tofsee | 1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a

General

Target

1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe
Size

10.9MB
MD5

3b4ec4dce6bbf75afbcae31112bc54a1
SHA1

084e1cdc66b1eed1a8dd37391ff4c5a6239e5267
SHA256

1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a
SHA512

566d098f0bbad9eea09a06e89d97de6a0e46f101d06ddf3bf6ce5506d0dcbd1388a4e7c3ca6ca54045b83cb1a1c961a58206c2bee68d1ada9c3b71146d1f2452
SSDEEP

3072:9AS2oAKtZZy2m4zRwhIuGi9Pf2AG/7999999999999999999999999999999999T:9A7KtDyv4lwh7S

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
Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Windows Service

T1543.003

pid	Process
876	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\pmstneu\ImagePath = "C:\\Windows\\SysWOW64\\pmstneu\\pjlicyin.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1873812795-1433807462-1429862679-1000\Control Panel\International\Geo\Nation	1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe

Deletes itself 1 IoCs

pid	Process
2196	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3084	pjlicyin.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3084 set thread context of 2196	3084	pjlicyin.exe	109

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
3448	sc.exe
4188	sc.exe
4812	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1160 wrote to memory of 4964	1160	1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe	90
PID 1160 wrote to memory of 4964	1160	1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe	90
PID 1160 wrote to memory of 4964	1160	1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe	90
PID 1160 wrote to memory of 2628	1160	1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe	93
PID 1160 wrote to memory of 2628	1160	1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe	93
PID 1160 wrote to memory of 2628	1160	1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe	93
PID 1160 wrote to memory of 4188	1160	1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe	95
PID 1160 wrote to memory of 4188	1160	1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe	95
PID 1160 wrote to memory of 4188	1160	1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe	95
PID 1160 wrote to memory of 4812	1160	1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe	97
PID 1160 wrote to memory of 4812	1160	1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe	97
PID 1160 wrote to memory of 4812	1160	1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe	97
PID 1160 wrote to memory of 3448	1160	1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe	101
PID 1160 wrote to memory of 3448	1160	1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe	101
PID 1160 wrote to memory of 3448	1160	1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe	101
PID 1160 wrote to memory of 876	1160	1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe	104
PID 1160 wrote to memory of 876	1160	1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe	104
PID 1160 wrote to memory of 876	1160	1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe	104
PID 3084 wrote to memory of 2196	3084	pjlicyin.exe	109
PID 3084 wrote to memory of 2196	3084	pjlicyin.exe	109
PID 3084 wrote to memory of 2196	3084	pjlicyin.exe	109
PID 3084 wrote to memory of 2196	3084	pjlicyin.exe	109
PID 3084 wrote to memory of 2196	3084	pjlicyin.exe	109

C:\Users\Admin\AppData\Local\Temp\1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe
"C:\Users\Admin\AppData\Local\Temp\1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1160
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pmstneu\
  2⤵
  PID:4964
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pjlicyin.exe" C:\Windows\SysWOW64\pmstneu\
  2⤵
  PID:2628
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pmstneu binPath= "C:\Windows\SysWOW64\pmstneu\pjlicyin.exe /d\"C:\Users\Admin\AppData\Local\Temp\1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:4188
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pmstneu "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4812
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pmstneu
  2⤵
  - Launches sc.exe
  PID:3448
- 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:876

C:\Windows\SysWOW64\pmstneu\pjlicyin.exe
C:\Windows\SysWOW64\pmstneu\pjlicyin.exe /d"C:\Users\Admin\AppData\Local\Temp\1971f29dbe7038f50552cff2c3a56ab15f941bcd90bea3404961f109eb77360a.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3084
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:2196

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\pjlicyin.exe

Filesize
14.0MB

MD5
f4c4bc6d44aa5485f00eae44b377243a

SHA1
55acd1d6d1e0d1906b8ed1a0ce2d1cdcf681b75d

SHA256
3814cf8910fba64715838e0e5a3c53d77ffdce00debd7a301eba438406e1c246

SHA512
a61e1e052c0b520778cb94846633969b52a42c8c5ec960543ec3f4460f2d9e886f7a9877ced655c688dfbafbdc53309df1f6bbdd4c9f5f4e7c97e5a30a59b851

Download Submit
C:\Windows\SysWOW64\pmstneu\pjlicyin.exe

Filesize
14.0MB

MD5
f4c4bc6d44aa5485f00eae44b377243a

SHA1
55acd1d6d1e0d1906b8ed1a0ce2d1cdcf681b75d

SHA256
3814cf8910fba64715838e0e5a3c53d77ffdce00debd7a301eba438406e1c246

SHA512
a61e1e052c0b520778cb94846633969b52a42c8c5ec960543ec3f4460f2d9e886f7a9877ced655c688dfbafbdc53309df1f6bbdd4c9f5f4e7c97e5a30a59b851

Download Submit
memory/1160-2-0x0000000002190000-0x0000000002191000-memory.dmp

Filesize
4KB

Download
memory/1160-0-0x0000000002170000-0x0000000002171000-memory.dmp

Filesize
4KB

Download
memory/1160-5-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/1160-1-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2196-14-0x0000000000700000-0x0000000000715000-memory.dmp

Filesize
84KB

Download
memory/2196-16-0x0000000000700000-0x0000000000715000-memory.dmp

Filesize
84KB

Download
memory/2196-9-0x0000000000700000-0x0000000000715000-memory.dmp

Filesize
84KB

Download
memory/2196-15-0x0000000000700000-0x0000000000715000-memory.dmp

Filesize
84KB

Download
memory/3084-7-0x0000000000CF0000-0x0000000000CF1000-memory.dmp

Filesize
4KB

Download
memory/3084-12-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/3084-8-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads