tofsee | bf377f3b66ceadcfa6d4da5f23ee0695063d00da714e6c6b78eae717b8d72b68

Analysis

max time kernel
146s
max time network
140s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
11/04/2024, 16:00

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General

Target

edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe
Size

13.8MB
MD5

edceb005c2a4dbdbd26fbf126afa558e
SHA1

2aca159eb26d1a8dd90392866c8cb340ea256969
SHA256

bf377f3b66ceadcfa6d4da5f23ee0695063d00da714e6c6b78eae717b8d72b68
SHA512

fff9c42708f303774083cd72b0a9bf4d0a62c0bbd10c80e18f21858e129802f651ed69e6e63d903e286c6521d5e1af9ebf123255fe687b0a0e37ecadb87c0726
SSDEEP

49152:l1yvllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll:lA

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

43.231.4.7

lazystax.ru

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

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\whteltll = "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

pid	Process
2224	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\whteltll\ImagePath = "C:\\Windows\\SysWOW64\\whteltll\\fhalsaoe.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2228	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2840	fhalsaoe.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2840 set thread context of 2228	2840	fhalsaoe.exe	41

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2772	sc.exe
2740	sc.exe
2872	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2176 wrote to memory of 2520	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	28
PID 2176 wrote to memory of 2520	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	28
PID 2176 wrote to memory of 2520	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	28
PID 2176 wrote to memory of 2520	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	28
PID 2176 wrote to memory of 2684	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	30
PID 2176 wrote to memory of 2684	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	30
PID 2176 wrote to memory of 2684	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	30
PID 2176 wrote to memory of 2684	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	30
PID 2176 wrote to memory of 2872	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	32
PID 2176 wrote to memory of 2872	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	32
PID 2176 wrote to memory of 2872	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	32
PID 2176 wrote to memory of 2872	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	32
PID 2176 wrote to memory of 2772	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	34
PID 2176 wrote to memory of 2772	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	34
PID 2176 wrote to memory of 2772	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	34
PID 2176 wrote to memory of 2772	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	34
PID 2176 wrote to memory of 2740	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	36
PID 2176 wrote to memory of 2740	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	36
PID 2176 wrote to memory of 2740	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	36
PID 2176 wrote to memory of 2740	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	36
PID 2176 wrote to memory of 2224	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	39
PID 2176 wrote to memory of 2224	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	39
PID 2176 wrote to memory of 2224	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	39
PID 2176 wrote to memory of 2224	2176	edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe	39
PID 2840 wrote to memory of 2228	2840	fhalsaoe.exe	41
PID 2840 wrote to memory of 2228	2840	fhalsaoe.exe	41
PID 2840 wrote to memory of 2228	2840	fhalsaoe.exe	41
PID 2840 wrote to memory of 2228	2840	fhalsaoe.exe	41
PID 2840 wrote to memory of 2228	2840	fhalsaoe.exe	41
PID 2840 wrote to memory of 2228	2840	fhalsaoe.exe	41

C:\Users\Admin\AppData\Local\Temp\edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2176
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\whteltll\
  2⤵
  PID:2520
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fhalsaoe.exe" C:\Windows\SysWOW64\whteltll\
  2⤵
  PID:2684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create whteltll binPath= "C:\Windows\SysWOW64\whteltll\fhalsaoe.exe /d\"C:\Users\Admin\AppData\Local\Temp\edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2872
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description whteltll "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2772
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start whteltll
  2⤵
  - Launches sc.exe
  PID:2740
- 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:2224

C:\Windows\SysWOW64\whteltll\fhalsaoe.exe
C:\Windows\SysWOW64\whteltll\fhalsaoe.exe /d"C:\Users\Admin\AppData\Local\Temp\edceb005c2a4dbdbd26fbf126afa558e_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2840
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  PID:2228

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
13.2MB

MD5
f98cc65337ea6c995f6af7bea54a1b88

SHA1
388096691f92d4cfa2123ea242dcca5b2dbaa542

SHA256
033cc64af4d9e217e27392f016f003250e17ed026595cb682b5504298ef4cc12

SHA512
7037f54701e9ebf699c76f8ff19a19195d004293bbd2d562ddcac86ecea480fbb4bd6f12c2b907f4163b671c22f8d52e47d636692e41995551f6e376755050fb

Download Submit
memory/2176-1-0x0000000000DE0000-0x0000000000EE0000-memory.dmp

Filesize
1024KB

Download
memory/2176-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2176-4-0x0000000000400000-0x0000000000C20000-memory.dmp

Filesize
8.1MB

Download
memory/2176-7-0x0000000000400000-0x0000000000C20000-memory.dmp

Filesize
8.1MB

Download
memory/2176-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2228-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2228-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2228-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2228-20-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2228-21-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2228-22-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2840-11-0x0000000000400000-0x0000000000C20000-memory.dmp

Filesize
8.1MB

Download
memory/2840-10-0x0000000001080000-0x0000000001180000-memory.dmp

Filesize
1024KB

Download
memory/2840-16-0x0000000000400000-0x0000000000C20000-memory.dmp

Filesize
8.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads