tofsee | 5583cf616f524b652e3a55b0d5ae610b1326d04842873d5d202e762d8b541548

Analysis

max time kernel
3s
max time network
135s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
06-01-2024 10:18

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General

Target

4585fb3371e05463f51493e049181ed6.exe
Size

13.6MB
MD5

4585fb3371e05463f51493e049181ed6
SHA1

1d50b71e1238537c4deeff3825741771f2bb9165
SHA256

5583cf616f524b652e3a55b0d5ae610b1326d04842873d5d202e762d8b541548
SHA512

4ad2424a021e17bd4ac285d9e8e164d31d6604cb206cecd6d2cf5c905b3e63255fc9e182883d9d253abc428ab4ebddef25006d50a0986622dca13ef8cb0c6c1a
SSDEEP

49152:FgMttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttr:F

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
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
2744	netsh.exe

Launches sc.exe 3 IoCs

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

pid	Process
2704	sc.exe
2856	sc.exe
3056	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 4 IoCs

description	pid	Process	procid_target
PID 2100 wrote to memory of 2688	2100	4585fb3371e05463f51493e049181ed6.exe	28
PID 2100 wrote to memory of 2688	2100	4585fb3371e05463f51493e049181ed6.exe	28
PID 2100 wrote to memory of 2688	2100	4585fb3371e05463f51493e049181ed6.exe	28
PID 2100 wrote to memory of 2688	2100	4585fb3371e05463f51493e049181ed6.exe	28

C:\Users\Admin\AppData\Local\Temp\4585fb3371e05463f51493e049181ed6.exe
"C:\Users\Admin\AppData\Local\Temp\4585fb3371e05463f51493e049181ed6.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2100
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vzhisaym\
  2⤵
  PID:2688
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\embfsqzz.exe" C:\Windows\SysWOW64\vzhisaym\
  2⤵
  PID:2996
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vzhisaym binPath= "C:\Windows\SysWOW64\vzhisaym\embfsqzz.exe /d\"C:\Users\Admin\AppData\Local\Temp\4585fb3371e05463f51493e049181ed6.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2704
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vzhisaym "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2856
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vzhisaym
  2⤵
  - Launches sc.exe
  PID:3056
- 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:2744

C:\Windows\SysWOW64\vzhisaym\embfsqzz.exe
C:\Windows\SysWOW64\vzhisaym\embfsqzz.exe /d"C:\Users\Admin\AppData\Local\Temp\4585fb3371e05463f51493e049181ed6.exe"
1⤵
PID:832
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  PID:1136

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/832-15-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/832-13-0x0000000000590000-0x0000000000690000-memory.dmp

Filesize
1024KB

Download
memory/832-17-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1136-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1136-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1136-20-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1136-21-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1136-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1136-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1136-22-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2100-7-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/2100-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2100-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2100-3-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/2100-1-0x0000000000620000-0x0000000000720000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads