5e4ad329433655e942706e02361b10c21caed15d46cf924a7ebe153932f105ae

Analysis

max time kernel
511s
max time network
514s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
28-04-2022 07:35

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General

Target

vidar.xll
Size

880KB
MD5

4ebc548df517cae4c7e3122e9c75ede6
SHA1

6e19e1e6f3a7b96cf562c2f6768f92580652d427
SHA256

6c67e1ccf77b872b1f3cf257a257d75c4995dc079945080f578b51357ccdbe55
SHA512

359be199470a83ad32db555840c5b33a6b69db96cc188d83d550639fe9fe75464529819fdf0cded9d489cb7ba03802667ac373d3ad2a3f7e4069b023c8508290

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1108	service.exe
2456	service.exe

Loads dropped DLL 2 IoCs

pid	Process
3272	EXCEL.EXE
3272	EXCEL.EXE

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1108 set thread context of 2456	1108	service.exe	89

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4884	2456	WerFault.exe	89

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 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

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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3272	EXCEL.EXE

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
1108	service.exe
1108	service.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3272	EXCEL.EXE
3272	EXCEL.EXE

Suspicious use of SetWindowsHookEx 11 IoCs

pid	Process
3272	EXCEL.EXE
3272	EXCEL.EXE
3272	EXCEL.EXE
3272	EXCEL.EXE
3272	EXCEL.EXE
3272	EXCEL.EXE
3272	EXCEL.EXE
3272	EXCEL.EXE
3272	EXCEL.EXE
3272	EXCEL.EXE
3272	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3272 wrote to memory of 1108	3272	EXCEL.EXE	88
PID 3272 wrote to memory of 1108	3272	EXCEL.EXE	88
PID 3272 wrote to memory of 1108	3272	EXCEL.EXE	88
PID 1108 wrote to memory of 2456	1108	service.exe	89
PID 1108 wrote to memory of 2456	1108	service.exe	89
PID 1108 wrote to memory of 2456	1108	service.exe	89
PID 1108 wrote to memory of 2456	1108	service.exe	89

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\vidar.xll"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3272
- C:\Users\Admin\AppData\Roaming\service.exe
  "C:\Users\Admin\AppData\Roaming\service.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1108
- - C:\Users\Admin\AppData\Roaming\service.exe
    "C:\Users\Admin\AppData\Roaming\service.exe"
    3⤵
    - Executes dropped EXE
    PID:2456
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2456 -s 204
      4⤵
      Program crash
      PID:4884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2456 -ip 2456
1⤵
PID:4340

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\vidar.xll

Filesize
880KB

MD5
4ebc548df517cae4c7e3122e9c75ede6

SHA1
6e19e1e6f3a7b96cf562c2f6768f92580652d427

SHA256
6c67e1ccf77b872b1f3cf257a257d75c4995dc079945080f578b51357ccdbe55

SHA512
359be199470a83ad32db555840c5b33a6b69db96cc188d83d550639fe9fe75464529819fdf0cded9d489cb7ba03802667ac373d3ad2a3f7e4069b023c8508290

Download Submit
C:\Users\Admin\AppData\Local\Temp\vidar.xll

Filesize
880KB

MD5
4ebc548df517cae4c7e3122e9c75ede6

SHA1
6e19e1e6f3a7b96cf562c2f6768f92580652d427

SHA256
6c67e1ccf77b872b1f3cf257a257d75c4995dc079945080f578b51357ccdbe55

SHA512
359be199470a83ad32db555840c5b33a6b69db96cc188d83d550639fe9fe75464529819fdf0cded9d489cb7ba03802667ac373d3ad2a3f7e4069b023c8508290

Download Submit
C:\Users\Admin\AppData\Roaming\service.exe

Filesize
680KB

MD5
c20495a19b01f9258ca23d01933ec47e

SHA1
1642d96fb066baaa592e6b147e7a40cb49aeb2ba

SHA256
61c1436f9b48159b56f1f71561626724682d54e1714ec722c76c3b7667f0cbb7

SHA512
b84494e422b2231141836a8ef0bbe04e6fd17c189dcbabacd8b3cbfe9dc5b224dfbefa457fb105f147350b45044e7a0363a101fe008e3610aa066bd379d4ed68

Download Submit
C:\Users\Admin\AppData\Roaming\service.exe

Filesize
680KB

MD5
c20495a19b01f9258ca23d01933ec47e

SHA1
1642d96fb066baaa592e6b147e7a40cb49aeb2ba

SHA256
61c1436f9b48159b56f1f71561626724682d54e1714ec722c76c3b7667f0cbb7

SHA512
b84494e422b2231141836a8ef0bbe04e6fd17c189dcbabacd8b3cbfe9dc5b224dfbefa457fb105f147350b45044e7a0363a101fe008e3610aa066bd379d4ed68

Download Submit
C:\Users\Admin\AppData\Roaming\service.exe

Filesize
680KB

MD5
c20495a19b01f9258ca23d01933ec47e

SHA1
1642d96fb066baaa592e6b147e7a40cb49aeb2ba

SHA256
61c1436f9b48159b56f1f71561626724682d54e1714ec722c76c3b7667f0cbb7

SHA512
b84494e422b2231141836a8ef0bbe04e6fd17c189dcbabacd8b3cbfe9dc5b224dfbefa457fb105f147350b45044e7a0363a101fe008e3610aa066bd379d4ed68

Download Submit
memory/3272-135-0x00007FFF775E0000-0x00007FFF775F0000-memory.dmp

Filesize
64KB

Download
memory/3272-133-0x00007FFF79930000-0x00007FFF79940000-memory.dmp

Filesize
64KB

Download
memory/3272-136-0x00007FFF775E0000-0x00007FFF775F0000-memory.dmp

Filesize
64KB

Download
memory/3272-142-0x000001E7FDFCC000-0x000001E7FDFCF000-memory.dmp

Filesize
12KB

Download
memory/3272-141-0x00007FFF90D20000-0x00007FFF917E1000-memory.dmp

Filesize
10.8MB

Download
memory/3272-130-0x00007FFF79930000-0x00007FFF79940000-memory.dmp

Filesize
64KB

Download
memory/3272-134-0x00007FFF79930000-0x00007FFF79940000-memory.dmp

Filesize
64KB

Download
memory/3272-138-0x000001E7FC610000-0x000001E7FC706000-memory.dmp

Filesize
984KB

Download
memory/3272-132-0x00007FFF79930000-0x00007FFF79940000-memory.dmp

Filesize
64KB

Download
memory/3272-131-0x00007FFF79930000-0x00007FFF79940000-memory.dmp

Filesize
64KB

Download
memory/3272-149-0x00007FFF79930000-0x00007FFF79940000-memory.dmp

Filesize
64KB

Download
memory/3272-150-0x00007FFF79930000-0x00007FFF79940000-memory.dmp

Filesize
64KB

Download
memory/3272-151-0x00007FFF79930000-0x00007FFF79940000-memory.dmp

Filesize
64KB

Download
memory/3272-152-0x00007FFF79930000-0x00007FFF79940000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads