tofsee | e78965bb611ca20f0dd54e20a28a4edb801aa2cd07bc2acf21386979df7a0a8e

General

Target

06638a7f94e86279d3188c9d02d54029.exe
Size

13.4MB
MD5

06638a7f94e86279d3188c9d02d54029
SHA1

985ec19800fbf08a21780792671f5359da739ed6
SHA256

e78965bb611ca20f0dd54e20a28a4edb801aa2cd07bc2acf21386979df7a0a8e
SHA512

6f9839849f8bca21d5d2b431b8d6bda772d00846f104fffe77eb7bd80a094822b8c23bf316315dc8a9afe561d8e5e1c727e873a2f2443cd50ab17301e952cdba

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

njdjprja.exe

pid process

1352 njdjprja.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:

svchost.exe

pid process

632 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

njdjprja.exe

description pid process target process

PID 1352 set thread context of 632 1352 njdjprja.exe svchost.exe
Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.

pid	process
1352	njdjprja.exe

pid	process
632	svchost.exe

description	pid	process	target process
PID 1352 set thread context of 632	1352	njdjprja.exe	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

06638a7f94e86279d3188c9d02d54029.exenjdjprja.exe

description	pid	process	target process
PID 788 wrote to memory of 2032	788	06638a7f94e86279d3188c9d02d54029.exe	cmd.exe
PID 788 wrote to memory of 2032	788	06638a7f94e86279d3188c9d02d54029.exe	cmd.exe
PID 788 wrote to memory of 2032	788	06638a7f94e86279d3188c9d02d54029.exe	cmd.exe
PID 788 wrote to memory of 2032	788	06638a7f94e86279d3188c9d02d54029.exe	cmd.exe
PID 788 wrote to memory of 1736	788	06638a7f94e86279d3188c9d02d54029.exe	cmd.exe
PID 788 wrote to memory of 1736	788	06638a7f94e86279d3188c9d02d54029.exe	cmd.exe
PID 788 wrote to memory of 1736	788	06638a7f94e86279d3188c9d02d54029.exe	cmd.exe
PID 788 wrote to memory of 1736	788	06638a7f94e86279d3188c9d02d54029.exe	cmd.exe
PID 788 wrote to memory of 1288	788	06638a7f94e86279d3188c9d02d54029.exe	sc.exe
PID 788 wrote to memory of 1288	788	06638a7f94e86279d3188c9d02d54029.exe	sc.exe
PID 788 wrote to memory of 1288	788	06638a7f94e86279d3188c9d02d54029.exe	sc.exe
PID 788 wrote to memory of 1288	788	06638a7f94e86279d3188c9d02d54029.exe	sc.exe
PID 788 wrote to memory of 1740	788	06638a7f94e86279d3188c9d02d54029.exe	sc.exe
PID 788 wrote to memory of 1740	788	06638a7f94e86279d3188c9d02d54029.exe	sc.exe
PID 788 wrote to memory of 1740	788	06638a7f94e86279d3188c9d02d54029.exe	sc.exe
PID 788 wrote to memory of 1740	788	06638a7f94e86279d3188c9d02d54029.exe	sc.exe
PID 788 wrote to memory of 844	788	06638a7f94e86279d3188c9d02d54029.exe	sc.exe
PID 788 wrote to memory of 844	788	06638a7f94e86279d3188c9d02d54029.exe	sc.exe
PID 788 wrote to memory of 844	788	06638a7f94e86279d3188c9d02d54029.exe	sc.exe
PID 788 wrote to memory of 844	788	06638a7f94e86279d3188c9d02d54029.exe	sc.exe
PID 1352 wrote to memory of 632	1352	njdjprja.exe	svchost.exe
PID 1352 wrote to memory of 632	1352	njdjprja.exe	svchost.exe
PID 1352 wrote to memory of 632	1352	njdjprja.exe	svchost.exe
PID 1352 wrote to memory of 632	1352	njdjprja.exe	svchost.exe
PID 1352 wrote to memory of 632	1352	njdjprja.exe	svchost.exe
PID 1352 wrote to memory of 632	1352	njdjprja.exe	svchost.exe
PID 788 wrote to memory of 1556	788	06638a7f94e86279d3188c9d02d54029.exe	netsh.exe
PID 788 wrote to memory of 1556	788	06638a7f94e86279d3188c9d02d54029.exe	netsh.exe
PID 788 wrote to memory of 1556	788	06638a7f94e86279d3188c9d02d54029.exe	netsh.exe
PID 788 wrote to memory of 1556	788	06638a7f94e86279d3188c9d02d54029.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\06638a7f94e86279d3188c9d02d54029.exe
"C:\Users\Admin\AppData\Local\Temp\06638a7f94e86279d3188c9d02d54029.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:788

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sirwsrsl\
2⤵
PID:2032

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\njdjprja.exe" C:\Windows\SysWOW64\sirwsrsl\
2⤵
PID:1736

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create sirwsrsl binPath= "C:\Windows\SysWOW64\sirwsrsl\njdjprja.exe /d\"C:\Users\Admin\AppData\Local\Temp\06638a7f94e86279d3188c9d02d54029.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
PID:1288

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description sirwsrsl "wifi internet conection"
2⤵
PID:1740

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start sirwsrsl
2⤵
PID:844

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:1556

C:\Windows\SysWOW64\sirwsrsl\njdjprja.exe
C:\Windows\SysWOW64\sirwsrsl\njdjprja.exe /d"C:\Users\Admin\AppData\Local\Temp\06638a7f94e86279d3188c9d02d54029.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1352

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Deletes itself
PID:632

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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\njdjprja.exe
MD5
e99a2df622809367e3bee48a925ba4c8

SHA1
43b52b3bf0805af697579ba4e01e2358ec979865

SHA256
667aa46f2f208d98a4bab2f34932602140bf9e75127c367d49d6e3df45e6a9e0

SHA512
4cc2a6552e2bd320c2b437cc1477209c2a0bda605ccd982e284ea77670962c92fbf6ad0e9767ba5bc9501e40d766e831215fc6b99ec59ad79fb7ea3b564417d9

Download Submit
C:\Windows\SysWOW64\sirwsrsl\njdjprja.exe
MD5
e99a2df622809367e3bee48a925ba4c8

SHA1
43b52b3bf0805af697579ba4e01e2358ec979865

SHA256
667aa46f2f208d98a4bab2f34932602140bf9e75127c367d49d6e3df45e6a9e0

SHA512
4cc2a6552e2bd320c2b437cc1477209c2a0bda605ccd982e284ea77670962c92fbf6ad0e9767ba5bc9501e40d766e831215fc6b99ec59ad79fb7ea3b564417d9

Download Submit
memory/632-9-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/632-10-0x00000000000D9A6B-mapping.dmp

Download
memory/844-7-0x0000000000000000-mapping.dmp

Download
memory/1288-5-0x0000000000000000-mapping.dmp

Download
memory/1556-12-0x0000000000000000-mapping.dmp

Download
memory/1736-3-0x0000000000000000-mapping.dmp

Download
memory/1740-6-0x0000000000000000-mapping.dmp

Download
memory/2032-2-0x0000000000000000-mapping.dmp

Download

Analysis

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