tofsee | e254728f6f9e3a2a0e2add68c71cb9901fc89e74518e9bfa5ff65505c217c41c

General

Target

fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe
Size

14.4MB
MD5

fc3952f3e3c67a63a838d5cbf390b675
SHA1

c27d62c6c6382a853603139bd5d179ad77c077b8
SHA256

e254728f6f9e3a2a0e2add68c71cb9901fc89e74518e9bfa5ff65505c217c41c
SHA512

c546ebe17819c78123abbaa198cd55f1d108585596cd1964f594f5dae6e0546d1defdabc76b0c9bea801ccc8de9a8ed2761b477afd3dd8f560a340d407c13708
SSDEEP

98304:Yjhd88888888888888888888888888888888888888888888888888888888888I:Y

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

176.111.174.19

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

4872 netsh.exe

pid	process
4872	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\ypovgrwo\ImagePath = "C:\\Windows\\SysWOW64\\ypovgrwo\\arhqwttw.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

Processes:

fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2620 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

arhqwttw.exe

pid process

3776 arhqwttw.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

arhqwttw.exe

description pid process target process

PID 3776 set thread context of 2620 3776 arhqwttw.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

1008 sc.exe
2372 sc.exe
3836 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

4924 428 WerFault.exe fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe
3188 3776 WerFault.exe arhqwttw.exe

pid	process
2620	svchost.exe

pid	process
3776	arhqwttw.exe

description	pid	process	target process
PID 3776 set thread context of 2620	3776	arhqwttw.exe	svchost.exe

pid	process
1008	sc.exe
2372	sc.exe
3836	sc.exe

pid	pid_target	process	target process
4924	428	WerFault.exe	fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe
3188	3776	WerFault.exe	arhqwttw.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exearhqwttw.exe

description	pid	process	target process
PID 428 wrote to memory of 2716	428	fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe	cmd.exe
PID 428 wrote to memory of 2716	428	fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe	cmd.exe
PID 428 wrote to memory of 2716	428	fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe	cmd.exe
PID 428 wrote to memory of 4952	428	fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe	cmd.exe
PID 428 wrote to memory of 4952	428	fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe	cmd.exe
PID 428 wrote to memory of 4952	428	fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe	cmd.exe
PID 428 wrote to memory of 1008	428	fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe	sc.exe
PID 428 wrote to memory of 1008	428	fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe	sc.exe
PID 428 wrote to memory of 1008	428	fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe	sc.exe
PID 428 wrote to memory of 2372	428	fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe	sc.exe
PID 428 wrote to memory of 2372	428	fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe	sc.exe
PID 428 wrote to memory of 2372	428	fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe	sc.exe
PID 428 wrote to memory of 3836	428	fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe	sc.exe
PID 428 wrote to memory of 3836	428	fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe	sc.exe
PID 428 wrote to memory of 3836	428	fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe	sc.exe
PID 428 wrote to memory of 4872	428	fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe	netsh.exe
PID 428 wrote to memory of 4872	428	fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe	netsh.exe
PID 428 wrote to memory of 4872	428	fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe	netsh.exe
PID 3776 wrote to memory of 2620	3776	arhqwttw.exe	svchost.exe
PID 3776 wrote to memory of 2620	3776	arhqwttw.exe	svchost.exe
PID 3776 wrote to memory of 2620	3776	arhqwttw.exe	svchost.exe
PID 3776 wrote to memory of 2620	3776	arhqwttw.exe	svchost.exe
PID 3776 wrote to memory of 2620	3776	arhqwttw.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:428
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ypovgrwo\
  2⤵
  PID:2716
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\arhqwttw.exe" C:\Windows\SysWOW64\ypovgrwo\
  2⤵
  PID:4952
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ypovgrwo binPath= "C:\Windows\SysWOW64\ypovgrwo\arhqwttw.exe /d\"C:\Users\Admin\AppData\Local\Temp\fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:1008
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ypovgrwo "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2372
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ypovgrwo
  2⤵
  - Launches sc.exe
  PID:3836
- 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
  PID:4872
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 428 -s 1036
  2⤵
  - Program crash
  PID:4924

C:\Windows\SysWOW64\ypovgrwo\arhqwttw.exe
C:\Windows\SysWOW64\ypovgrwo\arhqwttw.exe /d"C:\Users\Admin\AppData\Local\Temp\fc3952f3e3c67a63a838d5cbf390b675_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3776
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:2620
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3776 -s 276
  2⤵
  - Program crash
  PID:3188

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 428 -ip 428
1⤵
PID:1860

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3776 -ip 3776
1⤵
PID:4248

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
13.1MB

MD5
f3eb3a9501e959d970ea691b4401ae9b

SHA1
029da3f6dfc3071290675b49c46ce74be609f748

SHA256
5382e98036dd2953f40c7810125c826e94a982823d785483723c8ff5778ba5a0

SHA512
771fa6b7ee9bbfb32f81a967d03924d83e12a2c9f0411d2f6e8da35b2381fc7f897a33b009d960db65f8a3a33193b5c69c189393bb59bf59c6c7b68c96ef283c

Download Submit
memory/428-1-0x0000000000590000-0x0000000000690000-memory.dmp

Filesize
1024KB

Download
memory/428-2-0x00000000021B0000-0x00000000021C3000-memory.dmp

Filesize
76KB

Download
memory/428-3-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/428-8-0x00000000021B0000-0x00000000021C3000-memory.dmp

Filesize
76KB

Download
memory/428-7-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2620-16-0x0000000000C70000-0x0000000000C85000-memory.dmp

Filesize
84KB

Download
memory/2620-12-0x0000000000C70000-0x0000000000C85000-memory.dmp

Filesize
84KB

Download
memory/2620-17-0x0000000000C70000-0x0000000000C85000-memory.dmp

Filesize
84KB

Download
memory/2620-19-0x0000000000C70000-0x0000000000C85000-memory.dmp

Filesize
84KB

Download
memory/3776-11-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3776-10-0x00000000005B0000-0x00000000006B0000-memory.dmp

Filesize
1024KB

Download
memory/3776-18-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads