tofsee | c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc

Analysis

max time kernel
149s
max time network
122s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 10:07

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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

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

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\zrrreres = "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

pid	Process
2420	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\zrrreres\ImagePath = "C:\\Windows\\SysWOW64\\zrrreres\\irjirdhy.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2968	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2828	irjirdhy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2828 set thread context of 2968	2828	irjirdhy.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2360	sc.exe
1792	sc.exe
2520	sc.exe

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

System Information Discovery
T1082

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

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

description	ioc	Process
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	netsh.exe
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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	irjirdhy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 772 wrote to memory of 2484	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	30
PID 772 wrote to memory of 2484	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	30
PID 772 wrote to memory of 2484	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	30
PID 772 wrote to memory of 2484	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	30
PID 772 wrote to memory of 2244	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	32
PID 772 wrote to memory of 2244	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	32
PID 772 wrote to memory of 2244	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	32
PID 772 wrote to memory of 2244	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	32
PID 772 wrote to memory of 1792	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	34
PID 772 wrote to memory of 1792	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	34
PID 772 wrote to memory of 1792	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	34
PID 772 wrote to memory of 1792	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	34
PID 772 wrote to memory of 2520	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	36
PID 772 wrote to memory of 2520	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	36
PID 772 wrote to memory of 2520	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	36
PID 772 wrote to memory of 2520	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	36
PID 772 wrote to memory of 2360	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	38
PID 772 wrote to memory of 2360	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	38
PID 772 wrote to memory of 2360	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	38
PID 772 wrote to memory of 2360	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	38
PID 2828 wrote to memory of 2968	2828	irjirdhy.exe	41
PID 2828 wrote to memory of 2968	2828	irjirdhy.exe	41
PID 2828 wrote to memory of 2968	2828	irjirdhy.exe	41
PID 2828 wrote to memory of 2968	2828	irjirdhy.exe	41
PID 2828 wrote to memory of 2968	2828	irjirdhy.exe	41
PID 2828 wrote to memory of 2968	2828	irjirdhy.exe	41
PID 772 wrote to memory of 2420	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	42
PID 772 wrote to memory of 2420	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	42
PID 772 wrote to memory of 2420	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	42
PID 772 wrote to memory of 2420	772	c69e4ce48dbf378920c3a0cc37ebf881307640e541e5b9d502e67ecd14ebf7fc.exe	42

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:772
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zrrreres\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2484
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\irjirdhy.exe" C:\Windows\SysWOW64\zrrreres\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2244
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zrrreres binPath= "C:\Windows\SysWOW64\zrrreres\irjirdhy.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:1792
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zrrreres "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2520
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zrrreres
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2360
- 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:2420

C:\Windows\SysWOW64\zrrreres\irjirdhy.exe
C:\Windows\SysWOW64\zrrreres\irjirdhy.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:2828
- 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:2968

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
10.5MB

MD5
dec213858f1d44c1c97bca84a8082ce7

SHA1
ebe6112537b4d3d882d681b490b7d9449bc02046

SHA256
354ebc70c6c85b8963efa14dcd4d8b6a5ad6b648c0ebb0a079dba9f2f277aa7e

SHA512
03827e4470437f0d3bf27e1df97fdbcc6a60fed7e62e383520bf0a7fe1c6739ba7d69f487e85bfda1cbf3145a381521092b586b8e38ab95cd460964af6ca132e

Download Submit
memory/772-14-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/772-1-0x0000000001F60000-0x0000000001F61000-memory.dmp

Filesize
4KB

Download
memory/772-2-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/772-0-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/772-15-0x00000000050E0000-0x00000000050F1000-memory.dmp

Filesize
68KB

Download
memory/2828-12-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2828-13-0x00000000050E0000-0x00000000050F1000-memory.dmp

Filesize
68KB

Download
memory/2968-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2968-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2968-7-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2968-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2968-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads