tofsee | 19d8923701cbffb8e0f7f3cb4772239bac595a314a444de6c3517f153b7beb12

General

Target

5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe
Size

285KB
MD5

5c9f165708d2048efede69f4f5a98d5c
SHA1

cc34508989b9b0f8ec666946157e5e1bb8c43b09
SHA256

19d8923701cbffb8e0f7f3cb4772239bac595a314a444de6c3517f153b7beb12
SHA512

3b37bf309c5d61cf14c120a47cd9e44697e66f5a2e8c3d6c790003ed8f7ac2ddec383c7dd52e3ca08060b9a7cadb55e8f49ff67f4ad1854a4761439c3e5dda5b
SSDEEP

6144:0XPEvmSL4nfFsmUf6yjeZkAIdFIrasbROhxxpeTr/ekI:0fE1cnfiRn4lesIzxp6L

Score

10^/10

tofsee evasion execution persistence privilege_escalation 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) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

4620 netsh.exe

pid	process
4620	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\uxlujuun\ImagePath = "C:\\Windows\\SysWOW64\\uxlujuun\\cfdyszjt.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:

5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1403246978-718555486-3105247137-1000\Control Panel\International\Geo\Nation	5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

3568 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

cfdyszjt.exe

pid process

532 cfdyszjt.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

cfdyszjt.exe

description pid process target process

PID 532 set thread context of 3568 532 cfdyszjt.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

4724 sc.exe
4544 sc.exe
1408 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3568	svchost.exe

pid	process
532	cfdyszjt.exe

description	pid	process	target process
PID 532 set thread context of 3568	532	cfdyszjt.exe	svchost.exe

pid	process
4724	sc.exe
4544	sc.exe
1408	sc.exe

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

Processes:

netsh.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

3352 1364 WerFault.exe 5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe
4768 532 WerFault.exe cfdyszjt.exe

pid	pid_target	process	target process
3352	1364	WerFault.exe	5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe
4768	532	WerFault.exe	cfdyszjt.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.execfdyszjt.exe

description	pid	process	target process
PID 1364 wrote to memory of 2892	1364	5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe	cmd.exe
PID 1364 wrote to memory of 2892	1364	5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe	cmd.exe
PID 1364 wrote to memory of 2892	1364	5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe	cmd.exe
PID 1364 wrote to memory of 3476	1364	5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe	cmd.exe
PID 1364 wrote to memory of 3476	1364	5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe	cmd.exe
PID 1364 wrote to memory of 3476	1364	5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe	cmd.exe
PID 1364 wrote to memory of 4724	1364	5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe	sc.exe
PID 1364 wrote to memory of 4724	1364	5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe	sc.exe
PID 1364 wrote to memory of 4724	1364	5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe	sc.exe
PID 1364 wrote to memory of 4544	1364	5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe	sc.exe
PID 1364 wrote to memory of 4544	1364	5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe	sc.exe
PID 1364 wrote to memory of 4544	1364	5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe	sc.exe
PID 1364 wrote to memory of 1408	1364	5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe	sc.exe
PID 1364 wrote to memory of 1408	1364	5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe	sc.exe
PID 1364 wrote to memory of 1408	1364	5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe	sc.exe
PID 1364 wrote to memory of 4620	1364	5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe	netsh.exe
PID 1364 wrote to memory of 4620	1364	5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe	netsh.exe
PID 1364 wrote to memory of 4620	1364	5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe	netsh.exe
PID 532 wrote to memory of 3568	532	cfdyszjt.exe	svchost.exe
PID 532 wrote to memory of 3568	532	cfdyszjt.exe	svchost.exe
PID 532 wrote to memory of 3568	532	cfdyszjt.exe	svchost.exe
PID 532 wrote to memory of 3568	532	cfdyszjt.exe	svchost.exe
PID 532 wrote to memory of 3568	532	cfdyszjt.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1364

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uxlujuun\
2⤵
PID:2892

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cfdyszjt.exe" C:\Windows\SysWOW64\uxlujuun\
2⤵
PID:3476

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create uxlujuun binPath= "C:\Windows\SysWOW64\uxlujuun\cfdyszjt.exe /d\"C:\Users\Admin\AppData\Local\Temp\5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:4724

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description uxlujuun "wifi internet conection"
2⤵
- Launches sc.exe
PID:4544

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start uxlujuun
2⤵
- Launches sc.exe
PID:1408

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
- Event Triggered Execution: Netsh Helper DLL
PID:4620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1364 -s 804
2⤵
- Program crash
PID:3352

C:\Windows\SysWOW64\uxlujuun\cfdyszjt.exe
C:\Windows\SysWOW64\uxlujuun\cfdyszjt.exe /d"C:\Users\Admin\AppData\Local\Temp\5c9f165708d2048efede69f4f5a98d5c_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:532

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:3568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 532 -s 508
2⤵
- Program crash
PID:4768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1364 -ip 1364
1⤵
PID:2620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 532 -ip 532
1⤵
PID:3992

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

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

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

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

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

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\cfdyszjt.exe
Filesize
14.9MB

MD5
0eea1490124f1acb6c256732caf95448

SHA1
de46825d36ef8387f13768fcf2f2dc79eff67887

SHA256
aa7873df88d721599341b368d84889083ea17f944554018838c741dfa9abf262

SHA512
e8bbe5670c985e41e64634077e4c76e920d4d132fbdf855331760de3e043fd1658f071f1a8a02a12811003da8650a65ee45340006ce2c66c7a5a62481058e19c

Download Submit
memory/532-11-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/532-16-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/532-12-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1364-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1364-8-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1364-1-0x0000000000670000-0x0000000000770000-memory.dmp

Filesize
1024KB

Download
memory/1364-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1364-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1364-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3568-13-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download
memory/3568-15-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download
memory/3568-17-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads