tofsee | c9ce74a6fde17c62cff139a74cb86d26c53196d0712a3ae677fa74910b34047b

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03/11/2024, 12:24

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General

Target
8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe
Size 287KB
Sample241103-plbd2steqh
SHA256 c9ce74a6fde17c62cff139a74cb86d26c53196d0712a3ae677fa74910b34047b
MD5 8b781b88987500ec50c623ccf8aa6a8a
SHA1 857882d0763580b23e64e1f3e4f7eb7bd9173b5b
SHA512 d5f730c21bb733beb4230d006b2cb39a2a560598c08832ab6510a600eb80371cc72d05a3f45f5131a54faa8346916ac49c4f1963c17dc4eecf2de786308ac2cb
SSDEEP 6144:8wkmQ1kUgOdYL9yOPoeA8rFXj77QWldyQG1/e:PrXyYL9yOPk8rFT70WY
MD5 SHA1 SHA512 SSDEEP

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
Tofsee family
tofsee
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
2932	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\qxvoqkwm\ImagePath = "C:\\Windows\\SysWOW64\\qxvoqkwm\\ilemkmue.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4788	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
224	ilemkmue.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 224 set thread context of 4788	224	ilemkmue.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
4356	sc.exe
3464	sc.exe
464	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3428	1492	WerFault.exe	83
3004	224	WerFault.exe	99

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.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	ilemkmue.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1492 wrote to memory of 2392	1492	8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe	87
PID 1492 wrote to memory of 2392	1492	8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe	87
PID 1492 wrote to memory of 2392	1492	8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe	87
PID 1492 wrote to memory of 4008	1492	8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe	89
PID 1492 wrote to memory of 4008	1492	8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe	89
PID 1492 wrote to memory of 4008	1492	8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe	89
PID 1492 wrote to memory of 4356	1492	8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe	91
PID 1492 wrote to memory of 4356	1492	8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe	91
PID 1492 wrote to memory of 4356	1492	8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe	91
PID 1492 wrote to memory of 3464	1492	8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe	95
PID 1492 wrote to memory of 3464	1492	8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe	95
PID 1492 wrote to memory of 3464	1492	8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe	95
PID 1492 wrote to memory of 464	1492	8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe	97
PID 1492 wrote to memory of 464	1492	8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe	97
PID 1492 wrote to memory of 464	1492	8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe	97
PID 1492 wrote to memory of 2932	1492	8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe	101
PID 1492 wrote to memory of 2932	1492	8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe	101
PID 1492 wrote to memory of 2932	1492	8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe	101
PID 224 wrote to memory of 4788	224	ilemkmue.exe	107
PID 224 wrote to memory of 4788	224	ilemkmue.exe	107
PID 224 wrote to memory of 4788	224	ilemkmue.exe	107
PID 224 wrote to memory of 4788	224	ilemkmue.exe	107
PID 224 wrote to memory of 4788	224	ilemkmue.exe	107

C:\Users\Admin\AppData\Local\Temp\8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1492
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qxvoqkwm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2392
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ilemkmue.exe" C:\Windows\SysWOW64\qxvoqkwm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4008
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qxvoqkwm binPath= "C:\Windows\SysWOW64\qxvoqkwm\ilemkmue.exe /d\"C:\Users\Admin\AppData\Local\Temp\8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4356
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qxvoqkwm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3464
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qxvoqkwm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:464
- 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:2932
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1492 -s 1224
  2⤵
  - Program crash
  PID:3428

C:\Windows\SysWOW64\qxvoqkwm\ilemkmue.exe
C:\Windows\SysWOW64\qxvoqkwm\ilemkmue.exe /d"C:\Users\Admin\AppData\Local\Temp\8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:224
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4788
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 224 -s 560
  2⤵
  - Program crash
  PID:3004

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1492 -ip 1492
1⤵
PID:2396

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 224 -ip 224
1⤵
PID:4440

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

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

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

ilemkmue.exe

Path C:\Users\Admin\AppData\Local\Temp\ilemkmue.exe
Size 11.9MB
SHA256 807823181bccca5299feabb4197710cd1d6ca412c4b327ff8ed8c61cb8a6ef5c
MD5 1af794be6a4b5c9b0b82c49fd6952efe
SHA1 b60b8316c37591e395531fc737304c6ce4028e77
SHA512 5a1b379baebbd805e19fc759a9c61cb9d9f7b18aa9475c3c6e912aa89ab6b35991656761f462a921a95913089bdcf62aa5c0254d440ba9949b0b40d002c6a047
SSDEEP 6144:WwkmQ1kUgOdYL9yOPoeA8rFXj77QWldyQG1/e:lrXyYL9yOPk8rFT70WY
MD5 SHA1 SHA512 SSDEEP

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memory/224-15-0x0000000000400000-0x0000000002B90000-memory.dmp

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memory/1492-1-0x0000000002DF0000-0x0000000002EF0000-memory.dmp

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memory/1492-2-0x0000000002D40000-0x0000000002D53000-memory.dmp

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memory/1492-3-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/1492-10-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/1492-9-0x0000000002D40000-0x0000000002D53000-memory.dmp

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memory/1492-8-0x0000000000400000-0x0000000002B90000-memory.dmp

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memory/4788-11-0x0000000000600000-0x0000000000615000-memory.dmp

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memory/4788-13-0x0000000000600000-0x0000000000615000-memory.dmp

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memory/4788-14-0x0000000000600000-0x0000000000615000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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