tofsee | 3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460

Analysis

max time kernel
148s
max time network
151s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
31-12-2024 03:22

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General

Target

JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe
Size

10.5MB
MD5

026f086162e7d6d864ca4dc744149bc0
SHA1

cc81af6e0d8bd8c89126f509ccb5714cce8a3ef0
SHA256

3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460
SHA512

ff7ba4526233eb5a7e6dfa4673bfe0dc9b354a9960c23822267cab62c1571139e93c3919d8bf38bd1afd58b147ea15a2fdc1ad6b92f2e0fd2e65b14847cdebf4
SSDEEP

49152:DkHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHn:

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

quadoil.ru

lakeflex.ru

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\knyiuojc = "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
2640	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\knyiuojc\ImagePath = "C:\\Windows\\SysWOW64\\knyiuojc\\rncchoul.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2796	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2940	rncchoul.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2940 set thread context of 2796	2940	rncchoul.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2156	sc.exe
572	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	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rncchoul.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2464 wrote to memory of 2056	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	31
PID 2464 wrote to memory of 2056	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	31
PID 2464 wrote to memory of 2056	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	31
PID 2464 wrote to memory of 2056	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	31
PID 2464 wrote to memory of 2240	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	33
PID 2464 wrote to memory of 2240	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	33
PID 2464 wrote to memory of 2240	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	33
PID 2464 wrote to memory of 2240	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	33
PID 2464 wrote to memory of 2156	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	35
PID 2464 wrote to memory of 2156	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	35
PID 2464 wrote to memory of 2156	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	35
PID 2464 wrote to memory of 2156	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	35
PID 2464 wrote to memory of 572	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	37
PID 2464 wrote to memory of 572	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	37
PID 2464 wrote to memory of 572	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	37
PID 2464 wrote to memory of 572	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	37
PID 2464 wrote to memory of 2816	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	39
PID 2464 wrote to memory of 2816	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	39
PID 2464 wrote to memory of 2816	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	39
PID 2464 wrote to memory of 2816	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	39
PID 2464 wrote to memory of 2640	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	42
PID 2464 wrote to memory of 2640	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	42
PID 2464 wrote to memory of 2640	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	42
PID 2464 wrote to memory of 2640	2464	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	42
PID 2940 wrote to memory of 2796	2940	rncchoul.exe	44
PID 2940 wrote to memory of 2796	2940	rncchoul.exe	44
PID 2940 wrote to memory of 2796	2940	rncchoul.exe	44
PID 2940 wrote to memory of 2796	2940	rncchoul.exe	44
PID 2940 wrote to memory of 2796	2940	rncchoul.exe	44
PID 2940 wrote to memory of 2796	2940	rncchoul.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2464
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\knyiuojc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2056
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rncchoul.exe" C:\Windows\SysWOW64\knyiuojc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2240
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create knyiuojc binPath= "C:\Windows\SysWOW64\knyiuojc\rncchoul.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2156
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description knyiuojc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:572
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start knyiuojc
  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:2640

C:\Windows\SysWOW64\knyiuojc\rncchoul.exe
C:\Windows\SysWOW64\knyiuojc\rncchoul.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2940
- 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:2796

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\rncchoul.exe

Filesize
11.9MB

MD5
23c57c6c7f848d2f34e351ac65162dd7

SHA1
24b54aa889cd851c52b3816016b941829b3ca5ba

SHA256
c842ccc9f862fa4e6251b4dcad869688055ea6d878395ab1d024a01674e819bc

SHA512
294f84d4b005012fa0de4484bb15cd5f374243564fe58e670a458b6e8090097218cc923e9f2886160024012851c2847ce19da5c467e80a630b3990648f89a462

Download Submit
memory/2464-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2464-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2464-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2464-8-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/2464-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2464-1-0x0000000000820000-0x0000000000920000-memory.dmp

Filesize
1024KB

Download
memory/2796-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2796-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2796-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2796-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2796-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2940-17-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads