tofsee | 1c080453192d6860817dfd3f7d55054a384f0c5b51661212f38adcb0c6f612bf

General

Target

f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe
Size

10.5MB
MD5

f31ff6f68ebe392291dbb6214ea9ff92
SHA1

8502e236e8ae0ff89bff5c17e3697f1e3be2861f
SHA256

1c080453192d6860817dfd3f7d55054a384f0c5b51661212f38adcb0c6f612bf
SHA512

680b1e606ace8a65b4fc5480f16ad50c2636981f08faa25df5237e61c2de2ae130969ab363fc201e4bf3be8cd7d5457be31a0d5cdcfbd125ecf4812f6eb9ed91
SSDEEP

49152:S1yvllllllllllllllllllllllllllllllllllllllllllllllllllllllllllln:SA

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

1696 netsh.exe

pid	process
1696	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\felcyrca\ImagePath = "C:\\Windows\\SysWOW64\\felcyrca\\mhldtege.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:

f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-553605503-2331009851-2137262461-1000\Control Panel\International\Geo\Nation	f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4896 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

mhldtege.exe

pid process

4596 mhldtege.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

mhldtege.exe

description pid process target process

PID 4596 set thread context of 4896 4596 mhldtege.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

1548 sc.exe
2692 sc.exe
4780 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

3576 3440 WerFault.exe f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe
3504 4596 WerFault.exe mhldtege.exe

pid	process
4896	svchost.exe

pid	process
4596	mhldtege.exe

description	pid	process	target process
PID 4596 set thread context of 4896	4596	mhldtege.exe	svchost.exe

pid	process
1548	sc.exe
2692	sc.exe
4780	sc.exe

pid	pid_target	process	target process
3576	3440	WerFault.exe	f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe
3504	4596	WerFault.exe	mhldtege.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exemhldtege.exe

description	pid	process	target process
PID 3440 wrote to memory of 2156	3440	f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe	cmd.exe
PID 3440 wrote to memory of 2156	3440	f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe	cmd.exe
PID 3440 wrote to memory of 2156	3440	f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe	cmd.exe
PID 3440 wrote to memory of 1940	3440	f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe	cmd.exe
PID 3440 wrote to memory of 1940	3440	f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe	cmd.exe
PID 3440 wrote to memory of 1940	3440	f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe	cmd.exe
PID 3440 wrote to memory of 1548	3440	f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe	sc.exe
PID 3440 wrote to memory of 1548	3440	f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe	sc.exe
PID 3440 wrote to memory of 1548	3440	f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe	sc.exe
PID 3440 wrote to memory of 2692	3440	f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe	sc.exe
PID 3440 wrote to memory of 2692	3440	f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe	sc.exe
PID 3440 wrote to memory of 2692	3440	f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe	sc.exe
PID 3440 wrote to memory of 4780	3440	f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe	sc.exe
PID 3440 wrote to memory of 4780	3440	f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe	sc.exe
PID 3440 wrote to memory of 4780	3440	f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe	sc.exe
PID 3440 wrote to memory of 1696	3440	f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe	netsh.exe
PID 3440 wrote to memory of 1696	3440	f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe	netsh.exe
PID 3440 wrote to memory of 1696	3440	f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe	netsh.exe
PID 4596 wrote to memory of 4896	4596	mhldtege.exe	svchost.exe
PID 4596 wrote to memory of 4896	4596	mhldtege.exe	svchost.exe
PID 4596 wrote to memory of 4896	4596	mhldtege.exe	svchost.exe
PID 4596 wrote to memory of 4896	4596	mhldtege.exe	svchost.exe
PID 4596 wrote to memory of 4896	4596	mhldtege.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3440

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\felcyrca\
2⤵
PID:2156

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mhldtege.exe" C:\Windows\SysWOW64\felcyrca\
2⤵
PID:1940

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create felcyrca binPath= "C:\Windows\SysWOW64\felcyrca\mhldtege.exe /d\"C:\Users\Admin\AppData\Local\Temp\f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1548

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description felcyrca "wifi internet conection"
2⤵
- Launches sc.exe
PID:2692

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start felcyrca
2⤵
- Launches sc.exe
PID:4780

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:1696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3440 -s 1036
2⤵
- Program crash
PID:3576

C:\Windows\SysWOW64\felcyrca\mhldtege.exe
C:\Windows\SysWOW64\felcyrca\mhldtege.exe /d"C:\Users\Admin\AppData\Local\Temp\f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4596

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:4896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4596 -s 512
2⤵
- Program crash
PID:3504

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3440 -ip 3440
1⤵
PID:2008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4596 -ip 4596
1⤵
PID:3872

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\mhldtege.exe
Filesize
14.6MB

MD5
0192a08271aa324f4997e49bc0d602ba

SHA1
bcbc77b7ec8121b73fc7cf62a9ecc526228e0380

SHA256
249930b85e0f9ea7ed7e1c4179b537da596f6fb39586f7ea50635d48844895f3

SHA512
e3828550d6d4de085d8b6c58acf910752be643abf476425321638f38a1fd99504ab5c97939b8e31f4a1a246866a6ca3862d3e0d863544503efae06b6f4ce824c

Download Submit
memory/3440-1-0x0000000000D30000-0x0000000000E30000-memory.dmp

Filesize
1024KB

Download
memory/3440-2-0x0000000002820000-0x0000000002833000-memory.dmp

Filesize
76KB

Download
memory/3440-4-0x0000000000400000-0x0000000000C20000-memory.dmp

Filesize
8.1MB

Download
memory/3440-7-0x0000000000400000-0x0000000000C20000-memory.dmp

Filesize
8.1MB

Download
memory/3440-8-0x0000000002820000-0x0000000002833000-memory.dmp

Filesize
76KB

Download
memory/4596-10-0x0000000000EB0000-0x0000000000FB0000-memory.dmp

Filesize
1024KB

Download
memory/4596-11-0x0000000000400000-0x0000000000C20000-memory.dmp

Filesize
8.1MB

Download
memory/4596-16-0x0000000000400000-0x0000000000C20000-memory.dmp

Filesize
8.1MB

Download
memory/4896-12-0x0000000000E10000-0x0000000000E25000-memory.dmp

Filesize
84KB

Download
memory/4896-15-0x0000000000E10000-0x0000000000E25000-memory.dmp

Filesize
84KB

Download
memory/4896-17-0x0000000000E10000-0x0000000000E25000-memory.dmp

Filesize
84KB

Download
memory/4896-18-0x0000000000E10000-0x0000000000E25000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads