tofsee | 3d75c4f3de4c59779cd84d9b938445948a257b5dbe6d291ce64b98d7e0b5e80d

General

Target

f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe
Size

11.5MB
MD5

f82fcc6b28d0ae7b42e6a6a123913719
SHA1

ca5b8c2a36e2baa53082673f78f65b402182d2bd
SHA256

3d75c4f3de4c59779cd84d9b938445948a257b5dbe6d291ce64b98d7e0b5e80d
SHA512

109cb309682d2761bb7d03a2a52718d83f4cc8d437c33dcda17a055c41e5b798057dc63bf3095c4652d0027e7d08d3fbcbfa6aa366dac308cc8926be08e9b4d7
SSDEEP

49152:i3SkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkE:i3

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

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

1056 netsh.exe

pid	process
1056	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\acczbyfy\ImagePath = "C:\\Windows\\SysWOW64\\acczbyfy\\ncgkanee.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:

f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

5108 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

ncgkanee.exe

pid process

388 ncgkanee.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ncgkanee.exe

description pid process target process

PID 388 set thread context of 5108 388 ncgkanee.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

3496 sc.exe
516 sc.exe
2376 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

3340 4004 WerFault.exe f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe
880 388 WerFault.exe ncgkanee.exe

pid	process
5108	svchost.exe

pid	process
388	ncgkanee.exe

description	pid	process	target process
PID 388 set thread context of 5108	388	ncgkanee.exe	svchost.exe

pid	process
3496	sc.exe
516	sc.exe
2376	sc.exe

pid	pid_target	process	target process
3340	4004	WerFault.exe	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe
880	388	WerFault.exe	ncgkanee.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exencgkanee.exe

description	pid	process	target process
PID 4004 wrote to memory of 4388	4004	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	cmd.exe
PID 4004 wrote to memory of 4388	4004	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	cmd.exe
PID 4004 wrote to memory of 4388	4004	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	cmd.exe
PID 4004 wrote to memory of 2504	4004	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	cmd.exe
PID 4004 wrote to memory of 2504	4004	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	cmd.exe
PID 4004 wrote to memory of 2504	4004	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	cmd.exe
PID 4004 wrote to memory of 3496	4004	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	sc.exe
PID 4004 wrote to memory of 3496	4004	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	sc.exe
PID 4004 wrote to memory of 3496	4004	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	sc.exe
PID 4004 wrote to memory of 516	4004	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	sc.exe
PID 4004 wrote to memory of 516	4004	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	sc.exe
PID 4004 wrote to memory of 516	4004	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	sc.exe
PID 4004 wrote to memory of 2376	4004	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	sc.exe
PID 4004 wrote to memory of 2376	4004	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	sc.exe
PID 4004 wrote to memory of 2376	4004	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	sc.exe
PID 4004 wrote to memory of 1056	4004	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	netsh.exe
PID 4004 wrote to memory of 1056	4004	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	netsh.exe
PID 4004 wrote to memory of 1056	4004	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	netsh.exe
PID 388 wrote to memory of 5108	388	ncgkanee.exe	svchost.exe
PID 388 wrote to memory of 5108	388	ncgkanee.exe	svchost.exe
PID 388 wrote to memory of 5108	388	ncgkanee.exe	svchost.exe
PID 388 wrote to memory of 5108	388	ncgkanee.exe	svchost.exe
PID 388 wrote to memory of 5108	388	ncgkanee.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4004

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\acczbyfy\
2⤵
PID:4388

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ncgkanee.exe" C:\Windows\SysWOW64\acczbyfy\
2⤵
PID:2504

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create acczbyfy binPath= "C:\Windows\SysWOW64\acczbyfy\ncgkanee.exe /d\"C:\Users\Admin\AppData\Local\Temp\f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:3496

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description acczbyfy "wifi internet conection"
2⤵
- Launches sc.exe
PID:516

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start acczbyfy
2⤵
- Launches sc.exe
PID:2376

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:1056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4004 -s 892
2⤵
- Program crash
PID:3340

C:\Windows\SysWOW64\acczbyfy\ncgkanee.exe
C:\Windows\SysWOW64\acczbyfy\ncgkanee.exe /d"C:\Users\Admin\AppData\Local\Temp\f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:388

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:5108

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 388 -s 536
2⤵
- Program crash
PID:880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4004 -ip 4004
1⤵
PID:3880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 388 -ip 388
1⤵
PID:5036

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\ncgkanee.exe
Filesize
13.4MB

MD5
d890c17f99472715ee9357f54dc7bf00

SHA1
f7fb4a9721e6524ab9cdc92fabc65e1f4e942ee8

SHA256
326a92803b0b74215a11eba90390d0e32d36bb44789e73d026b3378209c6a1e7

SHA512
ad67c35b09c8f3ac56e8705993142b34f7c9910aca443ac0b2823723949f988cac38f9aec657befd612416b9a522f353e929292ba0475af0776b4349fd47522f

Download Submit
memory/388-10-0x0000000000DD0000-0x0000000000ED0000-memory.dmp

Filesize
1024KB

Download
memory/388-12-0x0000000000400000-0x0000000000C14000-memory.dmp

Filesize
8.1MB

Download
memory/388-17-0x0000000000400000-0x0000000000C14000-memory.dmp

Filesize
8.1MB

Download
memory/4004-4-0x0000000000400000-0x0000000000C14000-memory.dmp

Filesize
8.1MB

Download
memory/4004-2-0x0000000002960000-0x0000000002973000-memory.dmp

Filesize
76KB

Download
memory/4004-7-0x0000000000400000-0x0000000000C14000-memory.dmp

Filesize
8.1MB

Download
memory/4004-8-0x0000000002960000-0x0000000002973000-memory.dmp

Filesize
76KB

Download
memory/4004-1-0x0000000000DC0000-0x0000000000EC0000-memory.dmp

Filesize
1024KB

Download
memory/5108-11-0x00000000009E0000-0x00000000009F5000-memory.dmp

Filesize
84KB

Download
memory/5108-16-0x00000000009E0000-0x00000000009F5000-memory.dmp

Filesize
84KB

Download
memory/5108-15-0x00000000009E0000-0x00000000009F5000-memory.dmp

Filesize
84KB

Download
memory/5108-18-0x00000000009E0000-0x00000000009F5000-memory.dmp

Filesize
84KB

Download
memory/5108-19-0x00000000009E0000-0x00000000009F5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads