tofsee | 19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf

General

Target

19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe
Size

142KB
MD5

70780b64e4a6d98605af8971d4c087ea
SHA1

862b12cfea6bf1c5e636f58e8bcdaf89482c94af
SHA256

19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf
SHA512

cbdfdf35c0f31aaf4870709aa07c3c93edf8c5b504d39f44838e9ffc4d7eeee3483e9c3a6c98a92d1fcdbb3e0e585127f0635c535575faa2509f9dbd54ac3950

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

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

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

vsdpjko.exe

pid process

1480 vsdpjko.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

3644 netsh.exe

pid	process
1480	vsdpjko.exe

pid	process
3644	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\hfveucfb\ImagePath = "C:\\Windows\\SysWOW64\\hfveucfb\\vsdpjko.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

vsdpjko.exe

description pid process target process

PID 1480 set thread context of 4368 1480 vsdpjko.exe svchost.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

4376 sc.exe
4464 sc.exe
4404 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	pid	process	target process
PID 1480 set thread context of 4368	1480	vsdpjko.exe	svchost.exe

pid	process
4376	sc.exe
4464	sc.exe
4404	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exevsdpjko.exe

description	pid	process	target process
PID 1692 wrote to memory of 680	1692	19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe	cmd.exe
PID 1692 wrote to memory of 680	1692	19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe	cmd.exe
PID 1692 wrote to memory of 680	1692	19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe	cmd.exe
PID 1692 wrote to memory of 3580	1692	19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe	cmd.exe
PID 1692 wrote to memory of 3580	1692	19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe	cmd.exe
PID 1692 wrote to memory of 3580	1692	19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe	cmd.exe
PID 1692 wrote to memory of 4376	1692	19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe	sc.exe
PID 1692 wrote to memory of 4376	1692	19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe	sc.exe
PID 1692 wrote to memory of 4376	1692	19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe	sc.exe
PID 1692 wrote to memory of 4464	1692	19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe	sc.exe
PID 1692 wrote to memory of 4464	1692	19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe	sc.exe
PID 1692 wrote to memory of 4464	1692	19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe	sc.exe
PID 1692 wrote to memory of 4404	1692	19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe	sc.exe
PID 1692 wrote to memory of 4404	1692	19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe	sc.exe
PID 1692 wrote to memory of 4404	1692	19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe	sc.exe
PID 1692 wrote to memory of 3644	1692	19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe	netsh.exe
PID 1692 wrote to memory of 3644	1692	19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe	netsh.exe
PID 1692 wrote to memory of 3644	1692	19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe	netsh.exe
PID 1480 wrote to memory of 4368	1480	vsdpjko.exe	svchost.exe
PID 1480 wrote to memory of 4368	1480	vsdpjko.exe	svchost.exe
PID 1480 wrote to memory of 4368	1480	vsdpjko.exe	svchost.exe
PID 1480 wrote to memory of 4368	1480	vsdpjko.exe	svchost.exe
PID 1480 wrote to memory of 4368	1480	vsdpjko.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe
"C:\Users\Admin\AppData\Local\Temp\19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1692
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hfveucfb\
  2⤵
  PID:680
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vsdpjko.exe" C:\Windows\SysWOW64\hfveucfb\
  2⤵
  PID:3580
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hfveucfb binPath= "C:\Windows\SysWOW64\hfveucfb\vsdpjko.exe /d\"C:\Users\Admin\AppData\Local\Temp\19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:4376
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hfveucfb "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4464
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hfveucfb
  2⤵
  - Launches sc.exe
  PID:4404
- 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:3644

C:\Windows\SysWOW64\hfveucfb\vsdpjko.exe
C:\Windows\SysWOW64\hfveucfb\vsdpjko.exe /d"C:\Users\Admin\AppData\Local\Temp\19cd7ad7229f202403df4755e341f3b8856150a773217ea70fe7c8be52ad8fcf.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1480
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  PID:4368

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

New Service

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

New Service

1

T1050

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
10.5MB

MD5
1d7d230ddc3ffa0ee76c5a61032dd335

SHA1
a11c865b33ca5fa753bb3412556694a81d0343d7

SHA256
7ea4d9fdcd21a7561e650ee979a6407e1f4078faf58a1ac83d5b0b5a88826da3

SHA512
80fa23502a6d113cc432335604bb834d4de48429b66a8d374f0942a0391ac1fc9b0bd0b136f1faf1563724951ffaa95d2295f4a7870069ad74cc2fb0c10fcd0b

Download Submit
C:\Windows\SysWOW64\hfveucfb\vsdpjko.exe

Filesize
10.5MB

MD5
1d7d230ddc3ffa0ee76c5a61032dd335

SHA1
a11c865b33ca5fa753bb3412556694a81d0343d7

SHA256
7ea4d9fdcd21a7561e650ee979a6407e1f4078faf58a1ac83d5b0b5a88826da3

SHA512
80fa23502a6d113cc432335604bb834d4de48429b66a8d374f0942a0391ac1fc9b0bd0b136f1faf1563724951ffaa95d2295f4a7870069ad74cc2fb0c10fcd0b

Download Submit
memory/680-131-0x0000000000000000-mapping.dmp

Download
memory/1480-139-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1692-130-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3580-132-0x0000000000000000-mapping.dmp

Download
memory/3644-137-0x0000000000000000-mapping.dmp

Download
memory/4368-140-0x0000000000000000-mapping.dmp

Download
memory/4368-141-0x00000000005A0000-0x00000000005B5000-memory.dmp

Filesize
84KB

Download
memory/4368-143-0x00000000005A0000-0x00000000005B5000-memory.dmp

Filesize
84KB

Download
memory/4368-144-0x00000000005A0000-0x00000000005B5000-memory.dmp

Filesize
84KB

Download
memory/4368-145-0x00000000005A0000-0x00000000005B5000-memory.dmp

Filesize
84KB

Download
memory/4376-134-0x0000000000000000-mapping.dmp

Download
memory/4404-136-0x0000000000000000-mapping.dmp

Download
memory/4464-135-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads