tofsee | bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a

Analysis

max time kernel
118s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
23-11-2024 22:07

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General

Target

bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe
Size

11.9MB
MD5

94ddf26483c2d2314510988223e8a8f3
SHA1

e1307d39c80be583ff7fbefd99bbc6c6f41ef44a
SHA256

bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a
SHA512

3167dee1764a4840b70fa30d51fdc4283cfe5c7c1a84c5560e2b0e59f2b349791b681369e9047733a51a76cd2e1a28a01c540e2c71ea54279b2f6bb9950473c7
SSDEEP

49152:tkHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHV:K

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

quadoil.ru

lakeflex.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\eajiqnjx = "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
2804	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\eajiqnjx\ImagePath = "C:\\Windows\\SysWOW64\\eajiqnjx\\jpknwffa.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid	Process
2436	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

jpknwffa.exe

pid	Process
2840	jpknwffa.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

jpknwffa.exe

description	pid	Process	procid_target
PID 2840 set thread context of 2436	2840	jpknwffa.exe	43

Launches sc.exe 3 IoCs

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

Processes:

sc.exesc.exesc.exe

pid	Process
2932	sc.exe
2704	sc.exe
2756	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

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:

cmd.exesc.exenetsh.exesvchost.exebf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exesc.exesc.exejpknwffa.execmd.exe

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.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	jpknwffa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exejpknwffa.exe

description	pid	Process	procid_target
PID 3004 wrote to memory of 2508	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	30
PID 3004 wrote to memory of 2508	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	30
PID 3004 wrote to memory of 2508	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	30
PID 3004 wrote to memory of 2508	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	30
PID 3004 wrote to memory of 1712	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	32
PID 3004 wrote to memory of 1712	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	32
PID 3004 wrote to memory of 1712	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	32
PID 3004 wrote to memory of 1712	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	32
PID 3004 wrote to memory of 2932	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	34
PID 3004 wrote to memory of 2932	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	34
PID 3004 wrote to memory of 2932	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	34
PID 3004 wrote to memory of 2932	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	34
PID 3004 wrote to memory of 2704	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	36
PID 3004 wrote to memory of 2704	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	36
PID 3004 wrote to memory of 2704	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	36
PID 3004 wrote to memory of 2704	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	36
PID 3004 wrote to memory of 2756	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	38
PID 3004 wrote to memory of 2756	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	38
PID 3004 wrote to memory of 2756	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	38
PID 3004 wrote to memory of 2756	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	38
PID 3004 wrote to memory of 2804	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	41
PID 3004 wrote to memory of 2804	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	41
PID 3004 wrote to memory of 2804	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	41
PID 3004 wrote to memory of 2804	3004	bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe	41
PID 2840 wrote to memory of 2436	2840	jpknwffa.exe	43
PID 2840 wrote to memory of 2436	2840	jpknwffa.exe	43
PID 2840 wrote to memory of 2436	2840	jpknwffa.exe	43
PID 2840 wrote to memory of 2436	2840	jpknwffa.exe	43
PID 2840 wrote to memory of 2436	2840	jpknwffa.exe	43
PID 2840 wrote to memory of 2436	2840	jpknwffa.exe	43

C:\Users\Admin\AppData\Local\Temp\bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe
"C:\Users\Admin\AppData\Local\Temp\bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3004
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\eajiqnjx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2508
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jpknwffa.exe" C:\Windows\SysWOW64\eajiqnjx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1712
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create eajiqnjx binPath= "C:\Windows\SysWOW64\eajiqnjx\jpknwffa.exe /d\"C:\Users\Admin\AppData\Local\Temp\bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2932
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description eajiqnjx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2704
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start eajiqnjx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2756
- 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:2804

C:\Windows\SysWOW64\eajiqnjx\jpknwffa.exe
C:\Windows\SysWOW64\eajiqnjx\jpknwffa.exe /d"C:\Users\Admin\AppData\Local\Temp\bf287ab183c3ca2038a1a683c75aa0942a0dfdd760e184b25d506d7d48614d7a.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2840
- 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:2436

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\jpknwffa.exe

Filesize
11.5MB

MD5
b44a3920729601ec0f77816cf7a82a59

SHA1
e72af38f7b6f03d9aae89e5f6be27f3fb48d9b7e

SHA256
402a3777f66fdbaeb66e90ed00599e675cafc44c2c078d58fee1f8fcbecc5d18

SHA512
86de0528f5cef140f79e4098739b3d5aae084878db66d39e83100fbcafbf2b9f681f7c9221dcc06152d7db9e00b69daaf5480bd34b85769d14430d6588539a09

Download Submit
memory/2436-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2436-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2436-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2436-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2436-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2840-17-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3004-1-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/3004-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3004-4-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3004-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3004-9-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download