tofsee | e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef

Analysis

max time kernel
144s
max time network
144s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29-12-2024 06:05

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General

Target

JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe
Size

287KB
MD5

f8c4e7377e1e2c004785641eb1ac23b9
SHA1

2cc839dc523d85058144d5d8f98e16665750ebd2
SHA256

e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef
SHA512

484bd7ead8788031732df37084fd7d84b2e6c8768a88c0ec519bdd767dc20af6c898d61586915e49d95db12b16cde3cdbd8096b3899e5d27ccf91b4092b8aab6
SSDEEP

6144:QidOABJIY38y2btsv96WhaznPPkyyr9Z1wmkE:QiEEJl38Ftsv96mek79Z1wmkE

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

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\wmmocdnu = "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
2708	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\wmmocdnu\ImagePath = "C:\\Windows\\SysWOW64\\wmmocdnu\\icyepzrx.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2780	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2696	icyepzrx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2696 set thread context of 2780	2696	icyepzrx.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
1264	sc.exe
2688	sc.exe
2056	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icyepzrx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2336 wrote to memory of 2972	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	30
PID 2336 wrote to memory of 2972	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	30
PID 2336 wrote to memory of 2972	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	30
PID 2336 wrote to memory of 2972	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	30
PID 2336 wrote to memory of 1836	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	32
PID 2336 wrote to memory of 1836	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	32
PID 2336 wrote to memory of 1836	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	32
PID 2336 wrote to memory of 1836	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	32
PID 2336 wrote to memory of 1264	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	34
PID 2336 wrote to memory of 1264	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	34
PID 2336 wrote to memory of 1264	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	34
PID 2336 wrote to memory of 1264	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	34
PID 2336 wrote to memory of 2688	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	36
PID 2336 wrote to memory of 2688	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	36
PID 2336 wrote to memory of 2688	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	36
PID 2336 wrote to memory of 2688	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	36
PID 2336 wrote to memory of 2056	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	38
PID 2336 wrote to memory of 2056	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	38
PID 2336 wrote to memory of 2056	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	38
PID 2336 wrote to memory of 2056	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	38
PID 2336 wrote to memory of 2708	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	41
PID 2336 wrote to memory of 2708	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	41
PID 2336 wrote to memory of 2708	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	41
PID 2336 wrote to memory of 2708	2336	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	41
PID 2696 wrote to memory of 2780	2696	icyepzrx.exe	43
PID 2696 wrote to memory of 2780	2696	icyepzrx.exe	43
PID 2696 wrote to memory of 2780	2696	icyepzrx.exe	43
PID 2696 wrote to memory of 2780	2696	icyepzrx.exe	43
PID 2696 wrote to memory of 2780	2696	icyepzrx.exe	43
PID 2696 wrote to memory of 2780	2696	icyepzrx.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2336
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wmmocdnu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2972
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\icyepzrx.exe" C:\Windows\SysWOW64\wmmocdnu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1836
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wmmocdnu binPath= "C:\Windows\SysWOW64\wmmocdnu\icyepzrx.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1264
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wmmocdnu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2688
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wmmocdnu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2056
- 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:2708

C:\Windows\SysWOW64\wmmocdnu\icyepzrx.exe
C:\Windows\SysWOW64\wmmocdnu\icyepzrx.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2696
- 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:2780

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\icyepzrx.exe

Filesize
14.5MB

MD5
d878a63444be576606bd6147709efa20

SHA1
2c696fac00d0a54ed01c494f2b13d61883e1a2fc

SHA256
ad9a710a6c81a99522e91fcd37ff72ef512adb7c2f59ff6efe753d393f3d973e

SHA512
bf7ea9244f0d5abdc9ec7fa68968bb45c068145a772a27404f23915b32b29ea08f3afa688d3c8e0954b285ee0ed72041df73474e0b8b52280c2ff57e572ca22c

Download Submit
memory/2336-8-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/2336-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2336-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2336-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2336-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2336-1-0x0000000002D00000-0x0000000002E00000-memory.dmp

Filesize
1024KB

Download
memory/2696-17-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/2780-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2780-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2780-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2780-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2780-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads