tofsee | 9b2631f5c99866630dd888cf3f9f19a016c1ca94f759fb4943ceb337dbe9d10c

General

Target

ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe
Size

11.4MB
MD5

ffa470cbfce681b6f27abc2b87469f19
SHA1

65871c2c0aea1d37092757678f0f9a7e2e2407f2
SHA256

9b2631f5c99866630dd888cf3f9f19a016c1ca94f759fb4943ceb337dbe9d10c
SHA512

ea45f99101473888a022e87b16c651f513e8e1b03675e217f17d722e3cc9329381a0587a8ad5ba8142c1f1649042e25689c43c32b0d68ece0373bf6cefee6dd7
SSDEEP

98304:eNWUlllllllllllllllllllllllllllllllllllllllllllllllllllllllllllp:sW

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 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

3352 netsh.exe

pid	process
3352	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\kohbbnvy\ImagePath = "C:\\Windows\\SysWOW64\\kohbbnvy\\tfesdnvp.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:

ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1148 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

tfesdnvp.exe

pid process

4152 tfesdnvp.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

tfesdnvp.exe

description pid process target process

PID 4152 set thread context of 1148 4152 tfesdnvp.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

4600 sc.exe
4352 sc.exe
2796 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1148	svchost.exe

pid	process
4152	tfesdnvp.exe

description	pid	process	target process
PID 4152 set thread context of 1148	4152	tfesdnvp.exe	svchost.exe

pid	process
4600	sc.exe
4352	sc.exe
2796	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exetfesdnvp.exe

description	pid	process	target process
PID 2104 wrote to memory of 3504	2104	ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe	cmd.exe
PID 2104 wrote to memory of 3504	2104	ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe	cmd.exe
PID 2104 wrote to memory of 3504	2104	ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe	cmd.exe
PID 2104 wrote to memory of 688	2104	ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe	cmd.exe
PID 2104 wrote to memory of 688	2104	ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe	cmd.exe
PID 2104 wrote to memory of 688	2104	ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe	cmd.exe
PID 2104 wrote to memory of 4600	2104	ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe	sc.exe
PID 2104 wrote to memory of 4600	2104	ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe	sc.exe
PID 2104 wrote to memory of 4600	2104	ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe	sc.exe
PID 2104 wrote to memory of 4352	2104	ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe	sc.exe
PID 2104 wrote to memory of 4352	2104	ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe	sc.exe
PID 2104 wrote to memory of 4352	2104	ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe	sc.exe
PID 2104 wrote to memory of 2796	2104	ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe	sc.exe
PID 2104 wrote to memory of 2796	2104	ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe	sc.exe
PID 2104 wrote to memory of 2796	2104	ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe	sc.exe
PID 2104 wrote to memory of 3352	2104	ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe	netsh.exe
PID 2104 wrote to memory of 3352	2104	ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe	netsh.exe
PID 2104 wrote to memory of 3352	2104	ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe	netsh.exe
PID 4152 wrote to memory of 1148	4152	tfesdnvp.exe	svchost.exe
PID 4152 wrote to memory of 1148	4152	tfesdnvp.exe	svchost.exe
PID 4152 wrote to memory of 1148	4152	tfesdnvp.exe	svchost.exe
PID 4152 wrote to memory of 1148	4152	tfesdnvp.exe	svchost.exe
PID 4152 wrote to memory of 1148	4152	tfesdnvp.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2104

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kohbbnvy\
2⤵
PID:3504

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tfesdnvp.exe" C:\Windows\SysWOW64\kohbbnvy\
2⤵
PID:688

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create kohbbnvy binPath= "C:\Windows\SysWOW64\kohbbnvy\tfesdnvp.exe /d\"C:\Users\Admin\AppData\Local\Temp\ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:4600

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description kohbbnvy "wifi internet conection"
2⤵
- Launches sc.exe
PID:4352

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start kohbbnvy
2⤵
- Launches sc.exe
PID:2796

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:3352

C:\Windows\SysWOW64\kohbbnvy\tfesdnvp.exe
C:\Windows\SysWOW64\kohbbnvy\tfesdnvp.exe /d"C:\Users\Admin\AppData\Local\Temp\ffa470cbfce681b6f27abc2b87469f19_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4152

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:1148

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=4240 --field-trial-handle=2284,i,9807419199535700662,2319175108930815708,262144 --variations-seed-version /prefetch:8
1⤵
PID:1044

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

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

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tfesdnvp.exe

Filesize
12.0MB

MD5
d09dd2a460a0a951418b71264d6ac385

SHA1
30a3d978b191650adad2eef271974705784a7b1a

SHA256
b2895feec061f4808f700f3abecd4e9a622554d4290c4f8bf35a7a86d1502801

SHA512
e52bbaa4784efe3c877d511941454d258e01fdb2afb5b697cfacfc8f8f9869243ff920989fec98f6e369b83a29b8336373c63fd4c194475c3ea65046d22932b7

Download Submit
memory/1148-19-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/1148-22-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/1148-13-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/1148-17-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/1148-20-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/2104-1-0x00000000039A0000-0x0000000003AA0000-memory.dmp

Filesize
1024KB

Download
memory/2104-5-0x0000000000400000-0x00000000036CD000-memory.dmp

Filesize
50.8MB

Download
memory/2104-2-0x0000000003970000-0x0000000003983000-memory.dmp

Filesize
76KB

Download
memory/2104-8-0x0000000000400000-0x00000000036CD000-memory.dmp

Filesize
50.8MB

Download
memory/2104-10-0x0000000003970000-0x0000000003983000-memory.dmp

Filesize
76KB

Download
memory/2104-3-0x0000000000400000-0x00000000036CD000-memory.dmp

Filesize
50.8MB

Download
memory/4152-18-0x0000000003810000-0x0000000003910000-memory.dmp

Filesize
1024KB

Download
memory/4152-15-0x0000000000400000-0x00000000036CD000-memory.dmp

Filesize
50.8MB

Download
memory/4152-21-0x0000000000400000-0x00000000036CD000-memory.dmp

Filesize
50.8MB

Download
memory/4152-12-0x0000000000400000-0x00000000036CD000-memory.dmp

Filesize
50.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads