smokeloader | 50b32932b9f18bcc2831aa83f4f3cca77d12540d7a78853409e18450921834ad

Analysis

max time kernel
92s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-11-2024 13:17

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General

Target

putty .exe
Size

544KB
MD5

0e64b6d4d68876c72a62d2d393fd8e15
SHA1

91451cff1cf4f6e69731c76c7b1113e455232c9c
SHA256

50b32932b9f18bcc2831aa83f4f3cca77d12540d7a78853409e18450921834ad
SHA512

1cf9e4917fae854df6fbc844574f1a2874c8033b90a189777a292adfbee21b7a3825352935e2d65da1d14ef7603ca16d69fb1b12843329fdf43257c527b77d1e
SSDEEP

12288:QiK05T+NhaEsDPEYkk3vNLXdVonSyNAx2ssT5E04j:KttcKivRdWnSyErsG0

Score

10^/10

smokeloader backdoor discovery trojan

Malware Config

Signatures

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
Smokeloader family
smokeloader

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2960 set thread context of 4840	2960	putty .exe	91

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	putty .exe

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI 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 enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	AddInProcess32.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	AddInProcess32.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2960	putty .exe
2960	putty .exe
2960	putty .exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2960	putty .exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2960 wrote to memory of 4840	2960	putty .exe	91
PID 2960 wrote to memory of 4840	2960	putty .exe	91
PID 2960 wrote to memory of 4840	2960	putty .exe	91
PID 2960 wrote to memory of 4840	2960	putty .exe	91
PID 2960 wrote to memory of 4840	2960	putty .exe	91
PID 2960 wrote to memory of 4840	2960	putty .exe	91

C:\Users\Admin\AppData\Local\Temp\putty .exe
"C:\Users\Admin\AppData\Local\Temp\putty .exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2960
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  - Checks SCSI registry key(s)
  PID:4840

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2960-6-0x0000000074F90000-0x0000000075740000-memory.dmp

Filesize
7.7MB

Download
memory/2960-8-0x0000000074F90000-0x0000000075740000-memory.dmp

Filesize
7.7MB

Download
memory/2960-2-0x0000000004D40000-0x0000000004DDC000-memory.dmp

Filesize
624KB

Download
memory/2960-3-0x0000000005390000-0x0000000005934000-memory.dmp

Filesize
5.6MB

Download
memory/2960-4-0x0000000004E80000-0x0000000004F12000-memory.dmp

Filesize
584KB

Download
memory/2960-5-0x0000000004CD0000-0x0000000004D14000-memory.dmp

Filesize
272KB

Download
memory/2960-1-0x0000000001000000-0x000000000108C000-memory.dmp

Filesize
560KB

Download
memory/2960-7-0x00000000052A0000-0x00000000052AA000-memory.dmp

Filesize
40KB

Download
memory/2960-0-0x0000000074F9E000-0x0000000074F9F000-memory.dmp

Filesize
4KB

Download
memory/2960-9-0x0000000074F9E000-0x0000000074F9F000-memory.dmp

Filesize
4KB

Download
memory/2960-10-0x0000000074F90000-0x0000000075740000-memory.dmp

Filesize
7.7MB

Download
memory/2960-11-0x00000000068F0000-0x000000000690A000-memory.dmp

Filesize
104KB

Download
memory/2960-12-0x0000000007030000-0x0000000007036000-memory.dmp

Filesize
24KB

Download
memory/2960-15-0x0000000074F90000-0x0000000075740000-memory.dmp

Filesize
7.7MB

Download
memory/4840-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download