tofsee | 1aee6a5bcf5228486fc5cb5e14a547ba8874a409a930a407c366c6794a586d7a

Analysis

max time kernel
148s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-12-2024 21:43

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General

Target

b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe
Size

10.1MB
MD5

b5499023bec1ab1093f9a5ebc8b494dc
SHA1

0fdef03dbf650bdb19080042bc0704c92e315a49
SHA256

1aee6a5bcf5228486fc5cb5e14a547ba8874a409a930a407c366c6794a586d7a
SHA512

4d8cf6ff7ee9b1650491671c73a7e0b2732c85265495f8a722421a011b48228d95fc8055e97e2c8c9fac082cd475a955894cfc265aed0d86fd85aa3cc8c1984f
SSDEEP

98304:YYTPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPv:Y

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\rvlzhghm = "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
2056	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\rvlzhghm\ImagePath = "C:\\Windows\\SysWOW64\\rvlzhghm\\zdogkrsy.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1240	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2788	zdogkrsy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2788 set thread context of 1240	2788	zdogkrsy.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2336	sc.exe
2304	sc.exe
600	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 queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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	b5499023bec1ab1093f9a5ebc8b494dc_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	sc.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	zdogkrsy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2076 wrote to memory of 2904	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	31
PID 2076 wrote to memory of 2904	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	31
PID 2076 wrote to memory of 2904	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	31
PID 2076 wrote to memory of 2904	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	31
PID 2076 wrote to memory of 1636	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	33
PID 2076 wrote to memory of 1636	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	33
PID 2076 wrote to memory of 1636	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	33
PID 2076 wrote to memory of 1636	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	33
PID 2076 wrote to memory of 2304	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	35
PID 2076 wrote to memory of 2304	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	35
PID 2076 wrote to memory of 2304	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	35
PID 2076 wrote to memory of 2304	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	35
PID 2076 wrote to memory of 600	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	37
PID 2076 wrote to memory of 600	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	37
PID 2076 wrote to memory of 600	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	37
PID 2076 wrote to memory of 600	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	37
PID 2076 wrote to memory of 2336	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	39
PID 2076 wrote to memory of 2336	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	39
PID 2076 wrote to memory of 2336	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	39
PID 2076 wrote to memory of 2336	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	39
PID 2076 wrote to memory of 2056	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	42
PID 2076 wrote to memory of 2056	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	42
PID 2076 wrote to memory of 2056	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	42
PID 2076 wrote to memory of 2056	2076	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	42
PID 2788 wrote to memory of 1240	2788	zdogkrsy.exe	44
PID 2788 wrote to memory of 1240	2788	zdogkrsy.exe	44
PID 2788 wrote to memory of 1240	2788	zdogkrsy.exe	44
PID 2788 wrote to memory of 1240	2788	zdogkrsy.exe	44
PID 2788 wrote to memory of 1240	2788	zdogkrsy.exe	44
PID 2788 wrote to memory of 1240	2788	zdogkrsy.exe	44

C:\Users\Admin\AppData\Local\Temp\b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2076
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rvlzhghm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2904
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zdogkrsy.exe" C:\Windows\SysWOW64\rvlzhghm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1636
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rvlzhghm binPath= "C:\Windows\SysWOW64\rvlzhghm\zdogkrsy.exe /d\"C:\Users\Admin\AppData\Local\Temp\b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2304
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rvlzhghm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:600
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rvlzhghm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2336
- 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:2056

C:\Windows\SysWOW64\rvlzhghm\zdogkrsy.exe
C:\Windows\SysWOW64\rvlzhghm\zdogkrsy.exe /d"C:\Users\Admin\AppData\Local\Temp\b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2788
- 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:1240

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\zdogkrsy.exe

Filesize
12.7MB

MD5
af67a8f951a509366774e6c6339d3e19

SHA1
0639231eab9aec2cbfee4b892dd2a1e0f548be0a

SHA256
9969e9c8a1aed0a831751af391af9f129a0ac265cb9188687f24aa1734866fc9

SHA512
de53b9e3562337cc1faf6a679b7f5f5814333ede3a527b09029ebe11271233c51a5e7b9885cebe95ea905e2bc5d858ff9ab7ea5d39b20f71460142786f44aa6d

Download Submit
memory/1240-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/1240-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1240-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/1240-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/1240-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2076-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2076-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2076-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2076-8-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2076-7-0x0000000000400000-0x0000000000C17000-memory.dmp

Filesize
8.1MB

Download
memory/2076-1-0x00000000002B0000-0x00000000003B0000-memory.dmp

Filesize
1024KB

Download
memory/2788-16-0x0000000000400000-0x0000000000C17000-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