smokeloader | c80fed268a0c461e382fe561fb0e94f41f4d1c4d611858bc56ea6118293e3de1

Analysis

max time kernel
1800s
max time network
1562s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
15-04-2024 12:16

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General

Target

a041839327295fde3df12ea61374abd19c4499b87e211757c593179d6a6870d1.exe
Size

255KB
MD5

7fdba86bba0508054fd1f058a6a2d134
SHA1

131aa6889c55b9348a452fdf369fe54c2f05ba48
SHA256

a041839327295fde3df12ea61374abd19c4499b87e211757c593179d6a6870d1
SHA512

901b368bf99f8b715186d22d73bbb80a87f8498fd375b9023d798651f5c0939d01d3ec3ec50ce148699b6228aca59711883e9a30e986c1c5d18e95e8ab1967f1
SSDEEP

6144:VU8vCLXBfoCmgZw6NNTs9VUkIqj8m+z7:VU8apkQw6N6LUkpv+z7

Score

10^/10

smokeloader backdoor trojan

Malware Config

Extracted

Family

smokeloader

Version

2022

http://furubujjul.net/

http://starvestitibo.org/

http://liubertiyyyul.net/

http://bururutu44org.org/

http://nvulukuluir.net/

http://gulutina49org.org/

http://hulimudulinu.net/

http://stalnnuytyt.org/

http://nuluitnulo.me/

http://youyouumenia5.org/

http://guluiiiimnstra.net/

rc4.i32

Signatures

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
Deletes itself 1 IoCs

Processes:

pid process

1232
Executes dropped EXE 3 IoCs

Processes:

ucbrgfcucbrgfcucbrgfc

pid process

1060 ucbrgfc
1296 ucbrgfc
1532 ucbrgfc

pid	process
1232

pid	process
1060	ucbrgfc
1296	ucbrgfc
1532	ucbrgfc

Checks SCSI registry key(s) 3 TTPs 12 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

ucbrgfcucbrgfcucbrgfca041839327295fde3df12ea61374abd19c4499b87e211757c593179d6a6870d1.exe

description	ioc	process
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	ucbrgfc
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	ucbrgfc
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	ucbrgfc
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	ucbrgfc
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	ucbrgfc
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	ucbrgfc
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	ucbrgfc
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	ucbrgfc
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	a041839327295fde3df12ea61374abd19c4499b87e211757c593179d6a6870d1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	a041839327295fde3df12ea61374abd19c4499b87e211757c593179d6a6870d1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	a041839327295fde3df12ea61374abd19c4499b87e211757c593179d6a6870d1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	ucbrgfc

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

a041839327295fde3df12ea61374abd19c4499b87e211757c593179d6a6870d1.exe

pid	process
1736	a041839327295fde3df12ea61374abd19c4499b87e211757c593179d6a6870d1.exe
1736	a041839327295fde3df12ea61374abd19c4499b87e211757c593179d6a6870d1.exe
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232
1232

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

pid process

1232
Suspicious behavior: MapViewOfSection 4 IoCs

Processes:

a041839327295fde3df12ea61374abd19c4499b87e211757c593179d6a6870d1.exeucbrgfcucbrgfcucbrgfc

pid process

1736 a041839327295fde3df12ea61374abd19c4499b87e211757c593179d6a6870d1.exe
1060 ucbrgfc
1296 ucbrgfc
1532 ucbrgfc

pid	process
1232

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

description	pid	process
Token: SeShutdownPrivilege	1232
Token: SeShutdownPrivilege	1232
Token: SeShutdownPrivilege	1232
Token: SeShutdownPrivilege	1232
Token: SeShutdownPrivilege	1232
Token: SeShutdownPrivilege	1232

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

taskeng.exetaskeng.exetaskeng.exe

description	pid	process	target process
PID 1500 wrote to memory of 1060	1500	taskeng.exe	ucbrgfc
PID 1500 wrote to memory of 1060	1500	taskeng.exe	ucbrgfc
PID 1500 wrote to memory of 1060	1500	taskeng.exe	ucbrgfc
PID 1500 wrote to memory of 1060	1500	taskeng.exe	ucbrgfc
PID 2264 wrote to memory of 1296	2264	taskeng.exe	ucbrgfc
PID 2264 wrote to memory of 1296	2264	taskeng.exe	ucbrgfc
PID 2264 wrote to memory of 1296	2264	taskeng.exe	ucbrgfc
PID 2264 wrote to memory of 1296	2264	taskeng.exe	ucbrgfc
PID 680 wrote to memory of 1532	680	taskeng.exe	ucbrgfc
PID 680 wrote to memory of 1532	680	taskeng.exe	ucbrgfc
PID 680 wrote to memory of 1532	680	taskeng.exe	ucbrgfc
PID 680 wrote to memory of 1532	680	taskeng.exe	ucbrgfc

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\a041839327295fde3df12ea61374abd19c4499b87e211757c593179d6a6870d1.exe
"C:\Users\Admin\AppData\Local\Temp\a041839327295fde3df12ea61374abd19c4499b87e211757c593179d6a6870d1.exe"
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:1736

C:\Windows\system32\taskeng.exe
taskeng.exe {F1389875-63AB-4777-A68A-513F8A617051} S-1-5-21-1658372521-4246568289-2509113762-1000:PIRBKNPS\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1500

C:\Users\Admin\AppData\Roaming\ucbrgfc
C:\Users\Admin\AppData\Roaming\ucbrgfc
2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:1060

C:\Windows\system32\taskeng.exe
taskeng.exe {F2714DB0-B267-4583-BDB8-900231B365AD} S-1-5-21-1658372521-4246568289-2509113762-1000:PIRBKNPS\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2264

C:\Users\Admin\AppData\Roaming\ucbrgfc
C:\Users\Admin\AppData\Roaming\ucbrgfc
2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:1296

C:\Windows\system32\taskeng.exe
taskeng.exe {98CFCDF8-6CF4-4AB8-A936-56CA3CBB27CF} S-1-5-21-1658372521-4246568289-2509113762-1000:PIRBKNPS\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:680

C:\Users\Admin\AppData\Roaming\ucbrgfc
C:\Users\Admin\AppData\Roaming\ucbrgfc
2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:1532

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

C:\Users\Admin\AppData\Roaming\ucbrgfc

Filesize
255KB

MD5
7fdba86bba0508054fd1f058a6a2d134

SHA1
131aa6889c55b9348a452fdf369fe54c2f05ba48

SHA256
a041839327295fde3df12ea61374abd19c4499b87e211757c593179d6a6870d1

SHA512
901b368bf99f8b715186d22d73bbb80a87f8498fd375b9023d798651f5c0939d01d3ec3ec50ce148699b6228aca59711883e9a30e986c1c5d18e95e8ab1967f1

Download Submit
memory/1060-16-0x0000000000400000-0x0000000002C2E000-memory.dmp

Filesize
40.2MB

Download
memory/1060-18-0x0000000000400000-0x0000000002C2E000-memory.dmp

Filesize
40.2MB

Download
memory/1060-15-0x0000000003070000-0x0000000003170000-memory.dmp

Filesize
1024KB

Download
memory/1232-35-0x00000000029E0000-0x00000000029F6000-memory.dmp

Filesize
88KB

Download
memory/1232-26-0x00000000029B0000-0x00000000029C6000-memory.dmp

Filesize
88KB

Download
memory/1232-4-0x0000000002170000-0x0000000002186000-memory.dmp

Filesize
88KB

Download
memory/1232-17-0x0000000002990000-0x00000000029A6000-memory.dmp

Filesize
88KB

Download
memory/1296-25-0x0000000000400000-0x0000000002C2E000-memory.dmp

Filesize
40.2MB

Download
memory/1296-24-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/1296-27-0x0000000000400000-0x0000000002C2E000-memory.dmp

Filesize
40.2MB

Download
memory/1532-33-0x0000000000250000-0x0000000000350000-memory.dmp

Filesize
1024KB

Download
memory/1532-34-0x0000000000400000-0x0000000002C2E000-memory.dmp

Filesize
40.2MB

Download
memory/1532-38-0x0000000000400000-0x0000000002C2E000-memory.dmp

Filesize
40.2MB

Download
memory/1736-8-0x0000000000220000-0x0000000000229000-memory.dmp

Filesize
36KB

Download
memory/1736-5-0x0000000000400000-0x0000000002C2E000-memory.dmp

Filesize
40.2MB

Download
memory/1736-1-0x0000000002D80000-0x0000000002E80000-memory.dmp

Filesize
1024KB

Download
memory/1736-3-0x0000000000400000-0x0000000002C2E000-memory.dmp

Filesize
40.2MB

Download
memory/1736-2-0x0000000000220000-0x0000000000229000-memory.dmp

Filesize
36KB

Download