tofsee | da858a7e80ed9cd7777e14c9e635069ffb35b991451f95b33076988a69294ee3

General

Target

bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe
Size

13.7MB
MD5

bd4b15d59a092096fe26478a1a798762
SHA1

33207cb49fbae9c537309a4894eaec056ae421b6
SHA256

da858a7e80ed9cd7777e14c9e635069ffb35b991451f95b33076988a69294ee3
SHA512

82665fc2a5450d7a2834a9d929d82e6eebfbddcb32db2dfa158f3dd7f6e497377d6f61818e288cda1434ac57ada7c3a2c767d959139439c5b4f9cbac25520d6e
SSDEEP

24576:vl3YWRibbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbX:

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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
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
1776	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\mzlhwshh\ImagePath = "C:\\Windows\\SysWOW64\\mzlhwshh\\ecqcdywc.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4964	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1124	ecqcdywc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1124 set thread context of 4964	1124	ecqcdywc.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
3116	sc.exe
3776	sc.exe
3620	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	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ecqcdywc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4456 wrote to memory of 2324	4456	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	82
PID 4456 wrote to memory of 2324	4456	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	82
PID 4456 wrote to memory of 2324	4456	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	82
PID 4456 wrote to memory of 4920	4456	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	84
PID 4456 wrote to memory of 4920	4456	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	84
PID 4456 wrote to memory of 4920	4456	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	84
PID 4456 wrote to memory of 3620	4456	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	86
PID 4456 wrote to memory of 3620	4456	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	86
PID 4456 wrote to memory of 3620	4456	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	86
PID 4456 wrote to memory of 3116	4456	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	88
PID 4456 wrote to memory of 3116	4456	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	88
PID 4456 wrote to memory of 3116	4456	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	88
PID 4456 wrote to memory of 3776	4456	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	90
PID 4456 wrote to memory of 3776	4456	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	90
PID 4456 wrote to memory of 3776	4456	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	90
PID 4456 wrote to memory of 1776	4456	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	93
PID 4456 wrote to memory of 1776	4456	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	93
PID 4456 wrote to memory of 1776	4456	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	93
PID 1124 wrote to memory of 4964	1124	ecqcdywc.exe	95
PID 1124 wrote to memory of 4964	1124	ecqcdywc.exe	95
PID 1124 wrote to memory of 4964	1124	ecqcdywc.exe	95
PID 1124 wrote to memory of 4964	1124	ecqcdywc.exe	95
PID 1124 wrote to memory of 4964	1124	ecqcdywc.exe	95

C:\Users\Admin\AppData\Local\Temp\bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4456
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mzlhwshh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2324
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ecqcdywc.exe" C:\Windows\SysWOW64\mzlhwshh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4920
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mzlhwshh binPath= "C:\Windows\SysWOW64\mzlhwshh\ecqcdywc.exe /d\"C:\Users\Admin\AppData\Local\Temp\bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3620
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mzlhwshh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3116
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mzlhwshh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3776
- 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:1776

C:\Windows\SysWOW64\mzlhwshh\ecqcdywc.exe
C:\Windows\SysWOW64\mzlhwshh\ecqcdywc.exe /d"C:\Users\Admin\AppData\Local\Temp\bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1124
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4964

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\ecqcdywc.exe

Filesize
14.8MB

MD5
f886d29f5d1b5f1c2c3ce9ec32e90132

SHA1
2346eeda32873b88f6289c1865614d8f7c713846

SHA256
6ad00a80dd58a77e7864b6bc99a14e905b193146491ab538e08049bfc9a8ce64

SHA512
38da48e1c7d1fa2053eb7bc1efc51f6b1670e3b0efb54671ec0d810313895d97b6bc6530f7d5fcff1527b83dbea898a3ea3595981e8efe3cf31e055bd6414dc8

Download Submit
memory/1124-7-0x0000000000580000-0x0000000000581000-memory.dmp

Filesize
4KB

Download
memory/1124-8-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1124-12-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/4456-0-0x0000000000690000-0x0000000000691000-memory.dmp

Filesize
4KB

Download
memory/4456-1-0x00000000006A0000-0x00000000006A1000-memory.dmp

Filesize
4KB

Download
memory/4456-2-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/4456-6-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/4964-9-0x0000000000FC0000-0x0000000000FD5000-memory.dmp

Filesize
84KB

Download
memory/4964-11-0x0000000000FC0000-0x0000000000FD5000-memory.dmp

Filesize
84KB

Download
memory/4964-13-0x0000000000FC0000-0x0000000000FD5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads