smokeloader | c9779bfb55b855152347b89c2daa6987c5782aab933c0fc98f9aee50e2c53ba6

Analysis

max time kernel
96s
max time network
99s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
25-12-2024 02:43

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General

Target

a6ybp.exe
Size

133KB
MD5

5052c5edb614bae7449e4fe24466d312
SHA1

ac891f7448c5b5bef1e1b0d66fb6a020245131ab
SHA256

25f38d1847951f8cbf676cd97216c830462bb875c405f781ae053dd8fbfc83f8
SHA512

c67abfee80001aa589cfc823be86a41ce8ca29bcd01baf57ce588c0ace6a918c650699b397a7baf6948b65cc97e899a43eae55cc8478c7057d2696419a2aef38
SSDEEP

1536:h1i/R5w3LS++phVPt/4EPdHfXiZWOhVaXoz3ZGvFRLI4c1H35FwCUe0UgcRGx:inOLWhZPxSZbVaXVvFRL41H353U2NGx

Score

10^/10

smokeloader backdoor discovery trojan

Malware Config

Signatures

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

Loads dropped DLL 1 IoCs

pid	Process
4352	a6ybp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4992 set thread context of 4352	4992	a6ybp.exe	85

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	a6ybp.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 opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	a6ybp.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	a6ybp.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	a6ybp.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4992 wrote to memory of 4352	4992	a6ybp.exe	85
PID 4992 wrote to memory of 4352	4992	a6ybp.exe	85
PID 4992 wrote to memory of 4352	4992	a6ybp.exe	85
PID 4992 wrote to memory of 4352	4992	a6ybp.exe	85
PID 4992 wrote to memory of 4352	4992	a6ybp.exe	85
PID 4992 wrote to memory of 4352	4992	a6ybp.exe	85

C:\Users\Admin\AppData\Local\Temp\a6ybp.exe
"C:\Users\Admin\AppData\Local\Temp\a6ybp.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4992
- C:\Users\Admin\AppData\Local\Temp\a6ybp.exe
  "C:\Users\Admin\AppData\Local\Temp\a6ybp.exe"
  2⤵
  - Loads dropped DLL
  - Checks SCSI registry key(s)
  PID:4352

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

C:\Users\Admin\AppData\Local\Temp\D47F.tmp

Filesize
1.6MB

MD5
4f3387277ccbd6d1f21ac5c07fe4ca68

SHA1
e16506f662dc92023bf82def1d621497c8ab5890

SHA256
767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac

SHA512
9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

Download Submit
memory/4352-8-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/4352-4-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/4352-3-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/4992-2-0x0000000007960000-0x000000000796A000-memory.dmp

Filesize
40KB

Download
memory/4992-1-0x0000000005D60000-0x0000000005E60000-memory.dmp

Filesize
1024KB

Download
memory/4992-10-0x0000000005D60000-0x0000000005E60000-memory.dmp

Filesize
1024KB

Download