tofsee | 952e4b5bba456e1bb30334d28d421a937a18a5ae6926ee914172f89c65e24acb

Analysis

max time kernel
140s
max time network
125s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
28-10-2024 14:15

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General

Target

7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe
Size

10.9MB
MD5

7a024b0d37c1167f69a9c9766c9af3a9
SHA1

7ddcff26d726b0cf3151704cf0f9e51158b93279
SHA256

952e4b5bba456e1bb30334d28d421a937a18a5ae6926ee914172f89c65e24acb
SHA512

236063040255aa606c77ae22a5a8b1a75b0953a09ade29096c76bb77cbe5b4fbee36e39fdd7ee9fca9bc71d965bbc2f6bff705aa4e3879c24bf04f7df0b6bfc8
SSDEEP

98304:rYTPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPv:r

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.6

lazystax.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\cdobcjn = "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
2816	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\cdobcjn\ImagePath = "C:\\Windows\\SysWOW64\\cdobcjn\\etxbrevv.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1648	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2820	etxbrevv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2820 set thread context of 1648	2820	etxbrevv.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2160	sc.exe
2848	sc.exe
3012	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	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	etxbrevv.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2744 wrote to memory of 2892	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	31
PID 2744 wrote to memory of 2892	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	31
PID 2744 wrote to memory of 2892	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	31
PID 2744 wrote to memory of 2892	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	31
PID 2744 wrote to memory of 2804	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	33
PID 2744 wrote to memory of 2804	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	33
PID 2744 wrote to memory of 2804	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	33
PID 2744 wrote to memory of 2804	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	33
PID 2744 wrote to memory of 2160	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	35
PID 2744 wrote to memory of 2160	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	35
PID 2744 wrote to memory of 2160	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	35
PID 2744 wrote to memory of 2160	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	35
PID 2744 wrote to memory of 2848	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	37
PID 2744 wrote to memory of 2848	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	37
PID 2744 wrote to memory of 2848	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	37
PID 2744 wrote to memory of 2848	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	37
PID 2744 wrote to memory of 3012	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	39
PID 2744 wrote to memory of 3012	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	39
PID 2744 wrote to memory of 3012	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	39
PID 2744 wrote to memory of 3012	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	39
PID 2744 wrote to memory of 2816	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	42
PID 2744 wrote to memory of 2816	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	42
PID 2744 wrote to memory of 2816	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	42
PID 2744 wrote to memory of 2816	2744	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	42
PID 2820 wrote to memory of 1648	2820	etxbrevv.exe	44
PID 2820 wrote to memory of 1648	2820	etxbrevv.exe	44
PID 2820 wrote to memory of 1648	2820	etxbrevv.exe	44
PID 2820 wrote to memory of 1648	2820	etxbrevv.exe	44
PID 2820 wrote to memory of 1648	2820	etxbrevv.exe	44
PID 2820 wrote to memory of 1648	2820	etxbrevv.exe	44

C:\Users\Admin\AppData\Local\Temp\7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2744
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cdobcjn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2892
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\etxbrevv.exe" C:\Windows\SysWOW64\cdobcjn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2804
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cdobcjn binPath= "C:\Windows\SysWOW64\cdobcjn\etxbrevv.exe /d\"C:\Users\Admin\AppData\Local\Temp\7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2160
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cdobcjn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2848
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cdobcjn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3012
- 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:2816

C:\Windows\SysWOW64\cdobcjn\etxbrevv.exe
C:\Windows\SysWOW64\cdobcjn\etxbrevv.exe /d"C:\Users\Admin\AppData\Local\Temp\7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2820
- 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:1648

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\etxbrevv.exe

Filesize
10.5MB

MD5
d6d1db29d6685c7254f3d24fcb5d918b

SHA1
3d0b536bbebf8b982570a7f020419b52eec8abc3

SHA256
5c6262f8a6ce018b6eb32110edc0d2bdc96dfd2be9abbda9d03f10debd44d89c

SHA512
6cf3fa8c045b1bf76b6a47f3901898c30390665e7e052d78bf3df4fb8477a1326bd10ba1578cf4d77a56284caf9d593b6bacb298a50c4cf822b5ca09e86e7cf2

Download Submit
memory/1648-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1648-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1648-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1648-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1648-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2744-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2744-1-0x00000000002D0000-0x00000000003D0000-memory.dmp

Filesize
1024KB

Download
memory/2744-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2744-8-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2744-7-0x0000000000400000-0x0000000000C17000-memory.dmp

Filesize
8.1MB

Download
memory/2744-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2820-17-0x0000000000400000-0x0000000000C17000-memory.dmp

Filesize
8.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads