smokeloader | 40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54

General

Target

40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe
Size

334KB
MD5

cb87fd15d0d0b46696341d974ebe62d6
SHA1

d68fa4f43246c137b565366f6e8b7f08e768f06f
SHA256

40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54
SHA512

852d1174ea56c65be54ff938c867cc2f37977f59a85b2bc6e00096e0e8043b9f32f64245c847a297da78529625f2b5d6d0857f857e6a3ca57605a3c98a7a7af4

Score

10^/10

smokeloader backdoor persistence trojan

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://host-data-coin-11.com/

http://file-coin-host-12.com/

rc4.i32

Signatures

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
Sets service image path in registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

Suspicious use of SetThreadContext 1 IoCs

Processes:

40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe

description	pid	process	target process
PID 3836 set thread context of 3420	3836	40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe	40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.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

Processes:

40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe

Modifies data under HKEY_USERS 41 IoCs

Processes:

WaaSMedicAgent.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	WaaSMedicAgent.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe

pid	process
3420	40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe
3420	40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe
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Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

pid process

2384
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe

pid process

3420 40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe

pid	process
2384

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe

description	pid	process	target process
PID 3836 wrote to memory of 3420	3836	40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe	40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe
PID 3836 wrote to memory of 3420	3836	40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe	40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe
PID 3836 wrote to memory of 3420	3836	40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe	40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe
PID 3836 wrote to memory of 3420	3836	40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe	40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe
PID 3836 wrote to memory of 3420	3836	40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe	40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe
PID 3836 wrote to memory of 3420	3836	40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe	40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe

C:\Users\Admin\AppData\Local\Temp\40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe
"C:\Users\Admin\AppData\Local\Temp\40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3836

C:\Users\Admin\AppData\Local\Temp\40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe
"C:\Users\Admin\AppData\Local\Temp\40bd2aafaaf6619b5711338e6c88fe161ca690a0bc6421c48ec38f6ed11aef54.exe"
2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:3420

C:\Windows\System32\WaaSMedicAgent.exe
C:\Windows\System32\WaaSMedicAgent.exe 86e4f5a7b16a3a7cef68484c71fbc806 pENXZnoQfkS8lHBIlpwrEQ.0.1.0.0.0
1⤵
- Modifies data under HKEY_USERS
PID:3096

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p
1⤵
PID:1836

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/2384-134-0x00000000007E0000-0x00000000007F6000-memory.dmp

Filesize
88KB

Download
memory/3420-131-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3420-133-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3836-130-0x0000000000510000-0x000000000053B000-memory.dmp

Filesize
172KB

Download
memory/3836-132-0x00000000004F0000-0x00000000004F9000-memory.dmp

Filesize
36KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads