smokeloader | e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185

General

Target

e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe
Size

352KB
MD5

425b2d09dc9b30a2659d0401f4aaba79
SHA1

f7a7057fb991161a56bf5054561ca6c66c707863
SHA256

e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185
SHA512

d0f8e6d25cf9ad28e5170d782c61d51cb7dea40ede1dc6b866834c6a5f1c27f91d3b970726301f3fb41e8669ed82f3ccfc10064b649a13563dbb16cb7926e2ed

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:

e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe

description	pid	process	target process
PID 1268 set thread context of 2248	1268	e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe	e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.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:

e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe

description	ioc	process
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe

Modifies data under HKEY_USERS 41 IoCs

Processes:

WaaSMedicAgent.exe

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

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe

pid	process
2248	e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe
2248	e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe
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Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

pid process

2316
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe

pid process

2248 e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

description pid process

Token: SeShutdownPrivilege 2316
Token: SeCreatePagefilePrivilege 2316

pid	process
2316

description	pid	process
Token: SeShutdownPrivilege	2316
Token: SeCreatePagefilePrivilege	2316

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe

description	pid	process	target process
PID 1268 wrote to memory of 2248	1268	e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe	e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe
PID 1268 wrote to memory of 2248	1268	e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe	e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe
PID 1268 wrote to memory of 2248	1268	e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe	e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe
PID 1268 wrote to memory of 2248	1268	e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe	e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe
PID 1268 wrote to memory of 2248	1268	e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe	e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe
PID 1268 wrote to memory of 2248	1268	e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe	e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe

C:\Users\Admin\AppData\Local\Temp\e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe
"C:\Users\Admin\AppData\Local\Temp\e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1268

C:\Users\Admin\AppData\Local\Temp\e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe
"C:\Users\Admin\AppData\Local\Temp\e3b31b540839dffff92b5ee74323e3ca87954f717028d633dcb63fc011da8185.exe"
2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:2248

C:\Windows\System32\WaaSMedicAgent.exe
C:\Windows\System32\WaaSMedicAgent.exe c0333e70e73cf83ceca7e83132d120bf VsQyJh57YUu1dc/cdndsNA.0.1.0.0.0
1⤵
- Modifies data under HKEY_USERS
PID:3212

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/1268-130-0x0000000000730000-0x000000000075B000-memory.dmp

Filesize
172KB

Download
memory/1268-131-0x0000000000720000-0x0000000000729000-memory.dmp

Filesize
36KB

Download
memory/2248-132-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2248-133-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2316-134-0x00000000015C0000-0x00000000015D6000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads