tofsee | 999551ac272db875d712c2b5902badfe3bb11d60613dbab74ac9e5ea67975dc9

Analysis

max time kernel
150s
max time network
155s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
30/12/2023, 03:05

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General

Target

0c7767d4a909aa5162483997cdd2f43b.exe
Size

10.4MB
MD5

0c7767d4a909aa5162483997cdd2f43b
SHA1

2fbe8bd8270414a87f8435c170401431d76184a4
SHA256

999551ac272db875d712c2b5902badfe3bb11d60613dbab74ac9e5ea67975dc9
SHA512

4554f7d23ba8e27f80f62dc1926a573c0665648fa76d73ac869d87f6efe389d1860f5edcdd7ceaf6412d697c44cb6f688dfacfe3bc1318f057746faa1e2c5cec
SSDEEP

49152:6j5555555555555555555555555555555555555555555555555555555555555b:

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

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

Disable or Modify Tools

T1562.001

Modify Registry

T1112

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

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
1996	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\llufbgge\ImagePath = "C:\\Windows\\SysWOW64\\llufbgge\\bgttwvlq.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1932	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
664	bgttwvlq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 664 set thread context of 1932	664	bgttwvlq.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2860	sc.exe
2588	sc.exe
2696	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 30 IoCs

description	pid	Process	procid_target
PID 2200 wrote to memory of 2352	2200	0c7767d4a909aa5162483997cdd2f43b.exe	28
PID 2200 wrote to memory of 2352	2200	0c7767d4a909aa5162483997cdd2f43b.exe	28
PID 2200 wrote to memory of 2352	2200	0c7767d4a909aa5162483997cdd2f43b.exe	28
PID 2200 wrote to memory of 2352	2200	0c7767d4a909aa5162483997cdd2f43b.exe	28
PID 2200 wrote to memory of 2708	2200	0c7767d4a909aa5162483997cdd2f43b.exe	30
PID 2200 wrote to memory of 2708	2200	0c7767d4a909aa5162483997cdd2f43b.exe	30
PID 2200 wrote to memory of 2708	2200	0c7767d4a909aa5162483997cdd2f43b.exe	30
PID 2200 wrote to memory of 2708	2200	0c7767d4a909aa5162483997cdd2f43b.exe	30
PID 2200 wrote to memory of 2860	2200	0c7767d4a909aa5162483997cdd2f43b.exe	32
PID 2200 wrote to memory of 2860	2200	0c7767d4a909aa5162483997cdd2f43b.exe	32
PID 2200 wrote to memory of 2860	2200	0c7767d4a909aa5162483997cdd2f43b.exe	32
PID 2200 wrote to memory of 2860	2200	0c7767d4a909aa5162483997cdd2f43b.exe	32
PID 2200 wrote to memory of 2588	2200	0c7767d4a909aa5162483997cdd2f43b.exe	34
PID 2200 wrote to memory of 2588	2200	0c7767d4a909aa5162483997cdd2f43b.exe	34
PID 2200 wrote to memory of 2588	2200	0c7767d4a909aa5162483997cdd2f43b.exe	34
PID 2200 wrote to memory of 2588	2200	0c7767d4a909aa5162483997cdd2f43b.exe	34
PID 2200 wrote to memory of 2696	2200	0c7767d4a909aa5162483997cdd2f43b.exe	36
PID 2200 wrote to memory of 2696	2200	0c7767d4a909aa5162483997cdd2f43b.exe	36
PID 2200 wrote to memory of 2696	2200	0c7767d4a909aa5162483997cdd2f43b.exe	36
PID 2200 wrote to memory of 2696	2200	0c7767d4a909aa5162483997cdd2f43b.exe	36
PID 2200 wrote to memory of 1996	2200	0c7767d4a909aa5162483997cdd2f43b.exe	38
PID 2200 wrote to memory of 1996	2200	0c7767d4a909aa5162483997cdd2f43b.exe	38
PID 2200 wrote to memory of 1996	2200	0c7767d4a909aa5162483997cdd2f43b.exe	38
PID 2200 wrote to memory of 1996	2200	0c7767d4a909aa5162483997cdd2f43b.exe	38
PID 664 wrote to memory of 1932	664	bgttwvlq.exe	43
PID 664 wrote to memory of 1932	664	bgttwvlq.exe	43
PID 664 wrote to memory of 1932	664	bgttwvlq.exe	43
PID 664 wrote to memory of 1932	664	bgttwvlq.exe	43
PID 664 wrote to memory of 1932	664	bgttwvlq.exe	43
PID 664 wrote to memory of 1932	664	bgttwvlq.exe	43

C:\Users\Admin\AppData\Local\Temp\0c7767d4a909aa5162483997cdd2f43b.exe
"C:\Users\Admin\AppData\Local\Temp\0c7767d4a909aa5162483997cdd2f43b.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2200
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\llufbgge\
  2⤵
  PID:2352
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bgttwvlq.exe" C:\Windows\SysWOW64\llufbgge\
  2⤵
  PID:2708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create llufbgge binPath= "C:\Windows\SysWOW64\llufbgge\bgttwvlq.exe /d\"C:\Users\Admin\AppData\Local\Temp\0c7767d4a909aa5162483997cdd2f43b.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2860
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description llufbgge "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2588
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start llufbgge
  2⤵
  - Launches sc.exe
  PID:2696
- 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:1996

C:\Windows\SysWOW64\llufbgge\bgttwvlq.exe
C:\Windows\SysWOW64\llufbgge\bgttwvlq.exe /d"C:\Users\Admin\AppData\Local\Temp\0c7767d4a909aa5162483997cdd2f43b.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:664
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  PID:1932

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
6.4MB

MD5
39554c348af797b82f1831e4c11ef457

SHA1
47f8677f669116a300b929365b305d398f05b5ca

SHA256
e65a0c855a0c636080766901907c238204412effe39be641a7821fd03330f510

SHA512
50bffb2ba7101de2385230f68010edf5bfe6ac6db53dcd1519f8f260db07b4510c60bb03d9086725eda1866305252c5766ffa776899ac0fe33c54e75d95a45cd

Download Submit
C:\Windows\SysWOW64\llufbgge\bgttwvlq.exe

Filesize
9.8MB

MD5
c794b47df96ced70f8f06667584d6afb

SHA1
a8209b6fbe1fc51d7c72e07b15106fccf16c5b64

SHA256
fff18e82eeaeae481c2ca977a55e915b0620f06a544042381fbeddf44ab803d2

SHA512
7b69d42bd7cec7c6269705902b88c5981408b9f2ccef3d5b583550d47333d9c244c8741c13052ed109d3daadbac38bdb274103df8c37a0c8426cde8ff0891efe

Download Submit
memory/664-12-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/664-20-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/664-13-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1932-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1932-22-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1932-25-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1932-24-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1932-23-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1932-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1932-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2200-2-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2200-6-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2200-3-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2200-7-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/2200-1-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/2200-0-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2200-10-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads