tofsee | aab4d171224cd7e59fd439190fb4a351bccb2299a553c2869d1e5e6a225bcb08

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
18/04/2024, 14:05

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General

Target
f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe
Size 10.8MB
Sample240418-rdxy7afb69
SHA256 aab4d171224cd7e59fd439190fb4a351bccb2299a553c2869d1e5e6a225bcb08
MD5 f8280412bf45e83a637a9d523375463b
SHA1 eaf3df733d4cc605e25cc7e123c808f34b840af7
SHA512 a17ff9527031b9e777e38b31c0316fb53992bb4e426aa45a5f850d35215248d02d664e16363a2706255e8b76a328d0b8b358f90a80505d4bf2ac4a374287f4ef
SSDEEP 49152:MsrcHggggggggggggggggggggggggggggggggggggggggggggggggggggggggggY:Nc
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

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 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
1628	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\wxrahhiu\ImagePath = "C:\\Windows\\SysWOW64\\wxrahhiu\\bgqlfroq.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-1-5-21-553605503-2331009851-2137262461-1000\Control Panel\International\Geo\Nation	f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2036	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2176	bgqlfroq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2176 set thread context of 2036	2176	bgqlfroq.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4992	sc.exe
1540	sc.exe
3344	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 4364 wrote to memory of 220	4364	f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe	85
PID 4364 wrote to memory of 220	4364	f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe	85
PID 4364 wrote to memory of 220	4364	f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe	85
PID 4364 wrote to memory of 1560	4364	f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe	87
PID 4364 wrote to memory of 1560	4364	f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe	87
PID 4364 wrote to memory of 1560	4364	f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe	87
PID 4364 wrote to memory of 4992	4364	f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe	89
PID 4364 wrote to memory of 4992	4364	f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe	89
PID 4364 wrote to memory of 4992	4364	f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe	89
PID 4364 wrote to memory of 1540	4364	f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe	91
PID 4364 wrote to memory of 1540	4364	f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe	91
PID 4364 wrote to memory of 1540	4364	f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe	91
PID 4364 wrote to memory of 3344	4364	f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe	93
PID 4364 wrote to memory of 3344	4364	f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe	93
PID 4364 wrote to memory of 3344	4364	f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe	93
PID 4364 wrote to memory of 1628	4364	f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe	96
PID 4364 wrote to memory of 1628	4364	f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe	96
PID 4364 wrote to memory of 1628	4364	f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe	96
PID 2176 wrote to memory of 2036	2176	bgqlfroq.exe	98
PID 2176 wrote to memory of 2036	2176	bgqlfroq.exe	98
PID 2176 wrote to memory of 2036	2176	bgqlfroq.exe	98
PID 2176 wrote to memory of 2036	2176	bgqlfroq.exe	98
PID 2176 wrote to memory of 2036	2176	bgqlfroq.exe	98

C:\Users\Admin\AppData\Local\Temp\f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4364
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wxrahhiu\
  2⤵
  PID:220
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bgqlfroq.exe" C:\Windows\SysWOW64\wxrahhiu\
  2⤵
  PID:1560
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wxrahhiu binPath= "C:\Windows\SysWOW64\wxrahhiu\bgqlfroq.exe /d\"C:\Users\Admin\AppData\Local\Temp\f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:4992
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wxrahhiu "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:1540
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wxrahhiu
  2⤵
  - Launches sc.exe
  PID:3344
- 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:1628

C:\Windows\SysWOW64\wxrahhiu\bgqlfroq.exe
C:\Windows\SysWOW64\wxrahhiu\bgqlfroq.exe /d"C:\Users\Admin\AppData\Local\Temp\f8280412bf45e83a637a9d523375463b_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2176
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:2036

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

bgqlfroq.exe

Path C:\Users\Admin\AppData\Local\Temp\bgqlfroq.exe
Size 11.8MB
SHA256 26acebd2d91e772c29891deacb6ebf1cb609387acd29fbfcdf1a58f80d48ea6c
MD5 ab914a66b3e688e8f3fb8991df3010e5
SHA1 533193e8140e9d282b896b47be4685e4eee29e09
SHA512 21910c33cd8c03941bd86d47de78ad2cf9cc7252af0eb305a2f0acb511f6af5f92b43512aa34047f6c180fbdd64fadd400ae8dabef0e1fb22e42860e85073b3d
SSDEEP 49152:isrcHggggggggggggggggggggggggggggggggggggggggggggggggggggggggggH:jc
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2036-12-0x0000000000980000-0x0000000000995000-memory.dmp

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memory/2036-18-0x0000000000980000-0x0000000000995000-memory.dmp

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memory/2036-17-0x0000000000980000-0x0000000000995000-memory.dmp

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memory/2036-16-0x0000000000980000-0x0000000000995000-memory.dmp

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memory/2176-10-0x0000000000820000-0x0000000000920000-memory.dmp

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memory/2176-11-0x0000000000400000-0x000000000045A000-memory.dmp

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memory/2176-14-0x0000000000400000-0x000000000045A000-memory.dmp

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memory/4364-1-0x00000000005E0000-0x00000000006E0000-memory.dmp

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memory/4364-7-0x00000000005C0000-0x00000000005D3000-memory.dmp

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memory/4364-6-0x0000000000400000-0x000000000045A000-memory.dmp

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memory/4364-3-0x0000000000400000-0x000000000045A000-memory.dmp

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memory/4364-2-0x00000000005C0000-0x00000000005D3000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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