smokeloader | f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a

General

Target

f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe
Size

190KB
MD5

ccef5c71b280ae29fb27efa5dfccc214
SHA1

3864d99bc362d1b7b01f4814d783923face75a50
SHA256

f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a
SHA512

1e4e5170735c3aa45f608f4c3bb7f56bcecc0b5b7eb20ceed53fe3414b54efd276329fe6bf72e97aca3652a6a403e9870a8c5e25887d84b44001f15d4ec70eb0

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:

awjuvsaawjuvsa

pid process

3028 awjuvsa
992 awjuvsa
Sets service image path in registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

pid	process
3028	awjuvsa
992	awjuvsa

Suspicious use of SetThreadContext 2 IoCs

Processes:

f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exeawjuvsa

description	pid	process	target process
PID 1748 set thread context of 3280	1748	f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe	f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe
PID 3028 set thread context of 992	3028	awjuvsa	awjuvsa

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:

f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exeawjuvsa

description	ioc	process
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	awjuvsa
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	awjuvsa
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	awjuvsa
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe

Modifies data under HKEY_USERS 41 IoCs

Processes:

WaaSMedicAgent.exe

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

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe

pid	process
3280	f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe
3280	f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe
2440
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2440
2440

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

pid process

2440
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exeawjuvsa

pid process

3280 f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe
992 awjuvsa

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:

f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exeawjuvsa

description	pid	process	target process
PID 1748 wrote to memory of 3280	1748	f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe	f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe
PID 1748 wrote to memory of 3280	1748	f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe	f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe
PID 1748 wrote to memory of 3280	1748	f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe	f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe
PID 1748 wrote to memory of 3280	1748	f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe	f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe
PID 1748 wrote to memory of 3280	1748	f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe	f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe
PID 1748 wrote to memory of 3280	1748	f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe	f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe
PID 3028 wrote to memory of 992	3028	awjuvsa	awjuvsa
PID 3028 wrote to memory of 992	3028	awjuvsa	awjuvsa
PID 3028 wrote to memory of 992	3028	awjuvsa	awjuvsa
PID 3028 wrote to memory of 992	3028	awjuvsa	awjuvsa
PID 3028 wrote to memory of 992	3028	awjuvsa	awjuvsa
PID 3028 wrote to memory of 992	3028	awjuvsa	awjuvsa

C:\Users\Admin\AppData\Local\Temp\f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe
"C:\Users\Admin\AppData\Local\Temp\f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1748

C:\Users\Admin\AppData\Local\Temp\f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe
"C:\Users\Admin\AppData\Local\Temp\f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a.exe"
2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:3280

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p
1⤵
PID:3556

C:\Windows\System32\WaaSMedicAgent.exe
C:\Windows\System32\WaaSMedicAgent.exe 7bce756b652f8fd8243c2eea27993836 Mes2Tn/r9kiM1Vv+Mn0a5A.0.1.0.0.0
1⤵
- Modifies data under HKEY_USERS
PID:1192

C:\Users\Admin\AppData\Roaming\awjuvsa
C:\Users\Admin\AppData\Roaming\awjuvsa
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3028

C:\Users\Admin\AppData\Roaming\awjuvsa
C:\Users\Admin\AppData\Roaming\awjuvsa
2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:992

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\awjuvsa
MD5
ccef5c71b280ae29fb27efa5dfccc214

SHA1
3864d99bc362d1b7b01f4814d783923face75a50

SHA256
f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a

SHA512
1e4e5170735c3aa45f608f4c3bb7f56bcecc0b5b7eb20ceed53fe3414b54efd276329fe6bf72e97aca3652a6a403e9870a8c5e25887d84b44001f15d4ec70eb0

Download Submit
C:\Users\Admin\AppData\Roaming\awjuvsa
MD5
ccef5c71b280ae29fb27efa5dfccc214

SHA1
3864d99bc362d1b7b01f4814d783923face75a50

SHA256
f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a

SHA512
1e4e5170735c3aa45f608f4c3bb7f56bcecc0b5b7eb20ceed53fe3414b54efd276329fe6bf72e97aca3652a6a403e9870a8c5e25887d84b44001f15d4ec70eb0

Download Submit
C:\Users\Admin\AppData\Roaming\awjuvsa
MD5
ccef5c71b280ae29fb27efa5dfccc214

SHA1
3864d99bc362d1b7b01f4814d783923face75a50

SHA256
f27deb3a24aaab38246363f17b387115493118b13fa547ed7610ef7f883b8b0a

SHA512
1e4e5170735c3aa45f608f4c3bb7f56bcecc0b5b7eb20ceed53fe3414b54efd276329fe6bf72e97aca3652a6a403e9870a8c5e25887d84b44001f15d4ec70eb0

Download Submit
memory/1748-130-0x00000000007B0000-0x00000000007D9000-memory.dmp

Filesize
164KB

Download
memory/1748-131-0x00000000005C0000-0x00000000005C9000-memory.dmp

Filesize
36KB

Download
memory/2440-134-0x00000000031D0000-0x00000000031E6000-memory.dmp

Filesize
88KB

Download
memory/2440-140-0x0000000003420000-0x0000000003436000-memory.dmp

Filesize
88KB

Download
memory/3028-137-0x00000000007A0000-0x00000000007C7000-memory.dmp

Filesize
156KB

Download
memory/3280-132-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3280-133-0x0000000000400000-0x0000000000409000-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