smokeloader | fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934

Resubmissions

11-01-2023 13:54

230111-q71fqsdb89 10

27-08-2020 15:49

200827-v6tcrvw9es 10

Analysis

max time kernel
75s
max time network
111s
platform
windows10_x64
resource
win10v200722
submitted
27-08-2020 15:49

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General

Target

smoke.exe
Size

329KB
MD5

5fc6f24d43bc7ca45a81d159291955d1
SHA1

72fc3ce96bd9406215cec015d70bbb67318f1e23
SHA256

fc20b03299b8ae91e72e104ee4f18e40125b2b061f1509d1c5b3f9fac3104934
SHA512

b39488cfaec3bbe93fc4b22f92edfc3b2b729e6f75a472d722418b259fc9c74faae60f5126384dc242ba1b42300e60428c7c530982550625cd59e1684f7c9380

Score

10^/10

trojan backdoor smokeloader

Malware Config

Extracted

Family

smokeloader

Version

2019

http://protest-01242505.tk/

http://test-service012505.ru.com/

http://test-service012505.pw/

http://test-service012505.com/

http://test-service012505.site/

http://test-service012505.store/

http://test-service01242505.ru/

http://mytest-service012505.ru/

http://test-service012505.su/

http://test-service012505.info/

http://test-service012505.net/

http://test-service012505.tech/

http://test-service012505.online/

http://rutest-service012505.ru/

http://test-service01dom2505.ru/

http://test-service012505.website/

http://test-service012505.xyz/

http://test-service01pro2505.ru/

http://test-service01rus2505.ru/

http://test-service012505.eu/

rc4.i32

Signatures

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader

Loads dropped DLL 1 IoCs

pid	Process
2604	smoke.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2080 set thread context of 2604	2080	smoke.exe	72

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\ServiceProfiles\LocalService\winhttp\cachev3.dat	svchost.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	smoke.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	smoke.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	smoke.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionTime = 4badbfe09a7cd601	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecision = "0"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	svchost.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionReason = "1"	svchost.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2604	smoke.exe
2604	smoke.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3096	svchost.exe
Token: SeCreatePagefilePrivilege	3096	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2080 wrote to memory of 2604	2080	smoke.exe	72
PID 2080 wrote to memory of 2604	2080	smoke.exe	72
PID 2080 wrote to memory of 2604	2080	smoke.exe	72
PID 2080 wrote to memory of 2604	2080	smoke.exe	72
PID 2080 wrote to memory of 2604	2080	smoke.exe	72
PID 2080 wrote to memory of 2604	2080	smoke.exe	72

C:\Users\Admin\AppData\Local\Temp\smoke.exe
"C:\Users\Admin\AppData\Local\Temp\smoke.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2080
- C:\Users\Admin\AppData\Local\Temp\smoke.exe
  "C:\Users\Admin\AppData\Local\Temp\smoke.exe"
  2⤵
  - Loads dropped DLL
  - Checks SCSI registry key(s)
  - Suspicious behavior: MapViewOfSection
  PID:2604

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -s WinHttpAutoProxySvc
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:3096

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2080-0-0x00000000006D4000-0x00000000006E9000-memory.dmp

Filesize
84KB

Download
memory/2604-1-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2604-4-0x0000000001FF0000-0x0000000002007000-memory.dmp

Filesize
92KB

Download
memory/3060-6-0x0000000000FB0000-0x0000000000FB1000-memory.dmp

Filesize
4KB

Download