tofsee | 2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
23-11-2024 11:54

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General

Target

2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe
Size

13.2MB
MD5

290911ada19cf5f4241acd5beadb4fa8
SHA1

0ba3021f83536da222ac06c3881e24e8ef5fc485
SHA256

2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2
SHA512

41b9faa33bddb614c547dd36b908c05cb14323b88ca26198ed8ea479f7656a89a95b8a38a9b32b24c2be8c6f9fd442f55845c52fb067fe546f7dc86c85cede2c
SSDEEP

49152:MIc6CLNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNX:1c6Cd

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\zldbqlyv = "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
2744	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\zldbqlyv\ImagePath = "C:\\Windows\\SysWOW64\\zldbqlyv\\irlqihcy.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2052	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2728	irlqihcy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2728 set thread context of 2052	2728	irlqihcy.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2304	sc.exe
3008	sc.exe
2224	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	irlqihcy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe
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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2672 wrote to memory of 1932	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	30
PID 2672 wrote to memory of 1932	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	30
PID 2672 wrote to memory of 1932	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	30
PID 2672 wrote to memory of 1932	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	30
PID 2672 wrote to memory of 2000	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	32
PID 2672 wrote to memory of 2000	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	32
PID 2672 wrote to memory of 2000	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	32
PID 2672 wrote to memory of 2000	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	32
PID 2672 wrote to memory of 2304	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	34
PID 2672 wrote to memory of 2304	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	34
PID 2672 wrote to memory of 2304	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	34
PID 2672 wrote to memory of 2304	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	34
PID 2672 wrote to memory of 3008	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	36
PID 2672 wrote to memory of 3008	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	36
PID 2672 wrote to memory of 3008	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	36
PID 2672 wrote to memory of 3008	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	36
PID 2672 wrote to memory of 2224	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	38
PID 2672 wrote to memory of 2224	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	38
PID 2672 wrote to memory of 2224	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	38
PID 2672 wrote to memory of 2224	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	38
PID 2672 wrote to memory of 2744	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	41
PID 2672 wrote to memory of 2744	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	41
PID 2672 wrote to memory of 2744	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	41
PID 2672 wrote to memory of 2744	2672	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	41
PID 2728 wrote to memory of 2052	2728	irlqihcy.exe	43
PID 2728 wrote to memory of 2052	2728	irlqihcy.exe	43
PID 2728 wrote to memory of 2052	2728	irlqihcy.exe	43
PID 2728 wrote to memory of 2052	2728	irlqihcy.exe	43
PID 2728 wrote to memory of 2052	2728	irlqihcy.exe	43
PID 2728 wrote to memory of 2052	2728	irlqihcy.exe	43

C:\Users\Admin\AppData\Local\Temp\2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe
"C:\Users\Admin\AppData\Local\Temp\2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2672
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zldbqlyv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1932
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\irlqihcy.exe" C:\Windows\SysWOW64\zldbqlyv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2000
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zldbqlyv binPath= "C:\Windows\SysWOW64\zldbqlyv\irlqihcy.exe /d\"C:\Users\Admin\AppData\Local\Temp\2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2304
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zldbqlyv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3008
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zldbqlyv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2224
- 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:2744

C:\Windows\SysWOW64\zldbqlyv\irlqihcy.exe
C:\Windows\SysWOW64\zldbqlyv\irlqihcy.exe /d"C:\Users\Admin\AppData\Local\Temp\2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2728
- 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:2052

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\irlqihcy.exe

Filesize
11.4MB

MD5
146270120c7f6c00701f0e332cc9c3cb

SHA1
8c8d3a98b68031e4046d35cb02fa29d67369621e

SHA256
161b71bb3182b8019adecd1861048e71e25959623440a3c96becb98e6cfb4692

SHA512
a5876a09b485c924b6fbc8c52d355a421ead8f315654546b3bfbd9dc8826abb38c910e20ed158ff7017e69aa08f7bc974818678bc4d9b35f3e45bfdd6f1e87e3

Download Submit
memory/2052-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2052-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2052-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2052-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2052-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2672-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2672-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2672-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2672-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2672-7-0x0000000000400000-0x0000000002BAB000-memory.dmp

Filesize
39.7MB

Download
memory/2672-1-0x0000000002CA0000-0x0000000002DA0000-memory.dmp

Filesize
1024KB

Download
memory/2728-17-0x0000000000400000-0x0000000002BAB000-memory.dmp

Filesize
39.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads