smokeloader | 4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff

General

Target

4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe
Size

241KB
MD5

b2e39037722559ca16abbf296adb276a
SHA1

2269b753c5a938cb1a33a7bd160a52e80d4bb43c
SHA256

4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff
SHA512

7ed20f873fde16393ef3e8d6a73c7e67754027b3ae3655aa3eb5fbd5215c6f08965be7680e2194a9298d4aadde519e9535a6b789dab2787a70bbe8c55e1a491b

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:

4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe

description	pid	process	target process
PID 1408 set thread context of 3956	1408	4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe	4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.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:

4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.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\Microsoft\SystemCertificates\trust\CTLs	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\Microsoft\SystemCertificates\CA\CTLs	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\Policies\Microsoft\SystemCertificates\TrustedPeople\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	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\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	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	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	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\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\Root\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\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\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\Certificates	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\Microsoft\SystemCertificates\trust\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	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\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	WaaSMedicAgent.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe

pid	process
3956	4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe
3956	4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe
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Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

pid process

2308
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe

pid process

3956 4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

description pid process

Token: SeShutdownPrivilege 2308
Token: SeCreatePagefilePrivilege 2308

pid	process
2308

description	pid	process
Token: SeShutdownPrivilege	2308
Token: SeCreatePagefilePrivilege	2308

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe

description	pid	process	target process
PID 1408 wrote to memory of 3956	1408	4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe	4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe
PID 1408 wrote to memory of 3956	1408	4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe	4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe
PID 1408 wrote to memory of 3956	1408	4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe	4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe
PID 1408 wrote to memory of 3956	1408	4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe	4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe
PID 1408 wrote to memory of 3956	1408	4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe	4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe
PID 1408 wrote to memory of 3956	1408	4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe	4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe

C:\Users\Admin\AppData\Local\Temp\4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe
"C:\Users\Admin\AppData\Local\Temp\4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1408

C:\Users\Admin\AppData\Local\Temp\4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe
"C:\Users\Admin\AppData\Local\Temp\4d463a86538863cb425e7edf7ccfeac12f1abbd728b3f499408d09c6abf210ff.exe"
2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:3956

C:\Windows\System32\WaaSMedicAgent.exe
C:\Windows\System32\WaaSMedicAgent.exe ecef50ee41138fccf3761f9e09536804 GkRAjjGHM0u+QhwM/RuLEA.0.1.0.0.0
1⤵
- Modifies data under HKEY_USERS
PID:2492

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k wusvcs -p
1⤵
PID:3904

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/1408-130-0x0000000000540000-0x0000000000568000-memory.dmp

Filesize
160KB

Download
memory/1408-132-0x0000000000520000-0x0000000000529000-memory.dmp

Filesize
36KB

Download
memory/2308-134-0x0000000001510000-0x0000000001526000-memory.dmp

Filesize
88KB

Download
memory/3956-131-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3956-133-0x0000000000400000-0x0000000000409000-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