tofsee | dbf34555e73b3fc324dce63b0c7dcedfe1b2a243f122d04eaa6d67bcfef30f91

Analysis

max time kernel
150s
max time network
156s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
03-09-2024 03:30

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General

Target

e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe
Size

12.2MB
MD5

8976781b9e1d6f794b30de6a350d5d4c
SHA1

3a1c95ac27d57dbc147ffda590c9e6645a402619
SHA256

e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8
SHA512

f98d91c0b7c1f2fe4bf777a7e850453710c5dd0129daa8b5bd2e94c689cf597424b2d87201068d73534dc794ffd145540888dfa84b9ac67b9a8c354b1c0be5b8
SSDEEP

12288:MQ50bBoofipGZdIjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjH:MQTooy

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

defeatwax.ru

refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan 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\qjlkekpd = "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
2752	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\qjlkekpd\ImagePath = "C:\\Windows\\SysWOW64\\qjlkekpd\\cjmkllbp.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2536	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2692	cjmkllbp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2692 set thread context of 2536	2692	cjmkllbp.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2744	sc.exe
2908	sc.exe
3060	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	cjmkllbp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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 30 IoCs

description	pid	Process	procid_target
PID 2072 wrote to memory of 2716	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	31
PID 2072 wrote to memory of 2716	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	31
PID 2072 wrote to memory of 2716	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	31
PID 2072 wrote to memory of 2716	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	31
PID 2072 wrote to memory of 2044	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	33
PID 2072 wrote to memory of 2044	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	33
PID 2072 wrote to memory of 2044	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	33
PID 2072 wrote to memory of 2044	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	33
PID 2072 wrote to memory of 2744	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	35
PID 2072 wrote to memory of 2744	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	35
PID 2072 wrote to memory of 2744	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	35
PID 2072 wrote to memory of 2744	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	35
PID 2072 wrote to memory of 2908	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	37
PID 2072 wrote to memory of 2908	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	37
PID 2072 wrote to memory of 2908	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	37
PID 2072 wrote to memory of 2908	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	37
PID 2072 wrote to memory of 3060	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	39
PID 2072 wrote to memory of 3060	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	39
PID 2072 wrote to memory of 3060	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	39
PID 2072 wrote to memory of 3060	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	39
PID 2072 wrote to memory of 2752	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	42
PID 2072 wrote to memory of 2752	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	42
PID 2072 wrote to memory of 2752	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	42
PID 2072 wrote to memory of 2752	2072	e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe	42
PID 2692 wrote to memory of 2536	2692	cjmkllbp.exe	44
PID 2692 wrote to memory of 2536	2692	cjmkllbp.exe	44
PID 2692 wrote to memory of 2536	2692	cjmkllbp.exe	44
PID 2692 wrote to memory of 2536	2692	cjmkllbp.exe	44
PID 2692 wrote to memory of 2536	2692	cjmkllbp.exe	44
PID 2692 wrote to memory of 2536	2692	cjmkllbp.exe	44

C:\Users\Admin\AppData\Local\Temp\e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe
"C:\Users\Admin\AppData\Local\Temp\e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2072
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qjlkekpd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2716
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cjmkllbp.exe" C:\Windows\SysWOW64\qjlkekpd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2044
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qjlkekpd binPath= "C:\Windows\SysWOW64\qjlkekpd\cjmkllbp.exe /d\"C:\Users\Admin\AppData\Local\Temp\e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2744
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qjlkekpd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2908
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qjlkekpd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3060
- 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:2752

C:\Windows\SysWOW64\qjlkekpd\cjmkllbp.exe
C:\Windows\SysWOW64\qjlkekpd\cjmkllbp.exe /d"C:\Users\Admin\AppData\Local\Temp\e3dd0a078e3b5f532c6b5b3254eea71e4afac1eda00d349d6fc5582d2c3487e8.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2692
- 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:2536

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\cjmkllbp.exe

Filesize
14.0MB

MD5
2bb085ddbc3e114dd1450416e7897752

SHA1
741b4709d79f581a8843b3632e09e2004eb9aee2

SHA256
db85dfe2a5149bf6a21b65b639e412f53bdb830332bf1a5bd2c780dda54b5e6f

SHA512
51428c213f38899af786ba50f25bed3beb2b444e64f0f5df06cca5eea67f9658f102cd2b3c0bbdb04b2bc7baca9ad93ef0f985336fdc7f399da553a836cf452a

Download Submit
memory/2072-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2072-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2072-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2072-8-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/2072-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2072-1-0x00000000009D0000-0x0000000000AD0000-memory.dmp

Filesize
1024KB

Download
memory/2536-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2536-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2536-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2536-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2536-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2692-17-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download

Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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