tofsee | cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97

General

Target

cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe
Size

12.1MB
MD5

0933a84caaad7a803af9327f00b427ea
SHA1

a819feb2801a42a00108a1e5989c0b8cab3a7620
SHA256

cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97
SHA512

665358ff9632179f2a872ff3b7d8185ba842569aa9af95cd9a65851d24d750bc9eebe50acb76e4b4cb1808baeed4637eaca167f01e6f89a720b4349ae9338a38
SSDEEP

49152:P1m333333333333333333333333333333333333333333333333333333333333w:d

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
468	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\qpancmrn\ImagePath = "C:\\Windows\\SysWOW64\\qpancmrn\\mrqoekti.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe

Deletes itself 1 IoCs

pid	Process
2928	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
5108	mrqoekti.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5108 set thread context of 2928	5108	mrqoekti.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
1928	sc.exe
3752	sc.exe
4304	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
540	3832	WerFault.exe	81
2148	5108	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	cmd.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	mrqoekti.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.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 3832 wrote to memory of 3280	3832	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	82
PID 3832 wrote to memory of 3280	3832	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	82
PID 3832 wrote to memory of 3280	3832	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	82
PID 3832 wrote to memory of 2516	3832	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	86
PID 3832 wrote to memory of 2516	3832	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	86
PID 3832 wrote to memory of 2516	3832	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	86
PID 3832 wrote to memory of 4304	3832	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	88
PID 3832 wrote to memory of 4304	3832	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	88
PID 3832 wrote to memory of 4304	3832	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	88
PID 3832 wrote to memory of 1928	3832	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	91
PID 3832 wrote to memory of 1928	3832	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	91
PID 3832 wrote to memory of 1928	3832	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	91
PID 3832 wrote to memory of 3752	3832	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	94
PID 3832 wrote to memory of 3752	3832	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	94
PID 3832 wrote to memory of 3752	3832	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	94
PID 3832 wrote to memory of 468	3832	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	97
PID 3832 wrote to memory of 468	3832	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	97
PID 3832 wrote to memory of 468	3832	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	97
PID 5108 wrote to memory of 2928	5108	mrqoekti.exe	102
PID 5108 wrote to memory of 2928	5108	mrqoekti.exe	102
PID 5108 wrote to memory of 2928	5108	mrqoekti.exe	102
PID 5108 wrote to memory of 2928	5108	mrqoekti.exe	102
PID 5108 wrote to memory of 2928	5108	mrqoekti.exe	102

C:\Users\Admin\AppData\Local\Temp\cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe
"C:\Users\Admin\AppData\Local\Temp\cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3832
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qpancmrn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3280
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mrqoekti.exe" C:\Windows\SysWOW64\qpancmrn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2516
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qpancmrn binPath= "C:\Windows\SysWOW64\qpancmrn\mrqoekti.exe /d\"C:\Users\Admin\AppData\Local\Temp\cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4304
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qpancmrn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1928
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qpancmrn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3752
- 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:468
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3832 -s 668
  2⤵
  - Program crash
  PID:540

C:\Windows\SysWOW64\qpancmrn\mrqoekti.exe
C:\Windows\SysWOW64\qpancmrn\mrqoekti.exe /d"C:\Users\Admin\AppData\Local\Temp\cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5108
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2928
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5108 -s 224
  2⤵
  - Program crash
  PID:2148

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3832 -ip 3832
1⤵
PID:2620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 5108 -ip 5108
1⤵
PID:2668

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\mrqoekti.exe

Filesize
13.7MB

MD5
977bedfc4a58da31eb7db7eda05cf9f7

SHA1
9590a420552292d6c829839fca935743dc175116

SHA256
2c30d741109bd8a49307f2cf7890289fac4ee9eab434f096e37f022d1dc8ae4d

SHA512
56e79ebd5af29e33df10bef9c0a6f3e76b72cd3c07b60e36c2bb9ffc9fb57f007a7b3cfe6eb43377ca8726f60a05cbda923dbfe8d78548d1362c906049a064f0

Download Submit
memory/2928-11-0x0000000000150000-0x0000000000165000-memory.dmp

Filesize
84KB

Download
memory/2928-13-0x0000000000150000-0x0000000000165000-memory.dmp

Filesize
84KB

Download
memory/2928-15-0x0000000000150000-0x0000000000165000-memory.dmp

Filesize
84KB

Download
memory/3832-1-0x0000000001740000-0x0000000001840000-memory.dmp

Filesize
1024KB

Download
memory/3832-2-0x00000000032B0000-0x00000000032C3000-memory.dmp

Filesize
76KB

Download
memory/3832-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3832-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3832-9-0x00000000032B0000-0x00000000032C3000-memory.dmp

Filesize
76KB

Download
memory/3832-8-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/5108-14-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/5108-17-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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