tofsee | 07699f780ad559ab0a8410f80033750202604736840d7880a11b37253dec5977

Analysis

max time kernel
2s
max time network
44s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
29/10/2022, 01:21

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General

Target

file.exe
Size

260KB
MD5

0977d24926bb7054965077aa47ae6eb9
SHA1

2b257a3bd6e16788458ee4223ec8d0ebc3a8eea3
SHA256

07699f780ad559ab0a8410f80033750202604736840d7880a11b37253dec5977
SHA512

3fca1acce75d60239fa0373ac5608221294571c44e10fbe7cc92b7d9e01af4cd8e1a8e94fcb654c795a6c8b64aebb85535527b8f092f922b9385ec4e6f64ad7d
SSDEEP

3072:/PiD0BaXzLdQlU/z5d3mt3pVaDhFVIVQC0ODopk3jf80Cxet1nsM/h3:g0BUzLqlFpVaDnVO0Ookz2x0ns

Score

10^/10

tofsee evasion persistence trojan

Malware Config

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

New Service
T1050

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
272	netsh.exe

Launches sc.exe 3 IoCs

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

pid	Process
1744	sc.exe
952	sc.exe
1300	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
PID:1436
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\haeojzfz\
  2⤵
  PID:1828
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zprevny.exe" C:\Windows\SysWOW64\haeojzfz\
  2⤵
  PID:2040
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create haeojzfz binPath= "C:\Windows\SysWOW64\haeojzfz\zprevny.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:1744
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description haeojzfz "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:952
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start haeojzfz
  2⤵
  - Launches sc.exe
  PID:1300
- 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:272

C:\Windows\SysWOW64\haeojzfz\zprevny.exe
C:\Windows\SysWOW64\haeojzfz\zprevny.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
PID:1396

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

New Service

T1050

Privilege Escalation

New Service

T1050

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
69KB

MD5
a89d000d67e538fc2ee167fe8272e006

SHA1
959f7dcb846c68f806637863572adbfba5098c22

SHA256
d59fdacc3a16fcc139d771e31285ff42fc994b0f9c27890c0852d7c7675c4536

SHA512
8c130ddb7dddabefea4124a4227344fd00822ad3ee8527fb276b2f4f35edc7e9e8f33284160c3297adfa37b8d3240b469aa4f48122fe14dec57e33e44bd56bd7

Download Submit
C:\Windows\SysWOW64\haeojzfz\zprevny.exe

Filesize
35KB

MD5
b0a619b6598dbc063d7a6d51e906e527

SHA1
bcc2e6e46a6c1a57aea4690a006ed29bc3e21043

SHA256
79c00bec64a32c3606bb1bc8b866437ff4104c68c9faf0cb8b655af3a9ee2d08

SHA512
0ac029d8f1d3d530b5898ef1632864ec129368a082bc95796699aa08830b066de575fe57de659097ebe67e29fec2cdceea793b7c0d642878b9baaf90a6a1ddfc

Download Submit
memory/1436-56-0x0000000002D6A000-0x0000000002D7F000-memory.dmp

Filesize
84KB

Download
memory/1436-58-0x0000000000400000-0x0000000002C2F000-memory.dmp

Filesize
40.2MB

Download
memory/1436-54-0x0000000075601000-0x0000000075603000-memory.dmp

Filesize
8KB

Download
memory/1436-57-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1436-66-0x0000000002D6A000-0x0000000002D7F000-memory.dmp

Filesize
84KB

Download