 360	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 360	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 360	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 360	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 360	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 692	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 692	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 692	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 692	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 692	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 692	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 692	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 1056	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 1056	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 1056	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 1056	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 1056	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 1056	1340	EXCEL.EXE	rundll32.exe
PID 1340 wrote to memory of 1056	1340	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\Overdue-Debt-839198073-03042021.xls
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1340

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\Vijaser.lasjr,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:552

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\Vijaser.lasjr1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1304

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\Vijaser.lasjr2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:360

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\Vijaser.lasjr3,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:692

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\Vijaser.lasjr4,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1056

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

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Downloads

memory/360-10-0x0000000000000000-mapping.dmp

Download
memory/552-6-0x0000000000000000-mapping.dmp

Download
memory/552-7-0x0000000076691000-0x0000000076693000-memory.dmp

Filesize
8KB

Download
memory/604-5-0x000007FEF7D20000-0x000007FEF7F9A000-memory.dmp

Filesize
2.5MB

Download
memory/692-12-0x0000000000000000-mapping.dmp

Download
memory/1056-14-0x0000000000000000-mapping.dmp

Download
memory/1304-8-0x0000000000000000-mapping.dmp

Download
memory/1340-2-0x000000002FA01000-0x000000002FA04000-memory.dmp

Filesize
12KB

Download
memory/1340-3-0x00000000718D1000-0x00000000718D3000-memory.dmp

Filesize
8KB

Download
memory/1340-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads