tofsee | be08b1f6756d1985393042730c68972c4e144c7af06c20910b73ac43cea1f38d

General

Target

fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe
Size

12.3MB
MD5

fa2cfe80ce726ca4c7c3ed8013a39903
SHA1

f185e4e2c7b0752c38db7f6082142716b886c449
SHA256

be08b1f6756d1985393042730c68972c4e144c7af06c20910b73ac43cea1f38d
SHA512

434b1a78e04bd240548d8bc5c6cd63b5992dcbb08f026b3b8a59e81c8c005e34a2b03aac7bc096270a170c68f83871cc8cf3c87297c4d0cf0916e57d6b0de9bc
SSDEEP

24576:BerU5sWbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb3:BsW

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

4372 netsh.exe

pid	process
4372	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\ynbvesnv\ImagePath = "C:\\Windows\\SysWOW64\\ynbvesnv\\idnqeppx.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:

fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1826666146-2574340311-1877551059-1000\Control Panel\International\Geo\Nation	fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

idnqeppx.exe

pid process

4628 idnqeppx.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

idnqeppx.exe

description pid process target process

PID 4628 set thread context of 4464 4628 idnqeppx.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

3996 sc.exe
4280 sc.exe
3236 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4628	idnqeppx.exe

description	pid	process	target process
PID 4628 set thread context of 4464	4628	idnqeppx.exe	svchost.exe

pid	process
3996	sc.exe
4280	sc.exe
3236	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exeidnqeppx.exe

description	pid	process	target process
PID 4668 wrote to memory of 2256	4668	fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe	cmd.exe
PID 4668 wrote to memory of 2256	4668	fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe	cmd.exe
PID 4668 wrote to memory of 2256	4668	fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe	cmd.exe
PID 4668 wrote to memory of 944	4668	fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe	cmd.exe
PID 4668 wrote to memory of 944	4668	fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe	cmd.exe
PID 4668 wrote to memory of 944	4668	fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe	cmd.exe
PID 4668 wrote to memory of 4280	4668	fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe	sc.exe
PID 4668 wrote to memory of 4280	4668	fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe	sc.exe
PID 4668 wrote to memory of 4280	4668	fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe	sc.exe
PID 4668 wrote to memory of 3236	4668	fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe	sc.exe
PID 4668 wrote to memory of 3236	4668	fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe	sc.exe
PID 4668 wrote to memory of 3236	4668	fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe	sc.exe
PID 4668 wrote to memory of 3996	4668	fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe	sc.exe
PID 4668 wrote to memory of 3996	4668	fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe	sc.exe
PID 4668 wrote to memory of 3996	4668	fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe	sc.exe
PID 4668 wrote to memory of 4372	4668	fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe	netsh.exe
PID 4668 wrote to memory of 4372	4668	fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe	netsh.exe
PID 4668 wrote to memory of 4372	4668	fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe	netsh.exe
PID 4628 wrote to memory of 4464	4628	idnqeppx.exe	svchost.exe
PID 4628 wrote to memory of 4464	4628	idnqeppx.exe	svchost.exe
PID 4628 wrote to memory of 4464	4628	idnqeppx.exe	svchost.exe
PID 4628 wrote to memory of 4464	4628	idnqeppx.exe	svchost.exe
PID 4628 wrote to memory of 4464	4628	idnqeppx.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4668
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ynbvesnv\
  2⤵
  PID:2256
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\idnqeppx.exe" C:\Windows\SysWOW64\ynbvesnv\
  2⤵
  PID:944
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ynbvesnv binPath= "C:\Windows\SysWOW64\ynbvesnv\idnqeppx.exe /d\"C:\Users\Admin\AppData\Local\Temp\fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:4280
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ynbvesnv "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:3236
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ynbvesnv
  2⤵
  - Launches sc.exe
  PID:3996
- 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:4372

C:\Windows\SysWOW64\ynbvesnv\idnqeppx.exe
C:\Windows\SysWOW64\ynbvesnv\idnqeppx.exe /d"C:\Users\Admin\AppData\Local\Temp\fa2cfe80ce726ca4c7c3ed8013a39903_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4628
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  PID:4464

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\idnqeppx.exe

Filesize
13.3MB

MD5
edaeeb1c1c5cb0a454a80ffe641a7364

SHA1
cc34dd07c1e72c8232c9f850a7fe65c77315c2be

SHA256
be76ee2a4c1991332f83e84388041faf65f881cf447739a17090da870b42daca

SHA512
0ccaa533095fe61475aabbf072967d29d9d1428650d835c3ea23eb2a90b494fc494ec40308567a9adf2f3ee006911ab1b47e0737455a42a6d73d572a4bfa5c53

Download Submit
memory/4464-18-0x0000000000860000-0x0000000000875000-memory.dmp

Filesize
84KB

Download
memory/4464-17-0x0000000000860000-0x0000000000875000-memory.dmp

Filesize
84KB

Download
memory/4464-26-0x0000000000860000-0x0000000000875000-memory.dmp

Filesize
84KB

Download
memory/4464-12-0x0000000000860000-0x0000000000875000-memory.dmp

Filesize
84KB

Download
memory/4464-15-0x0000000000860000-0x0000000000875000-memory.dmp

Filesize
84KB

Download
memory/4628-11-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/4628-9-0x00000000004B0000-0x00000000005B0000-memory.dmp

Filesize
1024KB

Download
memory/4628-10-0x00000000005F0000-0x0000000000603000-memory.dmp

Filesize
76KB

Download
memory/4628-19-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/4668-3-0x00000000004F0000-0x0000000000503000-memory.dmp

Filesize
76KB

Download
memory/4668-2-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/4668-16-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/4668-1-0x0000000000520000-0x0000000000620000-memory.dmp

Filesize
1024KB

Download
memory/4668-23-0x0000000000520000-0x0000000000620000-memory.dmp

Filesize
1024KB

Download
memory/4668-4-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads