tofsee | fe075bbb51c5ab0cf88210f16d469c22642e916a3383020b81d449cffde92350

General

Target

9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe
Size

142KB
MD5

9a030a413b599096a4aa5ee0a16778c6
SHA1

9a1f9c4e0710d6a020b3fba15b5b7067881eec2b
SHA256

fe075bbb51c5ab0cf88210f16d469c22642e916a3383020b81d449cffde92350
SHA512

f699fd20a6b67902100f7b31620e6dd58b920e13aa097d912983b4608753c86348876781c325def85f535c13e961bebb0c13d2046cb2a9dc23ccb3ca403e5e22
SSDEEP

3072:K9Tpm/Wn628S6rzTkYfiL2+jKfgi4m5nuGFU6W6WNE6QUj:FeEzwFLnKP46uCm

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

1548 netsh.exe

pid	process
1548	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\kjzkvmzx\ImagePath = "C:\\Windows\\SysWOW64\\kjzkvmzx\\eekguuas.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:

9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

5036 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

eekguuas.exe

pid process

4428 eekguuas.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

eekguuas.exe

description pid process target process

PID 4428 set thread context of 5036 4428 eekguuas.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

4292 sc.exe
1820 sc.exe
1084 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
5036	svchost.exe

pid	process
4428	eekguuas.exe

description	pid	process	target process
PID 4428 set thread context of 5036	4428	eekguuas.exe	svchost.exe

pid	process
4292	sc.exe
1820	sc.exe
1084	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exeeekguuas.exe

description	pid	process	target process
PID 3656 wrote to memory of 4652	3656	9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe	cmd.exe
PID 3656 wrote to memory of 4652	3656	9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe	cmd.exe
PID 3656 wrote to memory of 4652	3656	9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe	cmd.exe
PID 3656 wrote to memory of 1172	3656	9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe	cmd.exe
PID 3656 wrote to memory of 1172	3656	9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe	cmd.exe
PID 3656 wrote to memory of 1172	3656	9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe	cmd.exe
PID 3656 wrote to memory of 1820	3656	9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe	sc.exe
PID 3656 wrote to memory of 1820	3656	9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe	sc.exe
PID 3656 wrote to memory of 1820	3656	9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe	sc.exe
PID 3656 wrote to memory of 1084	3656	9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe	sc.exe
PID 3656 wrote to memory of 1084	3656	9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe	sc.exe
PID 3656 wrote to memory of 1084	3656	9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe	sc.exe
PID 3656 wrote to memory of 4292	3656	9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe	sc.exe
PID 3656 wrote to memory of 4292	3656	9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe	sc.exe
PID 3656 wrote to memory of 4292	3656	9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe	sc.exe
PID 3656 wrote to memory of 1548	3656	9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe	netsh.exe
PID 3656 wrote to memory of 1548	3656	9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe	netsh.exe
PID 3656 wrote to memory of 1548	3656	9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe	netsh.exe
PID 4428 wrote to memory of 5036	4428	eekguuas.exe	svchost.exe
PID 4428 wrote to memory of 5036	4428	eekguuas.exe	svchost.exe
PID 4428 wrote to memory of 5036	4428	eekguuas.exe	svchost.exe
PID 4428 wrote to memory of 5036	4428	eekguuas.exe	svchost.exe
PID 4428 wrote to memory of 5036	4428	eekguuas.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3656

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kjzkvmzx\
2⤵
PID:4652

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\eekguuas.exe" C:\Windows\SysWOW64\kjzkvmzx\
2⤵
PID:1172

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create kjzkvmzx binPath= "C:\Windows\SysWOW64\kjzkvmzx\eekguuas.exe /d\"C:\Users\Admin\AppData\Local\Temp\9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1820

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description kjzkvmzx "wifi internet conection"
2⤵
- Launches sc.exe
PID:1084

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start kjzkvmzx
2⤵
- Launches sc.exe
PID:4292

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:1548

C:\Windows\SysWOW64\kjzkvmzx\eekguuas.exe
C:\Windows\SysWOW64\kjzkvmzx\eekguuas.exe /d"C:\Users\Admin\AppData\Local\Temp\9a030a413b599096a4aa5ee0a16778c6_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4428

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:5036

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

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\eekguuas.exe

Filesize
11.8MB

MD5
c0a66c7d15706c881a99e57a45cbaa4e

SHA1
7a88b5185f379cd0807d4b4fb24f7acf5f2808f6

SHA256
72e8f73a6c5a315bd13db5f9ee94901a2c06988f416567ec4de64de1f11c8016

SHA512
36ae659c569bd8d446a6873b3d46e8e1313d7cfe2e07189ef54c4e7f632c51b5fb17b9d48dd3f843dad2ccac6f8a3d14c6c808e9584905d80ddc419a93ad3b43

Download Submit
memory/3656-0-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3656-1-0x0000000000470000-0x0000000000471000-memory.dmp

Filesize
4KB

Download
memory/3656-2-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/3656-6-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4428-7-0x0000000000690000-0x0000000000691000-memory.dmp

Filesize
4KB

Download
memory/4428-8-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4428-12-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/5036-9-0x0000000000A80000-0x0000000000A95000-memory.dmp

Filesize
84KB

Download
memory/5036-11-0x0000000000A80000-0x0000000000A95000-memory.dmp

Filesize
84KB

Download
memory/5036-13-0x0000000000A80000-0x0000000000A95000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads