tofsee | 74868d600acb1c900eb7643f849d64b4e029a0417d091b1833672bbc0eaf49a1

Analysis

max time kernel
147s
max time network
128s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
19/01/2024, 09:26

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

6744b518ec9ccb2012bdbf736c7e187a.exe
Size

13.2MB
MD5

6744b518ec9ccb2012bdbf736c7e187a
SHA1

2d1197901aca6e7e331319a57ac3eeaf15245731
SHA256

74868d600acb1c900eb7643f849d64b4e029a0417d091b1833672bbc0eaf49a1
SHA512

d3b84833a751b58d70d3e590df0982c5965d8cfa81bfcce9eeca47dff42355201dc30d396a7ea69ec49823ee874c29ed4bf97a069aeabfe393e45bebc2cd2f77
SSDEEP

49152:NgMtttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt1:N

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\cidgxetu = "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
2688	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\cidgxetu\ImagePath = "C:\\Windows\\SysWOW64\\cidgxetu\\vdswjhqq.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2600	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2612	vdswjhqq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2612 set thread context of 2600	2612	vdswjhqq.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2744	sc.exe
2792	sc.exe
2768	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 1652 wrote to memory of 2696	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	28
PID 1652 wrote to memory of 2696	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	28
PID 1652 wrote to memory of 2696	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	28
PID 1652 wrote to memory of 2696	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	28
PID 1652 wrote to memory of 2716	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	30
PID 1652 wrote to memory of 2716	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	30
PID 1652 wrote to memory of 2716	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	30
PID 1652 wrote to memory of 2716	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	30
PID 1652 wrote to memory of 2744	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	32
PID 1652 wrote to memory of 2744	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	32
PID 1652 wrote to memory of 2744	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	32
PID 1652 wrote to memory of 2744	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	32
PID 1652 wrote to memory of 2792	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	34
PID 1652 wrote to memory of 2792	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	34
PID 1652 wrote to memory of 2792	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	34
PID 1652 wrote to memory of 2792	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	34
PID 1652 wrote to memory of 2768	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	37
PID 1652 wrote to memory of 2768	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	37
PID 1652 wrote to memory of 2768	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	37
PID 1652 wrote to memory of 2768	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	37
PID 1652 wrote to memory of 2688	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	39
PID 1652 wrote to memory of 2688	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	39
PID 1652 wrote to memory of 2688	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	39
PID 1652 wrote to memory of 2688	1652	6744b518ec9ccb2012bdbf736c7e187a.exe	39
PID 2612 wrote to memory of 2600	2612	vdswjhqq.exe	41
PID 2612 wrote to memory of 2600	2612	vdswjhqq.exe	41
PID 2612 wrote to memory of 2600	2612	vdswjhqq.exe	41
PID 2612 wrote to memory of 2600	2612	vdswjhqq.exe	41
PID 2612 wrote to memory of 2600	2612	vdswjhqq.exe	41
PID 2612 wrote to memory of 2600	2612	vdswjhqq.exe	41

C:\Users\Admin\AppData\Local\Temp\6744b518ec9ccb2012bdbf736c7e187a.exe
"C:\Users\Admin\AppData\Local\Temp\6744b518ec9ccb2012bdbf736c7e187a.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1652
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cidgxetu\
  2⤵
  PID:2696
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vdswjhqq.exe" C:\Windows\SysWOW64\cidgxetu\
  2⤵
  PID:2716
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cidgxetu binPath= "C:\Windows\SysWOW64\cidgxetu\vdswjhqq.exe /d\"C:\Users\Admin\AppData\Local\Temp\6744b518ec9ccb2012bdbf736c7e187a.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2744
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cidgxetu "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2792
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cidgxetu
  2⤵
  - Launches sc.exe
  PID:2768
- 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:2688

C:\Windows\SysWOW64\cidgxetu\vdswjhqq.exe
C:\Windows\SysWOW64\cidgxetu\vdswjhqq.exe /d"C:\Users\Admin\AppData\Local\Temp\6744b518ec9ccb2012bdbf736c7e187a.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2612
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  PID:2600

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
2.6MB

MD5
3b8354bcd1482bcf34d2449fbea3d85b

SHA1
8cce96fdcdafc398e1e16902711283910df589af

SHA256
b40bbff690db1128ac9c5491faaf02e3d5ef5f8af17f8beea0b0f38103135976

SHA512
9fa88832b124047e2df0a31a850ed49d69e4cbd633166c7070d5680c669d3e192a07ca737153dc15058111248cb8f766908aac8b0a33d008f78c19ad492f4dc8

Download Submit
C:\Windows\SysWOW64\cidgxetu\vdswjhqq.exe

Filesize
2.9MB

MD5
7b866feb2fc88935abf29c673e9349d4

SHA1
79097ed6c17a8985f3c6e8183eb9418052d26122

SHA256
9b48f80a242f0abb9f411553ad647c78e63a31a5f5c0101990e4ba48a5392e24

SHA512
7347cfd42c256341ef5116b620b0a7d04c147a8812c25b6b30e3f8498eaa5bacb366e74dd1dedfbe6feacfd504fecbcb357fc8413b5cc82192bee4b0c521a205

Download Submit
memory/1652-1-0x00000000002B0000-0x00000000003B0000-memory.dmp

Filesize
1024KB

Download
memory/1652-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/1652-3-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1652-7-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1652-8-0x00000000002B0000-0x00000000003B0000-memory.dmp

Filesize
1024KB

Download
memory/1652-9-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2600-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2600-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2600-13-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2600-20-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2600-21-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2600-22-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2600-23-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2612-12-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/2612-11-0x00000000008B0000-0x00000000009B0000-memory.dmp

Filesize
1024KB

Download
memory/2612-17-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads