tofsee | 033b137b0cb9a9c688701f67b5b212b773cdcf711241ea24f8f8c4dc9fcf6f3c

General

Target

9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe
Size

299KB
MD5

54b34c36efd4417cbcc35e2ac2c3e67c
SHA1

1e8515d94951bdf686fc5e2ab33885fb99efbaeb
SHA256

9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70
SHA512

af0134597248b30fd78b3cc7d73760a9aea62d27edcb5be7874373fe8dc04b3e0c6327443fda38ac32a8ba74119cfd7b02b2b711ce3280abbe1335cb6fee62b4
SSDEEP

3072:9LJYk6t5eTZuuC3rYFwHV6nRKgB2k3zjdCZr6TN8TiuFxAXc5OUZdu8HVZO7:9LKlsTa3rYfB24Mr2s4jUTu8HVc7

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

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 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

1664 netsh.exe
Executes dropped EXE 1 IoCs

Processes:

lxnaonfj.exe

pid process

284 lxnaonfj.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

476 sc.exe
1204 sc.exe
2096 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1664	netsh.exe

pid	process
284	lxnaonfj.exe

pid	process
476	sc.exe
1204	sc.exe
2096	sc.exe

Suspicious use of WriteProcessMemory 28 IoCs

Processes:

9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exelxnaonfj.exe

description	pid	process	target process
PID 2396 wrote to memory of 2696	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	cmd.exe
PID 2396 wrote to memory of 2696	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	cmd.exe
PID 2396 wrote to memory of 2696	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	cmd.exe
PID 2396 wrote to memory of 2696	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	cmd.exe
PID 2396 wrote to memory of 2016	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	cmd.exe
PID 2396 wrote to memory of 2016	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	cmd.exe
PID 2396 wrote to memory of 2016	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	cmd.exe
PID 2396 wrote to memory of 2016	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	cmd.exe
PID 2396 wrote to memory of 2096	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	sc.exe
PID 2396 wrote to memory of 2096	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	sc.exe
PID 2396 wrote to memory of 2096	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	sc.exe
PID 2396 wrote to memory of 2096	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	sc.exe
PID 2396 wrote to memory of 476	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	sc.exe
PID 2396 wrote to memory of 476	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	sc.exe
PID 2396 wrote to memory of 476	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	sc.exe
PID 2396 wrote to memory of 476	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	sc.exe
PID 2396 wrote to memory of 1204	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	sc.exe
PID 2396 wrote to memory of 1204	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	sc.exe
PID 2396 wrote to memory of 1204	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	sc.exe
PID 2396 wrote to memory of 1204	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	sc.exe
PID 2396 wrote to memory of 1664	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	netsh.exe
PID 2396 wrote to memory of 1664	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	netsh.exe
PID 2396 wrote to memory of 1664	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	netsh.exe
PID 2396 wrote to memory of 1664	2396	9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe	netsh.exe
PID 284 wrote to memory of 2072	284	lxnaonfj.exe	svchost.exe
PID 284 wrote to memory of 2072	284	lxnaonfj.exe	svchost.exe
PID 284 wrote to memory of 2072	284	lxnaonfj.exe	svchost.exe
PID 284 wrote to memory of 2072	284	lxnaonfj.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe
"C:\Users\Admin\AppData\Local\Temp\9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2396

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\okhogawd\
2⤵
PID:2696

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lxnaonfj.exe" C:\Windows\SysWOW64\okhogawd\
2⤵
PID:2016

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create okhogawd binPath= "C:\Windows\SysWOW64\okhogawd\lxnaonfj.exe /d\"C:\Users\Admin\AppData\Local\Temp\9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2096

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description okhogawd "wifi internet conection"
2⤵
- Launches sc.exe
PID:476

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start okhogawd
2⤵
- Launches sc.exe
PID:1204

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:1664

C:\Windows\SysWOW64\okhogawd\lxnaonfj.exe
C:\Windows\SysWOW64\okhogawd\lxnaonfj.exe /d"C:\Users\Admin\AppData\Local\Temp\9f88f8dba6df3a1116c8444e9b03812fcadf4d8bf9f67d6cfcfb42eaae819e70.exe"
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:284

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
PID:2072

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Privilege Escalation

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

1

T1562.004

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\lxnaonfj.exe
Filesize
12.2MB

MD5
e9cd848bd1a8876f948b910b2faca450

SHA1
284d2fe5d75fb3428412d4d1202de77b4e6a5540

SHA256
03c7dfb595ab86cd396bf4e305ab56376f9f74ce974a3622d684e57428871df8

SHA512
c66e421934ef413e75a14ccb0c30f52a32eff5f7a491b0821603f83f438b87da41d161a428b47d39a4fa0596faf78ad1b8c42fd6d409570ebbe0975922d3a86b

Download Submit
memory/284-19-0x00000000002F0000-0x00000000003F0000-memory.dmp

Filesize
1024KB

Download
memory/284-25-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/284-20-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/2072-28-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2072-29-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2072-24-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2072-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2072-21-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2396-7-0x00000000008F0000-0x00000000009F0000-memory.dmp

Filesize
1024KB

Download
memory/2396-16-0x00000000008F0000-0x00000000009F0000-memory.dmp

Filesize
1024KB

Download
memory/2396-15-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/2396-8-0x00000000002B0000-0x00000000002C3000-memory.dmp

Filesize
76KB

Download
memory/2396-1-0x00000000008F0000-0x00000000009F0000-memory.dmp

Filesize
1024KB

Download
memory/2396-5-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/2396-4-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/2396-2-0x00000000002B0000-0x00000000002C3000-memory.dmp

Filesize
76KB

Download

Analysis

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