tofsee | 84c7cf500a3f80503733ee11075b15399a1d6af01485e19c3caaecb52c2909c8

General

Target

7f4ac2fafc02d4f6144c8aeee6627ec8.exe
Size

13.6MB
MD5

7f4ac2fafc02d4f6144c8aeee6627ec8
SHA1

9b97a23034cd97993b6c55d5a4ac16d4e8ac8e3b
SHA256

84c7cf500a3f80503733ee11075b15399a1d6af01485e19c3caaecb52c2909c8
SHA512

ca74d14d415f20c44a0f26975c95f0ef8618ae2cf57dd4db039e8483bae70d83074d67d1c04cbdccffdc0f6c54f998de88de6da77814b5a8bbb537b60ca17466
SSDEEP

24576:1htJbmFQuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuX:SF

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
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
1952	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\nliacogh\ImagePath = "C:\\Windows\\SysWOW64\\nliacogh\\vqadrcck.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	7f4ac2fafc02d4f6144c8aeee6627ec8.exe

Deletes itself 1 IoCs

pid	Process
1068	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4088	vqadrcck.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4088 set thread context of 1068	4088	vqadrcck.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
4004	sc.exe
2748	sc.exe
1652	sc.exe

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3936	2764	WerFault.exe	82
3232	4088	WerFault.exe	93

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2764 wrote to memory of 4576	2764	7f4ac2fafc02d4f6144c8aeee6627ec8.exe	83
PID 2764 wrote to memory of 4576	2764	7f4ac2fafc02d4f6144c8aeee6627ec8.exe	83
PID 2764 wrote to memory of 4576	2764	7f4ac2fafc02d4f6144c8aeee6627ec8.exe	83
PID 2764 wrote to memory of 1212	2764	7f4ac2fafc02d4f6144c8aeee6627ec8.exe	85
PID 2764 wrote to memory of 1212	2764	7f4ac2fafc02d4f6144c8aeee6627ec8.exe	85
PID 2764 wrote to memory of 1212	2764	7f4ac2fafc02d4f6144c8aeee6627ec8.exe	85
PID 2764 wrote to memory of 2748	2764	7f4ac2fafc02d4f6144c8aeee6627ec8.exe	87
PID 2764 wrote to memory of 2748	2764	7f4ac2fafc02d4f6144c8aeee6627ec8.exe	87
PID 2764 wrote to memory of 2748	2764	7f4ac2fafc02d4f6144c8aeee6627ec8.exe	87
PID 2764 wrote to memory of 1652	2764	7f4ac2fafc02d4f6144c8aeee6627ec8.exe	89
PID 2764 wrote to memory of 1652	2764	7f4ac2fafc02d4f6144c8aeee6627ec8.exe	89
PID 2764 wrote to memory of 1652	2764	7f4ac2fafc02d4f6144c8aeee6627ec8.exe	89
PID 2764 wrote to memory of 4004	2764	7f4ac2fafc02d4f6144c8aeee6627ec8.exe	91
PID 2764 wrote to memory of 4004	2764	7f4ac2fafc02d4f6144c8aeee6627ec8.exe	91
PID 2764 wrote to memory of 4004	2764	7f4ac2fafc02d4f6144c8aeee6627ec8.exe	91
PID 2764 wrote to memory of 1952	2764	7f4ac2fafc02d4f6144c8aeee6627ec8.exe	94
PID 2764 wrote to memory of 1952	2764	7f4ac2fafc02d4f6144c8aeee6627ec8.exe	94
PID 2764 wrote to memory of 1952	2764	7f4ac2fafc02d4f6144c8aeee6627ec8.exe	94
PID 4088 wrote to memory of 1068	4088	vqadrcck.exe	102
PID 4088 wrote to memory of 1068	4088	vqadrcck.exe	102
PID 4088 wrote to memory of 1068	4088	vqadrcck.exe	102
PID 4088 wrote to memory of 1068	4088	vqadrcck.exe	102
PID 4088 wrote to memory of 1068	4088	vqadrcck.exe	102

C:\Users\Admin\AppData\Local\Temp\7f4ac2fafc02d4f6144c8aeee6627ec8.exe
"C:\Users\Admin\AppData\Local\Temp\7f4ac2fafc02d4f6144c8aeee6627ec8.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2764
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nliacogh\
  2⤵
  PID:4576
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vqadrcck.exe" C:\Windows\SysWOW64\nliacogh\
  2⤵
  PID:1212
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nliacogh binPath= "C:\Windows\SysWOW64\nliacogh\vqadrcck.exe /d\"C:\Users\Admin\AppData\Local\Temp\7f4ac2fafc02d4f6144c8aeee6627ec8.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2748
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nliacogh "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:1652
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nliacogh
  2⤵
  - Launches sc.exe
  PID:4004
- 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:1952
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2764 -s 1192
  2⤵
  - Program crash
  PID:3936

C:\Windows\SysWOW64\nliacogh\vqadrcck.exe
C:\Windows\SysWOW64\nliacogh\vqadrcck.exe /d"C:\Users\Admin\AppData\Local\Temp\7f4ac2fafc02d4f6144c8aeee6627ec8.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4088
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:1068
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4088 -s 532
  2⤵
  - Program crash
  PID:3232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2764 -ip 2764
1⤵
PID:3828

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4088 -ip 4088
1⤵
PID:2964

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
10.6MB

MD5
03532b11b36dddaafd0892ce52cd7681

SHA1
e1c1b2fc939212a7b371426c001b3e9deb562802

SHA256
8ccf52196198162be133f95e8b243107260ec3757f766f5e5bf650e166eeefa1

SHA512
5b16bde8699c8ea733cd9e5be728e67df47b834163a22c92d9c470c8fce2ae5c9b3c50a947daa073cc2bc397485dbd2a4753bc920e3abbfca00af5c33b394669

Download Submit
C:\Windows\SysWOW64\nliacogh\vqadrcck.exe

Filesize
6.8MB

MD5
004f38a98fabe299160e146aa25e68a5

SHA1
8d5d5d1442c0ca8b44ce45a12a19bd1fb1b6fbc2

SHA256
ecad71faea5b8db6e898887d96c887265c1b491aa0d433d567a343c1cd78673b

SHA512
fbbbc1f64c6e6a6e7d06ce237dae0219c9fe98e87c3613413e2e81ea988a6095de8a0c2f47ac5987f5a0a5170e6b09cb506524ba5eb995621b48337b1432b3c6

Download Submit
memory/1068-13-0x0000000000C20000-0x0000000000C35000-memory.dmp

Filesize
84KB

Download
memory/1068-19-0x0000000000C20000-0x0000000000C35000-memory.dmp

Filesize
84KB

Download
memory/1068-18-0x0000000000C20000-0x0000000000C35000-memory.dmp

Filesize
84KB

Download
memory/1068-16-0x0000000000C20000-0x0000000000C35000-memory.dmp

Filesize
84KB

Download
memory/2764-9-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2764-10-0x00000000005E0000-0x00000000005F3000-memory.dmp

Filesize
76KB

Download
memory/2764-1-0x0000000000460000-0x0000000000560000-memory.dmp

Filesize
1024KB

Download
memory/2764-6-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2764-3-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2764-2-0x00000000005E0000-0x00000000005F3000-memory.dmp

Filesize
76KB

Download
memory/4088-11-0x00000000006C0000-0x00000000007C0000-memory.dmp

Filesize
1024KB

Download
memory/4088-12-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4088-17-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads