smokeloader | 533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693

General

Target

533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe
Size

317KB
MD5

ba3bd892830fade9c9668ad1a72cf7b0
SHA1

5b4e26f8cd995ffa6a4212f0c7bc65b66171e3d0
SHA256

533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693
SHA512

edfb7f920bbb9aca00f505124ee77f47a55ca482a51b46a7a0398752d3c4f69953d4fc436cf7ef4bcd2605e7d2234973514392e49680529b1b5eaabad2a10401

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:

asvteacasvteac

pid process

3056 asvteac
3284 asvteac
Sets service image path in registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

pid	process
3056	asvteac
3284	asvteac

Suspicious use of SetThreadContext 2 IoCs

Processes:

533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exeasvteac

description	pid	process	target process
PID 1576 set thread context of 3836	1576	533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe	533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe
PID 3056 set thread context of 3284	3056	asvteac	asvteac

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:

533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exeasvteac

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	asvteac
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	asvteac
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	asvteac

Modifies data under HKEY_USERS 41 IoCs

Processes:

WaaSMedicAgent.exe

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

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe

pid	process
3836	533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe
3836	533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe
2432
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2432

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

pid process

2432
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exeasvteac

pid process

3836 533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe
3284 asvteac

pid	process
2432

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

description	pid	process
Token: SeShutdownPrivilege	2432
Token: SeCreatePagefilePrivilege	2432
Token: SeShutdownPrivilege	2432
Token: SeCreatePagefilePrivilege	2432

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exeasvteac

description	pid	process	target process
PID 1576 wrote to memory of 3836	1576	533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe	533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe
PID 1576 wrote to memory of 3836	1576	533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe	533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe
PID 1576 wrote to memory of 3836	1576	533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe	533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe
PID 1576 wrote to memory of 3836	1576	533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe	533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe
PID 1576 wrote to memory of 3836	1576	533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe	533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe
PID 1576 wrote to memory of 3836	1576	533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe	533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe
PID 3056 wrote to memory of 3284	3056	asvteac	asvteac
PID 3056 wrote to memory of 3284	3056	asvteac	asvteac
PID 3056 wrote to memory of 3284	3056	asvteac	asvteac
PID 3056 wrote to memory of 3284	3056	asvteac	asvteac
PID 3056 wrote to memory of 3284	3056	asvteac	asvteac
PID 3056 wrote to memory of 3284	3056	asvteac	asvteac

C:\Users\Admin\AppData\Local\Temp\533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe
"C:\Users\Admin\AppData\Local\Temp\533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1576

C:\Users\Admin\AppData\Local\Temp\533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe
"C:\Users\Admin\AppData\Local\Temp\533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693.exe"
2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:3836

C:\Windows\System32\WaaSMedicAgent.exe
C:\Windows\System32\WaaSMedicAgent.exe 22fb4940d8a0b4fc16266e0336e74e27 BGQEXfaXXUSNy+AvXw5Ntg.0.1.0.0.0
1⤵
- Modifies data under HKEY_USERS
PID:3228

C:\Users\Admin\AppData\Roaming\asvteac
C:\Users\Admin\AppData\Roaming\asvteac
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3056

C:\Users\Admin\AppData\Roaming\asvteac
C:\Users\Admin\AppData\Roaming\asvteac
2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:3284

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\asvteac
MD5
ba3bd892830fade9c9668ad1a72cf7b0

SHA1
5b4e26f8cd995ffa6a4212f0c7bc65b66171e3d0

SHA256
533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693

SHA512
edfb7f920bbb9aca00f505124ee77f47a55ca482a51b46a7a0398752d3c4f69953d4fc436cf7ef4bcd2605e7d2234973514392e49680529b1b5eaabad2a10401

Download Submit
C:\Users\Admin\AppData\Roaming\asvteac
MD5
ba3bd892830fade9c9668ad1a72cf7b0

SHA1
5b4e26f8cd995ffa6a4212f0c7bc65b66171e3d0

SHA256
533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693

SHA512
edfb7f920bbb9aca00f505124ee77f47a55ca482a51b46a7a0398752d3c4f69953d4fc436cf7ef4bcd2605e7d2234973514392e49680529b1b5eaabad2a10401

Download Submit
C:\Users\Admin\AppData\Roaming\asvteac
MD5
ba3bd892830fade9c9668ad1a72cf7b0

SHA1
5b4e26f8cd995ffa6a4212f0c7bc65b66171e3d0

SHA256
533e02f8c0d7322c9bd27e988c805152994108e0abd1f1d61b5d3f52edebb693

SHA512
edfb7f920bbb9aca00f505124ee77f47a55ca482a51b46a7a0398752d3c4f69953d4fc436cf7ef4bcd2605e7d2234973514392e49680529b1b5eaabad2a10401

Download Submit
memory/1576-131-0x00000000004C0000-0x00000000004C8000-memory.dmp

Filesize
32KB

Download
memory/1576-132-0x00000000004D0000-0x00000000004D9000-memory.dmp

Filesize
36KB

Download
memory/2432-134-0x0000000000BA0000-0x0000000000BB6000-memory.dmp

Filesize
88KB

Download
memory/2432-141-0x0000000000BD0000-0x0000000000BE6000-memory.dmp

Filesize
88KB

Download
memory/3056-139-0x00000000004C0000-0x00000000004C8000-memory.dmp

Filesize
32KB

Download
memory/3284-140-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3836-130-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3836-133-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads