tofsee | 5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3

General

Target

5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe
Size

312KB
MD5

239efbf95c2860f12e662a99b3565f48
SHA1

05c15510420333d3d737d7fe97e21d0c05ca081e
SHA256

5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3
SHA512

4b256ab638ab603aeffdcb952b08e593e05d09a2d0cf6f220afd8ab9750491ec8e8ae1371515a69fd6ad2e2633dce29848e9e00040e9e64e1300c62bc335aee3

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\xjywuaps = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

lgnkjgcd.exe

pid process

1248 lgnkjgcd.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

840 netsh.exe

pid	process
1248	lgnkjgcd.exe

pid	process
840	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\xjywuaps\ImagePath = "C:\\Windows\\SysWOW64\\xjywuaps\\lgnkjgcd.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1996 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

lgnkjgcd.exe

description pid process target process

PID 1248 set thread context of 1996 1248 lgnkjgcd.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2040 sc.exe
784 sc.exe
524 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
1996	svchost.exe

description	pid	process	target process
PID 1248 set thread context of 1996	1248	lgnkjgcd.exe	svchost.exe

pid	process
2040	sc.exe
784	sc.exe
524	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exelgnkjgcd.exe

description	pid	process	target process
PID 1960 wrote to memory of 1368	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	cmd.exe
PID 1960 wrote to memory of 1368	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	cmd.exe
PID 1960 wrote to memory of 1368	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	cmd.exe
PID 1960 wrote to memory of 1368	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	cmd.exe
PID 1960 wrote to memory of 1264	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	cmd.exe
PID 1960 wrote to memory of 1264	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	cmd.exe
PID 1960 wrote to memory of 1264	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	cmd.exe
PID 1960 wrote to memory of 1264	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	cmd.exe
PID 1960 wrote to memory of 2040	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	sc.exe
PID 1960 wrote to memory of 2040	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	sc.exe
PID 1960 wrote to memory of 2040	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	sc.exe
PID 1960 wrote to memory of 2040	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	sc.exe
PID 1960 wrote to memory of 784	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	sc.exe
PID 1960 wrote to memory of 784	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	sc.exe
PID 1960 wrote to memory of 784	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	sc.exe
PID 1960 wrote to memory of 784	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	sc.exe
PID 1960 wrote to memory of 524	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	sc.exe
PID 1960 wrote to memory of 524	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	sc.exe
PID 1960 wrote to memory of 524	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	sc.exe
PID 1960 wrote to memory of 524	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	sc.exe
PID 1248 wrote to memory of 1996	1248	lgnkjgcd.exe	svchost.exe
PID 1248 wrote to memory of 1996	1248	lgnkjgcd.exe	svchost.exe
PID 1248 wrote to memory of 1996	1248	lgnkjgcd.exe	svchost.exe
PID 1248 wrote to memory of 1996	1248	lgnkjgcd.exe	svchost.exe
PID 1248 wrote to memory of 1996	1248	lgnkjgcd.exe	svchost.exe
PID 1248 wrote to memory of 1996	1248	lgnkjgcd.exe	svchost.exe
PID 1960 wrote to memory of 840	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	netsh.exe
PID 1960 wrote to memory of 840	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	netsh.exe
PID 1960 wrote to memory of 840	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	netsh.exe
PID 1960 wrote to memory of 840	1960	5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe
"C:\Users\Admin\AppData\Local\Temp\5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1960

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xjywuaps\
2⤵
PID:1368

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lgnkjgcd.exe" C:\Windows\SysWOW64\xjywuaps\
2⤵
PID:1264

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create xjywuaps binPath= "C:\Windows\SysWOW64\xjywuaps\lgnkjgcd.exe /d\"C:\Users\Admin\AppData\Local\Temp\5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2040

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description xjywuaps "wifi internet conection"
2⤵
- Launches sc.exe
PID:784

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start xjywuaps
2⤵
- Launches sc.exe
PID:524

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⤵
- Modifies Windows Firewall
PID:840

C:\Windows\SysWOW64\xjywuaps\lgnkjgcd.exe
C:\Windows\SysWOW64\xjywuaps\lgnkjgcd.exe /d"C:\Users\Admin\AppData\Local\Temp\5dfa515315f72a107d3541ea8fa804fd364daf867578fc70e131ec52613b58c3.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1248

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:1996

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

New Service

1

T1050

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

New Service

1

T1050

Defense Evasion

Disabling Security Tools

1

T1089

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\lgnkjgcd.exe
Filesize
10.5MB

MD5
8df27c63ef103943a54fb18b30654e29

SHA1
33e67c705c0b58e94235811f6c8c46d4616e5443

SHA256
bd5b350ab7917a7bf87ef478942dfdb70787fa5cef6a59cc44b3b2aa5871c94e

SHA512
2f11e29fb237ebc672cdc9020c28b1048070157e6eabd9a2f9ebe03d5c6e153c440aa894aa0c2765df5f351c8732e8bddb5f0977fd2d63a666472c7f9e3eb586

Download Submit
C:\Windows\SysWOW64\xjywuaps\lgnkjgcd.exe
Filesize
10.5MB

MD5
8df27c63ef103943a54fb18b30654e29

SHA1
33e67c705c0b58e94235811f6c8c46d4616e5443

SHA256
bd5b350ab7917a7bf87ef478942dfdb70787fa5cef6a59cc44b3b2aa5871c94e

SHA512
2f11e29fb237ebc672cdc9020c28b1048070157e6eabd9a2f9ebe03d5c6e153c440aa894aa0c2765df5f351c8732e8bddb5f0977fd2d63a666472c7f9e3eb586

Download Submit
memory/524-63-0x0000000000000000-mapping.dmp

Download
memory/784-62-0x0000000000000000-mapping.dmp

Download
memory/840-73-0x0000000000000000-mapping.dmp

Download
memory/1248-77-0x0000000000400000-0x00000000052AF000-memory.dmp

Filesize
78.7MB

Download
memory/1248-75-0x0000000005423000-0x0000000005432000-memory.dmp

Filesize
60KB

Download
memory/1248-65-0x0000000005423000-0x0000000005432000-memory.dmp

Filesize
60KB

Download
memory/1264-58-0x0000000000000000-mapping.dmp

Download
memory/1368-56-0x0000000000000000-mapping.dmp

Download
memory/1960-60-0x0000000000400000-0x00000000052AF000-memory.dmp

Filesize
78.7MB

Download
memory/1960-55-0x00000000760F1000-0x00000000760F3000-memory.dmp

Filesize
8KB

Download
memory/1960-76-0x0000000000400000-0x00000000052AF000-memory.dmp

Filesize
78.7MB

Download
memory/1960-54-0x00000000002E3000-0x00000000002F2000-memory.dmp

Filesize
60KB

Download
memory/1960-57-0x00000000002E3000-0x00000000002F2000-memory.dmp

Filesize
60KB

Download
memory/1996-80-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/1996-67-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/1996-69-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/1996-70-0x00000000000D9A6B-mapping.dmp

Download
memory/1996-78-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2040-61-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads