tofsee | 4f743258a31bb67f3b4a52a2ce3b63cbdb9f1e4c2727a42787f3d0d13f803d60

General

Target

12ea2803817cfe70a85e0766b35de554.exe
Size

14.8MB
MD5

12ea2803817cfe70a85e0766b35de554
SHA1

df4fbcfa11b195bd8836c8ad7ec86c7ab9e0299f
SHA256

4f743258a31bb67f3b4a52a2ce3b63cbdb9f1e4c2727a42787f3d0d13f803d60
SHA512

9dde9a20f5c14503d678044f6e7070878218e26f9f7dbd70b042d7cf4696497501e8e3c8e3eca99084afce80c85aaf64f2ce83adf8c305c9c56c491fe411f059
SSDEEP

49152:Kgnttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttn:K

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
4880	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\qsoxocal\ImagePath = "C:\\Windows\\SysWOW64\\qsoxocal\\mujnayhh.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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	12ea2803817cfe70a85e0766b35de554.exe

Deletes itself 1 IoCs

pid	Process
1096	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3592	mujnayhh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3592 set thread context of 1096	3592	mujnayhh.exe	104

Launches sc.exe 3 IoCs

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

pid	Process
2036	sc.exe
552	sc.exe
1504	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 1012 wrote to memory of 3956	1012	12ea2803817cfe70a85e0766b35de554.exe	92
PID 1012 wrote to memory of 3956	1012	12ea2803817cfe70a85e0766b35de554.exe	92
PID 1012 wrote to memory of 3956	1012	12ea2803817cfe70a85e0766b35de554.exe	92
PID 1012 wrote to memory of 5076	1012	12ea2803817cfe70a85e0766b35de554.exe	94
PID 1012 wrote to memory of 5076	1012	12ea2803817cfe70a85e0766b35de554.exe	94
PID 1012 wrote to memory of 5076	1012	12ea2803817cfe70a85e0766b35de554.exe	94
PID 1012 wrote to memory of 2036	1012	12ea2803817cfe70a85e0766b35de554.exe	96
PID 1012 wrote to memory of 2036	1012	12ea2803817cfe70a85e0766b35de554.exe	96
PID 1012 wrote to memory of 2036	1012	12ea2803817cfe70a85e0766b35de554.exe	96
PID 1012 wrote to memory of 552	1012	12ea2803817cfe70a85e0766b35de554.exe	98
PID 1012 wrote to memory of 552	1012	12ea2803817cfe70a85e0766b35de554.exe	98
PID 1012 wrote to memory of 552	1012	12ea2803817cfe70a85e0766b35de554.exe	98
PID 1012 wrote to memory of 1504	1012	12ea2803817cfe70a85e0766b35de554.exe	99
PID 1012 wrote to memory of 1504	1012	12ea2803817cfe70a85e0766b35de554.exe	99
PID 1012 wrote to memory of 1504	1012	12ea2803817cfe70a85e0766b35de554.exe	99
PID 1012 wrote to memory of 4880	1012	12ea2803817cfe70a85e0766b35de554.exe	102
PID 1012 wrote to memory of 4880	1012	12ea2803817cfe70a85e0766b35de554.exe	102
PID 1012 wrote to memory of 4880	1012	12ea2803817cfe70a85e0766b35de554.exe	102
PID 3592 wrote to memory of 1096	3592	mujnayhh.exe	104
PID 3592 wrote to memory of 1096	3592	mujnayhh.exe	104
PID 3592 wrote to memory of 1096	3592	mujnayhh.exe	104
PID 3592 wrote to memory of 1096	3592	mujnayhh.exe	104
PID 3592 wrote to memory of 1096	3592	mujnayhh.exe	104

C:\Users\Admin\AppData\Local\Temp\12ea2803817cfe70a85e0766b35de554.exe
"C:\Users\Admin\AppData\Local\Temp\12ea2803817cfe70a85e0766b35de554.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1012
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qsoxocal\
  2⤵
  PID:3956
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mujnayhh.exe" C:\Windows\SysWOW64\qsoxocal\
  2⤵
  PID:5076
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qsoxocal binPath= "C:\Windows\SysWOW64\qsoxocal\mujnayhh.exe /d\"C:\Users\Admin\AppData\Local\Temp\12ea2803817cfe70a85e0766b35de554.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2036
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qsoxocal "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:552
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qsoxocal
  2⤵
  - Launches sc.exe
  PID:1504
- 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:4880

C:\Windows\SysWOW64\qsoxocal\mujnayhh.exe
C:\Windows\SysWOW64\qsoxocal\mujnayhh.exe /d"C:\Users\Admin\AppData\Local\Temp\12ea2803817cfe70a85e0766b35de554.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3592
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:1096

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\mujnayhh.exe

Filesize
522KB

MD5
7758d78038b12ed3bf8edb6fe070ada1

SHA1
27e0cfb2bf8ee063c7934c2b847d08e405a5a844

SHA256
6075924046fdbb645c7870261e26bde4348c4e249c247c3143b49d00353dd9f0

SHA512
f5011f3acd5450aaf0d6bddd908da571e4da7e09d984e8278c4125020912abd84acb8bd096ce328a1dc1c71375cc34921902e3d4bb6d910b01795d7fbf743153

Download Submit
C:\Windows\SysWOW64\qsoxocal\mujnayhh.exe

Filesize
166KB

MD5
d3e7febc3f950cea5f17506770d7f641

SHA1
8c8c54bcff865216be8df128d54c6148b40789a5

SHA256
27779d7bfb496c9986344ad103003589e9daa2ce325ed84491f9ae735c8c1f47

SHA512
2fe6b60d732091817cc9b548e91a17a1b634ab9c35d4a0e2817fb1d66b35cfc5e758b4f82bffb25b6d853343c337ab83a0870afbce8d7c723b4538c96ae1c129

Download Submit
memory/1012-8-0x0000000000700000-0x0000000000713000-memory.dmp

Filesize
76KB

Download
memory/1012-1-0x0000000000780000-0x0000000000880000-memory.dmp

Filesize
1024KB

Download
memory/1012-3-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/1012-7-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/1012-2-0x0000000000700000-0x0000000000713000-memory.dmp

Filesize
76KB

Download
memory/1096-12-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/1096-17-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/1096-18-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/1096-16-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/1096-19-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/3592-13-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/3592-11-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/3592-10-0x00000000004F0000-0x00000000005F0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads