tofsee | 59b5b9da2fdcee0b843246228a6eace2de8e5f20a82e2ed7df64e78f657f8772

Analysis

max time kernel
149s
max time network
156s
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

0c7824fd2d1717ce83f2c7a6522047c4.exe
Size

12.7MB
MD5

0c7824fd2d1717ce83f2c7a6522047c4
SHA1

4849c18f94170bd876a2b0653763c04ebe61cfc4
SHA256

59b5b9da2fdcee0b843246228a6eace2de8e5f20a82e2ed7df64e78f657f8772
SHA512

eae3dd61afae33e900953fb0bf4f1e994c4df8bf2c3d7ed3581a8e06801857373bc2cad25a518825c62b829eb61cc286169bf3cefc43f9b818ab937b24e7cf94
SSDEEP

24576:FjDuKnh7YzbKBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB5:Fnh

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

defeatwax.ru

refabyd.info

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\jjlfqbwa = "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
2764	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\jjlfqbwa\ImagePath = "C:\\Windows\\SysWOW64\\jjlfqbwa\\veqwgbxn.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2064	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2748	veqwgbxn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2748 set thread context of 2064	2748	veqwgbxn.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2900	sc.exe
2892	sc.exe
2800	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 2172 wrote to memory of 2876	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	28
PID 2172 wrote to memory of 2876	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	28
PID 2172 wrote to memory of 2876	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	28
PID 2172 wrote to memory of 2876	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	28
PID 2172 wrote to memory of 1976	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	30
PID 2172 wrote to memory of 1976	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	30
PID 2172 wrote to memory of 1976	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	30
PID 2172 wrote to memory of 1976	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	30
PID 2172 wrote to memory of 2900	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	32
PID 2172 wrote to memory of 2900	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	32
PID 2172 wrote to memory of 2900	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	32
PID 2172 wrote to memory of 2900	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	32
PID 2172 wrote to memory of 2892	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	34
PID 2172 wrote to memory of 2892	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	34
PID 2172 wrote to memory of 2892	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	34
PID 2172 wrote to memory of 2892	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	34
PID 2172 wrote to memory of 2800	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	36
PID 2172 wrote to memory of 2800	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	36
PID 2172 wrote to memory of 2800	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	36
PID 2172 wrote to memory of 2800	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	36
PID 2172 wrote to memory of 2764	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	38
PID 2172 wrote to memory of 2764	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	38
PID 2172 wrote to memory of 2764	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	38
PID 2172 wrote to memory of 2764	2172	0c7824fd2d1717ce83f2c7a6522047c4.exe	38
PID 2748 wrote to memory of 2064	2748	veqwgbxn.exe	41
PID 2748 wrote to memory of 2064	2748	veqwgbxn.exe	41
PID 2748 wrote to memory of 2064	2748	veqwgbxn.exe	41
PID 2748 wrote to memory of 2064	2748	veqwgbxn.exe	41
PID 2748 wrote to memory of 2064	2748	veqwgbxn.exe	41
PID 2748 wrote to memory of 2064	2748	veqwgbxn.exe	41

C:\Users\Admin\AppData\Local\Temp\0c7824fd2d1717ce83f2c7a6522047c4.exe
"C:\Users\Admin\AppData\Local\Temp\0c7824fd2d1717ce83f2c7a6522047c4.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jjlfqbwa\
  2⤵
  PID:2876
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\veqwgbxn.exe" C:\Windows\SysWOW64\jjlfqbwa\
  2⤵
  PID:1976
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jjlfqbwa binPath= "C:\Windows\SysWOW64\jjlfqbwa\veqwgbxn.exe /d\"C:\Users\Admin\AppData\Local\Temp\0c7824fd2d1717ce83f2c7a6522047c4.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2900
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jjlfqbwa "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2892
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jjlfqbwa
  2⤵
  - Launches sc.exe
  PID:2800
- 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:2764

C:\Windows\SysWOW64\jjlfqbwa\veqwgbxn.exe
C:\Windows\SysWOW64\jjlfqbwa\veqwgbxn.exe /d"C:\Users\Admin\AppData\Local\Temp\0c7824fd2d1717ce83f2c7a6522047c4.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2748
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  PID:2064

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\veqwgbxn.exe

Filesize
7.1MB

MD5
383242f7506ff5be272b3c217f81b13c

SHA1
268bc1b5127682e81a87ea3fe3c6ffaa8f7799f9

SHA256
cd5b62034596bedf08475847d662fbdc46d59c1df5f564ede13590c88e2dbe82

SHA512
ea425aa686a5377f6a8402192f38943c480ec9a284da67cd1ddd55e894a5b3f2753fa51755762918f05d1263b83b23a355591bd81aaf1293996755473755a4c4

Download Submit
C:\Windows\SysWOW64\jjlfqbwa\veqwgbxn.exe

Filesize
14.7MB

MD5
dca37dde16242e40c49469b7222da0b0

SHA1
c1d7d634ab96161b756f402ece783fc3ebe035d6

SHA256
d7018631278ec4d8f52ec11bee997ebfe2e1427c06942d53e328ba776fda024f

SHA512
19f6b571ffa6ee3db371d432cca65560072c9713cfb0507b6801e3b4c46b74ce0ecc9d87c219f75873348506961c8bfc96a18fb07b788fc09862751dec7a487e

Download Submit
memory/2064-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2064-22-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2064-21-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2064-20-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2064-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2064-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2172-6-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2172-7-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2172-1-0x0000000000630000-0x0000000000730000-memory.dmp

Filesize
1024KB

Download
memory/2172-3-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2172-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2748-11-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2748-10-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download
memory/2748-16-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads