tofsee | ccce4d243971b2f4421ce21285c634f0ec010ac71c9df0044babac25683689ff

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240319-en
resource tags

arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
submitted
28/03/2024, 22:37

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General

Target
11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe
Size 14.3MB
Sample240328-2j8yrabc39
SHA256 ccce4d243971b2f4421ce21285c634f0ec010ac71c9df0044babac25683689ff
MD5 11cbe0c4ddd87dc6b88c3e4cabfeb51f
SHA1 43d9c5304f1b880faff156c640a85452e7a50505
SHA512 e64bd02b886ec4231a01d2317af25f07987828a488c96c5f1ca054d9d3cfe63d56769b5f27189e852fccdcd6411e326bf999d2a53e550dc1d28ed001e682bc10
SSDEEP 196608:rtPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPH:r
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
392	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\dfadylkq\ImagePath = "C:\\Windows\\SysWOW64\\dfadylkq\\cakiiyhx.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-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
848	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4404	cakiiyhx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4404 set thread context of 848	4404	cakiiyhx.exe	116

Launches sc.exe 3 IoCs

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

pid	Process
4812	sc.exe
3728	sc.exe
1428	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
3868	1704	WerFault.exe	92
2128	4404	WerFault.exe	110

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1704 wrote to memory of 4944	1704	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	96
PID 1704 wrote to memory of 4944	1704	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	96
PID 1704 wrote to memory of 4944	1704	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	96
PID 1704 wrote to memory of 400	1704	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	98
PID 1704 wrote to memory of 400	1704	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	98
PID 1704 wrote to memory of 400	1704	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	98
PID 1704 wrote to memory of 4812	1704	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	102
PID 1704 wrote to memory of 4812	1704	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	102
PID 1704 wrote to memory of 4812	1704	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	102
PID 1704 wrote to memory of 3728	1704	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	104
PID 1704 wrote to memory of 3728	1704	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	104
PID 1704 wrote to memory of 3728	1704	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	104
PID 1704 wrote to memory of 1428	1704	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	107
PID 1704 wrote to memory of 1428	1704	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	107
PID 1704 wrote to memory of 1428	1704	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	107
PID 1704 wrote to memory of 392	1704	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	111
PID 1704 wrote to memory of 392	1704	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	111
PID 1704 wrote to memory of 392	1704	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	111
PID 4404 wrote to memory of 848	4404	cakiiyhx.exe	116
PID 4404 wrote to memory of 848	4404	cakiiyhx.exe	116
PID 4404 wrote to memory of 848	4404	cakiiyhx.exe	116
PID 4404 wrote to memory of 848	4404	cakiiyhx.exe	116
PID 4404 wrote to memory of 848	4404	cakiiyhx.exe	116

C:\Users\Admin\AppData\Local\Temp\11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1704
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dfadylkq\
  2⤵
  PID:4944
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cakiiyhx.exe" C:\Windows\SysWOW64\dfadylkq\
  2⤵
  PID:400
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dfadylkq binPath= "C:\Windows\SysWOW64\dfadylkq\cakiiyhx.exe /d\"C:\Users\Admin\AppData\Local\Temp\11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:4812
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dfadylkq "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:3728
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dfadylkq
  2⤵
  - Launches sc.exe
  PID:1428
- 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:392
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1704 -s 1216
  2⤵
  - Program crash
  PID:3868

C:\Windows\SysWOW64\dfadylkq\cakiiyhx.exe
C:\Windows\SysWOW64\dfadylkq\cakiiyhx.exe /d"C:\Users\Admin\AppData\Local\Temp\11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4404
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:848
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4404 -s 512
  2⤵
  - Program crash
  PID:2128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1704 -ip 1704
1⤵
PID:3220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 4404 -ip 4404
1⤵
PID:3668

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1312 --field-trial-handle=2260,i,4762972005863767630,9297428255150568035,262144 --variations-seed-version /prefetch:8
1⤵
PID:788

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

cakiiyhx.exe

Path C:\Users\Admin\AppData\Local\Temp\cakiiyhx.exe
Size 10.3MB
SHA256 682b1c509e2faa500ec1267370dfc5c690484b9ed92cfac60f7811e30cfb4e1f
MD5 171c3e841b591c3e963bac1b351d6efb
SHA1 69c5653bf12eb6317b0712aa7828fd55848bcfc1
SHA512 db9c1cc8c429d48b78c8859727ef903953474eea1a8e1e16b23bf4b71484eb0a0e3d1a9e45307a0e6a3cdcae99f1ba60bbf673d8d493a90c5afc0d8f6cc4e4e6
SSDEEP 196608:7tPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPn:7
MD5 SHA1 SHA512 SSDEEP

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memory/848-18-0x00000000008D0000-0x00000000008E5000-memory.dmp

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memory/848-12-0x00000000008D0000-0x00000000008E5000-memory.dmp

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memory/848-15-0x00000000008D0000-0x00000000008E5000-memory.dmp

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memory/848-19-0x00000000008D0000-0x00000000008E5000-memory.dmp

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memory/848-16-0x00000000008D0000-0x00000000008E5000-memory.dmp

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memory/1704-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

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memory/1704-4-0x0000000000400000-0x0000000000871000-memory.dmp

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memory/1704-8-0x0000000000400000-0x0000000000871000-memory.dmp

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memory/1704-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

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memory/1704-1-0x0000000000900000-0x0000000000A00000-memory.dmp

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memory/4404-10-0x0000000000990000-0x0000000000A90000-memory.dmp

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memory/4404-17-0x0000000000400000-0x0000000000871000-memory.dmp

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memory/4404-11-0x0000000000400000-0x0000000000871000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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