tofsee | 395523cf56f7bb9497764d72ed71bab457bc86cd338e46ee4efe470777c6670c

General

Target

fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe
Size

142KB
MD5

fb665d4a9976f7a8d7d53b4ee8d3a3fd
SHA1

b2bcda3ea607a76f1f96d7b464bcec2950bc3da4
SHA256

395523cf56f7bb9497764d72ed71bab457bc86cd338e46ee4efe470777c6670c
SHA512

78bcc6ac3db476f1bb330c3bbf0fd18306d184c1b2ca189aa20bbd5dd0728a824f475141375ccb194aac76aefde1afc6dcfc0d34e348d8bc415f86dcf4f55ad7
SSDEEP

3072:3O8/FLfg+6rzTkYfiL2+jKfgi4m5nuGFU6W6WNE6b37:F9wzwFLnKP46uC

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\btsqiaus = "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

Processes:

netsh.exe

pid process

2632 netsh.exe

pid	process
2632	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\btsqiaus\ImagePath = "C:\\Windows\\SysWOW64\\btsqiaus\\zxlxytrx.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

3052 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

zxlxytrx.exe

pid process

2588 zxlxytrx.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

zxlxytrx.exe

description pid process target process

PID 2588 set thread context of 3052 2588 zxlxytrx.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2816 sc.exe
2604 sc.exe
2560 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3052	svchost.exe

pid	process
2588	zxlxytrx.exe

description	pid	process	target process
PID 2588 set thread context of 3052	2588	zxlxytrx.exe	svchost.exe

pid	process
2816	sc.exe
2604	sc.exe
2560	sc.exe

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

Processes:

netsh.exe

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

Processes:

zxlxytrx.exenetsh.exefb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.execmd.exesc.exesc.execmd.exesc.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zxlxytrx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fb665d4a9976f7a8d7d53b4ee8d3a3fd_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	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exezxlxytrx.exe

description	pid	process	target process
PID 2756 wrote to memory of 2700	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	cmd.exe
PID 2756 wrote to memory of 2700	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	cmd.exe
PID 2756 wrote to memory of 2700	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	cmd.exe
PID 2756 wrote to memory of 2700	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	cmd.exe
PID 2756 wrote to memory of 780	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	cmd.exe
PID 2756 wrote to memory of 780	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	cmd.exe
PID 2756 wrote to memory of 780	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	cmd.exe
PID 2756 wrote to memory of 780	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	cmd.exe
PID 2756 wrote to memory of 2816	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	sc.exe
PID 2756 wrote to memory of 2816	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	sc.exe
PID 2756 wrote to memory of 2816	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	sc.exe
PID 2756 wrote to memory of 2816	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	sc.exe
PID 2756 wrote to memory of 2604	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	sc.exe
PID 2756 wrote to memory of 2604	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	sc.exe
PID 2756 wrote to memory of 2604	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	sc.exe
PID 2756 wrote to memory of 2604	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	sc.exe
PID 2756 wrote to memory of 2560	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	sc.exe
PID 2756 wrote to memory of 2560	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	sc.exe
PID 2756 wrote to memory of 2560	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	sc.exe
PID 2756 wrote to memory of 2560	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	sc.exe
PID 2756 wrote to memory of 2632	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	netsh.exe
PID 2756 wrote to memory of 2632	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	netsh.exe
PID 2756 wrote to memory of 2632	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	netsh.exe
PID 2756 wrote to memory of 2632	2756	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	netsh.exe
PID 2588 wrote to memory of 3052	2588	zxlxytrx.exe	svchost.exe
PID 2588 wrote to memory of 3052	2588	zxlxytrx.exe	svchost.exe
PID 2588 wrote to memory of 3052	2588	zxlxytrx.exe	svchost.exe
PID 2588 wrote to memory of 3052	2588	zxlxytrx.exe	svchost.exe
PID 2588 wrote to memory of 3052	2588	zxlxytrx.exe	svchost.exe
PID 2588 wrote to memory of 3052	2588	zxlxytrx.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2756
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\btsqiaus\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2700
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zxlxytrx.exe" C:\Windows\SysWOW64\btsqiaus\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:780
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create btsqiaus binPath= "C:\Windows\SysWOW64\btsqiaus\zxlxytrx.exe /d\"C:\Users\Admin\AppData\Local\Temp\fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description btsqiaus "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2604
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start btsqiaus
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2560
- 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:2632

C:\Windows\SysWOW64\btsqiaus\zxlxytrx.exe
C:\Windows\SysWOW64\btsqiaus\zxlxytrx.exe /d"C:\Users\Admin\AppData\Local\Temp\fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2588
- 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:3052

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

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

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\zxlxytrx.exe

Filesize
14.7MB

MD5
dd381fdf4ee02250ebe327bef24e0d30

SHA1
220de71c7dc6cdcc0bd49c871b71b02acf272474

SHA256
f3e6449b93329caf1dc1ebcd480e3aa8964ec05de5b280e0b765b88865c32f45

SHA512
8edcfe5d78f3a179728f7b34bf9069c4006649f0e508ad71f3737f508649f91f14eef4599a3d9b75a3e0035ed58ff947e2453af75aadd7fae336e5db3ed684db

Download Submit
memory/2588-7-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2588-14-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2756-0-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2756-1-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/2756-2-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2756-6-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3052-13-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/3052-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/3052-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3052-8-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/3052-15-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads