tofsee | d070f43729c000ac138d6666b1ec932d5b513f94fd4eeba1f549811146a25a01

General

Target

f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe
Size

13.4MB
MD5

f8cc259a0c835f7c01a3d4a76fbbf0e9
SHA1

37bd6f7e3c970355684bbe521ade1bef750cea74
SHA256

d070f43729c000ac138d6666b1ec932d5b513f94fd4eeba1f549811146a25a01
SHA512

fadab6c9f3a4bba02ce0ea4a967aba52ed04ce0096796bce8d2cf66ff91a45767cde6ed646d672355afc74791f377fa2c02b499c6c2eb6490f7c7674396dce63
SSDEEP

24576:5Uqa71YB5DHlommmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmH:5F15

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\zsrxnaip = "0"	svchost.exe

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

2544 netsh.exe

pid	process
2544	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\zsrxnaip\ImagePath = "C:\\Windows\\SysWOW64\\zsrxnaip\\veqwgbxn.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2584 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

veqwgbxn.exe

pid process

2740 veqwgbxn.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

veqwgbxn.exe

description pid process target process

PID 2740 set thread context of 2584 2740 veqwgbxn.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

2568 sc.exe
2520 sc.exe
2676 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2584	svchost.exe

pid	process
2740	veqwgbxn.exe

description	pid	process	target process
PID 2740 set thread context of 2584	2740	veqwgbxn.exe	svchost.exe

pid	process
2568	sc.exe
2520	sc.exe
2676	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exeveqwgbxn.exe

description	pid	process	target process
PID 2788 wrote to memory of 1240	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	cmd.exe
PID 2788 wrote to memory of 1240	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	cmd.exe
PID 2788 wrote to memory of 1240	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	cmd.exe
PID 2788 wrote to memory of 1240	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	cmd.exe
PID 2788 wrote to memory of 1968	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	cmd.exe
PID 2788 wrote to memory of 1968	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	cmd.exe
PID 2788 wrote to memory of 1968	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	cmd.exe
PID 2788 wrote to memory of 1968	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	cmd.exe
PID 2788 wrote to memory of 2520	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	sc.exe
PID 2788 wrote to memory of 2520	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	sc.exe
PID 2788 wrote to memory of 2520	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	sc.exe
PID 2788 wrote to memory of 2520	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	sc.exe
PID 2788 wrote to memory of 2676	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	sc.exe
PID 2788 wrote to memory of 2676	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	sc.exe
PID 2788 wrote to memory of 2676	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	sc.exe
PID 2788 wrote to memory of 2676	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	sc.exe
PID 2788 wrote to memory of 2568	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	sc.exe
PID 2788 wrote to memory of 2568	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	sc.exe
PID 2788 wrote to memory of 2568	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	sc.exe
PID 2788 wrote to memory of 2568	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	sc.exe
PID 2788 wrote to memory of 2544	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	netsh.exe
PID 2788 wrote to memory of 2544	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	netsh.exe
PID 2788 wrote to memory of 2544	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	netsh.exe
PID 2788 wrote to memory of 2544	2788	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	netsh.exe
PID 2740 wrote to memory of 2584	2740	veqwgbxn.exe	svchost.exe
PID 2740 wrote to memory of 2584	2740	veqwgbxn.exe	svchost.exe
PID 2740 wrote to memory of 2584	2740	veqwgbxn.exe	svchost.exe
PID 2740 wrote to memory of 2584	2740	veqwgbxn.exe	svchost.exe
PID 2740 wrote to memory of 2584	2740	veqwgbxn.exe	svchost.exe
PID 2740 wrote to memory of 2584	2740	veqwgbxn.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2788
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zsrxnaip\
  2⤵
  PID:1240
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\veqwgbxn.exe" C:\Windows\SysWOW64\zsrxnaip\
  2⤵
  PID:1968
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zsrxnaip binPath= "C:\Windows\SysWOW64\zsrxnaip\veqwgbxn.exe /d\"C:\Users\Admin\AppData\Local\Temp\f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2520
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zsrxnaip "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2676
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zsrxnaip
  2⤵
  - Launches sc.exe
  PID:2568
- 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:2544

C:\Windows\SysWOW64\zsrxnaip\veqwgbxn.exe
C:\Windows\SysWOW64\zsrxnaip\veqwgbxn.exe /d"C:\Users\Admin\AppData\Local\Temp\f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2740
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  PID:2584

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

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\veqwgbxn.exe

Filesize
10.0MB

MD5
be90322f34ea4117afe828b2bc65de3e

SHA1
f6f0310419ba7ba88d14783df434a25ba436e5d4

SHA256
ea00bb468b500c73746846b22935d2d394d44f3bf313917255f04b61e0c83a1f

SHA512
66a4f0c69c29fdd73b66c32435f5be702d0568568effad86d6245c18d8d37f88c5190586eb4f40edeefac1501c7a7c7880ce497b512bf7e33f96641c73cff9e2

Download Submit
memory/2584-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2584-10-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2584-13-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2584-20-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2584-21-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2584-22-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2740-15-0x00000000008D0000-0x00000000009D0000-memory.dmp

Filesize
1024KB

Download
memory/2740-16-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/2788-3-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/2788-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2788-6-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/2788-9-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2788-1-0x00000000002F0000-0x00000000003F0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads