tofsee | 0f2a790e1a03008ffcd468faa2ea0e0003b18f3e45189d25e835ca6fe5eb4417

Analysis

max time kernel
148s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
02/04/2024, 04:37

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General

Target
83d8280e972398709103e07acb5db531_JaffaCakes118.exe
Size 11.1MB
Sample240402-e88yqahd34
SHA256 0f2a790e1a03008ffcd468faa2ea0e0003b18f3e45189d25e835ca6fe5eb4417
MD5 83d8280e972398709103e07acb5db531
SHA1 6400f1663c65ca1a9e19b30219fda6d86d6f51ba
SHA512 cf80f769c64f7520b5f55918b9911f83b6060399c386eabe866df648f58d0f335f42e5f2ff8c2a8272a40a99c54122cb26410648232d812bb89713526bf3f79d
SSDEEP 98304:0Y3333333333333333333333333333333333333333333333333333333333333X:0
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

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) 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
3440	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\indgcoxh\ImagePath = "C:\\Windows\\SysWOW64\\indgcoxh\\puqigjv.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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	83d8280e972398709103e07acb5db531_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4424	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3464	puqigjv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3464 set thread context of 4424	3464	puqigjv.exe	108

Launches sc.exe 3 IoCs

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

pid	Process
3308	sc.exe
528	sc.exe
4172	sc.exe

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2720	3560	WerFault.exe	84
2800	3464	WerFault.exe	102

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3560 wrote to memory of 4408	3560	83d8280e972398709103e07acb5db531_JaffaCakes118.exe	88
PID 3560 wrote to memory of 4408	3560	83d8280e972398709103e07acb5db531_JaffaCakes118.exe	88
PID 3560 wrote to memory of 4408	3560	83d8280e972398709103e07acb5db531_JaffaCakes118.exe	88
PID 3560 wrote to memory of 5056	3560	83d8280e972398709103e07acb5db531_JaffaCakes118.exe	92
PID 3560 wrote to memory of 5056	3560	83d8280e972398709103e07acb5db531_JaffaCakes118.exe	92
PID 3560 wrote to memory of 5056	3560	83d8280e972398709103e07acb5db531_JaffaCakes118.exe	92
PID 3560 wrote to memory of 3308	3560	83d8280e972398709103e07acb5db531_JaffaCakes118.exe	94
PID 3560 wrote to memory of 3308	3560	83d8280e972398709103e07acb5db531_JaffaCakes118.exe	94
PID 3560 wrote to memory of 3308	3560	83d8280e972398709103e07acb5db531_JaffaCakes118.exe	94
PID 3560 wrote to memory of 528	3560	83d8280e972398709103e07acb5db531_JaffaCakes118.exe	98
PID 3560 wrote to memory of 528	3560	83d8280e972398709103e07acb5db531_JaffaCakes118.exe	98
PID 3560 wrote to memory of 528	3560	83d8280e972398709103e07acb5db531_JaffaCakes118.exe	98
PID 3560 wrote to memory of 4172	3560	83d8280e972398709103e07acb5db531_JaffaCakes118.exe	100
PID 3560 wrote to memory of 4172	3560	83d8280e972398709103e07acb5db531_JaffaCakes118.exe	100
PID 3560 wrote to memory of 4172	3560	83d8280e972398709103e07acb5db531_JaffaCakes118.exe	100
PID 3560 wrote to memory of 3440	3560	83d8280e972398709103e07acb5db531_JaffaCakes118.exe	103
PID 3560 wrote to memory of 3440	3560	83d8280e972398709103e07acb5db531_JaffaCakes118.exe	103
PID 3560 wrote to memory of 3440	3560	83d8280e972398709103e07acb5db531_JaffaCakes118.exe	103
PID 3464 wrote to memory of 4424	3464	puqigjv.exe	108
PID 3464 wrote to memory of 4424	3464	puqigjv.exe	108
PID 3464 wrote to memory of 4424	3464	puqigjv.exe	108
PID 3464 wrote to memory of 4424	3464	puqigjv.exe	108
PID 3464 wrote to memory of 4424	3464	puqigjv.exe	108

C:\Users\Admin\AppData\Local\Temp\83d8280e972398709103e07acb5db531_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\83d8280e972398709103e07acb5db531_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3560
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\indgcoxh\
  2⤵
  PID:4408
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\puqigjv.exe" C:\Windows\SysWOW64\indgcoxh\
  2⤵
  PID:5056
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create indgcoxh binPath= "C:\Windows\SysWOW64\indgcoxh\puqigjv.exe /d\"C:\Users\Admin\AppData\Local\Temp\83d8280e972398709103e07acb5db531_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:3308
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description indgcoxh "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:528
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start indgcoxh
  2⤵
  - Launches sc.exe
  PID:4172
- 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:3440
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3560 -s 1184
  2⤵
  - Program crash
  PID:2720

C:\Windows\SysWOW64\indgcoxh\puqigjv.exe
C:\Windows\SysWOW64\indgcoxh\puqigjv.exe /d"C:\Users\Admin\AppData\Local\Temp\83d8280e972398709103e07acb5db531_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3464
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:4424
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3464 -s 512
  2⤵
  - Program crash
  PID:2800

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3560 -ip 3560
1⤵
PID:4712

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 3464 -ip 3464
1⤵
PID:4112

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

puqigjv.exe

Path C:\Users\Admin\AppData\Local\Temp\puqigjv.exe
Size 14.3MB
SHA256 298d2ed0485649e6c305351ad14431867703fe755b61934912b7216c1d2b7cb9
MD5 33db63d72875738e16777ac6f18da957
SHA1 00195f4e313434f090bea11f97fa32dbc534ef38
SHA512 706cd920e6df951150b5cbaa13d9b9dde594f5b5e252855bcf9a66a2eefa319acdf8c0455f5813bf2246693873fc42ed9c523ec63a3d284f7d4c47db776de865
SSDEEP 98304:QY3333333333333333333333333333333333333333333333333333333333333X:Q
MD5 SHA1 SHA512 SSDEEP

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memory/3464-10-0x0000000000530000-0x0000000000630000-memory.dmp

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memory/3464-11-0x0000000000400000-0x0000000000448000-memory.dmp

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memory/3464-17-0x0000000000400000-0x0000000000448000-memory.dmp

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memory/3560-3-0x0000000000400000-0x0000000000448000-memory.dmp

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memory/3560-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

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memory/3560-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

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memory/3560-8-0x0000000000400000-0x0000000000448000-memory.dmp

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memory/3560-1-0x0000000000750000-0x0000000000850000-memory.dmp

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memory/4424-12-0x0000000000770000-0x0000000000785000-memory.dmp

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memory/4424-15-0x0000000000770000-0x0000000000785000-memory.dmp

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memory/4424-16-0x0000000000770000-0x0000000000785000-memory.dmp

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memory/4424-18-0x0000000000770000-0x0000000000785000-memory.dmp

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memory/4424-19-0x0000000000770000-0x0000000000785000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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