tofsee | 588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c

General

Target

588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe
Size

12.6MB
MD5

0c4b956df94e7fa77967043428ee105d
SHA1

7ec22983461cd45e2fba80b561b9006fd5e012be
SHA256

588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c
SHA512

1d0b850ec7273459e454b24ca3ead47d36a270762cc7a348f15df73b63d31390f795e9283e84b401148515ad2404e53993221fee92cf4ca0cd851638e054b18e
SSDEEP

393216:fH2222222222222222222222222222222222222222222222222222222222222h:v222222222222222222222222222222G

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.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
3832	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\fzxvjgya\ImagePath = "C:\\Windows\\SysWOW64\\fzxvjgya\\ikdovdrh.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe

Deletes itself 1 IoCs

pid	Process
4784	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3152	ikdovdrh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3152 set thread context of 4784	3152	ikdovdrh.exe	94

Launches sc.exe 3 IoCs

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

pid	Process
1616	sc.exe
1504	sc.exe
796	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
1804	2548	WerFault.exe	82
5112	3152	WerFault.exe	93

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ikdovdrh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2548 wrote to memory of 4692	2548	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	83
PID 2548 wrote to memory of 4692	2548	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	83
PID 2548 wrote to memory of 4692	2548	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	83
PID 2548 wrote to memory of 1420	2548	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	85
PID 2548 wrote to memory of 1420	2548	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	85
PID 2548 wrote to memory of 1420	2548	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	85
PID 2548 wrote to memory of 1616	2548	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	87
PID 2548 wrote to memory of 1616	2548	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	87
PID 2548 wrote to memory of 1616	2548	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	87
PID 2548 wrote to memory of 1504	2548	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	89
PID 2548 wrote to memory of 1504	2548	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	89
PID 2548 wrote to memory of 1504	2548	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	89
PID 2548 wrote to memory of 796	2548	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	91
PID 2548 wrote to memory of 796	2548	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	91
PID 2548 wrote to memory of 796	2548	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	91
PID 3152 wrote to memory of 4784	3152	ikdovdrh.exe	94
PID 3152 wrote to memory of 4784	3152	ikdovdrh.exe	94
PID 3152 wrote to memory of 4784	3152	ikdovdrh.exe	94
PID 3152 wrote to memory of 4784	3152	ikdovdrh.exe	94
PID 3152 wrote to memory of 4784	3152	ikdovdrh.exe	94
PID 2548 wrote to memory of 3832	2548	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	100
PID 2548 wrote to memory of 3832	2548	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	100
PID 2548 wrote to memory of 3832	2548	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	100

C:\Users\Admin\AppData\Local\Temp\588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe
"C:\Users\Admin\AppData\Local\Temp\588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2548
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fzxvjgya\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4692
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ikdovdrh.exe" C:\Windows\SysWOW64\fzxvjgya\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1420
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fzxvjgya binPath= "C:\Windows\SysWOW64\fzxvjgya\ikdovdrh.exe /d\"C:\Users\Admin\AppData\Local\Temp\588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1616
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fzxvjgya "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1504
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fzxvjgya
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:796
- 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:3832
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2548 -s 600
  2⤵
  - Program crash
  PID:1804

C:\Windows\SysWOW64\fzxvjgya\ikdovdrh.exe
C:\Windows\SysWOW64\fzxvjgya\ikdovdrh.exe /d"C:\Users\Admin\AppData\Local\Temp\588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3152
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4784
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3152 -s 520
  2⤵
  - Program crash
  PID:5112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3152 -ip 3152
1⤵
PID:1952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2548 -ip 2548
1⤵
PID:3928

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\ikdovdrh.exe

Filesize
11.9MB

MD5
88bc08a83542d0ce880626a1131b8d51

SHA1
8f9a832566a28a46918b26adda212a07ca2ec5ca

SHA256
847e55086018375d4c52c863ea1340199aab8a6f49f0a057a24ec96c55d39f4b

SHA512
e784249809b352ae4bd7c69de172cc76b7cb30e48deba50599dbb228a0f22f458ae6d1ff523a57af1f8978d566df5c50c50b111b4f64d3ab1cc78ffdb1ae651b

Download Submit
memory/2548-13-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2548-2-0x00000000006D0000-0x00000000006E3000-memory.dmp

Filesize
76KB

Download
memory/2548-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2548-14-0x00000000006D0000-0x00000000006E3000-memory.dmp

Filesize
76KB

Download
memory/2548-1-0x00000000006F0000-0x00000000007F0000-memory.dmp

Filesize
1024KB

Download
memory/2548-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3152-17-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/3152-8-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/4784-12-0x00000000003B0000-0x00000000003C5000-memory.dmp

Filesize
84KB

Download
memory/4784-9-0x00000000003B0000-0x00000000003C5000-memory.dmp

Filesize
84KB

Download
memory/4784-18-0x00000000003B0000-0x00000000003C5000-memory.dmp

Filesize
84KB

Download
memory/4784-19-0x00000000003B0000-0x00000000003C5000-memory.dmp

Filesize
84KB

Download
memory/4784-20-0x00000000003B0000-0x00000000003C5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads