smokeloader | 40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573

General

Target

40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe
Size

241KB
MD5

8ecb3f0291ea4c4786268e07a3431093
SHA1

7a9f740ae1d5a4f70457ad829d9e28ff87d49bcb
SHA256

40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573
SHA512

84a9557ed396d0407ff90cb520c5d1b196b611c453b4e526110b4678df5e1e2f271cd061cc2533cdcc40565b68287fbe2976f2e0b96ef5c7d09ac9f9a6094a3f

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:

40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe

description	pid	process	target process
PID 1672 set thread context of 3020	1672	40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe	40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.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:

40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe

description	ioc	process
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe

Modifies data under HKEY_USERS 41 IoCs

Processes:

WaaSMedicAgent.exe

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

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe

pid	process
3020	40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe
3020	40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe
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Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

pid process

2492
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe

pid process

3020 40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

description pid process

Token: SeShutdownPrivilege 2492
Token: SeCreatePagefilePrivilege 2492

pid	process
2492

description	pid	process
Token: SeShutdownPrivilege	2492
Token: SeCreatePagefilePrivilege	2492

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe

description	pid	process	target process
PID 1672 wrote to memory of 3020	1672	40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe	40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe
PID 1672 wrote to memory of 3020	1672	40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe	40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe
PID 1672 wrote to memory of 3020	1672	40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe	40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe
PID 1672 wrote to memory of 3020	1672	40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe	40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe
PID 1672 wrote to memory of 3020	1672	40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe	40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe
PID 1672 wrote to memory of 3020	1672	40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe	40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe

C:\Users\Admin\AppData\Local\Temp\40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe
"C:\Users\Admin\AppData\Local\Temp\40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1672

C:\Users\Admin\AppData\Local\Temp\40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe
"C:\Users\Admin\AppData\Local\Temp\40992e098d80c2251fc947ed2c51f5add6579c91a8c09012360c6e15ffbc4573.exe"
2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:3020

C:\Windows\System32\WaaSMedicAgent.exe
C:\Windows\System32\WaaSMedicAgent.exe 0d06c3e07b5e9ef307becefd18f2dd98 L2KvMEPfV0mKrbOIcKwgBg.0.1.0.0.0
1⤵
- Modifies data under HKEY_USERS
PID:3164

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/1672-130-0x0000000000510000-0x0000000000538000-memory.dmp

Filesize
160KB

Download
memory/1672-131-0x0000000000500000-0x0000000000509000-memory.dmp

Filesize
36KB

Download
memory/2492-134-0x00000000024F0000-0x0000000002506000-memory.dmp

Filesize
88KB

Download
memory/3020-132-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3020-133-0x0000000000400000-0x0000000000409000-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