tofsee | d39c5063a4eda5f8ea4649825487354b2f0592809999413090b707f633204da6

Analysis

max time kernel
150s
max time network
155s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28/02/2024, 19:59

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General

Target

acb8cd26d804916a7e98d7f0fd8157e4.exe
Size

13.6MB
MD5

acb8cd26d804916a7e98d7f0fd8157e4
SHA1

23b660393932160ee5d5450dc743cf75c73d7b80
SHA256

d39c5063a4eda5f8ea4649825487354b2f0592809999413090b707f633204da6
SHA512

3ef7d0e17b9aafeebf36d49a2f90218ae3a7c1c14b17d73f30d771f6d57107569b34617cb965ea8617441952d72c912660d63303be9e1ff153535b4115013e9b
SSDEEP

24576:tlxdvCcpOKCtBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBJ:tlzOR

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

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

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\unfblpbj = "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
2408	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\unfblpbj\ImagePath = "C:\\Windows\\SysWOW64\\unfblpbj\\ddavypgy.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2384	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2492	ddavypgy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2492 set thread context of 2384	2492	ddavypgy.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2728	sc.exe
2656	sc.exe
2616	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 1708 wrote to memory of 3036	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	28
PID 1708 wrote to memory of 3036	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	28
PID 1708 wrote to memory of 3036	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	28
PID 1708 wrote to memory of 3036	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	28
PID 1708 wrote to memory of 2464	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	30
PID 1708 wrote to memory of 2464	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	30
PID 1708 wrote to memory of 2464	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	30
PID 1708 wrote to memory of 2464	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	30
PID 1708 wrote to memory of 2616	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	32
PID 1708 wrote to memory of 2616	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	32
PID 1708 wrote to memory of 2616	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	32
PID 1708 wrote to memory of 2616	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	32
PID 1708 wrote to memory of 2728	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	34
PID 1708 wrote to memory of 2728	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	34
PID 1708 wrote to memory of 2728	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	34
PID 1708 wrote to memory of 2728	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	34
PID 1708 wrote to memory of 2656	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	36
PID 1708 wrote to memory of 2656	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	36
PID 1708 wrote to memory of 2656	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	36
PID 1708 wrote to memory of 2656	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	36
PID 1708 wrote to memory of 2408	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	39
PID 1708 wrote to memory of 2408	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	39
PID 1708 wrote to memory of 2408	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	39
PID 1708 wrote to memory of 2408	1708	acb8cd26d804916a7e98d7f0fd8157e4.exe	39
PID 2492 wrote to memory of 2384	2492	ddavypgy.exe	41
PID 2492 wrote to memory of 2384	2492	ddavypgy.exe	41
PID 2492 wrote to memory of 2384	2492	ddavypgy.exe	41
PID 2492 wrote to memory of 2384	2492	ddavypgy.exe	41
PID 2492 wrote to memory of 2384	2492	ddavypgy.exe	41
PID 2492 wrote to memory of 2384	2492	ddavypgy.exe	41

C:\Users\Admin\AppData\Local\Temp\acb8cd26d804916a7e98d7f0fd8157e4.exe
"C:\Users\Admin\AppData\Local\Temp\acb8cd26d804916a7e98d7f0fd8157e4.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1708
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\unfblpbj\
  2⤵
  PID:3036
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ddavypgy.exe" C:\Windows\SysWOW64\unfblpbj\
  2⤵
  PID:2464
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create unfblpbj binPath= "C:\Windows\SysWOW64\unfblpbj\ddavypgy.exe /d\"C:\Users\Admin\AppData\Local\Temp\acb8cd26d804916a7e98d7f0fd8157e4.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2616
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description unfblpbj "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2728
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start unfblpbj
  2⤵
  - Launches sc.exe
  PID:2656
- 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:2408

C:\Windows\SysWOW64\unfblpbj\ddavypgy.exe
C:\Windows\SysWOW64\unfblpbj\ddavypgy.exe /d"C:\Users\Admin\AppData\Local\Temp\acb8cd26d804916a7e98d7f0fd8157e4.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2492
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  PID:2384

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\ddavypgy.exe

Filesize
196KB

MD5
0b0175225a50950e74fc3ed5dd949037

SHA1
12865485d195442a7f8b641e455bf4c443726333

SHA256
1858bfa2bef61dee502830950b282432817d4d736d5d8ac264a93b8533cc9612

SHA512
15f0a040d02cad553c75243a57db3ec26b964a7d0670028f009f1e71ccda6d5c5f5666ec7e604b8543076794a7268e6ce6cd21e99802ef047457731a03e48b02

Download Submit
C:\Windows\SysWOW64\unfblpbj\ddavypgy.exe

Filesize
9.7MB

MD5
e80d0eba5a9f9edc2374206c86a201f3

SHA1
50cdd41070c91b2750d71324abcce2b9f59c47b5

SHA256
9aa06854f36b6170f68e6d095a4713d1116ebce7fcf526b7bf2ee1952afbba8f

SHA512
fa9be4aec1f3cff87aa4f62831f0b2e16ae42dddeccc18d3dc821eb3b6020819c86802ba33349504401f1f55457bbc35cc03b6469d5a77ee69c40b8449b2e23b

Download Submit
memory/1708-1-0x0000000000510000-0x0000000000610000-memory.dmp

Filesize
1024KB

Download
memory/1708-3-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1708-4-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/1708-8-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/2384-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2384-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2384-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2384-19-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2384-20-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2384-21-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2492-10-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/2492-9-0x00000000002D0000-0x00000000003D0000-memory.dmp

Filesize
1024KB

Download
memory/2492-17-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads