tofsee | 61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
22-12-2024 00:18

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General

Target

JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe
Size

187KB
MD5

a8b1c1d06132f225e9f6bf51a34e04d6
SHA1

7cce87816f01af8dd37d3174bed6dc7d6b386114
SHA256

61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4
SHA512

2c749cfa18f9ea5fad1e42d928f53a8b131423d3b3f6811e102955fea43bcbcfa6c03cc8d440c3e2188acd4c3818665356a6bef195b633ad08a681452fb6a702
SSDEEP

3072:J7Xjs7nz7xT/bchc0+aHM7IdudDpwjvT1MHemjIGnipZa9uD6Vdyhkd:Bs7nz7xT/bc+IHuDNpST1MHrjPniwVf

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

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\chnfgbwy = "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
2972	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\chnfgbwy\ImagePath = "C:\\Windows\\SysWOW64\\chnfgbwy\\wfowkckt.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
584	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2888	wfowkckt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2888 set thread context of 584	2888	wfowkckt.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2668	sc.exe
2312	sc.exe
2592	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wfowkckt.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	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 2600	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	30
PID 2156 wrote to memory of 2600	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	30
PID 2156 wrote to memory of 2600	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	30
PID 2156 wrote to memory of 2600	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	30
PID 2156 wrote to memory of 2772	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	32
PID 2156 wrote to memory of 2772	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	32
PID 2156 wrote to memory of 2772	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	32
PID 2156 wrote to memory of 2772	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	32
PID 2156 wrote to memory of 2668	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	34
PID 2156 wrote to memory of 2668	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	34
PID 2156 wrote to memory of 2668	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	34
PID 2156 wrote to memory of 2668	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	34
PID 2156 wrote to memory of 2312	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	36
PID 2156 wrote to memory of 2312	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	36
PID 2156 wrote to memory of 2312	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	36
PID 2156 wrote to memory of 2312	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	36
PID 2156 wrote to memory of 2592	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	38
PID 2156 wrote to memory of 2592	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	38
PID 2156 wrote to memory of 2592	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	38
PID 2156 wrote to memory of 2592	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	38
PID 2156 wrote to memory of 2972	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	41
PID 2156 wrote to memory of 2972	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	41
PID 2156 wrote to memory of 2972	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	41
PID 2156 wrote to memory of 2972	2156	JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe	41
PID 2888 wrote to memory of 584	2888	wfowkckt.exe	43
PID 2888 wrote to memory of 584	2888	wfowkckt.exe	43
PID 2888 wrote to memory of 584	2888	wfowkckt.exe	43
PID 2888 wrote to memory of 584	2888	wfowkckt.exe	43
PID 2888 wrote to memory of 584	2888	wfowkckt.exe	43
PID 2888 wrote to memory of 584	2888	wfowkckt.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2156
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\chnfgbwy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2600
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wfowkckt.exe" C:\Windows\SysWOW64\chnfgbwy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2772
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create chnfgbwy binPath= "C:\Windows\SysWOW64\chnfgbwy\wfowkckt.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2668
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description chnfgbwy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2312
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start chnfgbwy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2592
- 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:2972

C:\Windows\SysWOW64\chnfgbwy\wfowkckt.exe
C:\Windows\SysWOW64\chnfgbwy\wfowkckt.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61bca9b7bb7ff8784bb4457dabe18c22a906ca2355a1866e4e2edaea8560b6c4.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2888
- 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:584

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\wfowkckt.exe

Filesize
14.2MB

MD5
7944f7a04dc986f9abcea75becd2f31a

SHA1
d1604423eb3e0a2dcefdcb19d9225004d56a8f52

SHA256
013c55f2a3a9e676ef675ad97d0636a7329eb183fc6b40ed2eb09a75cf253ef7

SHA512
e6b72a6014fb5015a50bf51634139419eb17d6378148d7e2918cc72f9987097dbcde9c3f924a31d50852aeb64e6769e2935cd1d44bc3b7e32ba7219554c63a77

Download Submit
memory/584-15-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/584-10-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/584-13-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/584-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/584-17-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2156-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2156-1-0x0000000000250000-0x0000000000263000-memory.dmp

Filesize
76KB

Download
memory/2156-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2156-8-0x0000000000250000-0x0000000000263000-memory.dmp

Filesize
76KB

Download
memory/2156-7-0x00000000001B0000-0x00000000001BD000-memory.dmp

Filesize
52KB

Download
memory/2156-6-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2156-0-0x00000000001B0000-0x00000000001BD000-memory.dmp

Filesize
52KB

Download
memory/2888-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads