tofsee | 97d23550ec191ff048c89ae23e9ef5ae009ff65d79e2f286029ac90331bc90ba

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
31-12-2024 22:19

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General

Target

JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe
Size

281KB
MD5

3a9ef0bc05952c74715b6585f97c41f6
SHA1

877fa1694843c5bf3f5124e8b17ead26bc211c13
SHA256

97d23550ec191ff048c89ae23e9ef5ae009ff65d79e2f286029ac90331bc90ba
SHA512

2d67f3d29359ff2cdd058f6526e22604cf69f7126f09a0006fa8a34a90db0ac6d895cd78b5e570789d79584101add9e5ac732473d7e4cca5a9b8fee2262c2034
SSDEEP

6144:YTCpFumdDpw7jmzwdJ+nY6eYqX7tNfVXVHQLIiu8cfo0/pW:YTkFugpn2UxwZGEX8cA0/M

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\oujmaduk = "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
2856	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\oujmaduk\ImagePath = "C:\\Windows\\SysWOW64\\oujmaduk\\umelkbmt.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2648	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2764	umelkbmt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2764 set thread context of 2648	2764	umelkbmt.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2696	sc.exe
1172	sc.exe
2872	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.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	umelkbmt.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	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2392 wrote to memory of 1328	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	30
PID 2392 wrote to memory of 1328	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	30
PID 2392 wrote to memory of 1328	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	30
PID 2392 wrote to memory of 1328	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	30
PID 2392 wrote to memory of 1844	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	32
PID 2392 wrote to memory of 1844	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	32
PID 2392 wrote to memory of 1844	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	32
PID 2392 wrote to memory of 1844	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	32
PID 2392 wrote to memory of 2696	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	34
PID 2392 wrote to memory of 2696	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	34
PID 2392 wrote to memory of 2696	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	34
PID 2392 wrote to memory of 2696	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	34
PID 2392 wrote to memory of 1172	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	36
PID 2392 wrote to memory of 1172	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	36
PID 2392 wrote to memory of 1172	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	36
PID 2392 wrote to memory of 1172	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	36
PID 2392 wrote to memory of 2872	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	38
PID 2392 wrote to memory of 2872	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	38
PID 2392 wrote to memory of 2872	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	38
PID 2392 wrote to memory of 2872	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	38
PID 2392 wrote to memory of 2856	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	41
PID 2392 wrote to memory of 2856	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	41
PID 2392 wrote to memory of 2856	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	41
PID 2392 wrote to memory of 2856	2392	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	41
PID 2764 wrote to memory of 2648	2764	umelkbmt.exe	43
PID 2764 wrote to memory of 2648	2764	umelkbmt.exe	43
PID 2764 wrote to memory of 2648	2764	umelkbmt.exe	43
PID 2764 wrote to memory of 2648	2764	umelkbmt.exe	43
PID 2764 wrote to memory of 2648	2764	umelkbmt.exe	43
PID 2764 wrote to memory of 2648	2764	umelkbmt.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2392
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\oujmaduk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1328
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\umelkbmt.exe" C:\Windows\SysWOW64\oujmaduk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1844
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create oujmaduk binPath= "C:\Windows\SysWOW64\oujmaduk\umelkbmt.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2696
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description oujmaduk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1172
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start oujmaduk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2872
- 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:2856

C:\Windows\SysWOW64\oujmaduk\umelkbmt.exe
C:\Windows\SysWOW64\oujmaduk\umelkbmt.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2764
- 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:2648

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\umelkbmt.exe

Filesize
12.2MB

MD5
ef28b2fe62fc9edbeb0b5f974e217642

SHA1
48f0987ab2c3184a50a24eb6f822cabc74b0fbe1

SHA256
dc6acb30751b02faab51c9c9f2c55ea3cc8d30b154f4193693e1b794713c16fe

SHA512
80c5c06a82e9f76a1cb9e2f2460c819fc05786b724e3d6691da3ea3ece7ed8053bdedb887b58194f90b60fa793914c4966d7d752487e0a007ba450a9f71c4e46

Download Submit
memory/2392-1-0x00000000030B0000-0x00000000031B0000-memory.dmp

Filesize
1024KB

Download
memory/2392-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2392-4-0x0000000000400000-0x0000000002F10000-memory.dmp

Filesize
43.1MB

Download
memory/2392-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2392-9-0x0000000000400000-0x0000000002F10000-memory.dmp

Filesize
43.1MB

Download
memory/2648-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2648-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2648-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2648-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2648-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2764-16-0x0000000000400000-0x0000000002F10000-memory.dmp

Filesize
43.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads