smokeloader | 55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f

General

Target

55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe
Size

264KB
MD5

2c9c93a67aa6cbcb5fec425b62556148
SHA1

cb981f95bb064332fb05c680bef4bac220e18a60
SHA256

55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f
SHA512

cc53ab8fd382dd05310cebfa474a0125b7072a8043551e34698eee60ad63b651ae2f19179197ee9c97093c0ebf551706b032877c4ab55163153f53bdc74d9c3a

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:

svghihcsvghihc

pid process

3428 svghihc
3044 svghihc
Sets service image path in registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

pid	process
3428	svghihc
3044	svghihc

Suspicious use of SetThreadContext 2 IoCs

Processes:

55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exesvghihc

description	pid	process	target process
PID 3416 set thread context of 1964	3416	55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe	55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe
PID 3428 set thread context of 3044	3428	svghihc	svghihc

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:

55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exesvghihc

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	svghihc
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	svghihc
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	svghihc

Modifies data under HKEY_USERS 41 IoCs

Processes:

WaaSMedicAgent.exe

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

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe

pid	process
1964	55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe
1964	55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe
2420
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2420

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

pid process

2420
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exesvghihc

pid process

1964 55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe
3044 svghihc

pid	process
2420

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

description	pid	process
Token: SeShutdownPrivilege	2420
Token: SeCreatePagefilePrivilege	2420
Token: SeShutdownPrivilege	2420
Token: SeCreatePagefilePrivilege	2420

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exesvghihc

description	pid	process	target process
PID 3416 wrote to memory of 1964	3416	55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe	55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe
PID 3416 wrote to memory of 1964	3416	55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe	55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe
PID 3416 wrote to memory of 1964	3416	55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe	55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe
PID 3416 wrote to memory of 1964	3416	55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe	55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe
PID 3416 wrote to memory of 1964	3416	55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe	55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe
PID 3416 wrote to memory of 1964	3416	55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe	55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe
PID 3428 wrote to memory of 3044	3428	svghihc	svghihc
PID 3428 wrote to memory of 3044	3428	svghihc	svghihc
PID 3428 wrote to memory of 3044	3428	svghihc	svghihc
PID 3428 wrote to memory of 3044	3428	svghihc	svghihc
PID 3428 wrote to memory of 3044	3428	svghihc	svghihc
PID 3428 wrote to memory of 3044	3428	svghihc	svghihc

C:\Users\Admin\AppData\Local\Temp\55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe
"C:\Users\Admin\AppData\Local\Temp\55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3416

C:\Users\Admin\AppData\Local\Temp\55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe
"C:\Users\Admin\AppData\Local\Temp\55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f.exe"
2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:1964

C:\Windows\System32\WaaSMedicAgent.exe
C:\Windows\System32\WaaSMedicAgent.exe b50832d2b12f350e0061469a625bd568 r0ohSL2Ws0SN2Pjcvoljkw.0.1.0.0.0
1⤵
- Modifies data under HKEY_USERS
PID:3792

C:\Users\Admin\AppData\Roaming\svghihc
C:\Users\Admin\AppData\Roaming\svghihc
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3428

C:\Users\Admin\AppData\Roaming\svghihc
C:\Users\Admin\AppData\Roaming\svghihc
2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:3044

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k wusvcs -p
1⤵
PID:3420

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\svghihc
MD5
2c9c93a67aa6cbcb5fec425b62556148

SHA1
cb981f95bb064332fb05c680bef4bac220e18a60

SHA256
55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f

SHA512
cc53ab8fd382dd05310cebfa474a0125b7072a8043551e34698eee60ad63b651ae2f19179197ee9c97093c0ebf551706b032877c4ab55163153f53bdc74d9c3a

Download Submit
C:\Users\Admin\AppData\Roaming\svghihc
MD5
2c9c93a67aa6cbcb5fec425b62556148

SHA1
cb981f95bb064332fb05c680bef4bac220e18a60

SHA256
55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f

SHA512
cc53ab8fd382dd05310cebfa474a0125b7072a8043551e34698eee60ad63b651ae2f19179197ee9c97093c0ebf551706b032877c4ab55163153f53bdc74d9c3a

Download Submit
C:\Users\Admin\AppData\Roaming\svghihc
MD5
2c9c93a67aa6cbcb5fec425b62556148

SHA1
cb981f95bb064332fb05c680bef4bac220e18a60

SHA256
55cbf86dbb5b1fe99a3502f383798cc15466454334df3bc4c3ffdfb95bc57c2f

SHA512
cc53ab8fd382dd05310cebfa474a0125b7072a8043551e34698eee60ad63b651ae2f19179197ee9c97093c0ebf551706b032877c4ab55163153f53bdc74d9c3a

Download Submit
memory/1964-130-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1964-133-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2420-134-0x0000000000D10000-0x0000000000D26000-memory.dmp

Filesize
88KB

Download
memory/2420-147-0x0000000000D40000-0x0000000000D56000-memory.dmp

Filesize
88KB

Download
memory/3416-131-0x0000000000890000-0x0000000000898000-memory.dmp

Filesize
32KB

Download
memory/3416-132-0x00000000008A0000-0x00000000008A9000-memory.dmp

Filesize
36KB

Download
memory/3428-144-0x0000000000580000-0x0000000000588000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads