tofsee | af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9

General

Target

af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe
Size

13.8MB
MD5

4842a0bebf959ba6fdc4b18107c78094
SHA1

237f34e23c2853820a1faf6aed7bc7af837dae41
SHA256

af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9
SHA512

2098a9e8b61f27f41854d34d4833571be3a0fc163c2ee83f5aea4bbcf49f44da362980da43744e7b10456a8aec4034455e271e4b3117946e6891bc1bf18ca4ca
SSDEEP

196608:kxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxz:8

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4864	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\qeealcwn\ImagePath = "C:\\Windows\\SysWOW64\\qeealcwn\\jlfuqmiz.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe

Deletes itself 1 IoCs

pid	Process
1060	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2380	jlfuqmiz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2380 set thread context of 1060	2380	jlfuqmiz.exe	104

Launches sc.exe 3 IoCs

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

pid	Process
1216	sc.exe
2104	sc.exe
2968	sc.exe

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

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4308	4764	WerFault.exe	83
3140	2380	WerFault.exe	96

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jlfuqmiz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4764 wrote to memory of 1156	4764	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	84
PID 4764 wrote to memory of 1156	4764	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	84
PID 4764 wrote to memory of 1156	4764	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	84
PID 4764 wrote to memory of 432	4764	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	86
PID 4764 wrote to memory of 432	4764	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	86
PID 4764 wrote to memory of 432	4764	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	86
PID 4764 wrote to memory of 1216	4764	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	88
PID 4764 wrote to memory of 1216	4764	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	88
PID 4764 wrote to memory of 1216	4764	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	88
PID 4764 wrote to memory of 2104	4764	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	90
PID 4764 wrote to memory of 2104	4764	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	90
PID 4764 wrote to memory of 2104	4764	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	90
PID 4764 wrote to memory of 2968	4764	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	94
PID 4764 wrote to memory of 2968	4764	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	94
PID 4764 wrote to memory of 2968	4764	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	94
PID 4764 wrote to memory of 4864	4764	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	97
PID 4764 wrote to memory of 4864	4764	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	97
PID 4764 wrote to memory of 4864	4764	af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe	97
PID 2380 wrote to memory of 1060	2380	jlfuqmiz.exe	104
PID 2380 wrote to memory of 1060	2380	jlfuqmiz.exe	104
PID 2380 wrote to memory of 1060	2380	jlfuqmiz.exe	104
PID 2380 wrote to memory of 1060	2380	jlfuqmiz.exe	104
PID 2380 wrote to memory of 1060	2380	jlfuqmiz.exe	104

C:\Users\Admin\AppData\Local\Temp\af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe
"C:\Users\Admin\AppData\Local\Temp\af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4764
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qeealcwn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1156
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jlfuqmiz.exe" C:\Windows\SysWOW64\qeealcwn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:432
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qeealcwn binPath= "C:\Windows\SysWOW64\qeealcwn\jlfuqmiz.exe /d\"C:\Users\Admin\AppData\Local\Temp\af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1216
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qeealcwn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2104
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qeealcwn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2968
- 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
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:4864
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4764 -s 1036
  2⤵
  - Program crash
  PID:4308

C:\Windows\SysWOW64\qeealcwn\jlfuqmiz.exe
C:\Windows\SysWOW64\qeealcwn\jlfuqmiz.exe /d"C:\Users\Admin\AppData\Local\Temp\af242def7641cca5cd70a3da05b44a45efd70102f39b376b65f8b3a07d6a23a9.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2380 -s 516
  2⤵
  - Program crash
  PID:3140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4764 -ip 4764
1⤵
PID:3396

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2380 -ip 2380
1⤵
PID:688

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

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

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

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

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
13.0MB

MD5
6a7c577c0be190a4e08939f01a5b6694

SHA1
8367e140ab8c7f3deda18c76d687232743bfba7f

SHA256
6e262f6d8b989ba22724504769453a189f1bad50c193a292aefba49111b676a2

SHA512
37c7e4c3d6b40963c8a61dde5e0b0355f284b5cd9b665495b72d099f4726880a0e2f1172a7bb7dc65c89d4c20712a404271a15675c774eb216876aae0ceb21e2

Download Submit
memory/1060-10-0x0000000000550000-0x0000000000565000-memory.dmp

Filesize
84KB

Download
memory/1060-13-0x0000000000550000-0x0000000000565000-memory.dmp

Filesize
84KB

Download
memory/1060-12-0x0000000000550000-0x0000000000565000-memory.dmp

Filesize
84KB

Download
memory/2380-14-0x0000000000400000-0x0000000002F06000-memory.dmp

Filesize
43.0MB

Download
memory/4764-0-0x00000000030B0000-0x00000000030BD000-memory.dmp

Filesize
52KB

Download
memory/4764-1-0x0000000004C70000-0x0000000004C83000-memory.dmp

Filesize
76KB

Download
memory/4764-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4764-7-0x00000000030B0000-0x00000000030BD000-memory.dmp

Filesize
52KB

Download
memory/4764-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4764-8-0x0000000004C70000-0x0000000004C83000-memory.dmp

Filesize
76KB

Download
memory/4764-6-0x0000000000400000-0x0000000002F06000-memory.dmp

Filesize
43.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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