tofsee | f8546b64a0638ffe8267be96d09cf4790b9a89b1719b105cd99fd84e554a04da

Analysis

max time kernel
145s
max time network
121s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
02-10-2024 23:55

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General

Target

0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe
Size

12.3MB
MD5

0cfc8367505b43f71a3e388531f840ad
SHA1

666f8624dd821294c0b212f430b8a1a676b55914
SHA256

f8546b64a0638ffe8267be96d09cf4790b9a89b1719b105cd99fd84e554a04da
SHA512

daeb6fd6456767b77a97cfce33b9d411f77ae4259883e338caf83e329119f830132e49f30704593afbcd574b3575d5cceb299a446ea04d0cad94f89aaecaa110
SSDEEP

49152:E9Yfn2sTQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQT:eYP2s

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

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

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\ukbbpvjh = "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
2132	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\ukbbpvjh\ImagePath = "C:\\Windows\\SysWOW64\\ukbbpvjh\\zvnnkzym.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2756	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2824	zvnnkzym.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2824 set thread context of 2756	2824	zvnnkzym.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
1836	sc.exe
2052	sc.exe
2708	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	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	zvnnkzym.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1252 wrote to memory of 1276	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	30
PID 1252 wrote to memory of 1276	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	30
PID 1252 wrote to memory of 1276	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	30
PID 1252 wrote to memory of 1276	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	30
PID 1252 wrote to memory of 1268	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	32
PID 1252 wrote to memory of 1268	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	32
PID 1252 wrote to memory of 1268	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	32
PID 1252 wrote to memory of 1268	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	32
PID 1252 wrote to memory of 1836	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	34
PID 1252 wrote to memory of 1836	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	34
PID 1252 wrote to memory of 1836	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	34
PID 1252 wrote to memory of 1836	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	34
PID 1252 wrote to memory of 2052	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	36
PID 1252 wrote to memory of 2052	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	36
PID 1252 wrote to memory of 2052	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	36
PID 1252 wrote to memory of 2052	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	36
PID 1252 wrote to memory of 2708	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	38
PID 1252 wrote to memory of 2708	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	38
PID 1252 wrote to memory of 2708	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	38
PID 1252 wrote to memory of 2708	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	38
PID 2824 wrote to memory of 2756	2824	zvnnkzym.exe	41
PID 2824 wrote to memory of 2756	2824	zvnnkzym.exe	41
PID 2824 wrote to memory of 2756	2824	zvnnkzym.exe	41
PID 2824 wrote to memory of 2756	2824	zvnnkzym.exe	41
PID 2824 wrote to memory of 2756	2824	zvnnkzym.exe	41
PID 2824 wrote to memory of 2756	2824	zvnnkzym.exe	41
PID 1252 wrote to memory of 2132	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	42
PID 1252 wrote to memory of 2132	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	42
PID 1252 wrote to memory of 2132	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	42
PID 1252 wrote to memory of 2132	1252	0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe	42

C:\Users\Admin\AppData\Local\Temp\0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1252
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ukbbpvjh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1276
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zvnnkzym.exe" C:\Windows\SysWOW64\ukbbpvjh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1268
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ukbbpvjh binPath= "C:\Windows\SysWOW64\ukbbpvjh\zvnnkzym.exe /d\"C:\Users\Admin\AppData\Local\Temp\0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1836
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ukbbpvjh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2052
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ukbbpvjh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2708
- 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:2132

C:\Windows\SysWOW64\ukbbpvjh\zvnnkzym.exe
C:\Windows\SysWOW64\ukbbpvjh\zvnnkzym.exe /d"C:\Users\Admin\AppData\Local\Temp\0cfc8367505b43f71a3e388531f840ad_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2824
- 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:2756

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\zvnnkzym.exe

Filesize
14.0MB

MD5
9e51604686a01bd79e0ccd9c2af00434

SHA1
9e3d15cc4792112e7667a9f59d6dde974c5cadb4

SHA256
ac3905d11948da8df51546cb4c44eec285d1e28a040df8883bc580ac13068af1

SHA512
d993be33a45d01a398c3523edc121b5a0e9f5b5f39c5141df9710ff24df8580c5c71db61bb062cf466c92f1c59beb0b7394093eaf4bde123f05f4a1fe67ec7e4

Download Submit
memory/1252-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1252-1-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download
memory/1252-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1252-16-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download
memory/1252-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1252-14-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2756-8-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2756-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2756-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2756-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2756-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2824-13-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads