smokeloader | d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898

General

Target

d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe
Size

264KB
MD5

0ba1e64727681ab629be3617e3f1f4c7
SHA1

ec1878c56158824f139a2cd63325c33a6910b132
SHA256

d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898
SHA512

65f6d9b08f6ce19fcb76c0947e2d261110d70004036cf2b546fe3b769da7a2df1e663eca57469ef4b7e6d324ce4d3d96f60243ef4336beddc35fa9f7f791c8fe

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
Executes dropped EXE 2 IoCs

Processes:

wiviartwiviart

pid process

1340 wiviart
3124 wiviart
Sets service image path in registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

pid	process
1340	wiviart
3124	wiviart

Suspicious use of SetThreadContext 2 IoCs

Processes:

d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exewiviart

description	pid	process	target process
PID 3256 set thread context of 3944	3256	d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe	d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe
PID 1340 set thread context of 3124	1340	wiviart	wiviart

Checks SCSI registry key(s) 3 TTPs 6 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

wiviartd56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe

description	ioc	process
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	wiviart
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	wiviart
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	wiviart

Modifies data under HKEY_USERS 41 IoCs

Processes:

WaaSMedicAgent.exe

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

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe

pid	process
3944	d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe
3944	d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe
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2384

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

pid process

2384
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exewiviart

pid process

3944 d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe
3124 wiviart
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

description pid process

Token: SeShutdownPrivilege 2384
Token: SeCreatePagefilePrivilege 2384

pid	process
2384

description	pid	process
Token: SeShutdownPrivilege	2384
Token: SeCreatePagefilePrivilege	2384

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exewiviart

description	pid	process	target process
PID 3256 wrote to memory of 3944	3256	d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe	d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe
PID 3256 wrote to memory of 3944	3256	d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe	d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe
PID 3256 wrote to memory of 3944	3256	d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe	d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe
PID 3256 wrote to memory of 3944	3256	d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe	d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe
PID 3256 wrote to memory of 3944	3256	d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe	d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe
PID 3256 wrote to memory of 3944	3256	d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe	d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe
PID 1340 wrote to memory of 3124	1340	wiviart	wiviart
PID 1340 wrote to memory of 3124	1340	wiviart	wiviart
PID 1340 wrote to memory of 3124	1340	wiviart	wiviart
PID 1340 wrote to memory of 3124	1340	wiviart	wiviart
PID 1340 wrote to memory of 3124	1340	wiviart	wiviart
PID 1340 wrote to memory of 3124	1340	wiviart	wiviart

C:\Users\Admin\AppData\Local\Temp\d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe
"C:\Users\Admin\AppData\Local\Temp\d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3256

C:\Users\Admin\AppData\Local\Temp\d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe
"C:\Users\Admin\AppData\Local\Temp\d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898.exe"
2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:3944

C:\Windows\System32\WaaSMedicAgent.exe
C:\Windows\System32\WaaSMedicAgent.exe 2584a685c27e79921226bfd985193d20 lQrIatP0sESqbu2kA5qkfA.0.1.0.0.0
1⤵
- Modifies data under HKEY_USERS
PID:2352

C:\Users\Admin\AppData\Roaming\wiviart
C:\Users\Admin\AppData\Roaming\wiviart
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1340

C:\Users\Admin\AppData\Roaming\wiviart
C:\Users\Admin\AppData\Roaming\wiviart
2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:3124

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k wusvcs -p
1⤵
PID:2616

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\wiviart
MD5
0ba1e64727681ab629be3617e3f1f4c7

SHA1
ec1878c56158824f139a2cd63325c33a6910b132

SHA256
d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898

SHA512
65f6d9b08f6ce19fcb76c0947e2d261110d70004036cf2b546fe3b769da7a2df1e663eca57469ef4b7e6d324ce4d3d96f60243ef4336beddc35fa9f7f791c8fe

Download Submit
C:\Users\Admin\AppData\Roaming\wiviart
MD5
0ba1e64727681ab629be3617e3f1f4c7

SHA1
ec1878c56158824f139a2cd63325c33a6910b132

SHA256
d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898

SHA512
65f6d9b08f6ce19fcb76c0947e2d261110d70004036cf2b546fe3b769da7a2df1e663eca57469ef4b7e6d324ce4d3d96f60243ef4336beddc35fa9f7f791c8fe

Download Submit
C:\Users\Admin\AppData\Roaming\wiviart
MD5
0ba1e64727681ab629be3617e3f1f4c7

SHA1
ec1878c56158824f139a2cd63325c33a6910b132

SHA256
d56e96786b2291d678e764febe65570be5d501d79f6e02903e1afb5ea2c71898

SHA512
65f6d9b08f6ce19fcb76c0947e2d261110d70004036cf2b546fe3b769da7a2df1e663eca57469ef4b7e6d324ce4d3d96f60243ef4336beddc35fa9f7f791c8fe

Download Submit
memory/1340-139-0x0000000000540000-0x0000000000549000-memory.dmp

Filesize
36KB

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

Filesize
88KB

Download
memory/2384-141-0x0000000000810000-0x0000000000826000-memory.dmp

Filesize
88KB

Download
memory/3124-140-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3256-131-0x00000000005C0000-0x00000000005C9000-memory.dmp

Filesize
36KB

Download
memory/3256-130-0x00000000005B0000-0x00000000005B9000-memory.dmp

Filesize
36KB

Download
memory/3944-132-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3944-133-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads