tofsee | b3849e6d7b97c3d7e4f1668975783d4432a38b6d4f0c5970d9206871de2caa82

Analysis

max time kernel
34s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
28/12/2023, 22:50

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

fdf2c167e3038cd40538ca5a83bddd48.exe
Size

14.1MB
MD5

fdf2c167e3038cd40538ca5a83bddd48
SHA1

ac0c3a598aa28568a5d28d1fc262207f0345c5bc
SHA256

b3849e6d7b97c3d7e4f1668975783d4432a38b6d4f0c5970d9206871de2caa82
SHA512

7cc57649f935d385403e1202c6774b6eda4f79f80aa07cfdd49924368a201d5f0ad3680f0086a912495b7b0db3afea2240d75a1569af99ff8676cdc4c6fb24cb
SSDEEP

6144:Li0TTXfKNnKjmm+AJl6MBK0/etgnc0ArFuyXgWNInP:lKNKjmm+AJlznetgABufeI

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

43.231.4.6

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
2592	netsh.exe

Launches sc.exe 3 IoCs

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

pid	Process
2616	sc.exe
2508	sc.exe
1888	sc.exe

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2304	452	WerFault.exe	87
2136	2060	WerFault.exe	108

C:\Users\Admin\AppData\Local\Temp\fdf2c167e3038cd40538ca5a83bddd48.exe
"C:\Users\Admin\AppData\Local\Temp\fdf2c167e3038cd40538ca5a83bddd48.exe"
1⤵
PID:452
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\udjimglr\
  2⤵
  PID:5032
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oprsmpkc.exe" C:\Windows\SysWOW64\udjimglr\
  2⤵
  PID:4580
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create udjimglr binPath= "C:\Windows\SysWOW64\udjimglr\oprsmpkc.exe /d\"C:\Users\Admin\AppData\Local\Temp\fdf2c167e3038cd40538ca5a83bddd48.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2616
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description udjimglr "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2508
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start udjimglr
  2⤵
  - Launches sc.exe
  PID:1888
- 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:2592
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 452 -s 888
  2⤵
  - Program crash
  PID:2304

C:\Windows\SysWOW64\udjimglr\oprsmpkc.exe
C:\Windows\SysWOW64\udjimglr\oprsmpkc.exe /d"C:\Users\Admin\AppData\Local\Temp\fdf2c167e3038cd40538ca5a83bddd48.exe"
1⤵
PID:2060
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  PID:2700
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2060 -s 536
  2⤵
  - Program crash
  PID:2136

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 452 -ip 452
1⤵
PID:4456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2060 -ip 2060
1⤵
PID:1108

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

Loading Replay Monitor...

Downloads

memory/452-10-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/452-11-0x00000000024F0000-0x0000000002503000-memory.dmp

Filesize
76KB

Download
memory/452-3-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/452-5-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/452-7-0x00000000008F0000-0x00000000009F0000-memory.dmp

Filesize
1024KB

Download
memory/452-6-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/452-2-0x00000000024F0000-0x0000000002503000-memory.dmp

Filesize
76KB

Download
memory/452-1-0x00000000008F0000-0x00000000009F0000-memory.dmp

Filesize
1024KB

Download
memory/2060-20-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/2060-16-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/2060-13-0x0000000000A40000-0x0000000000B40000-memory.dmp

Filesize
1024KB

Download
memory/2700-14-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2700-21-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2700-19-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2700-22-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads