tofsee | 978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357

General

Target

978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe
Size

11.9MB
MD5

b5072febf349daf9ec3efb305e919bbb
SHA1

f897d5d432849eba226148bd301b19e6ded7c67a
SHA256

978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357
SHA512

bc46f4c9b859a47a60de9d99df7a8084c96373238e505122a222f0f9fbb89514adf29d247b622714c82be726866a9463dcbb2bb9d8fd88a63cd02ac2f1b2839c
SSDEEP

3072:P8NYa2qJjULtTNupQyEC6pxhhfm5OcVi:PsRItTNKr2f45

Score

10^/10

tofsee evasion persistence 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
Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Windows Service

T1543.003

pid	Process
2296	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\mvnubolb\ImagePath = "C:\\Windows\\SysWOW64\\mvnubolb\\wzhhfdhq.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-1-5-21-3350690463-3549324357-1323838019-1000\Control Panel\International\Geo\Nation	978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe

Deletes itself 1 IoCs

pid	Process
1292	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3948	wzhhfdhq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3948 set thread context of 1292	3948	wzhhfdhq.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
1120	sc.exe
3864	sc.exe
4960	sc.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2600 wrote to memory of 1492	2600	978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe	90
PID 2600 wrote to memory of 1492	2600	978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe	90
PID 2600 wrote to memory of 1492	2600	978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe	90
PID 2600 wrote to memory of 3096	2600	978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe	92
PID 2600 wrote to memory of 3096	2600	978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe	92
PID 2600 wrote to memory of 3096	2600	978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe	92
PID 2600 wrote to memory of 3864	2600	978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe	94
PID 2600 wrote to memory of 3864	2600	978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe	94
PID 2600 wrote to memory of 3864	2600	978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe	94
PID 2600 wrote to memory of 4960	2600	978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe	96
PID 2600 wrote to memory of 4960	2600	978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe	96
PID 2600 wrote to memory of 4960	2600	978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe	96
PID 2600 wrote to memory of 1120	2600	978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe	100
PID 2600 wrote to memory of 1120	2600	978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe	100
PID 2600 wrote to memory of 1120	2600	978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe	100
PID 2600 wrote to memory of 2296	2600	978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe	102
PID 2600 wrote to memory of 2296	2600	978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe	102
PID 2600 wrote to memory of 2296	2600	978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe	102
PID 3948 wrote to memory of 1292	3948	wzhhfdhq.exe	106
PID 3948 wrote to memory of 1292	3948	wzhhfdhq.exe	106
PID 3948 wrote to memory of 1292	3948	wzhhfdhq.exe	106
PID 3948 wrote to memory of 1292	3948	wzhhfdhq.exe	106
PID 3948 wrote to memory of 1292	3948	wzhhfdhq.exe	106

C:\Users\Admin\AppData\Local\Temp\978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe
"C:\Users\Admin\AppData\Local\Temp\978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2600
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mvnubolb\
  2⤵
  PID:1492
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wzhhfdhq.exe" C:\Windows\SysWOW64\mvnubolb\
  2⤵
  PID:3096
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mvnubolb binPath= "C:\Windows\SysWOW64\mvnubolb\wzhhfdhq.exe /d\"C:\Users\Admin\AppData\Local\Temp\978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:3864
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mvnubolb "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4960
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mvnubolb
  2⤵
  - Launches sc.exe
  PID:1120
- 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:2296

C:\Windows\SysWOW64\mvnubolb\wzhhfdhq.exe
C:\Windows\SysWOW64\mvnubolb\wzhhfdhq.exe /d"C:\Users\Admin\AppData\Local\Temp\978dbbcd7fe5aef66e208b49220efe402292abb56754dd81ba61c10ec9bcc357.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3948
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:1292

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

Modify Registry

1

T1112

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\wzhhfdhq.exe

Filesize
12.8MB

MD5
9fa31c4c5e6b948d0fc17f97bc8babc8

SHA1
4caf3adc2721d9b96961e6c462dcf0a7a770e041

SHA256
206085edc8fad399f17227705b59dd0eab1f017043fa7479cf27f39a919f4870

SHA512
b54488fb7bd52b3dfcc8f64c5a1cd88b74556c87e61daf062683bed51e377b356d368b687a968aee060c147770aa5e2de4d1b7fc585266e9bc90e4ebb93b8746

Download Submit
C:\Windows\SysWOW64\mvnubolb\wzhhfdhq.exe

Filesize
12.8MB

MD5
9fa31c4c5e6b948d0fc17f97bc8babc8

SHA1
4caf3adc2721d9b96961e6c462dcf0a7a770e041

SHA256
206085edc8fad399f17227705b59dd0eab1f017043fa7479cf27f39a919f4870

SHA512
b54488fb7bd52b3dfcc8f64c5a1cd88b74556c87e61daf062683bed51e377b356d368b687a968aee060c147770aa5e2de4d1b7fc585266e9bc90e4ebb93b8746

Download Submit
memory/1292-14-0x0000000000A80000-0x0000000000A95000-memory.dmp

Filesize
84KB

Download
memory/1292-16-0x0000000000A80000-0x0000000000A95000-memory.dmp

Filesize
84KB

Download
memory/1292-9-0x0000000000A80000-0x0000000000A95000-memory.dmp

Filesize
84KB

Download
memory/1292-15-0x0000000000A80000-0x0000000000A95000-memory.dmp

Filesize
84KB

Download
memory/2600-2-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2600-1-0x00000000006F0000-0x00000000006F1000-memory.dmp

Filesize
4KB

Download
memory/2600-5-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2600-0-0x0000000000590000-0x0000000000591000-memory.dmp

Filesize
4KB

Download
memory/3948-7-0x00000000004B0000-0x00000000004B1000-memory.dmp

Filesize
4KB

Download
memory/3948-11-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3948-8-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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