smokeloader | fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934

Analysis

max time kernel
139s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
22/04/2024, 16:53

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General

Target
fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe
Size 329KB
Sample240422-vebzwsdf32
SHA256 fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934
MD5 5fc6f24d43bc7ca45a81d159291955d1
SHA1 72fc3ce96bd9406215cec015d70bbb67318f1e23
SHA512 b39488cfaec3bbe93fc4b22f92edfc3b2b729e6f75a472d722418b259fc9c74faae60f5126384dc242ba1b42300e60428c7c530982550625cd59e1684f7c9380
SSDEEP 6144:8OZsdXcUIAoUKjiXeZtna8UtDpiyeMTHSN+5qm:8OZQXcDkLuTa8UtteCHP
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

smokeloader 1106 backdoor trojan

Malware Config

Extracted

Family

smokeloader

Botnet

1106

Signatures

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

Loads dropped DLL 1 IoCs

pid	Process
3412	fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4340 set thread context of 3412	4340	fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe	86

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 opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4340 wrote to memory of 3412	4340	fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe	86
PID 4340 wrote to memory of 3412	4340	fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe	86
PID 4340 wrote to memory of 3412	4340	fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe	86
PID 4340 wrote to memory of 3412	4340	fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe	86
PID 4340 wrote to memory of 3412	4340	fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe	86
PID 4340 wrote to memory of 3412	4340	fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe	86

C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe
"C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4340
- C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe
  "C:\Users\Admin\AppData\Local\Temp\fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934.exe"
  2⤵
  - Loads dropped DLL
  - Checks SCSI registry key(s)
  PID:3412

C:\Windows\system32\cmd.exe
"C:\Windows\system32\cmd.exe"
1⤵
PID:924

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

4DD3.tmp

Path C:\Users\Admin\AppData\Local\Temp\4DD3.tmp
Size 1.6MB
SHA256 767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac
MD5 4f3387277ccbd6d1f21ac5c07fe4ca68
SHA1 e16506f662dc92023bf82def1d621497c8ab5890
SHA512 9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219
SSDEEP 24576:qhYK3o0FvOh/e8AuDq8TJqbEPVVdqi90gvuPGO12HoIGTufqN8:2XFvO5egq8TMbEL59JCKSN
MD5 SHA1 SHA512 SSDEEP

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memory/3412-3-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/3412-4-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/3412-2-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/3412-8-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/4340-1-0x0000000000520000-0x0000000000620000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads