tofsee | fe7eb1248703a1dad025d2a6095acc77e8b3731cf282ac652a0b6d490ea0832f

General

Target

fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe
Size

14.6MB
MD5

fc9d27ffa867f7f49dee1251dae0344e
SHA1

442c6b101cc68df05cafe8503d4b24647dfe980f
SHA256

fe7eb1248703a1dad025d2a6095acc77e8b3731cf282ac652a0b6d490ea0832f
SHA512

d1fe29b5fe0d2ffa19ecd9641086954df472bd7876ecdf14cbf84f0b3f8365985adddcdc927fa81ce160d7de67ac3216d05b8b8542cfa52b4978073342e9fcd1
SSDEEP

49152:wjrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrX:S

Score

10^/10

tofsee evasion persistence 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
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

972 netsh.exe

pid	process
972	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\xnbdpeiv\ImagePath = "C:\\Windows\\SysWOW64\\xnbdpeiv\\eauagiar.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:

fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4276 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

eauagiar.exe

pid process

4572 eauagiar.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

eauagiar.exe

description pid process target process

PID 4572 set thread context of 4276 4572 eauagiar.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

4156 sc.exe
3212 sc.exe
1224 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4276	svchost.exe

pid	process
4572	eauagiar.exe

description	pid	process	target process
PID 4572 set thread context of 4276	4572	eauagiar.exe	svchost.exe

pid	process
4156	sc.exe
3212	sc.exe
1224	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exeeauagiar.exe

description	pid	process	target process
PID 4704 wrote to memory of 5060	4704	fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe	cmd.exe
PID 4704 wrote to memory of 5060	4704	fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe	cmd.exe
PID 4704 wrote to memory of 5060	4704	fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe	cmd.exe
PID 4704 wrote to memory of 3508	4704	fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe	cmd.exe
PID 4704 wrote to memory of 3508	4704	fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe	cmd.exe
PID 4704 wrote to memory of 3508	4704	fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe	cmd.exe
PID 4704 wrote to memory of 1224	4704	fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe	sc.exe
PID 4704 wrote to memory of 1224	4704	fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe	sc.exe
PID 4704 wrote to memory of 1224	4704	fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe	sc.exe
PID 4704 wrote to memory of 4156	4704	fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe	sc.exe
PID 4704 wrote to memory of 4156	4704	fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe	sc.exe
PID 4704 wrote to memory of 4156	4704	fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe	sc.exe
PID 4704 wrote to memory of 3212	4704	fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe	sc.exe
PID 4704 wrote to memory of 3212	4704	fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe	sc.exe
PID 4704 wrote to memory of 3212	4704	fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe	sc.exe
PID 4572 wrote to memory of 4276	4572	eauagiar.exe	svchost.exe
PID 4572 wrote to memory of 4276	4572	eauagiar.exe	svchost.exe
PID 4572 wrote to memory of 4276	4572	eauagiar.exe	svchost.exe
PID 4572 wrote to memory of 4276	4572	eauagiar.exe	svchost.exe
PID 4572 wrote to memory of 4276	4572	eauagiar.exe	svchost.exe
PID 4704 wrote to memory of 972	4704	fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe	netsh.exe
PID 4704 wrote to memory of 972	4704	fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe	netsh.exe
PID 4704 wrote to memory of 972	4704	fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4704

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xnbdpeiv\
2⤵
PID:5060

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\eauagiar.exe" C:\Windows\SysWOW64\xnbdpeiv\
2⤵
PID:3508

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create xnbdpeiv binPath= "C:\Windows\SysWOW64\xnbdpeiv\eauagiar.exe /d\"C:\Users\Admin\AppData\Local\Temp\fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1224

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description xnbdpeiv "wifi internet conection"
2⤵
- Launches sc.exe
PID:4156

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start xnbdpeiv
2⤵
- Launches sc.exe
PID:3212

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:972

C:\Windows\SysWOW64\xnbdpeiv\eauagiar.exe
C:\Windows\SysWOW64\xnbdpeiv\eauagiar.exe /d"C:\Users\Admin\AppData\Local\Temp\fc9d27ffa867f7f49dee1251dae0344e_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4572

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:4276

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\eauagiar.exe
Filesize
10.8MB

MD5
7c52bd90f186874479d6125862bc0757

SHA1
a81318da4efffcbe24b2896b314cf92466336ee9

SHA256
e92bbb72c49c619fa839bd44de1f7a9a1c496075dd259b9a2809d7e18df0a6a1

SHA512
325e6aaf496e93ac3cb13dc01fac747774beae3455575659abc45956fbce438948837e7bf2a608e29b5a9f698cbd1d03391a001ef79fbe7814ecbe5853b2e6fe

Download Submit
memory/4276-10-0x00000000001C0000-0x00000000001D5000-memory.dmp

Filesize
84KB

Download
memory/4276-18-0x00000000001C0000-0x00000000001D5000-memory.dmp

Filesize
84KB

Download
memory/4276-17-0x00000000001C0000-0x00000000001D5000-memory.dmp

Filesize
84KB

Download
memory/4276-16-0x00000000001C0000-0x00000000001D5000-memory.dmp

Filesize
84KB

Download
memory/4276-14-0x00000000001C0000-0x00000000001D5000-memory.dmp

Filesize
84KB

Download
memory/4572-9-0x00000000004A0000-0x00000000004A1000-memory.dmp

Filesize
4KB

Download
memory/4572-12-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4572-7-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4704-0-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4704-15-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4704-3-0x00000000005C0000-0x00000000005C1000-memory.dmp

Filesize
4KB

Download
memory/4704-2-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4704-1-0x00000000005B0000-0x00000000005B1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads