tofsee | 7f8cb81aabb63a3bb8806b9c055582bec59ef104362316dc164dd686128b9246

General

Target

20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe
Size

99KB
MD5

20de026bf4998364c894a00f7a97df60
SHA1

9db4857e4894082aa77c5f5b82009f2028f8fc51
SHA256

7f8cb81aabb63a3bb8806b9c055582bec59ef104362316dc164dd686128b9246
SHA512

10894d234217ba24391d5de14e40908cfb13ae367e943b34fafad9c6bd5caa937501f1db04ee43127171d40d7d185fa09cf3de8f765b89aa706272ee6c0596dc
SSDEEP

1536:R33ZAoU8Ed7fzXfQFlj8+6a+Vpvy/eKaO/VChHWNvw0+pDi8P19Exk:hZ3EZf6A+6a+Vpvy/ead22KHDDPEa

Score

10^/10

tofsee evasion execution 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) 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

Processes:

netsh.exe

pid process

4524 netsh.exe

pid	process
4524	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\tckcfyph\ImagePath = "C:\\Windows\\SysWOW64\\tckcfyph\\oikhbxhm.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

Processes:

20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2400 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

oikhbxhm.exe

pid process

400 oikhbxhm.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

oikhbxhm.exe

description pid process target process

PID 400 set thread context of 2400 400 oikhbxhm.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

3596 sc.exe
3740 sc.exe
3328 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2400	svchost.exe

pid	process
400	oikhbxhm.exe

description	pid	process	target process
PID 400 set thread context of 2400	400	oikhbxhm.exe	svchost.exe

pid	process
3596	sc.exe
3740	sc.exe
3328	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

20de026bf4998364c894a00f7a97df60_JaffaCakes118.exeoikhbxhm.exe

description	pid	process	target process
PID 3672 wrote to memory of 4488	3672	20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe	cmd.exe
PID 3672 wrote to memory of 4488	3672	20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe	cmd.exe
PID 3672 wrote to memory of 4488	3672	20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe	cmd.exe
PID 3672 wrote to memory of 4188	3672	20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe	cmd.exe
PID 3672 wrote to memory of 4188	3672	20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe	cmd.exe
PID 3672 wrote to memory of 4188	3672	20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe	cmd.exe
PID 3672 wrote to memory of 3596	3672	20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe	sc.exe
PID 3672 wrote to memory of 3596	3672	20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe	sc.exe
PID 3672 wrote to memory of 3596	3672	20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe	sc.exe
PID 3672 wrote to memory of 3740	3672	20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe	sc.exe
PID 3672 wrote to memory of 3740	3672	20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe	sc.exe
PID 3672 wrote to memory of 3740	3672	20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe	sc.exe
PID 3672 wrote to memory of 3328	3672	20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe	sc.exe
PID 3672 wrote to memory of 3328	3672	20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe	sc.exe
PID 3672 wrote to memory of 3328	3672	20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe	sc.exe
PID 3672 wrote to memory of 4524	3672	20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe	netsh.exe
PID 3672 wrote to memory of 4524	3672	20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe	netsh.exe
PID 3672 wrote to memory of 4524	3672	20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe	netsh.exe
PID 400 wrote to memory of 2400	400	oikhbxhm.exe	svchost.exe
PID 400 wrote to memory of 2400	400	oikhbxhm.exe	svchost.exe
PID 400 wrote to memory of 2400	400	oikhbxhm.exe	svchost.exe
PID 400 wrote to memory of 2400	400	oikhbxhm.exe	svchost.exe
PID 400 wrote to memory of 2400	400	oikhbxhm.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3672

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tckcfyph\
2⤵
PID:4488

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oikhbxhm.exe" C:\Windows\SysWOW64\tckcfyph\
2⤵
PID:4188

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create tckcfyph binPath= "C:\Windows\SysWOW64\tckcfyph\oikhbxhm.exe /d\"C:\Users\Admin\AppData\Local\Temp\20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:3596

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description tckcfyph "wifi internet conection"
2⤵
- Launches sc.exe
PID:3740

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start tckcfyph
2⤵
- Launches sc.exe
PID:3328

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:4524

C:\Windows\SysWOW64\tckcfyph\oikhbxhm.exe
C:\Windows\SysWOW64\tckcfyph\oikhbxhm.exe /d"C:\Users\Admin\AppData\Local\Temp\20de026bf4998364c894a00f7a97df60_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:400

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:2400

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=4160 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8
1⤵
PID:2180

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\oikhbxhm.exe
Filesize
12.6MB

MD5
b8d5a6092bd7805b2675e79e19f7ace3

SHA1
645316b40bf484703a4db664f8c2a5a9b6deab87

SHA256
cfca296ad672d08018a05bab61e28e155549a9e513e2876eddb3207c5e3ccf6e

SHA512
17e163b0b7984bf478823ebac6b42b4f0b07818fe589eb0bd3608c1e0a357af1e9eafedee6313e927b3f900b7366c661110721fd6b0e002f4e4ecd3d1830156d

Download Submit
memory/400-8-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/400-7-0x0000000000920000-0x0000000000921000-memory.dmp

Filesize
4KB

Download
memory/400-10-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2400-9-0x0000000000790000-0x00000000007A5000-memory.dmp

Filesize
84KB

Download
memory/2400-12-0x0000000000790000-0x00000000007A5000-memory.dmp

Filesize
84KB

Download
memory/2400-13-0x0000000000790000-0x00000000007A5000-memory.dmp

Filesize
84KB

Download
memory/3672-0-0x0000000000B20000-0x0000000000B21000-memory.dmp

Filesize
4KB

Download
memory/3672-1-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/3672-2-0x0000000000450000-0x0000000000451000-memory.dmp

Filesize
4KB

Download
memory/3672-5-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads