tofsee | aff201b2d0bae43cb9142bb08c4310cdf6c05e2cbc90476ad2f3975bd4614aea

Analysis

max time kernel
146s
max time network
147s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-11-2024 00:52

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General

Target

88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe
Size

13.5MB
MD5

88cc20a3d0f8245e86acacc144354ec3
SHA1

fa61201bf5ccc7b953f6800b5d124454c18c2a63
SHA256

aff201b2d0bae43cb9142bb08c4310cdf6c05e2cbc90476ad2f3975bd4614aea
SHA512

1cf2ca43855f4e87a27d276840e6699e288d231c89ae59c07708486e63bddf6a90726b3a032e2ab1fe58316072158292344a1ef94d8f1e2d25dae6286fc9ea11
SSDEEP

49152:vGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGH:

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\ebeyetfr = "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
2544	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\ebeyetfr\ImagePath = "C:\\Windows\\SysWOW64\\ebeyetfr\\htolsrrf.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
3048	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2588	htolsrrf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2588 set thread context of 3048	2588	htolsrrf.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2668	sc.exe
2184	sc.exe
2816	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	htolsrrf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2440 wrote to memory of 2748	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	30
PID 2440 wrote to memory of 2748	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	30
PID 2440 wrote to memory of 2748	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	30
PID 2440 wrote to memory of 2748	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	30
PID 2440 wrote to memory of 2948	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	32
PID 2440 wrote to memory of 2948	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	32
PID 2440 wrote to memory of 2948	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	32
PID 2440 wrote to memory of 2948	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	32
PID 2440 wrote to memory of 2668	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	34
PID 2440 wrote to memory of 2668	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	34
PID 2440 wrote to memory of 2668	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	34
PID 2440 wrote to memory of 2668	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	34
PID 2440 wrote to memory of 2184	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	36
PID 2440 wrote to memory of 2184	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	36
PID 2440 wrote to memory of 2184	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	36
PID 2440 wrote to memory of 2184	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	36
PID 2440 wrote to memory of 2816	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	38
PID 2440 wrote to memory of 2816	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	38
PID 2440 wrote to memory of 2816	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	38
PID 2440 wrote to memory of 2816	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	38
PID 2440 wrote to memory of 2544	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	41
PID 2440 wrote to memory of 2544	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	41
PID 2440 wrote to memory of 2544	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	41
PID 2440 wrote to memory of 2544	2440	88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe	41
PID 2588 wrote to memory of 3048	2588	htolsrrf.exe	43
PID 2588 wrote to memory of 3048	2588	htolsrrf.exe	43
PID 2588 wrote to memory of 3048	2588	htolsrrf.exe	43
PID 2588 wrote to memory of 3048	2588	htolsrrf.exe	43
PID 2588 wrote to memory of 3048	2588	htolsrrf.exe	43
PID 2588 wrote to memory of 3048	2588	htolsrrf.exe	43

C:\Users\Admin\AppData\Local\Temp\88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2440
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ebeyetfr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2748
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\htolsrrf.exe" C:\Windows\SysWOW64\ebeyetfr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2948
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ebeyetfr binPath= "C:\Windows\SysWOW64\ebeyetfr\htolsrrf.exe /d\"C:\Users\Admin\AppData\Local\Temp\88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.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 ebeyetfr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2184
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ebeyetfr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2816
- 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:2544

C:\Windows\SysWOW64\ebeyetfr\htolsrrf.exe
C:\Windows\SysWOW64\ebeyetfr\htolsrrf.exe /d"C:\Users\Admin\AppData\Local\Temp\88cc20a3d0f8245e86acacc144354ec3_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2588
- 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:3048

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\htolsrrf.exe

Filesize
15.0MB

MD5
405eb400a76d7adc56cbc4b76cf3a72b

SHA1
078110792e788d6cca1d71b8623b526ea55e5e97

SHA256
5fb4c465fa5f17fe22ad01018b19123b9cecd3033cd997b47143d9ad1cd63615

SHA512
f015b8eceb15ceb6518c77d404088f6d3b5c5f0336f875df73121f76327afa6e79d21afa0f2fbd010929731bc7ee027098802e3880bfe3dda61fa7bd2df96bbc

Download Submit
memory/2440-8-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2440-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2440-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2440-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2440-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2440-1-0x0000000000500000-0x0000000000600000-memory.dmp

Filesize
1024KB

Download
memory/2588-17-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/3048-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3048-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3048-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3048-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3048-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads