tofsee | 79940b2f535b1111facb217b7f3ed439eb91003b345e0e6bc049af42fbbe9b13

Analysis

max time kernel
147s
max time network
147s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24-02-2024 14:22

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General

Target

a2118c67534664afde234ba2dab7c02e.exe
Size

10.2MB
MD5

a2118c67534664afde234ba2dab7c02e
SHA1

c398da3954e3d68ba1f05876d867ce57f9efbb34
SHA256

79940b2f535b1111facb217b7f3ed439eb91003b345e0e6bc049af42fbbe9b13
SHA512

cf20f6b7adfe95968ea411a4945f7460e72a234efb541cfd937105f7a8aa03f4ce93f5d09b341e37db65cb23e1f7304aacfe4f5d4ee72bdc5c0c04d2e4dbc79f
SSDEEP

24576:UlxdvCcpOKCtBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBv:UlzOR

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\qjmskegm = "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
2800	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\qjmskegm\ImagePath = "C:\\Windows\\SysWOW64\\qjmskegm\\fjquwzpb.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2460	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2496	fjquwzpb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2496 set thread context of 2460	2496	fjquwzpb.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2604	sc.exe
2748	sc.exe
2848	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 2208 wrote to memory of 2076	2208	a2118c67534664afde234ba2dab7c02e.exe	28
PID 2208 wrote to memory of 2076	2208	a2118c67534664afde234ba2dab7c02e.exe	28
PID 2208 wrote to memory of 2076	2208	a2118c67534664afde234ba2dab7c02e.exe	28
PID 2208 wrote to memory of 2076	2208	a2118c67534664afde234ba2dab7c02e.exe	28
PID 2208 wrote to memory of 2028	2208	a2118c67534664afde234ba2dab7c02e.exe	30
PID 2208 wrote to memory of 2028	2208	a2118c67534664afde234ba2dab7c02e.exe	30
PID 2208 wrote to memory of 2028	2208	a2118c67534664afde234ba2dab7c02e.exe	30
PID 2208 wrote to memory of 2028	2208	a2118c67534664afde234ba2dab7c02e.exe	30
PID 2208 wrote to memory of 2604	2208	a2118c67534664afde234ba2dab7c02e.exe	32
PID 2208 wrote to memory of 2604	2208	a2118c67534664afde234ba2dab7c02e.exe	32
PID 2208 wrote to memory of 2604	2208	a2118c67534664afde234ba2dab7c02e.exe	32
PID 2208 wrote to memory of 2604	2208	a2118c67534664afde234ba2dab7c02e.exe	32
PID 2208 wrote to memory of 2748	2208	a2118c67534664afde234ba2dab7c02e.exe	34
PID 2208 wrote to memory of 2748	2208	a2118c67534664afde234ba2dab7c02e.exe	34
PID 2208 wrote to memory of 2748	2208	a2118c67534664afde234ba2dab7c02e.exe	34
PID 2208 wrote to memory of 2748	2208	a2118c67534664afde234ba2dab7c02e.exe	34
PID 2208 wrote to memory of 2848	2208	a2118c67534664afde234ba2dab7c02e.exe	36
PID 2208 wrote to memory of 2848	2208	a2118c67534664afde234ba2dab7c02e.exe	36
PID 2208 wrote to memory of 2848	2208	a2118c67534664afde234ba2dab7c02e.exe	36
PID 2208 wrote to memory of 2848	2208	a2118c67534664afde234ba2dab7c02e.exe	36
PID 2208 wrote to memory of 2800	2208	a2118c67534664afde234ba2dab7c02e.exe	39
PID 2208 wrote to memory of 2800	2208	a2118c67534664afde234ba2dab7c02e.exe	39
PID 2208 wrote to memory of 2800	2208	a2118c67534664afde234ba2dab7c02e.exe	39
PID 2208 wrote to memory of 2800	2208	a2118c67534664afde234ba2dab7c02e.exe	39
PID 2496 wrote to memory of 2460	2496	fjquwzpb.exe	41
PID 2496 wrote to memory of 2460	2496	fjquwzpb.exe	41
PID 2496 wrote to memory of 2460	2496	fjquwzpb.exe	41
PID 2496 wrote to memory of 2460	2496	fjquwzpb.exe	41
PID 2496 wrote to memory of 2460	2496	fjquwzpb.exe	41
PID 2496 wrote to memory of 2460	2496	fjquwzpb.exe	41

C:\Users\Admin\AppData\Local\Temp\a2118c67534664afde234ba2dab7c02e.exe
"C:\Users\Admin\AppData\Local\Temp\a2118c67534664afde234ba2dab7c02e.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qjmskegm\
  2⤵
  PID:2076
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fjquwzpb.exe" C:\Windows\SysWOW64\qjmskegm\
  2⤵
  PID:2028
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qjmskegm binPath= "C:\Windows\SysWOW64\qjmskegm\fjquwzpb.exe /d\"C:\Users\Admin\AppData\Local\Temp\a2118c67534664afde234ba2dab7c02e.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2604
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qjmskegm "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2748
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qjmskegm
  2⤵
  - Launches sc.exe
  PID:2848
- 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:2800

C:\Windows\SysWOW64\qjmskegm\fjquwzpb.exe
C:\Windows\SysWOW64\qjmskegm\fjquwzpb.exe /d"C:\Users\Admin\AppData\Local\Temp\a2118c67534664afde234ba2dab7c02e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2496
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  PID:2460

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\fjquwzpb.exe

Filesize
11.1MB

MD5
07f40493804978499d9963b58ca3dae6

SHA1
c5f81bf633de07ebacb3e7cdd880092fffb852a3

SHA256
d659aec535482b840939a7d90987e6c35b5b9b8610e65052c5289f7afd1243b7

SHA512
9ec8192e49cb0a382c6b294c454ae5a58119ee59a8b8ba7ebe3f7915b4cae70692e73474c7aed6aba310b136613de82ee9398d9a8985199312a1d2a8329268ab

Download Submit
C:\Windows\SysWOW64\qjmskegm\fjquwzpb.exe

Filesize
8.1MB

MD5
716f35e77e64f2813b9cfd983a8d1da7

SHA1
86e93fd8aa7d7748f8c229914767baa51de6e3f3

SHA256
33487329bddfbc384d23c47fa2da36358b3cd6cdfa443a7b39af0538034aa394

SHA512
31b8f8c800b7f657e667a79913993f1da383486477a078bfdcd114996875b384cb3b67ee2dbc27983f8e69e45bce3dd166329ef2bb43de2560e5c18dbe57bc6d

Download Submit
memory/2208-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2208-4-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/2208-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2208-8-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/2208-1-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download
memory/2460-20-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2460-22-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2460-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2460-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2460-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2460-21-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2460-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2496-11-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/2496-17-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/2496-10-0x00000000005E0000-0x00000000006E0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads