tofsee | bc51cad0a8ed5eb57551f034a5f693b4d1c135201a38ff4b3d7c1eb6151745c2

Analysis

max time kernel
145s
max time network
145s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11-01-2025 03:24

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General

Target

JaffaCakes118_f5a99263467440a04da884e37b581577.exe
Size

14.2MB
MD5

f5a99263467440a04da884e37b581577
SHA1

58c016d9dae50898c03dc602997db96b14fbc2fe
SHA256

bc51cad0a8ed5eb57551f034a5f693b4d1c135201a38ff4b3d7c1eb6151745c2
SHA512

b5255af60ca12756011398e5907ef6587cd9ea77401b55b30c0812c2c616ab492eff9d2bba6c5a7ba7732e2f4f0eba80d702bb0d98e767499d182219e16f45af
SSDEEP

196608:H4TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTH:H

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\dhrnqhqc = "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
2724	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\dhrnqhqc\ImagePath = "C:\\Windows\\SysWOW64\\dhrnqhqc\\ovhudqrl.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2972	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2916	ovhudqrl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2916 set thread context of 2972	2916	ovhudqrl.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2692	sc.exe
2100	sc.exe
2880	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_f5a99263467440a04da884e37b581577.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ovhudqrl.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	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 2504	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	30
PID 2364 wrote to memory of 2504	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	30
PID 2364 wrote to memory of 2504	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	30
PID 2364 wrote to memory of 2504	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	30
PID 2364 wrote to memory of 2108	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	32
PID 2364 wrote to memory of 2108	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	32
PID 2364 wrote to memory of 2108	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	32
PID 2364 wrote to memory of 2108	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	32
PID 2364 wrote to memory of 2692	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	34
PID 2364 wrote to memory of 2692	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	34
PID 2364 wrote to memory of 2692	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	34
PID 2364 wrote to memory of 2692	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	34
PID 2364 wrote to memory of 2100	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	36
PID 2364 wrote to memory of 2100	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	36
PID 2364 wrote to memory of 2100	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	36
PID 2364 wrote to memory of 2100	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	36
PID 2364 wrote to memory of 2880	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	38
PID 2364 wrote to memory of 2880	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	38
PID 2364 wrote to memory of 2880	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	38
PID 2364 wrote to memory of 2880	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	38
PID 2364 wrote to memory of 2724	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	41
PID 2364 wrote to memory of 2724	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	41
PID 2364 wrote to memory of 2724	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	41
PID 2364 wrote to memory of 2724	2364	JaffaCakes118_f5a99263467440a04da884e37b581577.exe	41
PID 2916 wrote to memory of 2972	2916	ovhudqrl.exe	43
PID 2916 wrote to memory of 2972	2916	ovhudqrl.exe	43
PID 2916 wrote to memory of 2972	2916	ovhudqrl.exe	43
PID 2916 wrote to memory of 2972	2916	ovhudqrl.exe	43
PID 2916 wrote to memory of 2972	2916	ovhudqrl.exe	43
PID 2916 wrote to memory of 2972	2916	ovhudqrl.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f5a99263467440a04da884e37b581577.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f5a99263467440a04da884e37b581577.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dhrnqhqc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2504
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ovhudqrl.exe" C:\Windows\SysWOW64\dhrnqhqc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2108
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dhrnqhqc binPath= "C:\Windows\SysWOW64\dhrnqhqc\ovhudqrl.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f5a99263467440a04da884e37b581577.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2692
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dhrnqhqc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2100
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dhrnqhqc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2880
- 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:2724

C:\Windows\SysWOW64\dhrnqhqc\ovhudqrl.exe
C:\Windows\SysWOW64\dhrnqhqc\ovhudqrl.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f5a99263467440a04da884e37b581577.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2916
- 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:2972

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\ovhudqrl.exe

Filesize
14.8MB

MD5
3d95a9f0509cb36d6cc35a040f9bda58

SHA1
eb05e87801fc134de2159725a7b8eb1c1c056a1d

SHA256
857c8946a33e5fe1a5733f7d0086767b6e5c2e17c39b6f7e144338f4bde6f317

SHA512
33d6aabbcc391bca01cbcc8e4caac853e48a25aa1c486a4965195cbb080d4218ac5160eac8eb28d6e350488e58b8bef3077eddd0936a987f1abafb7ede71f882

Download Submit
memory/2364-8-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/2364-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2364-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2364-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2364-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2364-1-0x0000000000910000-0x0000000000A10000-memory.dmp

Filesize
1024KB

Download
memory/2916-17-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/2972-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2972-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2972-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2972-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2972-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads