smokeloader | 7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70

General

Target

7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe
Size

352KB
MD5

4a8f313059f16223ed50fe0e4a376883
SHA1

820d6c0564839a6b4e5c067ff3d323ca1ec0f441
SHA256

7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70
SHA512

58c840e99dbb39b07e27f56466e0068b18a6787d5534f273a6a8056c795e234e9428a671afc589170928452241ee41289483c7567e4731ff24e4c88de21b1fb8

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:

ihucvwwihucvww

pid process

924 ihucvww
3528 ihucvww
Sets service image path in registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

pid	process
924	ihucvww
3528	ihucvww

Suspicious use of SetThreadContext 2 IoCs

Processes:

7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exeihucvww

description	pid	process	target process
PID 1636 set thread context of 3236	1636	7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe	7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe
PID 924 set thread context of 3528	924	ihucvww	ihucvww

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:

7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exeihucvww

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	ihucvww
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	ihucvww
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	ihucvww

Modifies data under HKEY_USERS 41 IoCs

Processes:

WaaSMedicAgent.exe

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

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe

pid	process
3236	7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe
3236	7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe
2440
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2440

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

pid process

2440
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exeihucvww

pid process

3236 7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe
3528 ihucvww

pid	process
2440

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

description	pid	process
Token: SeShutdownPrivilege	2440
Token: SeCreatePagefilePrivilege	2440
Token: SeShutdownPrivilege	2440
Token: SeCreatePagefilePrivilege	2440

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exeihucvww

description	pid	process	target process
PID 1636 wrote to memory of 3236	1636	7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe	7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe
PID 1636 wrote to memory of 3236	1636	7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe	7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe
PID 1636 wrote to memory of 3236	1636	7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe	7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe
PID 1636 wrote to memory of 3236	1636	7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe	7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe
PID 1636 wrote to memory of 3236	1636	7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe	7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe
PID 1636 wrote to memory of 3236	1636	7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe	7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe
PID 924 wrote to memory of 3528	924	ihucvww	ihucvww
PID 924 wrote to memory of 3528	924	ihucvww	ihucvww
PID 924 wrote to memory of 3528	924	ihucvww	ihucvww
PID 924 wrote to memory of 3528	924	ihucvww	ihucvww
PID 924 wrote to memory of 3528	924	ihucvww	ihucvww
PID 924 wrote to memory of 3528	924	ihucvww	ihucvww

C:\Users\Admin\AppData\Local\Temp\7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe
"C:\Users\Admin\AppData\Local\Temp\7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1636

C:\Users\Admin\AppData\Local\Temp\7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe
"C:\Users\Admin\AppData\Local\Temp\7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70.exe"
2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:3236

C:\Windows\System32\WaaSMedicAgent.exe
C:\Windows\System32\WaaSMedicAgent.exe b06c81f1ccec57328007159af70db866 SQSLfwJpYki1XtwICMDPjw.0.1.0.0.0
1⤵
- Modifies data under HKEY_USERS
PID:3104

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p
1⤵
PID:1720

C:\Users\Admin\AppData\Roaming\ihucvww
C:\Users\Admin\AppData\Roaming\ihucvww
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:924

C:\Users\Admin\AppData\Roaming\ihucvww
C:\Users\Admin\AppData\Roaming\ihucvww
2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:3528

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

C:\Users\Admin\AppData\Roaming\ihucvww
MD5
4a8f313059f16223ed50fe0e4a376883

SHA1
820d6c0564839a6b4e5c067ff3d323ca1ec0f441

SHA256
7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70

SHA512
58c840e99dbb39b07e27f56466e0068b18a6787d5534f273a6a8056c795e234e9428a671afc589170928452241ee41289483c7567e4731ff24e4c88de21b1fb8

Download Submit
C:\Users\Admin\AppData\Roaming\ihucvww
MD5
4a8f313059f16223ed50fe0e4a376883

SHA1
820d6c0564839a6b4e5c067ff3d323ca1ec0f441

SHA256
7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70

SHA512
58c840e99dbb39b07e27f56466e0068b18a6787d5534f273a6a8056c795e234e9428a671afc589170928452241ee41289483c7567e4731ff24e4c88de21b1fb8

Download Submit
C:\Users\Admin\AppData\Roaming\ihucvww
MD5
4a8f313059f16223ed50fe0e4a376883

SHA1
820d6c0564839a6b4e5c067ff3d323ca1ec0f441

SHA256
7321f6354cc195b100bc6bf2cc3fcb7b700a96bb6f8505841c4438b61e058d70

SHA512
58c840e99dbb39b07e27f56466e0068b18a6787d5534f273a6a8056c795e234e9428a671afc589170928452241ee41289483c7567e4731ff24e4c88de21b1fb8

Download Submit
memory/924-137-0x00000000007A0000-0x00000000007CA000-memory.dmp

Filesize
168KB

Download
memory/1636-130-0x0000000000590000-0x00000000005BB000-memory.dmp

Filesize
172KB

Download
memory/1636-131-0x0000000000560000-0x0000000000569000-memory.dmp

Filesize
36KB

Download
memory/2440-134-0x00000000025B0000-0x00000000025C6000-memory.dmp

Filesize
88KB

Download
memory/2440-141-0x0000000000B80000-0x0000000000B96000-memory.dmp

Filesize
88KB

Download
memory/3236-132-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3236-133-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3528-140-0x0000000000400000-0x0000000000409000-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