tofsee | 1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2

Analysis

max time kernel
147s
max time network
147s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
29/12/2024, 13:40

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General

Target

JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe
Size

164KB
MD5

109545ccd346a64438c76ad20826e428
SHA1

b82cc2dd0a82359f66e70bdcdbb906fe977f2742
SHA256

1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2
SHA512

687069148861245b2facf2024036a881f3afc43e52b81419f0c7248288a1853106d67a1c5cd27017ad18cd0f4837216d61b49488eeaad843436940a130aad848
SSDEEP

1536:dJI8UMLeRaE1C6XYLrh8PL7gzXZ87TQBpoC/o3jjIcUQRfr5AICRZShtDj46H9Dg:d1uZg7ZoCQ3jbBr5LQShtf4w7zS9H6l

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\znnmddmt = "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
2404	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\znnmddmt\ImagePath = "C:\\Windows\\SysWOW64\\znnmddmt\\ykweepem.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2020	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2616	ykweepem.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2616 set thread context of 2020	2616	ykweepem.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2736	sc.exe
2768	sc.exe
2572	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	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.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	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ykweepem.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2680 wrote to memory of 2776	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	30
PID 2680 wrote to memory of 2776	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	30
PID 2680 wrote to memory of 2776	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	30
PID 2680 wrote to memory of 2776	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	30
PID 2680 wrote to memory of 2400	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	32
PID 2680 wrote to memory of 2400	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	32
PID 2680 wrote to memory of 2400	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	32
PID 2680 wrote to memory of 2400	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	32
PID 2680 wrote to memory of 2736	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	34
PID 2680 wrote to memory of 2736	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	34
PID 2680 wrote to memory of 2736	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	34
PID 2680 wrote to memory of 2736	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	34
PID 2680 wrote to memory of 2768	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	36
PID 2680 wrote to memory of 2768	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	36
PID 2680 wrote to memory of 2768	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	36
PID 2680 wrote to memory of 2768	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	36
PID 2680 wrote to memory of 2572	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	38
PID 2680 wrote to memory of 2572	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	38
PID 2680 wrote to memory of 2572	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	38
PID 2680 wrote to memory of 2572	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	38
PID 2680 wrote to memory of 2404	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	41
PID 2680 wrote to memory of 2404	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	41
PID 2680 wrote to memory of 2404	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	41
PID 2680 wrote to memory of 2404	2680	JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe	41
PID 2616 wrote to memory of 2020	2616	ykweepem.exe	43
PID 2616 wrote to memory of 2020	2616	ykweepem.exe	43
PID 2616 wrote to memory of 2020	2616	ykweepem.exe	43
PID 2616 wrote to memory of 2020	2616	ykweepem.exe	43
PID 2616 wrote to memory of 2020	2616	ykweepem.exe	43
PID 2616 wrote to memory of 2020	2616	ykweepem.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2680
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\znnmddmt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2776
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ykweepem.exe" C:\Windows\SysWOW64\znnmddmt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2400
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create znnmddmt binPath= "C:\Windows\SysWOW64\znnmddmt\ykweepem.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2736
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description znnmddmt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2768
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start znnmddmt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2572
- 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:2404

C:\Windows\SysWOW64\znnmddmt\ykweepem.exe
C:\Windows\SysWOW64\znnmddmt\ykweepem.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1a3d452d707358e9968750470f83aac0128fb466b334ebdc715d1bcfa25049e2.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2616
- 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:2020

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\ykweepem.exe

Filesize
10.3MB

MD5
ff2c3116c4897e6ea2527f70dd16091a

SHA1
fb4c210aae3edc902283cbaa771771fb68ee6c25

SHA256
359b1f50e12910368eca38e90757eec3163a147d668bfe94936b657db68f1c11

SHA512
633b076078180044a7b3fc221323cfe02ed655df222af83b8e58a6a61514dba691e7bf9794d108658aca5d6802b600fda56fa4c890b692ffd111e8705915f3dc

Download Submit
memory/2020-11-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2020-18-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2020-17-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2020-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2020-14-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2616-15-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2680-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2680-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2680-1-0x00000000005A0000-0x00000000006A0000-memory.dmp

Filesize
1024KB

Download
memory/2680-8-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2680-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2680-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads