tofsee | ef33a60e6f486b3637d3dc5955669e35dea3d001d2e44f2d0119fb398490a020

Analysis

max time kernel
151s
max time network
145s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25/12/2023, 23:24

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General

Target

430442d77ada11c5d2a8cdcf311593c2.exe
Size

13.4MB
MD5

430442d77ada11c5d2a8cdcf311593c2
SHA1

fa4fb69b1d802ac7314eacb502ce28e431bb9569
SHA256

ef33a60e6f486b3637d3dc5955669e35dea3d001d2e44f2d0119fb398490a020
SHA512

c15750bbc5996e498e872bb953304f7e234213c3500a1332820630ca7bf4683a84492c2cb513622727716ace403f55cae946cdc57aa7f062912c47130bab8e0c
SSDEEP

98304:ONWUlllllllllllllllllllllllllllllllllllllllllllllllllllllllllllZ:cW

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\jvmartzz = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Windows Service

T1543.003

pid	Process
1068	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\jvmartzz\ImagePath = "C:\\Windows\\SysWOW64\\jvmartzz\\zuyqgrtr.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1624	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2644	zuyqgrtr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2644 set thread context of 1624	2644	zuyqgrtr.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2812	sc.exe
2856	sc.exe
2880	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 2212 wrote to memory of 2740	2212	430442d77ada11c5d2a8cdcf311593c2.exe	28
PID 2212 wrote to memory of 2740	2212	430442d77ada11c5d2a8cdcf311593c2.exe	28
PID 2212 wrote to memory of 2740	2212	430442d77ada11c5d2a8cdcf311593c2.exe	28
PID 2212 wrote to memory of 2740	2212	430442d77ada11c5d2a8cdcf311593c2.exe	28
PID 2212 wrote to memory of 1976	2212	430442d77ada11c5d2a8cdcf311593c2.exe	30
PID 2212 wrote to memory of 1976	2212	430442d77ada11c5d2a8cdcf311593c2.exe	30
PID 2212 wrote to memory of 1976	2212	430442d77ada11c5d2a8cdcf311593c2.exe	30
PID 2212 wrote to memory of 1976	2212	430442d77ada11c5d2a8cdcf311593c2.exe	30
PID 2212 wrote to memory of 2812	2212	430442d77ada11c5d2a8cdcf311593c2.exe	32
PID 2212 wrote to memory of 2812	2212	430442d77ada11c5d2a8cdcf311593c2.exe	32
PID 2212 wrote to memory of 2812	2212	430442d77ada11c5d2a8cdcf311593c2.exe	32
PID 2212 wrote to memory of 2812	2212	430442d77ada11c5d2a8cdcf311593c2.exe	32
PID 2212 wrote to memory of 2856	2212	430442d77ada11c5d2a8cdcf311593c2.exe	34
PID 2212 wrote to memory of 2856	2212	430442d77ada11c5d2a8cdcf311593c2.exe	34
PID 2212 wrote to memory of 2856	2212	430442d77ada11c5d2a8cdcf311593c2.exe	34
PID 2212 wrote to memory of 2856	2212	430442d77ada11c5d2a8cdcf311593c2.exe	34
PID 2212 wrote to memory of 2880	2212	430442d77ada11c5d2a8cdcf311593c2.exe	36
PID 2212 wrote to memory of 2880	2212	430442d77ada11c5d2a8cdcf311593c2.exe	36
PID 2212 wrote to memory of 2880	2212	430442d77ada11c5d2a8cdcf311593c2.exe	36
PID 2212 wrote to memory of 2880	2212	430442d77ada11c5d2a8cdcf311593c2.exe	36
PID 2212 wrote to memory of 1068	2212	430442d77ada11c5d2a8cdcf311593c2.exe	38
PID 2212 wrote to memory of 1068	2212	430442d77ada11c5d2a8cdcf311593c2.exe	38
PID 2212 wrote to memory of 1068	2212	430442d77ada11c5d2a8cdcf311593c2.exe	38
PID 2212 wrote to memory of 1068	2212	430442d77ada11c5d2a8cdcf311593c2.exe	38
PID 2644 wrote to memory of 1624	2644	zuyqgrtr.exe	43
PID 2644 wrote to memory of 1624	2644	zuyqgrtr.exe	43
PID 2644 wrote to memory of 1624	2644	zuyqgrtr.exe	43
PID 2644 wrote to memory of 1624	2644	zuyqgrtr.exe	43
PID 2644 wrote to memory of 1624	2644	zuyqgrtr.exe	43
PID 2644 wrote to memory of 1624	2644	zuyqgrtr.exe	43

C:\Users\Admin\AppData\Local\Temp\430442d77ada11c5d2a8cdcf311593c2.exe
"C:\Users\Admin\AppData\Local\Temp\430442d77ada11c5d2a8cdcf311593c2.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2212
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jvmartzz\
  2⤵
  PID:2740
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zuyqgrtr.exe" C:\Windows\SysWOW64\jvmartzz\
  2⤵
  PID:1976
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jvmartzz binPath= "C:\Windows\SysWOW64\jvmartzz\zuyqgrtr.exe /d\"C:\Users\Admin\AppData\Local\Temp\430442d77ada11c5d2a8cdcf311593c2.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2812
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jvmartzz "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2856
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jvmartzz
  2⤵
  - Launches sc.exe
  PID:2880
- 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:1068

C:\Windows\SysWOW64\jvmartzz\zuyqgrtr.exe
C:\Windows\SysWOW64\jvmartzz\zuyqgrtr.exe /d"C:\Users\Admin\AppData\Local\Temp\430442d77ada11c5d2a8cdcf311593c2.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2644
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  PID:1624

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 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\zuyqgrtr.exe

Filesize
1.9MB

MD5
7cfd34dff2b5e719817cc9a509266a5e

SHA1
8960fb67d8370d93147230debd71b827a28411be

SHA256
5ea3c3e1351f10580b7ff35e27527ca239825c09c86086aff1593c2ce7b43ca4

SHA512
d8b36a40e23f6e37325c5c458d4c86a6e944880d03962aa131647a707f7bcad2188d310c3cbd4509eb3357876e23577bda28bec73984b789a73b3530033fa938

Download Submit
C:\Windows\SysWOW64\jvmartzz\zuyqgrtr.exe

Filesize
6.8MB

MD5
da2afbf134271b72dde784dd368edb42

SHA1
56b6180cee067806dd5538589b62c8e68d7c8fef

SHA256
0bcfafb705335d5d5d4075ddf661b0f37e61a0579c6e1a6482b0971180d279f4

SHA512
ee51a0c82d2193646b9697e0357852205f98024a3f9ea83f8de7b8a13b984b7303c0b4ea7a77b1ba980160fd596bfd19eefab559f0343becb3095255e39ff7dd

Download Submit
memory/1624-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1624-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1624-25-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1624-24-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1624-23-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1624-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2212-1-0x0000000003780000-0x0000000003880000-memory.dmp

Filesize
1024KB

Download
memory/2212-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2212-10-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2212-4-0x0000000000400000-0x00000000036CD000-memory.dmp

Filesize
50.8MB

Download
memory/2212-9-0x0000000003780000-0x0000000003880000-memory.dmp

Filesize
1024KB

Download
memory/2212-7-0x0000000000400000-0x00000000036CD000-memory.dmp

Filesize
50.8MB

Download
memory/2212-6-0x0000000000400000-0x00000000036CD000-memory.dmp

Filesize
50.8MB

Download
memory/2644-13-0x00000000037D0000-0x00000000038D0000-memory.dmp

Filesize
1024KB

Download
memory/2644-20-0x0000000000400000-0x00000000036CD000-memory.dmp

Filesize
50.8MB

Download
memory/2644-19-0x0000000000400000-0x00000000036CD000-memory.dmp

Filesize
50.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads