tofsee | bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794

General

Target

bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe
Size

10.0MB
MD5

e73ea7459977529317345e65c0f15267
SHA1

345f6930733b34578650cb65168ee93aa45457eb
SHA256

bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794
SHA512

1e89c8bac3fbfe785d271ba48680b50c259438b7816429b6dfa5d976fc46276a4749c837576667fac90249e50182691d52cee0d11b6d8ef1db97dedcf16113f0
SSDEEP

49152:bkHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHP:I

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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\fpximbbd = "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

2824 netsh.exe

pid	process
2824	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\fpximbbd\ImagePath = "C:\\Windows\\SysWOW64\\fpximbbd\\gicrnjfw.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

3000 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

gicrnjfw.exe

pid process

2904 gicrnjfw.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

gicrnjfw.exe

description pid process target process

PID 2904 set thread context of 3000 2904 gicrnjfw.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

2140 sc.exe
2532 sc.exe
2888 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3000	svchost.exe

pid	process
2904	gicrnjfw.exe

description	pid	process	target process
PID 2904 set thread context of 3000	2904	gicrnjfw.exe	svchost.exe

pid	process
2140	sc.exe
2532	sc.exe
2888	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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:

bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.execmd.exesc.exenetsh.exesvchost.execmd.exesc.exesc.exegicrnjfw.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	gicrnjfw.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exegicrnjfw.exe

description	pid	process	target process
PID 2188 wrote to memory of 2616	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	cmd.exe
PID 2188 wrote to memory of 2616	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	cmd.exe
PID 2188 wrote to memory of 2616	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	cmd.exe
PID 2188 wrote to memory of 2616	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	cmd.exe
PID 2188 wrote to memory of 2304	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	cmd.exe
PID 2188 wrote to memory of 2304	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	cmd.exe
PID 2188 wrote to memory of 2304	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	cmd.exe
PID 2188 wrote to memory of 2304	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	cmd.exe
PID 2188 wrote to memory of 2140	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	sc.exe
PID 2188 wrote to memory of 2140	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	sc.exe
PID 2188 wrote to memory of 2140	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	sc.exe
PID 2188 wrote to memory of 2140	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	sc.exe
PID 2188 wrote to memory of 2532	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	sc.exe
PID 2188 wrote to memory of 2532	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	sc.exe
PID 2188 wrote to memory of 2532	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	sc.exe
PID 2188 wrote to memory of 2532	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	sc.exe
PID 2188 wrote to memory of 2888	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	sc.exe
PID 2188 wrote to memory of 2888	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	sc.exe
PID 2188 wrote to memory of 2888	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	sc.exe
PID 2188 wrote to memory of 2888	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	sc.exe
PID 2188 wrote to memory of 2824	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	netsh.exe
PID 2188 wrote to memory of 2824	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	netsh.exe
PID 2188 wrote to memory of 2824	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	netsh.exe
PID 2188 wrote to memory of 2824	2188	bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe	netsh.exe
PID 2904 wrote to memory of 3000	2904	gicrnjfw.exe	svchost.exe
PID 2904 wrote to memory of 3000	2904	gicrnjfw.exe	svchost.exe
PID 2904 wrote to memory of 3000	2904	gicrnjfw.exe	svchost.exe
PID 2904 wrote to memory of 3000	2904	gicrnjfw.exe	svchost.exe
PID 2904 wrote to memory of 3000	2904	gicrnjfw.exe	svchost.exe
PID 2904 wrote to memory of 3000	2904	gicrnjfw.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe
"C:\Users\Admin\AppData\Local\Temp\bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2188
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fpximbbd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2616
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gicrnjfw.exe" C:\Windows\SysWOW64\fpximbbd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2304
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fpximbbd binPath= "C:\Windows\SysWOW64\fpximbbd\gicrnjfw.exe /d\"C:\Users\Admin\AppData\Local\Temp\bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2140
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fpximbbd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2532
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fpximbbd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2888
- 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:2824

C:\Windows\SysWOW64\fpximbbd\gicrnjfw.exe
C:\Windows\SysWOW64\fpximbbd\gicrnjfw.exe /d"C:\Users\Admin\AppData\Local\Temp\bce3694725d1ffe6c07fdfaa7b72f20ae3b458bbd713bcb12aa6f0692d1f4794.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2904
- 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:3000

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
10.2MB

MD5
eb60016f581d5eaa5a97f1f660b1d3e5

SHA1
fb88ccf0c0787f99136c89b69a30fbdcc2c2d2c3

SHA256
f2a5570cfbc70b63a668dc749529cb81c113ccd1048d731703224caf393ad60f

SHA512
1dfcc552cc641effe4f5ed7bc345d5e8bd882ed814318461a46e7c9da47802f840abf8c45a6398f42e5e2a602ebb32c21ecfdf1e2e71be134748d6992d7dfb13

Download Submit
memory/2188-8-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/2188-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2188-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2188-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2188-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2188-1-0x00000000008B0000-0x00000000009B0000-memory.dmp

Filesize
1024KB

Download
memory/2904-17-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3000-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3000-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3000-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3000-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3000-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads