tofsee | c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc

General

Target

c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe
Size

11.0MB
MD5

ef3c5015763ab19adfb70ad34cc3aab4
SHA1

78b17d4ecf64b54f8a60bdf831204ceea591e11d
SHA256

c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc
SHA512

eb2989667b3f052805e34022b978d258a740c83985854b5af884288bb36f8cf24564d0164153f778f92877a16c1303d3c360e70dc8128679a0b0dd0ad35e0236
SSDEEP

3072:qrLSAaIXFM9X/WWIyOEfEDQMZWecFKmZv:sNWktyH9VR

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation 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
Tofsee family
tofsee
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

1104 netsh.exe

pid	process
1104	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\dkvvucu\ImagePath = "C:\\Windows\\SysWOW64\\dkvvucu\\bsloviut.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:

c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

232 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

bsloviut.exe

pid process

368 bsloviut.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

bsloviut.exe

description pid process target process

PID 368 set thread context of 232 368 bsloviut.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

3028 sc.exe
3912 sc.exe
1380 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
232	svchost.exe

pid	process
368	bsloviut.exe

description	pid	process	target process
PID 368 set thread context of 232	368	bsloviut.exe	svchost.exe

pid	process
3028	sc.exe
3912	sc.exe
1380	sc.exe

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

Processes:

netsh.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.execmd.exesvchost.exesc.exebsloviut.exenetsh.execmd.exesc.exesc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bsloviut.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exebsloviut.exe

description	pid	process	target process
PID 5012 wrote to memory of 624	5012	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	cmd.exe
PID 5012 wrote to memory of 624	5012	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	cmd.exe
PID 5012 wrote to memory of 624	5012	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	cmd.exe
PID 5012 wrote to memory of 3872	5012	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	cmd.exe
PID 5012 wrote to memory of 3872	5012	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	cmd.exe
PID 5012 wrote to memory of 3872	5012	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	cmd.exe
PID 5012 wrote to memory of 3028	5012	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	sc.exe
PID 5012 wrote to memory of 3028	5012	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	sc.exe
PID 5012 wrote to memory of 3028	5012	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	sc.exe
PID 5012 wrote to memory of 3912	5012	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	sc.exe
PID 5012 wrote to memory of 3912	5012	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	sc.exe
PID 5012 wrote to memory of 3912	5012	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	sc.exe
PID 5012 wrote to memory of 1380	5012	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	sc.exe
PID 5012 wrote to memory of 1380	5012	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	sc.exe
PID 5012 wrote to memory of 1380	5012	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	sc.exe
PID 368 wrote to memory of 232	368	bsloviut.exe	svchost.exe
PID 368 wrote to memory of 232	368	bsloviut.exe	svchost.exe
PID 368 wrote to memory of 232	368	bsloviut.exe	svchost.exe
PID 368 wrote to memory of 232	368	bsloviut.exe	svchost.exe
PID 368 wrote to memory of 232	368	bsloviut.exe	svchost.exe
PID 5012 wrote to memory of 1104	5012	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	netsh.exe
PID 5012 wrote to memory of 1104	5012	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	netsh.exe
PID 5012 wrote to memory of 1104	5012	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe
"C:\Users\Admin\AppData\Local\Temp\c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5012
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dkvvucu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:624
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bsloviut.exe" C:\Windows\SysWOW64\dkvvucu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3872
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dkvvucu binPath= "C:\Windows\SysWOW64\dkvvucu\bsloviut.exe /d\"C:\Users\Admin\AppData\Local\Temp\c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3028
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dkvvucu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3912
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dkvvucu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1380
- 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
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:1104

C:\Windows\SysWOW64\dkvvucu\bsloviut.exe
C:\Windows\SysWOW64\dkvvucu\bsloviut.exe /d"C:\Users\Admin\AppData\Local\Temp\c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:368
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:232

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
14.7MB

MD5
01a9479881ef9af26efccb7c88b0dbaa

SHA1
6020b791b3c3d87b108ee9c208928862c712b182

SHA256
91de55089cfbfac3646e8fbe1b66bbea1c76ca006d25f47ccc8d79ca71f4d675

SHA512
bbfe94934acd0ba1d1bf5108dd565335e0d3116f30373e626abada9bc014a9fdc5543b18a0d4f64e1b278e1144613d3a00cf29f61eaf82bfb1f7aaa561d7ace4

Download Submit
memory/232-12-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download
memory/232-9-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download
memory/232-17-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download
memory/232-18-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download
memory/232-19-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download
memory/368-8-0x00000000004A0000-0x00000000004A1000-memory.dmp

Filesize
4KB

Download
memory/368-7-0x0000000000E00000-0x0000000000E01000-memory.dmp

Filesize
4KB

Download
memory/368-14-0x000000005F000000-0x000000005F011000-memory.dmp

Filesize
68KB

Download
memory/368-13-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/5012-2-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/5012-1-0x00000000005B0000-0x00000000005B1000-memory.dmp

Filesize
4KB

Download
memory/5012-0-0x00000000023C0000-0x00000000023C1000-memory.dmp

Filesize
4KB

Download
memory/5012-15-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads