tofsee | 9890431d787f9448ed2abe4c371c580c7751577afc5994618bb3b7f852813077

General

Target

f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe
Size

10.3MB
MD5

f41d75b14ec54e06280c36e915290f41
SHA1

afc0c56f74ff4f4b85649463167f562532d3616d
SHA256

9890431d787f9448ed2abe4c371c580c7751577afc5994618bb3b7f852813077
SHA512

7b035781972deea2327d1b0fb841fcd9c02b2ddd14bcbde3c3efcea1a43776c31709111978d983efff36557a75c71d2b74b4ba1188c6ef4709fe3b478948bf0d
SSDEEP

24576:MjY+lg48SlJPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:3HSl

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

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

1748 netsh.exe

pid	process
1748	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\vzlvkfb\ImagePath = "C:\\Windows\\SysWOW64\\vzlvkfb\\rogxtkge.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:

f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4508 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

rogxtkge.exe

pid process

4328 rogxtkge.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

rogxtkge.exe

description pid process target process

PID 4328 set thread context of 4508 4328 rogxtkge.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

3132 sc.exe
1712 sc.exe
3412 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

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

4964 1964 WerFault.exe f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe
3744 4328 WerFault.exe rogxtkge.exe

pid	process
4508	svchost.exe

pid	process
4328	rogxtkge.exe

description	pid	process	target process
PID 4328 set thread context of 4508	4328	rogxtkge.exe	svchost.exe

pid	process
3132	sc.exe
1712	sc.exe
3412	sc.exe

pid	pid_target	process	target process
4964	1964	WerFault.exe	f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe
3744	4328	WerFault.exe	rogxtkge.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exerogxtkge.exe

description	pid	process	target process
PID 1964 wrote to memory of 1636	1964	f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe	cmd.exe
PID 1964 wrote to memory of 1636	1964	f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe	cmd.exe
PID 1964 wrote to memory of 1636	1964	f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe	cmd.exe
PID 1964 wrote to memory of 2532	1964	f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe	cmd.exe
PID 1964 wrote to memory of 2532	1964	f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe	cmd.exe
PID 1964 wrote to memory of 2532	1964	f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe	cmd.exe
PID 1964 wrote to memory of 3132	1964	f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe	sc.exe
PID 1964 wrote to memory of 3132	1964	f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe	sc.exe
PID 1964 wrote to memory of 3132	1964	f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe	sc.exe
PID 1964 wrote to memory of 1712	1964	f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe	sc.exe
PID 1964 wrote to memory of 1712	1964	f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe	sc.exe
PID 1964 wrote to memory of 1712	1964	f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe	sc.exe
PID 1964 wrote to memory of 3412	1964	f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe	sc.exe
PID 1964 wrote to memory of 3412	1964	f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe	sc.exe
PID 1964 wrote to memory of 3412	1964	f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe	sc.exe
PID 1964 wrote to memory of 1748	1964	f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe	netsh.exe
PID 1964 wrote to memory of 1748	1964	f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe	netsh.exe
PID 1964 wrote to memory of 1748	1964	f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe	netsh.exe
PID 4328 wrote to memory of 4508	4328	rogxtkge.exe	svchost.exe
PID 4328 wrote to memory of 4508	4328	rogxtkge.exe	svchost.exe
PID 4328 wrote to memory of 4508	4328	rogxtkge.exe	svchost.exe
PID 4328 wrote to memory of 4508	4328	rogxtkge.exe	svchost.exe
PID 4328 wrote to memory of 4508	4328	rogxtkge.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1964

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vzlvkfb\
2⤵
PID:1636

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rogxtkge.exe" C:\Windows\SysWOW64\vzlvkfb\
2⤵
PID:2532

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create vzlvkfb binPath= "C:\Windows\SysWOW64\vzlvkfb\rogxtkge.exe /d\"C:\Users\Admin\AppData\Local\Temp\f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:3132

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description vzlvkfb "wifi internet conection"
2⤵
- Launches sc.exe
PID:1712

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start vzlvkfb
2⤵
- Launches sc.exe
PID:3412

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:1748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1964 -s 1032
2⤵
- Program crash
PID:4964

C:\Windows\SysWOW64\vzlvkfb\rogxtkge.exe
C:\Windows\SysWOW64\vzlvkfb\rogxtkge.exe /d"C:\Users\Admin\AppData\Local\Temp\f41d75b14ec54e06280c36e915290f41_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4328

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:4508

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4328 -s 532
2⤵
- Program crash
PID:3744

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1964 -ip 1964
1⤵
PID:3156

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4328 -ip 4328
1⤵
PID:416

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=5240 --field-trial-handle=3240,i,13319578961094268484,16557498665191861597,262144 --variations-seed-version /prefetch:8
1⤵
PID:4072

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\rogxtkge.exe
Filesize
14.0MB

MD5
cfb0d255a3bbe2d3e4d71334c6dee529

SHA1
ad720cf607d0762b312ddd6cd649aa05338dad8b

SHA256
6c346ae145c2df93e16418b60fa07cfb3b3109f9453c93f6b595124d3c89eeab

SHA512
87709791a1c052c73a5c8c23ba1d9b4e8a28107db49eda0e9bb1cfbee02a1ca5cde74b17caca219dd97b2169cd9e56775fb568abbf592616646ff8aea1a0fcb0

Download Submit
memory/1964-8-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/1964-3-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/1964-2-0x0000000000A70000-0x0000000000A83000-memory.dmp

Filesize
76KB

Download
memory/1964-6-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/1964-9-0x0000000000A70000-0x0000000000A83000-memory.dmp

Filesize
76KB

Download
memory/1964-1-0x0000000000970000-0x0000000000A70000-memory.dmp

Filesize
1024KB

Download
memory/4328-11-0x0000000000B10000-0x0000000000C10000-memory.dmp

Filesize
1024KB

Download
memory/4328-12-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/4328-17-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/4508-13-0x0000000000B30000-0x0000000000B45000-memory.dmp

Filesize
84KB

Download
memory/4508-16-0x0000000000B30000-0x0000000000B45000-memory.dmp

Filesize
84KB

Download
memory/4508-18-0x0000000000B30000-0x0000000000B45000-memory.dmp

Filesize
84KB

Download
memory/4508-19-0x0000000000B30000-0x0000000000B45000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads