tofsee | d56b0df7f0c477e3c35c615cc0a4a1d43d3869ce43b48bcf79a9a415aedbc60a

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

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
2948	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\jbdwahpf\ImagePath = "C:\\Windows\\SysWOW64\\jbdwahpf\\lhzzwlky.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
116	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1928	lhzzwlky.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1928 set thread context of 116	1928	lhzzwlky.exe	94

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1340-0-0x0000000000400000-0x0000000004C5B000-memory.dmp	upx
behavioral2/files/0x000c000000023b8c-5.dat	upx

Launches sc.exe 3 IoCs

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

pid	Process
3932	sc.exe
2544	sc.exe
3876	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1120	1928	WerFault.exe	92
216	1340	WerFault.exe	81

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	lhzzwlky.exe
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	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	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1340 wrote to memory of 2124	1340	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	82
PID 1340 wrote to memory of 2124	1340	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	82
PID 1340 wrote to memory of 2124	1340	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	82
PID 1340 wrote to memory of 4184	1340	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	84
PID 1340 wrote to memory of 4184	1340	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	84
PID 1340 wrote to memory of 4184	1340	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	84
PID 1340 wrote to memory of 3932	1340	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	86
PID 1340 wrote to memory of 3932	1340	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	86
PID 1340 wrote to memory of 3932	1340	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	86
PID 1340 wrote to memory of 2544	1340	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	88
PID 1340 wrote to memory of 2544	1340	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	88
PID 1340 wrote to memory of 2544	1340	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	88
PID 1340 wrote to memory of 3876	1340	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	90
PID 1340 wrote to memory of 3876	1340	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	90
PID 1340 wrote to memory of 3876	1340	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	90
PID 1340 wrote to memory of 2948	1340	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	93
PID 1340 wrote to memory of 2948	1340	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	93
PID 1340 wrote to memory of 2948	1340	bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe	93
PID 1928 wrote to memory of 116	1928	lhzzwlky.exe	94
PID 1928 wrote to memory of 116	1928	lhzzwlky.exe	94
PID 1928 wrote to memory of 116	1928	lhzzwlky.exe	94
PID 1928 wrote to memory of 116	1928	lhzzwlky.exe	94
PID 1928 wrote to memory of 116	1928	lhzzwlky.exe	94

C:\Users\Admin\AppData\Local\Temp\bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\bea00b0379c20b4acb5b72ddc0be12e1_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1340
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jbdwahpf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2124
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lhzzwlky.exe" C:\Windows\SysWOW64\jbdwahpf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4184
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jbdwahpf binPath= "C:\Windows\SysWOW64\jbdwahpf\lhzzwlky.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:3932
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jbdwahpf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2544
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jbdwahpf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3876
- 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:2948
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1340 -s 668
  2⤵
  - Program crash
  PID:216

C:\Windows\SysWOW64\jbdwahpf\lhzzwlky.exe
C:\Windows\SysWOW64\jbdwahpf\lhzzwlky.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:1928
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1928 -s 560
  2⤵
  - Program crash
  PID:1120

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1340 -ip 1340
1⤵
PID:3124

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1928 -ip 1928
1⤵
PID:3040

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\lhzzwlky.exe

Filesize
12.8MB

MD5
3245d2daa36628d854c839f48c0bc698

SHA1
e50077dbb7391d6a3877df497ae365758dcd3ae3

SHA256
9fe67e3b227cb9d0dbcfbe863d4fefab71f6e4d55074815b432e331aaeaa628f

SHA512
ad470609a10a9b0d50f07b57be7c4a631fbae0532400014372d75bdbbe8d19591742450ae4d62d153120c0851998f470a024446a37cccea67b1865d7a9821e61

Download Submit
memory/116-17-0x0000000000420000-0x0000000000435000-memory.dmp

Filesize
84KB

Download
memory/116-16-0x0000000000420000-0x0000000000435000-memory.dmp

Filesize
84KB

Download
memory/116-7-0x0000000000420000-0x0000000000435000-memory.dmp

Filesize
84KB

Download
memory/1340-9-0x0000000000400000-0x0000000004C5B000-memory.dmp

Filesize
72.4MB

Download
memory/1340-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1340-0-0x0000000000400000-0x0000000004C5B000-memory.dmp

Filesize
72.4MB

Download
memory/1340-10-0x00000000069C0000-0x00000000069D3000-memory.dmp

Filesize
76KB

Download
memory/1340-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1340-14-0x0000000000400000-0x0000000004C5B000-memory.dmp

Filesize
72.4MB

Download
memory/1340-2-0x0000000005380000-0x000000000538D000-memory.dmp

Filesize
52KB

Download
memory/1340-1-0x00000000069C0000-0x00000000069D3000-memory.dmp

Filesize
76KB

Download
memory/1928-12-0x0000000000400000-0x0000000004C5B000-memory.dmp

Filesize
72.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads