tofsee | 425fd34fb1131f5b712ca4b861bac754a708071051a3ca3282a99eabff79a531

General

Target

f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe
Size

11.3MB
MD5

f26a8af7f9af71442c04f46b5bda6870
SHA1

f5c5d89ad5f1695d7a5fdd6a2e1f84889b46e582
SHA256

425fd34fb1131f5b712ca4b861bac754a708071051a3ca3282a99eabff79a531
SHA512

d352bf595f97c28a45186d81e20fcd4a7291e90b48b73adf268bfe1c9d979080458dee8c036c17666d31109a1e6eddef63e1cf41f653a270411013712b085762
SSDEEP

24576:YUqa71YB5DHlommmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmX:YF15

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

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

4716 netsh.exe

pid	process
4716	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

mvhnxsoe.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\ysctixop\ImagePath = "C:\\Windows\\SysWOW64\\ysctixop\\mvhnxsoe.exe"	mvhnxsoe.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:

f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4624 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

mvhnxsoe.exe

pid process

4916 mvhnxsoe.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

mvhnxsoe.exe

description pid process target process

PID 4916 set thread context of 4624 4916 mvhnxsoe.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

556 sc.exe
1268 sc.exe
4176 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

4576 4332 WerFault.exe f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe
3720 4916 WerFault.exe mvhnxsoe.exe

pid	process
4624	svchost.exe

pid	process
4916	mvhnxsoe.exe

description	pid	process	target process
PID 4916 set thread context of 4624	4916	mvhnxsoe.exe	svchost.exe

pid	process
556	sc.exe
1268	sc.exe
4176	sc.exe

pid	pid_target	process	target process
4576	4332	WerFault.exe	f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe
3720	4916	WerFault.exe	mvhnxsoe.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exemvhnxsoe.exe

description	pid	process	target process
PID 4332 wrote to memory of 484	4332	f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe	cmd.exe
PID 4332 wrote to memory of 484	4332	f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe	cmd.exe
PID 4332 wrote to memory of 484	4332	f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe	cmd.exe
PID 4332 wrote to memory of 2176	4332	f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe	cmd.exe
PID 4332 wrote to memory of 2176	4332	f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe	cmd.exe
PID 4332 wrote to memory of 2176	4332	f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe	cmd.exe
PID 4332 wrote to memory of 556	4332	f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe	sc.exe
PID 4332 wrote to memory of 556	4332	f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe	sc.exe
PID 4332 wrote to memory of 556	4332	f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe	sc.exe
PID 4332 wrote to memory of 1268	4332	f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe	sc.exe
PID 4332 wrote to memory of 1268	4332	f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe	sc.exe
PID 4332 wrote to memory of 1268	4332	f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe	sc.exe
PID 4332 wrote to memory of 4176	4332	f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe	sc.exe
PID 4332 wrote to memory of 4176	4332	f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe	sc.exe
PID 4332 wrote to memory of 4176	4332	f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe	sc.exe
PID 4332 wrote to memory of 4716	4332	f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe	netsh.exe
PID 4332 wrote to memory of 4716	4332	f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe	netsh.exe
PID 4332 wrote to memory of 4716	4332	f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe	netsh.exe
PID 4916 wrote to memory of 4624	4916	mvhnxsoe.exe	svchost.exe
PID 4916 wrote to memory of 4624	4916	mvhnxsoe.exe	svchost.exe
PID 4916 wrote to memory of 4624	4916	mvhnxsoe.exe	svchost.exe
PID 4916 wrote to memory of 4624	4916	mvhnxsoe.exe	svchost.exe
PID 4916 wrote to memory of 4624	4916	mvhnxsoe.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4332

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ysctixop\
2⤵
PID:484

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mvhnxsoe.exe" C:\Windows\SysWOW64\ysctixop\
2⤵
PID:2176

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create ysctixop binPath= "C:\Windows\SysWOW64\ysctixop\mvhnxsoe.exe /d\"C:\Users\Admin\AppData\Local\Temp\f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:556

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description ysctixop "wifi internet conection"
2⤵
- Launches sc.exe
PID:1268

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start ysctixop
2⤵
- Launches sc.exe
PID:4176

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:4716

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4332 -s 572
2⤵
- Program crash
PID:4576

C:\Windows\SysWOW64\ysctixop\mvhnxsoe.exe
C:\Windows\SysWOW64\ysctixop\mvhnxsoe.exe /d"C:\Users\Admin\AppData\Local\Temp\f26a8af7f9af71442c04f46b5bda6870_JaffaCakes118.exe"
1⤵
- Sets service image path in registry
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4916

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Deletes itself
PID:4624

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4916 -s 520
2⤵
- Program crash
PID:3720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 4332 -ip 4332
1⤵
PID:1612

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4916 -ip 4916
1⤵
PID:5016

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\mvhnxsoe.exe

Filesize
12.6MB

MD5
d989ea101ceca9aacd29688c888fbe69

SHA1
06ef89d876438c3acbe7cc9622ffc38493e1afdd

SHA256
d36bac7f5b804a88921b4ebad00989324635170f28d8cfcd5c437010e8b8d6fc

SHA512
5806db85c6632fd346ad075a22f29d8e1880bbaeb4546a6585370670701e705f07f3dd2ed15da52fdbf45d4083f222898bbd9a116f89a1dba817d92a30106711

Download Submit
memory/4332-1-0x00000000004E0000-0x00000000005E0000-memory.dmp

Filesize
1024KB

Download
memory/4332-2-0x00000000005F0000-0x0000000000603000-memory.dmp

Filesize
76KB

Download
memory/4332-3-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/4332-8-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/4332-9-0x00000000005F0000-0x0000000000603000-memory.dmp

Filesize
76KB

Download
memory/4624-15-0x0000000000670000-0x0000000000685000-memory.dmp

Filesize
84KB

Download
memory/4624-12-0x0000000000670000-0x0000000000685000-memory.dmp

Filesize
84KB

Download
memory/4624-16-0x0000000000670000-0x0000000000685000-memory.dmp

Filesize
84KB

Download
memory/4624-18-0x0000000000670000-0x0000000000685000-memory.dmp

Filesize
84KB

Download
memory/4916-11-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/4916-10-0x0000000000840000-0x0000000000940000-memory.dmp

Filesize
1024KB

Download
memory/4916-17-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads