smokeloader | 4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270

General

Target

4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe
Size

356KB
MD5

5b72fe4706365d32e5b0c812f88e413c
SHA1

1feb15e94bfd6e83a05dca687c396327b555c22c
SHA256

4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270
SHA512

7fd8f16cfe0862a3e0ee2dd60fd7f2c668a259fe27ebbf889b2f329adce81a390b4a045b1c23bc66a9b2b192f07f176fcd26b76f00f2c35bb823f0fd1a313f9b

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:

4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe

description	pid	process	target process
PID 624 set thread context of 1340	624	4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe	4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.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:

4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.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\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	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\Microsoft\SystemCertificates\TrustedPeople\CRLs	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\Policies\Microsoft\SystemCertificates\CA\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\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\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\Policies\Microsoft\SystemCertificates\trust\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	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\SmartCardRoot\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	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\CA\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	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\Microsoft\SystemCertificates\TrustedPeople\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	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

Modifies registry class 2 IoCs

Processes:

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\
Key created	\REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe

pid	process
1340	4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe
1340	4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520
2520

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

pid process

2520
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe

pid process

1340 4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe

pid	process
2520

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

description	pid	process
Token: SeShutdownPrivilege	2520
Token: SeCreatePagefilePrivilege	2520
Token: SeShutdownPrivilege	2520
Token: SeCreatePagefilePrivilege	2520
Token: SeShutdownPrivilege	2520
Token: SeCreatePagefilePrivilege	2520

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe

description	pid	process	target process
PID 624 wrote to memory of 1340	624	4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe	4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe
PID 624 wrote to memory of 1340	624	4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe	4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe
PID 624 wrote to memory of 1340	624	4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe	4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe
PID 624 wrote to memory of 1340	624	4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe	4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe
PID 624 wrote to memory of 1340	624	4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe	4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe
PID 624 wrote to memory of 1340	624	4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe	4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe

C:\Users\Admin\AppData\Local\Temp\4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe
"C:\Users\Admin\AppData\Local\Temp\4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:624

C:\Users\Admin\AppData\Local\Temp\4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe
"C:\Users\Admin\AppData\Local\Temp\4e02e727f1caeed64b2765770829c9395c6da81aac975c702d8fd78aebb8f270.exe"
2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:1340

C:\Windows\System32\WaaSMedicAgent.exe
C:\Windows\System32\WaaSMedicAgent.exe 483e5287e50d5c07a435fdab4a35ec78 Pjx81x9EX0yx/8/CJ1J92A.0.1.0.0.0
1⤵
- Modifies data under HKEY_USERS
PID:2572

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/624-130-0x00000000005D0000-0x00000000005FB000-memory.dmp

Filesize
172KB

Download
memory/624-132-0x0000000000550000-0x0000000000559000-memory.dmp

Filesize
36KB

Download
memory/1340-131-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1340-133-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2520-134-0x00000000007F0000-0x0000000000806000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads