tofsee | 46ae28c9e478a566cf6b803f2abc498eeaeb6b579e81067a8a26d8669e930dd0

General

Target

f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe
Size

10.4MB
MD5

f9c439a23d0f75c7943a026ea48d0847
SHA1

ce770c46965b40fb20baf9d505460cd32dd9a039
SHA256

46ae28c9e478a566cf6b803f2abc498eeaeb6b579e81067a8a26d8669e930dd0
SHA512

db1f56477c9a1a13922a8de7255003f8ef25be035cf24b28f98b1c4bf287d05f6b6ded2fb1f7167dd46c539deaa3d8ef3177a1d7d7da74cfce8fe931de137aa5
SSDEEP

196608:3vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvm:3vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvm

Score

10^/10

tofsee evasion persistence trojan upx

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

2340 netsh.exe

pid	process
2340	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\tvblyavm\ImagePath = "C:\\Windows\\SysWOW64\\tvblyavm\\xzuatgq.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:

f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1676 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

xzuatgq.exe

pid process

2632 xzuatgq.exe

pid	process
1676	svchost.exe

pid	process
2632	xzuatgq.exe

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\xzuatgq.exe	upx

Suspicious use of SetThreadContext 1 IoCs

Processes:

xzuatgq.exe

description pid process target process

PID 2632 set thread context of 1676 2632 xzuatgq.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

4300 sc.exe
3552 sc.exe
1504 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

632 1148 WerFault.exe f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe
1112 2632 WerFault.exe xzuatgq.exe

description	pid	process	target process
PID 2632 set thread context of 1676	2632	xzuatgq.exe	svchost.exe

pid	process
4300	sc.exe
3552	sc.exe
1504	sc.exe

pid	pid_target	process	target process
632	1148	WerFault.exe	f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe
1112	2632	WerFault.exe	xzuatgq.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exexzuatgq.exe

description	pid	process	target process
PID 1148 wrote to memory of 4148	1148	f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe	cmd.exe
PID 1148 wrote to memory of 4148	1148	f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe	cmd.exe
PID 1148 wrote to memory of 4148	1148	f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe	cmd.exe
PID 1148 wrote to memory of 5084	1148	f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe	cmd.exe
PID 1148 wrote to memory of 5084	1148	f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe	cmd.exe
PID 1148 wrote to memory of 5084	1148	f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe	cmd.exe
PID 1148 wrote to memory of 4300	1148	f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe	sc.exe
PID 1148 wrote to memory of 4300	1148	f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe	sc.exe
PID 1148 wrote to memory of 4300	1148	f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe	sc.exe
PID 1148 wrote to memory of 3552	1148	f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe	sc.exe
PID 1148 wrote to memory of 3552	1148	f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe	sc.exe
PID 1148 wrote to memory of 3552	1148	f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe	sc.exe
PID 1148 wrote to memory of 1504	1148	f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe	sc.exe
PID 1148 wrote to memory of 1504	1148	f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe	sc.exe
PID 1148 wrote to memory of 1504	1148	f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe	sc.exe
PID 2632 wrote to memory of 1676	2632	xzuatgq.exe	svchost.exe
PID 2632 wrote to memory of 1676	2632	xzuatgq.exe	svchost.exe
PID 2632 wrote to memory of 1676	2632	xzuatgq.exe	svchost.exe
PID 2632 wrote to memory of 1676	2632	xzuatgq.exe	svchost.exe
PID 2632 wrote to memory of 1676	2632	xzuatgq.exe	svchost.exe
PID 1148 wrote to memory of 2340	1148	f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe	netsh.exe
PID 1148 wrote to memory of 2340	1148	f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe	netsh.exe
PID 1148 wrote to memory of 2340	1148	f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1148

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tvblyavm\
2⤵
PID:4148

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xzuatgq.exe" C:\Windows\SysWOW64\tvblyavm\
2⤵
PID:5084

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create tvblyavm binPath= "C:\Windows\SysWOW64\tvblyavm\xzuatgq.exe /d\"C:\Users\Admin\AppData\Local\Temp\f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:4300

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description tvblyavm "wifi internet conection"
2⤵
- Launches sc.exe
PID:3552

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start tvblyavm
2⤵
- Launches sc.exe
PID:1504

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:2340

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1148 -s 1208
2⤵
- Program crash
PID:632

C:\Windows\SysWOW64\tvblyavm\xzuatgq.exe
C:\Windows\SysWOW64\tvblyavm\xzuatgq.exe /d"C:\Users\Admin\AppData\Local\Temp\f9c439a23d0f75c7943a026ea48d0847_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2632

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:1676

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2632 -s 516
2⤵
- Program crash
PID:1112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2632 -ip 2632
1⤵
PID:3208

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 1148 -ip 1148
1⤵
PID:3616

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\xzuatgq.exe
Filesize
14.7MB

MD5
e2797d26d25d4be82a1a78bbe9956606

SHA1
dbc5081331ef99c2e9f2265b4b2619d14dc8dd95

SHA256
5cc724caf4a5848a6d0d6e8f8ff8964d833d48e1dcba99257e28ce6c0bd023f9

SHA512
15aaa1dffa3d98e337e9bc68320c1c80457b7cb169da8331d20b64a6c95d13efc4832db9169404110548f97ecc9367a6d5f76f1b9cb755fb6cd1d0d3b8eae74d

Download Submit
memory/1148-1-0x00000000053C0000-0x00000000054C0000-memory.dmp

Filesize
1024KB

Download
memory/1148-2-0x00000000051E0000-0x00000000051F3000-memory.dmp

Filesize
76KB

Download
memory/1148-14-0x0000000000400000-0x0000000005166000-memory.dmp

Filesize
77.4MB

Download
memory/1676-9-0x0000000000300000-0x0000000000315000-memory.dmp

Filesize
84KB

Download
memory/1676-12-0x0000000000300000-0x0000000000315000-memory.dmp

Filesize
84KB

Download
memory/1676-15-0x0000000000300000-0x0000000000315000-memory.dmp

Filesize
84KB

Download
memory/1676-16-0x0000000000300000-0x0000000000315000-memory.dmp

Filesize
84KB

Download
memory/1676-17-0x0000000000300000-0x0000000000315000-memory.dmp

Filesize
84KB

Download
memory/2632-8-0x00000000052B0000-0x00000000052C3000-memory.dmp

Filesize
76KB

Download
memory/2632-7-0x0000000005470000-0x0000000005570000-memory.dmp

Filesize
1024KB

Download
memory/2632-13-0x0000000000400000-0x0000000005166000-memory.dmp

Filesize
77.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads