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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\izbakuiz = "0"	svchost.exe

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

2648 netsh.exe

pid	process
2648	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\izbakuiz\ImagePath = "C:\\Windows\\SysWOW64\\izbakuiz\\ecjfenlc.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2256 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

ecjfenlc.exe

pid process

2636 ecjfenlc.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ecjfenlc.exe

description pid process target process

PID 2636 set thread context of 2256 2636 ecjfenlc.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

2792 sc.exe
3028 sc.exe
2684 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2256	svchost.exe

pid	process
2636	ecjfenlc.exe

description	pid	process	target process
PID 2636 set thread context of 2256	2636	ecjfenlc.exe	svchost.exe

pid	process
2792	sc.exe
3028	sc.exe
2684	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 queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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:

cmd.execmd.exesc.exesvchost.exec69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exesc.exesc.exeecjfenlc.exenetsh.exe

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

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exeecjfenlc.exe

description	pid	process	target process
PID 2772 wrote to memory of 2876	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	cmd.exe
PID 2772 wrote to memory of 2876	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	cmd.exe
PID 2772 wrote to memory of 2876	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	cmd.exe
PID 2772 wrote to memory of 2876	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	cmd.exe
PID 2772 wrote to memory of 2900	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	cmd.exe
PID 2772 wrote to memory of 2900	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	cmd.exe
PID 2772 wrote to memory of 2900	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	cmd.exe
PID 2772 wrote to memory of 2900	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	cmd.exe
PID 2772 wrote to memory of 2792	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	sc.exe
PID 2772 wrote to memory of 2792	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	sc.exe
PID 2772 wrote to memory of 2792	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	sc.exe
PID 2772 wrote to memory of 2792	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	sc.exe
PID 2772 wrote to memory of 3028	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	sc.exe
PID 2772 wrote to memory of 3028	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	sc.exe
PID 2772 wrote to memory of 3028	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	sc.exe
PID 2772 wrote to memory of 3028	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	sc.exe
PID 2772 wrote to memory of 2684	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	sc.exe
PID 2772 wrote to memory of 2684	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	sc.exe
PID 2772 wrote to memory of 2684	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	sc.exe
PID 2772 wrote to memory of 2684	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	sc.exe
PID 2772 wrote to memory of 2648	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	netsh.exe
PID 2772 wrote to memory of 2648	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	netsh.exe
PID 2772 wrote to memory of 2648	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	netsh.exe
PID 2772 wrote to memory of 2648	2772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	netsh.exe
PID 2636 wrote to memory of 2256	2636	ecjfenlc.exe	svchost.exe
PID 2636 wrote to memory of 2256	2636	ecjfenlc.exe	svchost.exe
PID 2636 wrote to memory of 2256	2636	ecjfenlc.exe	svchost.exe
PID 2636 wrote to memory of 2256	2636	ecjfenlc.exe	svchost.exe
PID 2636 wrote to memory of 2256	2636	ecjfenlc.exe	svchost.exe
PID 2636 wrote to memory of 2256	2636	ecjfenlc.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe
"C:\Users\Admin\AppData\Local\Temp\c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2772
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\izbakuiz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2876
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ecjfenlc.exe" C:\Windows\SysWOW64\izbakuiz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2900
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create izbakuiz binPath= "C:\Windows\SysWOW64\izbakuiz\ecjfenlc.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:2792
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description izbakuiz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3028
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start izbakuiz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2684
- 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:2648

C:\Windows\SysWOW64\izbakuiz\ecjfenlc.exe
C:\Windows\SysWOW64\izbakuiz\ecjfenlc.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:2636
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2256

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

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

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\ecjfenlc.exe

Filesize
13.7MB

MD5
f285d91e1a19826fd7cd3cf43c16af7e

SHA1
a0a4d7e6a44220f0564a4d32f2b9094637512595

SHA256
0ce37f7b4909390ed461151565495f6148daf82ef9a9673cbbcc9b4f40f22408

SHA512
7b5eb5822a30c1347e0ded92bfe0a38597b87bfe05f62d53fe6cd44c9390e6c2a69ceb10299a35905ac1f1621584e3e77af0205b3af2bb4cf86fda6d0d264518

Download Submit
memory/2256-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2256-12-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2256-9-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2256-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2256-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2636-15-0x00000000050E0000-0x00000000050F1000-memory.dmp

Filesize
68KB

Download
memory/2636-14-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2772-0-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2772-1-0x0000000001FC0000-0x0000000001FC1000-memory.dmp

Filesize
4KB

Download
memory/2772-7-0x00000000050E0000-0x00000000050F1000-memory.dmp

Filesize
68KB

Download
memory/2772-6-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2772-2-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads