tofsee | d56b0df7f0c477e3c35c615cc0a4a1d43d3869ce43b48bcf79a9a415aedbc60a

Analysis

max time kernel
145s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-12-2024 18:18

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General

Target

bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe
Size

10.7MB
MD5

bea00b0379c20b4acb5b72ddc0be12e1
SHA1

046dd1c76a1fcecba03ab6af167c2aa1bec79c9d
SHA256

d56b0df7f0c477e3c35c615cc0a4a1d43d3869ce43b48bcf79a9a415aedbc60a
SHA512

073cef7a55c8c8b87cd97bd598a273bc1d5541bc34806898569efbc5c77975bc19699aa4d0375fca40313e4b777cd1ccc0c8c3de0c414676ef15b8ea082e57f9
SSDEEP

6144:RPOE0xjG9DJs6XBy+UP29MX6TERERERERERERERERERERERERERERERERERERERl:k1xS9RdUe9MX6

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan upx

Malware Config

Extracted

Family

tofsee

43.231.4.7

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\cyhestmz = "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
2724	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\cyhestmz\ImagePath = "C:\\Windows\\SysWOW64\\cyhestmz\\jiwymjkc.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2804	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2732	jiwymjkc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2732 set thread context of 2804	2732	jiwymjkc.exe	41

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2384-1-0x0000000000400000-0x0000000004C5B000-memory.dmp	upx
behavioral1/files/0x000a000000012033-5.dat	upx

Launches sc.exe 3 IoCs

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

pid	Process
3064	sc.exe
2776	sc.exe
2096	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	svchost.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	jiwymjkc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.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 2384 wrote to memory of 2984	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	30
PID 2384 wrote to memory of 2984	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	30
PID 2384 wrote to memory of 2984	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	30
PID 2384 wrote to memory of 2984	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	30
PID 2384 wrote to memory of 2364	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	32
PID 2384 wrote to memory of 2364	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	32
PID 2384 wrote to memory of 2364	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	32
PID 2384 wrote to memory of 2364	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	32
PID 2384 wrote to memory of 3064	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	34
PID 2384 wrote to memory of 3064	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	34
PID 2384 wrote to memory of 3064	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	34
PID 2384 wrote to memory of 3064	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	34
PID 2384 wrote to memory of 2776	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	36
PID 2384 wrote to memory of 2776	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	36
PID 2384 wrote to memory of 2776	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	36
PID 2384 wrote to memory of 2776	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	36
PID 2384 wrote to memory of 2096	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	38
PID 2384 wrote to memory of 2096	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	38
PID 2384 wrote to memory of 2096	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	38
PID 2384 wrote to memory of 2096	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	38
PID 2732 wrote to memory of 2804	2732	jiwymjkc.exe	41
PID 2732 wrote to memory of 2804	2732	jiwymjkc.exe	41
PID 2732 wrote to memory of 2804	2732	jiwymjkc.exe	41
PID 2732 wrote to memory of 2804	2732	jiwymjkc.exe	41
PID 2732 wrote to memory of 2804	2732	jiwymjkc.exe	41
PID 2732 wrote to memory of 2804	2732	jiwymjkc.exe	41
PID 2384 wrote to memory of 2724	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	42
PID 2384 wrote to memory of 2724	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	42
PID 2384 wrote to memory of 2724	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	42
PID 2384 wrote to memory of 2724	2384	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	42

C:\Users\Admin\AppData\Local\Temp\bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2384
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cyhestmz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2984
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jiwymjkc.exe" C:\Windows\SysWOW64\cyhestmz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2364
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cyhestmz binPath= "C:\Windows\SysWOW64\cyhestmz\jiwymjkc.exe /d\"C:\Users\Admin\AppData\Local\Temp\bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3064
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cyhestmz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2776
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cyhestmz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2096
- 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:2724

C:\Windows\SysWOW64\cyhestmz\jiwymjkc.exe
C:\Windows\SysWOW64\cyhestmz\jiwymjkc.exe /d"C:\Users\Admin\AppData\Local\Temp\bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2732
- 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:2804

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\jiwymjkc.exe

Filesize
10.1MB

MD5
537feb6d02bfc14493b02b340502e0f0

SHA1
a4d568a04f4834b3478358484b7158cda1b5a526

SHA256
0a606e9ba5a8da4cd1c9aa1e1286e2a7514271952b1ec4fbe3eb701bc57361b2

SHA512
ca698a283c41ece1483637e8913efd21eb755d4895a0248fdec62a98c3f0e07fbe89545867d4fa087bcf08da7f7fb2f572079438499eabc6268b3139681cdd9d

Download Submit
memory/2384-14-0x0000000000400000-0x0000000004C5B000-memory.dmp

Filesize
72.4MB

Download
memory/2384-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2384-2-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/2384-4-0x0000000000400000-0x0000000004C5B000-memory.dmp

Filesize
72.4MB

Download
memory/2384-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2384-1-0x0000000000400000-0x0000000004C5B000-memory.dmp

Filesize
72.4MB

Download
memory/2732-12-0x0000000000400000-0x0000000004C5B000-memory.dmp

Filesize
72.4MB

Download
memory/2804-8-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2804-10-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2804-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2804-16-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2804-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads