tofsee | 269e51d9c2174d193dbf8b0998668a5645fa762730073d41db50e327b1ec990d

Analysis

max time kernel
152s
max time network
125s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
30/12/2023, 06:22

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General

Target

10f11cde77f7b899bd0eae7d1deb17dc.exe
Size

13.2MB
MD5

10f11cde77f7b899bd0eae7d1deb17dc
SHA1

cfa3a115b807d25e06734f6456bb5a1a9e1deb80
SHA256

269e51d9c2174d193dbf8b0998668a5645fa762730073d41db50e327b1ec990d
SHA512

295c89dfc6eb24aa7ecda6385d307e895c1db53f72d54bb158de6b6754b9f7df893020f67fb960af81a58a272f5e928b4ec328dc636b9223a2fc8983c4d218fe
SSDEEP

393216:wbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbn:

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\uetvpmiq = "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
2808	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\uetvpmiq\ImagePath = "C:\\Windows\\SysWOW64\\uetvpmiq\\auulwfwy.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2256	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2548	auulwfwy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2548 set thread context of 2256	2548	auulwfwy.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2760	sc.exe
2820	sc.exe
2088	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 1736 wrote to memory of 2404	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	28
PID 1736 wrote to memory of 2404	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	28
PID 1736 wrote to memory of 2404	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	28
PID 1736 wrote to memory of 2404	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	28
PID 1736 wrote to memory of 2656	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	30
PID 1736 wrote to memory of 2656	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	30
PID 1736 wrote to memory of 2656	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	30
PID 1736 wrote to memory of 2656	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	30
PID 1736 wrote to memory of 2760	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	32
PID 1736 wrote to memory of 2760	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	32
PID 1736 wrote to memory of 2760	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	32
PID 1736 wrote to memory of 2760	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	32
PID 1736 wrote to memory of 2820	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	35
PID 1736 wrote to memory of 2820	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	35
PID 1736 wrote to memory of 2820	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	35
PID 1736 wrote to memory of 2820	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	35
PID 1736 wrote to memory of 2088	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	37
PID 1736 wrote to memory of 2088	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	37
PID 1736 wrote to memory of 2088	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	37
PID 1736 wrote to memory of 2088	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	37
PID 1736 wrote to memory of 2808	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	38
PID 1736 wrote to memory of 2808	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	38
PID 1736 wrote to memory of 2808	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	38
PID 1736 wrote to memory of 2808	1736	10f11cde77f7b899bd0eae7d1deb17dc.exe	38
PID 2548 wrote to memory of 2256	2548	auulwfwy.exe	41
PID 2548 wrote to memory of 2256	2548	auulwfwy.exe	41
PID 2548 wrote to memory of 2256	2548	auulwfwy.exe	41
PID 2548 wrote to memory of 2256	2548	auulwfwy.exe	41
PID 2548 wrote to memory of 2256	2548	auulwfwy.exe	41
PID 2548 wrote to memory of 2256	2548	auulwfwy.exe	41

C:\Users\Admin\AppData\Local\Temp\10f11cde77f7b899bd0eae7d1deb17dc.exe
"C:\Users\Admin\AppData\Local\Temp\10f11cde77f7b899bd0eae7d1deb17dc.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uetvpmiq\
  2⤵
  PID:2404
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\auulwfwy.exe" C:\Windows\SysWOW64\uetvpmiq\
  2⤵
  PID:2656
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uetvpmiq binPath= "C:\Windows\SysWOW64\uetvpmiq\auulwfwy.exe /d\"C:\Users\Admin\AppData\Local\Temp\10f11cde77f7b899bd0eae7d1deb17dc.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2760
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uetvpmiq "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2820
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uetvpmiq
  2⤵
  - Launches sc.exe
  PID:2088
- 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:2808

C:\Windows\SysWOW64\uetvpmiq\auulwfwy.exe
C:\Windows\SysWOW64\uetvpmiq\auulwfwy.exe /d"C:\Users\Admin\AppData\Local\Temp\10f11cde77f7b899bd0eae7d1deb17dc.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2548
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  PID:2256

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\auulwfwy.exe

Filesize
2.0MB

MD5
39f29a2241d39f1cdd7b1f9cbbde12d5

SHA1
043658c978d3c918749fc882d7fecc8b45dd8006

SHA256
8faa67819047cff10e4162f53430a880e1780d46547d115f62039a9fc025afc2

SHA512
fc3f3dbdb38d01acb5c64543e5af5c2236a09c6ddb69a27a34bca798e1dd521b08f8417e97684ffe33cf527596ba209d3d05d3bba43b97f6f438f3cc89d8ac20

Download Submit
C:\Windows\SysWOW64\uetvpmiq\auulwfwy.exe

Filesize
1.7MB

MD5
7eb4b56446b469de31b380a46cded596

SHA1
b908cb3de9495e60642f7ec8d3ff3a2c6d9a310b

SHA256
c5cebf06cdd761f80b37d9f729fee203eff6c501ec1423cdbb0cbf14c6cb2d4a

SHA512
5c1ff0719524cab668a7fa41aa56a72129bc96430154544dbde3c90aa7d9fad72b2ab1796bb4bcde689b9945df40b6696b9687fb412aec6cf8a0120888ade55a

Download Submit
memory/1736-1-0x0000000002BD0000-0x0000000002CD0000-memory.dmp

Filesize
1024KB

Download
memory/1736-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1736-4-0x0000000000400000-0x0000000002AEC000-memory.dmp

Filesize
38.9MB

Download
memory/1736-6-0x0000000000400000-0x0000000002AEC000-memory.dmp

Filesize
38.9MB

Download
memory/1736-7-0x0000000002BD0000-0x0000000002CD0000-memory.dmp

Filesize
1024KB

Download
memory/2256-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2256-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2256-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2256-20-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2256-21-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2256-22-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2548-10-0x00000000002D0000-0x00000000003D0000-memory.dmp

Filesize
1024KB

Download
memory/2548-15-0x0000000000400000-0x0000000002AEC000-memory.dmp

Filesize
38.9MB

Download
memory/2548-17-0x0000000000400000-0x0000000002AEC000-memory.dmp

Filesize
38.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads