smokeloader | 390d7472201e8ea9bdc6c7fa2b4ab1f6faca02071f1f997037cc5f52759a9cb6

Resubmissions

12-11-2021 18:04

211112-wnzb8aahhm 10

19-11-2020 10:08

201119-rhwlt38jrx 10

18-11-2020 17:26

201118-htd4fq29va 10

Analysis

max time kernel
336s
max time network
354s
platform
windows10_x64
resource
win10-en-20211104
submitted
12-11-2021 18:04

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

HYDRA.exe
Size

2.6MB
MD5

c52bc39684c52886712971a92f339b23
SHA1

c5cb39850affb7ed322bfb0a4900e17c54f95a11
SHA256

f8c17cb375e8ccad5b0e33dae65694a1bd628f91cac6cf65dd11f50e91130c2d
SHA512

2d50c1aa6ca237b9dbe97f000a082a223618f2164c8ab42ace9f4e142c318b2fc53e91a476dbe9c2dd459942b61507df5c551bd5c692a2b2a2037e4f6bd2a12b

Score

10^/10

smokeloader backdoor persistence suricata trojan

Malware Config

Extracted

Family

smokeloader

Version

2017

http://92.53.105.14/

Signatures

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
suricata: ET MALWARE Possible Sharik/Smoke Loader Microsoft Connectivity check M3
suricata: ET MALWARE Possible Sharik/Smoke Loader Microsoft Connectivity check M3
suricata
suricata: ET MALWARE Sharik/Smoke CnC Beacon 9
suricata: ET MALWARE Sharik/Smoke CnC Beacon 9
suricata

Executes dropped EXE 7 IoCs

pid	Process
1452	yaya.exe
1172	va.exe
1564	ufx.exe
4088	sant.exe
2204	power.exe
1688	starter.exe
1732	usc.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HDAudo.vbs	va.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000\Software\Microsoft\Windows\CurrentVersion\Run	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000\Software\Microsoft\Windows\CurrentVersion\Run\Microsoft = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\feuawvhv\\crtfucwc.exe"	explorer.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

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

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
2484	SCHTASKS.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe
4088	sant.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
4088	sant.exe
4088	sant.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1732	usc.exe
Token: SeDebugPrivilege	1688	starter.exe
Token: SeDebugPrivilege	1084	powershell.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 876 wrote to memory of 1452	876	HYDRA.exe	68
PID 876 wrote to memory of 1452	876	HYDRA.exe	68
PID 876 wrote to memory of 1452	876	HYDRA.exe	68
PID 876 wrote to memory of 1172	876	HYDRA.exe	69
PID 876 wrote to memory of 1172	876	HYDRA.exe	69
PID 876 wrote to memory of 1172	876	HYDRA.exe	69
PID 876 wrote to memory of 1564	876	HYDRA.exe	70
PID 876 wrote to memory of 1564	876	HYDRA.exe	70
PID 876 wrote to memory of 1564	876	HYDRA.exe	70
PID 876 wrote to memory of 4088	876	HYDRA.exe	71
PID 876 wrote to memory of 4088	876	HYDRA.exe	71
PID 876 wrote to memory of 4088	876	HYDRA.exe	71
PID 876 wrote to memory of 2204	876	HYDRA.exe	72
PID 876 wrote to memory of 2204	876	HYDRA.exe	72
PID 876 wrote to memory of 2204	876	HYDRA.exe	72
PID 1452 wrote to memory of 1688	1452	yaya.exe	74
PID 1452 wrote to memory of 1688	1452	yaya.exe	74
PID 1564 wrote to memory of 1732	1564	ufx.exe	75
PID 1564 wrote to memory of 1732	1564	ufx.exe	75
PID 1564 wrote to memory of 1732	1564	ufx.exe	75
PID 1732 wrote to memory of 2484	1732	usc.exe	78
PID 1732 wrote to memory of 2484	1732	usc.exe	78
PID 1732 wrote to memory of 2484	1732	usc.exe	78
PID 1688 wrote to memory of 3692	1688	starter.exe	81
PID 1688 wrote to memory of 3692	1688	starter.exe	81
PID 4088 wrote to memory of 3668	4088	sant.exe	83
PID 4088 wrote to memory of 3668	4088	sant.exe	83
PID 4088 wrote to memory of 3668	4088	sant.exe	83
PID 3692 wrote to memory of 760	3692	csc.exe	84
PID 3692 wrote to memory of 760	3692	csc.exe	84
PID 2204 wrote to memory of 1084	2204	power.exe	89
PID 2204 wrote to memory of 1084	2204	power.exe	89
PID 2204 wrote to memory of 1084	2204	power.exe	89

C:\Users\Admin\AppData\Local\Temp\HYDRA.exe
"C:\Users\Admin\AppData\Local\Temp\HYDRA.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:876
- C:\Users\Admin\AppData\Roaming\yaya.exe
  C:\Users\Admin\AppData\Roaming\yaya.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:1452
- - C:\Windows\Temp\{1945BBS40-8571-3DA1-BB29-HYDRA7A13A1E}\starter.exe
    "C:\Windows\Temp\{1945BBS40-8571-3DA1-BB29-HYDRA7A13A1E}\starter.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1688
  - - C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe
      "C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\zltwkivr.cmdline"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3692
    - - C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe
        
        C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESF6A2.tmp" "c:\Users\Admin\AppData\Local\Temp\CSCF6A1.tmp"
        5⤵
        
        PID:760
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe"
      4⤵
      PID:640
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe"
      4⤵
      PID:1384
- C:\Users\Admin\AppData\Roaming\va.exe
  C:\Users\Admin\AppData\Roaming\va.exe
  2⤵
  - Executes dropped EXE
  - Drops startup file
  PID:1172
- C:\Users\Admin\AppData\Roaming\ufx.exe
  C:\Users\Admin\AppData\Roaming\ufx.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:1564
- - C:\ProgramData\ucp\usc.exe
    "C:\ProgramData\ucp\usc.exe" /ucp/usc.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1732
  - - C:\Windows\SysWOW64\SCHTASKS.exe
      SCHTASKS /Create /SC MINUTE /MO 10 /F /TN SystemOptimize /TR C:\ProgramData\ucp\usc.exe
      4⤵
      Creates scheduled task(s)
      PID:2484
- C:\Users\Admin\AppData\Roaming\sant.exe
  C:\Users\Admin\AppData\Roaming\sant.exe
  2⤵
  - Executes dropped EXE
  - Maps connected drives based on registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:4088
- - C:\Windows\SysWOW64\explorer.exe
    explorer.exe
    3⤵
    - Adds Run key to start application
    PID:3668
- C:\Users\Admin\AppData\Roaming\power.exe
  C:\Users\Admin\AppData\Roaming\power.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:2204
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1084

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1084-167-0x0000000008350000-0x0000000008351000-memory.dmp

Filesize
4KB

Download
memory/1084-178-0x0000000008C10000-0x0000000008C11000-memory.dmp

Filesize
4KB

Download
memory/1084-166-0x0000000008040000-0x0000000008041000-memory.dmp

Filesize
4KB

Download
memory/1084-165-0x00000000080B0000-0x00000000080B1000-memory.dmp

Filesize
4KB

Download
memory/1084-164-0x00000000079E0000-0x00000000079E1000-memory.dmp

Filesize
4KB

Download
memory/1084-163-0x0000000004EF2000-0x0000000004EF3000-memory.dmp

Filesize
4KB

Download
memory/1084-168-0x0000000008770000-0x0000000008771000-memory.dmp

Filesize
4KB

Download
memory/1084-169-0x00000000087C0000-0x00000000087C1000-memory.dmp

Filesize
4KB

Download
memory/1084-162-0x0000000004EF0000-0x0000000004EF1000-memory.dmp

Filesize
4KB

Download
memory/1084-161-0x0000000007A10000-0x0000000007A11000-memory.dmp

Filesize
4KB

Download
memory/1084-160-0x0000000004F90000-0x0000000004F91000-memory.dmp

Filesize
4KB

Download
memory/1084-170-0x0000000004E50000-0x0000000004E51000-memory.dmp

Filesize
4KB

Download
memory/1084-158-0x0000000004E50000-0x0000000004E51000-memory.dmp

Filesize
4KB

Download
memory/1084-209-0x0000000009920000-0x0000000009921000-memory.dmp

Filesize
4KB

Download
memory/1084-159-0x0000000004E50000-0x0000000004E51000-memory.dmp

Filesize
4KB

Download
memory/1688-144-0x0000000002702000-0x0000000002704000-memory.dmp

Filesize
8KB

Download
memory/1688-142-0x0000000002700000-0x0000000002702000-memory.dmp

Filesize
8KB

Download
memory/1688-143-0x00007FF9E21A0000-0x00007FF9E2CFD000-memory.dmp

Filesize
11.4MB

Download
memory/2204-134-0x0000000000490000-0x00000000005DA000-memory.dmp

Filesize
1.3MB

Download
memory/3668-149-0x00000000011B0000-0x00000000015EF000-memory.dmp

Filesize
4.2MB

Download
memory/3668-150-0x0000000000380000-0x000000000038A000-memory.dmp

Filesize
40KB

Download
memory/3692-156-0x0000000000920000-0x0000000000922000-memory.dmp

Filesize
8KB

Download
memory/4088-130-0x00000000001D0000-0x00000000001DA000-memory.dmp

Filesize
40KB

Download