smokeloader | d27e90665d0a697e1fea9dfc3641c9785bfbf8fbd7ef885d82788943417d1ccd

General

Target

SecuriteInfo.com.Mal.GandCrypt-A.4160.29287.exe
Size

176KB
MD5

2a838bb8b42d0fe72bb89b3129603e01
SHA1

06dff415d576c5c91c72fa821caed6059d9abdc7
SHA256

d27e90665d0a697e1fea9dfc3641c9785bfbf8fbd7ef885d82788943417d1ccd
SHA512

ef1de5a8ab7e920bf326c90b7d85bd1eac7dca688c9b825e2f574ad4617491a7ac30bd08b97ae5b843706b0f3f26817d33dd1a2b1852c6874bbcbfe460cd34e1

Score

10^/10

smokeloader tofsee backdoor bootkit evasion persistence trojan

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://xsss99.icu/upload/

http://bingooodsg.icu/upload/

http://junntd.xyz/upload/

http://ginessa11.xyz/upload/

http://overplayninsx.xyz/upload/

http://bananinze.com/upload/

http://daunimlas.com/upload/

rc4.i32

Signatures

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 3 IoCs

Processes:

2AA9.exe315E.exerdcqbltn.exe

pid process

412 2AA9.exe
596 315E.exe
1608 rdcqbltn.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031
Sets service image path in registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112
Deletes itself 1 IoCs

Processes:

pid process

1268
Loads dropped DLL 1 IoCs

Processes:

SecuriteInfo.com.Mal.GandCrypt-A.4160.29287.exe

pid process

1908 SecuriteInfo.com.Mal.GandCrypt-A.4160.29287.exe
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1067

Processes:

315E.exe

description ioc process

File opened for modification \??\PHYSICALDRIVE0 315E.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

rdcqbltn.exe

description pid process target process

PID 1608 set thread context of 1432 1608 rdcqbltn.exe svchost.exe
Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
412	2AA9.exe
596	315E.exe
1608	rdcqbltn.exe

pid	process
1268

description	ioc	process
File opened for modification	\??\PHYSICALDRIVE0	315E.exe

description	pid	process	target process
PID 1608 set thread context of 1432	1608	rdcqbltn.exe	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

Processes:

SecuriteInfo.com.Mal.GandCrypt-A.4160.29287.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	SecuriteInfo.com.Mal.GandCrypt-A.4160.29287.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	SecuriteInfo.com.Mal.GandCrypt-A.4160.29287.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	SecuriteInfo.com.Mal.GandCrypt-A.4160.29287.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

SecuriteInfo.com.Mal.GandCrypt-A.4160.29287.exe

pid	process
1908	SecuriteInfo.com.Mal.GandCrypt-A.4160.29287.exe
1908	SecuriteInfo.com.Mal.GandCrypt-A.4160.29287.exe
1268
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1268

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

SecuriteInfo.com.Mal.GandCrypt-A.4160.29287.exe

pid process

1908 SecuriteInfo.com.Mal.GandCrypt-A.4160.29287.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

315E.exe

description pid process

Token: SeShutdownPrivilege 596 315E.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

pid process

1268
1268
1268
1268
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

pid process

1268
1268
1268
1268

description	pid	process
Token: SeShutdownPrivilege	596	315E.exe

pid	process
1268
1268
1268
1268

pid	process
1268
1268
1268
1268

Suspicious use of WriteProcessMemory 38 IoCs

Processes:

2AA9.exerdcqbltn.exe

description	pid	process	target process
PID 1268 wrote to memory of 412	1268		2AA9.exe
PID 1268 wrote to memory of 412	1268		2AA9.exe
PID 1268 wrote to memory of 412	1268		2AA9.exe
PID 1268 wrote to memory of 412	1268		2AA9.exe
PID 1268 wrote to memory of 596	1268		315E.exe
PID 1268 wrote to memory of 596	1268		315E.exe
PID 1268 wrote to memory of 596	1268		315E.exe
PID 1268 wrote to memory of 596	1268		315E.exe
PID 412 wrote to memory of 616	412	2AA9.exe	cmd.exe
PID 412 wrote to memory of 616	412	2AA9.exe	cmd.exe
PID 412 wrote to memory of 616	412	2AA9.exe	cmd.exe
PID 412 wrote to memory of 616	412	2AA9.exe	cmd.exe
PID 412 wrote to memory of 828	412	2AA9.exe	cmd.exe
PID 412 wrote to memory of 828	412	2AA9.exe	cmd.exe
PID 412 wrote to memory of 828	412	2AA9.exe	cmd.exe
PID 412 wrote to memory of 828	412	2AA9.exe	cmd.exe
PID 412 wrote to memory of 1452	412	2AA9.exe	sc.exe
PID 412 wrote to memory of 1452	412	2AA9.exe	sc.exe
PID 412 wrote to memory of 1452	412	2AA9.exe	sc.exe
PID 412 wrote to memory of 1452	412	2AA9.exe	sc.exe
PID 412 wrote to memory of 1080	412	2AA9.exe	sc.exe
PID 412 wrote to memory of 1080	412	2AA9.exe	sc.exe
PID 412 wrote to memory of 1080	412	2AA9.exe	sc.exe
PID 412 wrote to memory of 1080	412	2AA9.exe	sc.exe
PID 412 wrote to memory of 1640	412	2AA9.exe	sc.exe
PID 412 wrote to memory of 1640	412	2AA9.exe	sc.exe
PID 412 wrote to memory of 1640	412	2AA9.exe	sc.exe
PID 412 wrote to memory of 1640	412	2AA9.exe	sc.exe
PID 412 wrote to memory of 1384	412	2AA9.exe	netsh.exe
PID 412 wrote to memory of 1384	412	2AA9.exe	netsh.exe
PID 412 wrote to memory of 1384	412	2AA9.exe	netsh.exe
PID 412 wrote to memory of 1384	412	2AA9.exe	netsh.exe
PID 1608 wrote to memory of 1432	1608	rdcqbltn.exe	svchost.exe
PID 1608 wrote to memory of 1432	1608	rdcqbltn.exe	svchost.exe
PID 1608 wrote to memory of 1432	1608	rdcqbltn.exe	svchost.exe
PID 1608 wrote to memory of 1432	1608	rdcqbltn.exe	svchost.exe
PID 1608 wrote to memory of 1432	1608	rdcqbltn.exe	svchost.exe
PID 1608 wrote to memory of 1432	1608	rdcqbltn.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Mal.GandCrypt-A.4160.29287.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Mal.GandCrypt-A.4160.29287.exe"
1⤵
- Loads dropped DLL
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:1908

C:\Users\Admin\AppData\Local\Temp\2AA9.exe
C:\Users\Admin\AppData\Local\Temp\2AA9.exe
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:412

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lkxgfbgz\
2⤵
PID:616

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rdcqbltn.exe" C:\Windows\SysWOW64\lkxgfbgz\
2⤵
PID:828

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create lkxgfbgz binPath= "C:\Windows\SysWOW64\lkxgfbgz\rdcqbltn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2AA9.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
PID:1452

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description lkxgfbgz "wifi internet conection"
2⤵
PID:1080

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start lkxgfbgz
2⤵
PID:1640

C:\Windows\SysWOW64\netsh.exe
"C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
2⤵
PID:1384

C:\Users\Admin\AppData\Local\Temp\315E.exe
C:\Users\Admin\AppData\Local\Temp\315E.exe
1⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
- Suspicious use of AdjustPrivilegeToken
PID:596

C:\Windows\SysWOW64\lkxgfbgz\rdcqbltn.exe
C:\Windows\SysWOW64\lkxgfbgz\rdcqbltn.exe /d"C:\Users\Admin\AppData\Local\Temp\2AA9.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1608

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
PID:1432

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

1

T1067

Modify Existing Service

New Service

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

New Service

1

T1050

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\2AA9.exe
MD5
b20716d309609aa36556998fb0af3e20

SHA1
edc1b882058cdb76101acfc4b4bfe3f9c905ce0e

SHA256
c78557d6afa3b2876ce7d243f3617682af47e06137465c4e32a423a385699dc3

SHA512
f8faa478b25fb9d126e5ee6b0ddf0e349da923469c8a648c920fcbc61f322e5d718b6d83ad717acfcc9c7d1f743cb758fc59e067a455118a230090a4291b89f4

Download Submit
C:\Users\Admin\AppData\Local\Temp\2AA9.exe
MD5
b20716d309609aa36556998fb0af3e20

SHA1
edc1b882058cdb76101acfc4b4bfe3f9c905ce0e

SHA256
c78557d6afa3b2876ce7d243f3617682af47e06137465c4e32a423a385699dc3

SHA512
f8faa478b25fb9d126e5ee6b0ddf0e349da923469c8a648c920fcbc61f322e5d718b6d83ad717acfcc9c7d1f743cb758fc59e067a455118a230090a4291b89f4

Download Submit
C:\Users\Admin\AppData\Local\Temp\315E.exe
MD5
a894918941dc35fec11435637d26c2e2

SHA1
ef6c757bd4b3fd1cfe313b7df168c53b2d5583fc

SHA256
da9733687ebdfe93f0bdb6686a3fdba6bdc2169ad08d576fc2a33dce5542f9a2

SHA512
e5c6ab538142ab2f135cb7c3b820fa6924f81aeae7ffc666d7d2a7e6f91df1dc4c74d18c0badebd8976ec2c109fa5193b95ec2bc5eca14e94b0c67470cd1b9be

Download Submit
C:\Users\Admin\AppData\Local\Temp\rdcqbltn.exe
MD5
e5d4eab188073c060b34973407befbba

SHA1
0d0f7a91d4747dceca8d1b0cdf4ef10c749d943e

SHA256
dbf628a7e9bb5bae80dfafe48fcad0574991570c7728e9b51f6c1481d93b2aac

SHA512
be8ad3025cf1244fa7c00f6d1dbd5f0cae82ff75556cbaf17c5af512f142d6833595f179edef61c8786574400fca7e1bdb3af92a45b61d7185c507dff1d5da32

Download Submit
C:\Windows\SysWOW64\lkxgfbgz\rdcqbltn.exe
MD5
e5d4eab188073c060b34973407befbba

SHA1
0d0f7a91d4747dceca8d1b0cdf4ef10c749d943e

SHA256
dbf628a7e9bb5bae80dfafe48fcad0574991570c7728e9b51f6c1481d93b2aac

SHA512
be8ad3025cf1244fa7c00f6d1dbd5f0cae82ff75556cbaf17c5af512f142d6833595f179edef61c8786574400fca7e1bdb3af92a45b61d7185c507dff1d5da32

Download Submit
\Users\Admin\AppData\Local\Temp\CC4F.tmp
MD5
d124f55b9393c976963407dff51ffa79

SHA1
2c7bbedd79791bfb866898c85b504186db610b5d

SHA256
ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef

SHA512
278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

Download Submit
memory/412-19-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/412-8-0x0000000000000000-mapping.dmp

Download
memory/412-13-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/412-12-0x0000000004620000-0x0000000004631000-memory.dmp

Filesize
68KB

Download
memory/596-27-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/596-10-0x0000000000000000-mapping.dmp

Download
memory/596-26-0x00000000043B0000-0x000000000441B000-memory.dmp

Filesize
428KB

Download
memory/596-22-0x00000000043B0000-0x00000000043C1000-memory.dmp

Filesize
68KB

Download
memory/616-16-0x0000000000000000-mapping.dmp

Download
memory/828-17-0x0000000000000000-mapping.dmp

Download
memory/1080-24-0x0000000000000000-mapping.dmp

Download
memory/1268-7-0x0000000003980000-0x0000000003996000-memory.dmp

Filesize
88KB

Download
memory/1384-32-0x0000000000000000-mapping.dmp

Download
memory/1432-36-0x0000000000089A6B-mapping.dmp

Download
memory/1432-35-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1452-21-0x0000000000000000-mapping.dmp

Download
memory/1608-39-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1608-33-0x0000000003080000-0x0000000003091000-memory.dmp

Filesize
68KB

Download
memory/1640-29-0x0000000000000000-mapping.dmp

Download
memory/1908-6-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1908-3-0x0000000076271000-0x0000000076273000-memory.dmp

Filesize
8KB

Download
memory/1908-2-0x0000000002180000-0x0000000002191000-memory.dmp

Filesize
68KB

Download
memory/1908-5-0x0000000000220000-0x0000000000229000-memory.dmp

Filesize
36KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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