tofsee | 683fa1172ed26a953994f43177ceff28ee665a14736e73fc6f91f9fe330545a0

General

Target

f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe
Size

12.9MB
MD5

f4c26a587ceedc4e1f881db4635d2e46
SHA1

222207a71d9e9e3eb534b4fdbd644e848f1c24e0
SHA256

683fa1172ed26a953994f43177ceff28ee665a14736e73fc6f91f9fe330545a0
SHA512

722be7f412946c0b4a29b611afea11f0d5ca8b4d3263904299a2102a7a58dd1cb5a115f56a298820ade78b89c229e372189648db33de1cd2c13a8b09cc2a2463
SSDEEP

196608:vV8YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY/:

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

1048 netsh.exe

pid	process
1048	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\wtxktimt\ImagePath = "C:\\Windows\\SysWOW64\\wtxktimt\\xhcxoohn.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:

f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1826666146-2574340311-1877551059-1000\Control Panel\International\Geo\Nation	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2320 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

xhcxoohn.exe

pid process

2708 xhcxoohn.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

xhcxoohn.exe

description pid process target process

PID 2708 set thread context of 2320 2708 xhcxoohn.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

3528 sc.exe
4908 sc.exe
3044 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

1444 3220 WerFault.exe f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe
3980 2708 WerFault.exe xhcxoohn.exe

pid	process
2320	svchost.exe

pid	process
2708	xhcxoohn.exe

description	pid	process	target process
PID 2708 set thread context of 2320	2708	xhcxoohn.exe	svchost.exe

pid	process
3528	sc.exe
4908	sc.exe
3044	sc.exe

pid	pid_target	process	target process
1444	3220	WerFault.exe	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe
3980	2708	WerFault.exe	xhcxoohn.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exexhcxoohn.exe

description	pid	process	target process
PID 3220 wrote to memory of 4328	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	cmd.exe
PID 3220 wrote to memory of 4328	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	cmd.exe
PID 3220 wrote to memory of 4328	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	cmd.exe
PID 3220 wrote to memory of 1208	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	cmd.exe
PID 3220 wrote to memory of 1208	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	cmd.exe
PID 3220 wrote to memory of 1208	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	cmd.exe
PID 3220 wrote to memory of 3044	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	sc.exe
PID 3220 wrote to memory of 3044	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	sc.exe
PID 3220 wrote to memory of 3044	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	sc.exe
PID 3220 wrote to memory of 3528	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	sc.exe
PID 3220 wrote to memory of 3528	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	sc.exe
PID 3220 wrote to memory of 3528	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	sc.exe
PID 3220 wrote to memory of 4908	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	sc.exe
PID 3220 wrote to memory of 4908	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	sc.exe
PID 3220 wrote to memory of 4908	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	sc.exe
PID 3220 wrote to memory of 1048	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	netsh.exe
PID 3220 wrote to memory of 1048	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	netsh.exe
PID 3220 wrote to memory of 1048	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	netsh.exe
PID 2708 wrote to memory of 2320	2708	xhcxoohn.exe	svchost.exe
PID 2708 wrote to memory of 2320	2708	xhcxoohn.exe	svchost.exe
PID 2708 wrote to memory of 2320	2708	xhcxoohn.exe	svchost.exe
PID 2708 wrote to memory of 2320	2708	xhcxoohn.exe	svchost.exe
PID 2708 wrote to memory of 2320	2708	xhcxoohn.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3220

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wtxktimt\
2⤵
PID:4328

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xhcxoohn.exe" C:\Windows\SysWOW64\wtxktimt\
2⤵
PID:1208

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create wtxktimt binPath= "C:\Windows\SysWOW64\wtxktimt\xhcxoohn.exe /d\"C:\Users\Admin\AppData\Local\Temp\f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:3044

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description wtxktimt "wifi internet conection"
2⤵
- Launches sc.exe
PID:3528

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start wtxktimt
2⤵
- Launches sc.exe
PID:4908

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:1048

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3220 -s 1224
2⤵
- Program crash
PID:1444

C:\Windows\SysWOW64\wtxktimt\xhcxoohn.exe
C:\Windows\SysWOW64\wtxktimt\xhcxoohn.exe /d"C:\Users\Admin\AppData\Local\Temp\f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2708

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:2320

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2708 -s 520
2⤵
- Program crash
PID:3980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3220 -ip 3220
1⤵
PID:4728

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2708 -ip 2708
1⤵
PID:3840

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\xhcxoohn.exe
Filesize
11.2MB

MD5
f3aebf052bf1c10555f6095b849d2d8a

SHA1
8aa5d1ed81ee89beca5c5b9bcfb3d94ff690632e

SHA256
5d2b094f54e6b8429da8a49801875bb7ebf8d9dcd903c00b8f093115462f39e9

SHA512
abda6250753ab3a5288ae2f59c34e928a215b7bf387d30d4fb3cd21bcb9367f3e7d1364109a37324377e4116294b2d3dbf527502988458ceb478339cb4e35fe7

Download Submit
memory/2320-16-0x0000000000A70000-0x0000000000A85000-memory.dmp

Filesize
84KB

Download
memory/2320-11-0x0000000000A70000-0x0000000000A85000-memory.dmp

Filesize
84KB

Download
memory/2320-18-0x0000000000A70000-0x0000000000A85000-memory.dmp

Filesize
84KB

Download
memory/2320-19-0x0000000000A70000-0x0000000000A85000-memory.dmp

Filesize
84KB

Download
memory/2708-10-0x0000000000BF0000-0x0000000000CF0000-memory.dmp

Filesize
1024KB

Download
memory/2708-12-0x0000000000400000-0x00000000008EA000-memory.dmp

Filesize
4.9MB

Download
memory/2708-17-0x0000000000400000-0x00000000008EA000-memory.dmp

Filesize
4.9MB

Download
memory/3220-4-0x0000000000400000-0x00000000008EA000-memory.dmp

Filesize
4.9MB

Download
memory/3220-2-0x0000000002630000-0x0000000002643000-memory.dmp

Filesize
76KB

Download
memory/3220-7-0x0000000000400000-0x00000000008EA000-memory.dmp

Filesize
4.9MB

Download
memory/3220-8-0x0000000002630000-0x0000000002643000-memory.dmp

Filesize
76KB

Download
memory/3220-1-0x0000000000A00000-0x0000000000B00000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads