tofsee | 82aa9a86e40c08cd9fb8a692485ed58cd00e737747da32b80b7cd93809ef7de5

General

Target

072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe
Size

13.6MB
MD5

b5b559ae20ec80c26ec50afd2d077f53
SHA1

4553fc5937302711ee5e74a881c7fd4acd119e5b
SHA256

072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd
SHA512

dadb525483641f1574c5efcb48cc2c1333d34145b1b7e6386afa9f3e64db7ce45bbe4fc70f2656a997ec42e839bc73cb4c641bd97061e95d712c476f5573cdfd
SSDEEP

196608:aI+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++2:a

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation 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) 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
3932	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\ouwuvlbg\ImagePath = "C:\\Windows\\SysWOW64\\ouwuvlbg\\bqdzlkdp.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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe

Deletes itself 1 IoCs

pid	Process
3660	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
612	bqdzlkdp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 612 set thread context of 3660	612	bqdzlkdp.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
3212	sc.exe
1576	sc.exe
1128	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
1312	2268	WerFault.exe	83
3676	612	WerFault.exe	99

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	bqdzlkdp.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	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	072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.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 2268 wrote to memory of 1728	2268	072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe	87
PID 2268 wrote to memory of 1728	2268	072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe	87
PID 2268 wrote to memory of 1728	2268	072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe	87
PID 2268 wrote to memory of 1220	2268	072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe	89
PID 2268 wrote to memory of 1220	2268	072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe	89
PID 2268 wrote to memory of 1220	2268	072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe	89
PID 2268 wrote to memory of 1128	2268	072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe	91
PID 2268 wrote to memory of 1128	2268	072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe	91
PID 2268 wrote to memory of 1128	2268	072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe	91
PID 2268 wrote to memory of 3212	2268	072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe	93
PID 2268 wrote to memory of 3212	2268	072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe	93
PID 2268 wrote to memory of 3212	2268	072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe	93
PID 2268 wrote to memory of 1576	2268	072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe	97
PID 2268 wrote to memory of 1576	2268	072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe	97
PID 2268 wrote to memory of 1576	2268	072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe	97
PID 2268 wrote to memory of 3932	2268	072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe	100
PID 2268 wrote to memory of 3932	2268	072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe	100
PID 2268 wrote to memory of 3932	2268	072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe	100
PID 612 wrote to memory of 3660	612	bqdzlkdp.exe	106
PID 612 wrote to memory of 3660	612	bqdzlkdp.exe	106
PID 612 wrote to memory of 3660	612	bqdzlkdp.exe	106
PID 612 wrote to memory of 3660	612	bqdzlkdp.exe	106
PID 612 wrote to memory of 3660	612	bqdzlkdp.exe	106

C:\Users\Admin\AppData\Local\Temp\072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe
"C:\Users\Admin\AppData\Local\Temp\072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2268
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ouwuvlbg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1728
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bqdzlkdp.exe" C:\Windows\SysWOW64\ouwuvlbg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1220
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ouwuvlbg binPath= "C:\Windows\SysWOW64\ouwuvlbg\bqdzlkdp.exe /d\"C:\Users\Admin\AppData\Local\Temp\072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1128
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ouwuvlbg "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3212
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ouwuvlbg
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1576
- 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:3932
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 648
  2⤵
  - Program crash
  PID:1312

C:\Windows\SysWOW64\ouwuvlbg\bqdzlkdp.exe
C:\Windows\SysWOW64\ouwuvlbg\bqdzlkdp.exe /d"C:\Users\Admin\AppData\Local\Temp\072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:612
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3660
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 612 -s 508
  2⤵
  - Program crash
  PID:3676

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2268 -ip 2268
1⤵
PID:3576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 612 -ip 612
1⤵
PID:1224

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\bqdzlkdp.exe

Filesize
12.5MB

MD5
660e9f50291f6b791b6502dccc800e22

SHA1
69ab6b9626e3bbf495d1011a8bdbd9531b3b22fc

SHA256
5d565f9bd4fe9531b9a50a0ba456edd7ffc2ce4ec9514b17a5c2424cf99c818d

SHA512
4dc0af8afbf0366c7b7b9a5b132830ac7162d1c4fce1c7cf4a28284a06e4fce4e97f1bb4f84ea6bafea1b3e13cd84c7c6a1df1826293020e21e28c4bc47e849a

Download Submit
memory/612-16-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/612-8-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/612-10-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/2268-13-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/2268-1-0x0000000000A20000-0x0000000000B20000-memory.dmp

Filesize
1024KB

Download
memory/2268-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2268-14-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2268-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2268-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3660-17-0x0000000000EE0000-0x0000000000EF5000-memory.dmp

Filesize
84KB

Download
memory/3660-9-0x0000000000EE0000-0x0000000000EF5000-memory.dmp

Filesize
84KB

Download
memory/3660-19-0x0000000000EE0000-0x0000000000EF5000-memory.dmp

Filesize
84KB

Download
memory/3660-20-0x0000000000EE0000-0x0000000000EF5000-memory.dmp

Filesize
84KB

Download
memory/3660-21-0x0000000000EE0000-0x0000000000EF5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads